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Wang X, Li S, Wu D, Fan A, Yao X, Lyu M, Chen G, Yang Y. Soil microbes deal with the nitrogen deposition enhanced phosphorus limitation by shifting community structure in an old-growth subtropical forest. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 928:172530. [PMID: 38631644 DOI: 10.1016/j.scitotenv.2024.172530] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/31/2023] [Revised: 03/27/2024] [Accepted: 04/14/2024] [Indexed: 04/19/2024]
Abstract
Elevated atmospheric nitrogen (N) deposition potentially enhances the degree of phosphorus (P) limitation in tropical and subtropical forests. However, it remains elusive that how soil microorganisms deal with the N deposition-enhanced P limitation. We collected soils experienced 9 years of manipulative N input at various rates (0, 40, and 80 kg N ha-1 y-1) in an old-growth subtropical natural forest. We measured soil total and available carbon (C), N and P, microbial biomass C, N and P, enzyme activities involved in C, N and P acquisition, microbial community structure, as well as net N and P mineralization. Additionally, we calculated element use efficiency and evaluated microbial homeostasis index. Our findings revealed that N input increased microbial biomass C:P (MBC:P) and N:P (MBN:P) ratios. The homeostasis indexes of MBC:P and MBN:P were 0.68 and 0.75, respectively, indicating stoichiometric flexibility. Interestingly, MBC:P and MBN:P correlated significantly with the fungi:bacteria ratio (F:B), not with N and P use efficiencies, net N and P mineralization, and enzyme C:P (EEAC:P) and N:P (EEAN:P) ratios. Furthermore, EEAC:P and EEAN:P correlated positively with F:B but did not negatively correlate with the C:P and N:P ratios of available resources and microbial biomass. The effects of N deposition on MBC:P, MBN:P and EEAN:P became insignificant when including F:B as a covariate. These findings suggest that microbes flexibly adapted to the N deposition enhanced P limitation by changing microbial community structure, which not only alter microbial biomass C:N:P stoichiometry, but also the enzyme production strategy. In summary, our research advances our understanding of how soil microorganisms deal with the N deposition-enhanced soil P limitation in subtropical forests.
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Affiliation(s)
- Xiaohong Wang
- Key Laboratory of Humid Subtropical Eco-geographical Process of Ministry of Education, School of Geographical Sciences, Fujian Normal University, Fuzhou 350117, China; Fujian Sanming Forest Ecosystem National Observation and Research Station, Fujian Normal University, Fuzhou 350117, China; State Key Laboratory of Humid Subtropical Mountain Ecology, Ministry of Science and Technology and Fujian Province Funded, Fuzhou 350117, China
| | - Shiyining Li
- Key Laboratory of Humid Subtropical Eco-geographical Process of Ministry of Education, School of Geographical Sciences, Fujian Normal University, Fuzhou 350117, China; Fujian Sanming Forest Ecosystem National Observation and Research Station, Fujian Normal University, Fuzhou 350117, China; State Key Laboratory of Humid Subtropical Mountain Ecology, Ministry of Science and Technology and Fujian Province Funded, Fuzhou 350117, China
| | - Dongmei Wu
- Key Laboratory of Humid Subtropical Eco-geographical Process of Ministry of Education, School of Geographical Sciences, Fujian Normal University, Fuzhou 350117, China; Fujian Sanming Forest Ecosystem National Observation and Research Station, Fujian Normal University, Fuzhou 350117, China; State Key Laboratory of Humid Subtropical Mountain Ecology, Ministry of Science and Technology and Fujian Province Funded, Fuzhou 350117, China
| | - Ailian Fan
- Key Laboratory of Humid Subtropical Eco-geographical Process of Ministry of Education, School of Geographical Sciences, Fujian Normal University, Fuzhou 350117, China; Fujian Sanming Forest Ecosystem National Observation and Research Station, Fujian Normal University, Fuzhou 350117, China; State Key Laboratory of Humid Subtropical Mountain Ecology, Ministry of Science and Technology and Fujian Province Funded, Fuzhou 350117, China
| | - Xiaodong Yao
- Key Laboratory of Humid Subtropical Eco-geographical Process of Ministry of Education, School of Geographical Sciences, Fujian Normal University, Fuzhou 350117, China; Fujian Sanming Forest Ecosystem National Observation and Research Station, Fujian Normal University, Fuzhou 350117, China; State Key Laboratory of Humid Subtropical Mountain Ecology, Ministry of Science and Technology and Fujian Province Funded, Fuzhou 350117, China
| | - Maokui Lyu
- Key Laboratory of Humid Subtropical Eco-geographical Process of Ministry of Education, School of Geographical Sciences, Fujian Normal University, Fuzhou 350117, China; Fujian Sanming Forest Ecosystem National Observation and Research Station, Fujian Normal University, Fuzhou 350117, China; State Key Laboratory of Humid Subtropical Mountain Ecology, Ministry of Science and Technology and Fujian Province Funded, Fuzhou 350117, China
| | - Guangshui Chen
- Key Laboratory of Humid Subtropical Eco-geographical Process of Ministry of Education, School of Geographical Sciences, Fujian Normal University, Fuzhou 350117, China; Fujian Sanming Forest Ecosystem National Observation and Research Station, Fujian Normal University, Fuzhou 350117, China; State Key Laboratory of Humid Subtropical Mountain Ecology, Ministry of Science and Technology and Fujian Province Funded, Fuzhou 350117, China.
| | - Yusheng Yang
- Key Laboratory of Humid Subtropical Eco-geographical Process of Ministry of Education, School of Geographical Sciences, Fujian Normal University, Fuzhou 350117, China; Fujian Sanming Forest Ecosystem National Observation and Research Station, Fujian Normal University, Fuzhou 350117, China; State Key Laboratory of Humid Subtropical Mountain Ecology, Ministry of Science and Technology and Fujian Province Funded, Fuzhou 350117, China
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Jin L, Wu Q, Xie S, Chen W, Duan C, Sun C, Pan Y, Lauridsen TL. Phosphorus stoichiometric homeostasis of submerged macrophytes and associations with interspecific interactions and community stability in Erhai Lake, China. WATER RESEARCH 2024; 256:121575. [PMID: 38636121 DOI: 10.1016/j.watres.2024.121575] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/02/2023] [Revised: 04/02/2024] [Accepted: 04/04/2024] [Indexed: 04/20/2024]
Abstract
According to stoichiometric homeostasis theory, eutrophication is expected to increase the dominance of submerged macrophytes with low homeostatic regulation coefficients (H) relative to those with high H values, ultimately reducing macrophyte community stability. However, empirical evidence supporting this hypothesis is limited. In this study, we conducted a three-year tracking survey (seven sampling events) at 81 locations across three regions of Erhai Lake. We assessed the H values of submerged macrophyte species, revealing significant H values for phosphorus (P) and strong associations of HP values (range: 1.58-2.94) with species and community stability. Moreover, in plots simultaneously containing the dominant high-HP species, Potamogeton maackianus, and its low-HP counterpart, Ceratophyllum demersum, we explored the relationships among eutrophication, interspecific interaction shifts, and community dynamics. As the environmental P concentration increased, the dominance of P. maackianus decreased, while that of C. demersum increased. This shift coincided with reductions in community HP and stability. Our study underpins the effectiveness of H values for forecasting interspecific interactions among submerged macrophytes, thereby clarifying how eutrophication contributes to the decline in stability of the submerged macrophyte community.
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Affiliation(s)
- Ling Jin
- School of Ecology and Environmental Sciences, Yunnan University & Yunnan Key Laboratory for Plateau Mountain Ecology and Restoration of Degraded Environments, Yunnan University, Kunming, Yunnan, 650091, China; International Cooperative Center of Plateau Lake Ecological Restoration and Watershed Management of Yunnan, Kunming, Yunnan, 650091, China
| | - Qihang Wu
- School of Ecology and Environmental Sciences, Yunnan University & Yunnan Key Laboratory for Plateau Mountain Ecology and Restoration of Degraded Environments, Yunnan University, Kunming, Yunnan, 650091, China; International Cooperative Center of Plateau Lake Ecological Restoration and Watershed Management of Yunnan, Kunming, Yunnan, 650091, China
| | - Shijie Xie
- Institute of International Rivers and Eco-security, Yunnan Key Laboratory of International Rivers and Trans-Boundary Eco-security, Yunnan University, Kunming, 650091, China
| | - Wenwen Chen
- School of Resources and Environmental Engineering, Anhui University, Hefei, 230601, China
| | - Changqun Duan
- School of Ecology and Environmental Sciences, Yunnan University & Yunnan Key Laboratory for Plateau Mountain Ecology and Restoration of Degraded Environments, Yunnan University, Kunming, Yunnan, 650091, China; International Cooperative Center of Plateau Lake Ecological Restoration and Watershed Management of Yunnan, Kunming, Yunnan, 650091, China
| | - Changqing Sun
- Guizhou Agricultural Science and Technology Information Institute, Guiyang, 550006, China
| | - Ying Pan
- School of Ecology and Environmental Sciences, Yunnan University & Yunnan Key Laboratory for Plateau Mountain Ecology and Restoration of Degraded Environments, Yunnan University, Kunming, Yunnan, 650091, China; International Cooperative Center of Plateau Lake Ecological Restoration and Watershed Management of Yunnan, Kunming, Yunnan, 650091, China.
| | - Torben L Lauridsen
- Department of Ecoscience and WATEC, Aarhus University, C.F. Møllers Allé 4-6, 8000 Aarhus C, Denmark
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Wu J, Jiao L, Che X, Zhu X, Yuan X. Nutrient allocation patterns of Picea crassifolia on the eastern margin of the Qinghai-Tibet Plateau. INTERNATIONAL JOURNAL OF BIOMETEOROLOGY 2024; 68:1155-1167. [PMID: 38499792 DOI: 10.1007/s00484-024-02655-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/12/2023] [Revised: 03/02/2024] [Accepted: 03/11/2024] [Indexed: 03/20/2024]
Abstract
It can provide a basis for decision making for the conservation and sustainable use of forest ecosystems in mountains to understand the stoichiometric properties and nutrient allocation strategies of major tree species. However, the plant nutrient allocation strategies under different environmental gradients in forest systems of arid and semi-arid mountains are not fully understand. Therefore, three typical regions in the Qilian Mountains on the eastern edge of the Qinghai-Tibet Plateau were selected based on precipitation and temperature gradients, and the stoichiometric characteristics and nutrient allocation strategies of Qinghai spruce (Picea crassifolia) of the dominant tree species under different environmental gradients were investigated. The results showed that (1) the stoichiometric characteristics of plant tissues were different in the three regions. (2) The importance of each tissue in the plant nutrient allocation varied in different regions, showing that the plant roots are more important in the warm-wet region, while the plant leaves, branches and trunks are more important in the transition and hot-dry regions. (3) The influencing factors affecting plant nutrient allocation strategies were inconsistent across regions, which showed that plant nutrient allocation strategies in the warm-wet and transition region were mainly influenced by soil factors, while they were more influenced by climatic factors in the hot-dry region. The patterns of plant nutrient allocation strategies and drivers under different environmental gradients could help us better understand the ecological adaptation mechanism and physiological adjustment mechanism of forest ecosystem in mountains.
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Affiliation(s)
- Jingjing Wu
- College of Geography and Environmental Science, Northwest Normal University, No. 967, Anning East Road, Lanzhou, 730070, China
- Key Laboratory of Resource Environment and Sustainable Development of Oasis, Gansu Province, Northwest Normal University, Lanzhou, 730070, China
| | - Liang Jiao
- College of Geography and Environmental Science, Northwest Normal University, No. 967, Anning East Road, Lanzhou, 730070, China.
- Key Laboratory of Resource Environment and Sustainable Development of Oasis, Gansu Province, Northwest Normal University, Lanzhou, 730070, China.
| | - Xichen Che
- College of Geography and Environmental Science, Northwest Normal University, No. 967, Anning East Road, Lanzhou, 730070, China
- Key Laboratory of Resource Environment and Sustainable Development of Oasis, Gansu Province, Northwest Normal University, Lanzhou, 730070, China
| | - Xuli Zhu
- College of Geography and Environmental Science, Northwest Normal University, No. 967, Anning East Road, Lanzhou, 730070, China
- Key Laboratory of Resource Environment and Sustainable Development of Oasis, Gansu Province, Northwest Normal University, Lanzhou, 730070, China
| | - Xin Yuan
- College of Geography and Environmental Science, Northwest Normal University, No. 967, Anning East Road, Lanzhou, 730070, China
- Key Laboratory of Resource Environment and Sustainable Development of Oasis, Gansu Province, Northwest Normal University, Lanzhou, 730070, China
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Zhu Y, Mulholland MR, Bernhardt PW, Neeley AR, Widner B, Tapia AM, Echevarria MA. Nitrogen uptake rates and phytoplankton composition across contrasting North Atlantic Ocean coastal regimes north and south of Cape Hatteras. Front Microbiol 2024; 15:1380179. [PMID: 38784802 PMCID: PMC11113559 DOI: 10.3389/fmicb.2024.1380179] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2024] [Accepted: 04/17/2024] [Indexed: 05/25/2024] Open
Abstract
Understanding nitrogen (N) uptake rates respect to nutrient availability and the biogeography of phytoplankton communities is crucial for untangling the complexities of marine ecosystems and the physical, biological, and chemical forces shaping them. In the summer of 2016, we conducted measurements of bulk microbial uptake rates for six 15N-labeled substrates: nitrate, nitrite, ammonium, urea, cyanate, and dissolve free amino acids across distinct marine provinces, including the continental shelf of the Mid-and South Atlantic Bights (MAB and SAB), the Slope Sea, and the Gulf Stream, marking the first instance of simultaneously measuring six different N uptake rates in this dynamic region. Total measured N uptake rates were lowest in the Gulf Stream followed by the SAB. Notably, the MAB exhibited significantly higher N uptake rates compared to the SAB, likely due to the excess levels of pre-existing phosphorus present in the MAB. Together, urea and nitrate uptake contributed approximately 50% of the total N uptake across the study region. Although cyanate uptake rates were consistently low, they accounted for up to 11% of the total measured N uptake at some Gulf Stream stations. Phytoplankton groups were identified based on specific pigment markers, revealing a dominance of diatoms in the shelf community, while Synechococcus, Prochlorococcus, and pico-eukaryotes dominated in oligotrophic Gulf Stream waters. The reported uptake rates in this study were mostly in agreement with previous studies conducted in coastal waters of the North Atlantic Ocean. This study suggests there are distinct regional patterns of N uptake in this physically dynamic region, correlating with nutrient availability and phytoplankton community composition. These findings contribute valuable insights into the intricate interplay of biological and chemical factors shaping N dynamics in disparate marine ecosystems.
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Affiliation(s)
- Yifan Zhu
- Department of Ocean and Earth Sciences, Old Dominion University, Norfolk, VA, United States
- Department of Marine Sciences, University of Connecticut, Groton, CT, United States
| | - Margaret R. Mulholland
- Department of Ocean and Earth Sciences, Old Dominion University, Norfolk, VA, United States
| | - Peter W. Bernhardt
- Department of Ocean and Earth Sciences, Old Dominion University, Norfolk, VA, United States
| | | | - Brittany Widner
- Department of Ocean and Earth Sciences, Old Dominion University, Norfolk, VA, United States
| | - Alfonso Macías Tapia
- Department of Ocean and Earth Sciences, Old Dominion University, Norfolk, VA, United States
- Office of Education, National Oceanic and Atmospheric Administration, Silver Spring, MD, United States
| | - Michael A. Echevarria
- Department of Ocean and Earth Sciences, Old Dominion University, Norfolk, VA, United States
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Stanley A, Valentine S, Narr CF. Divvying up the pie: Tissue nutrient content is related to its parasite load. Ecol Evol 2024; 14:e11122. [PMID: 38774141 PMCID: PMC11106516 DOI: 10.1002/ece3.11122] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2023] [Revised: 02/19/2024] [Accepted: 02/23/2024] [Indexed: 05/24/2024] Open
Abstract
The nutrient content of host resources can influence the abundance of parasites within an ecosystem, but linking specific nutrients in a host to the abundance of different parasite taxa remains a challenge. Here, we work to forge this link by quantifying the relationship between the nutrient content of specific infection sites and the abundance of multiple parasite taxa within the digestive tract of largemouth bass (Micropterus salmoides) collected from the Mississippi River. To generate a mechanistic understanding of these relationships, we tested four basic predictions: (1) the nutrient content of different host tissues (infection sites) varies within and across hosts, (2) the nutrient content of parasite genera differs from that of their host tissue(s), (3) the nutrient content of parasite genera differ from one another and (4) the nutrient content of host tissues is related to the nutrient content and abundance of parasite genera. We found support for each of these predictions. We found stoichiometric differences between the digestive tissues we examined. We also found that across hosts, intestine and pyloric caeca C:N ratios increased and %N decreased with fish condition factor. Both of the actively feeding parasitic genera we measured had lower C:N ratios compared to both their host tissue and other encysted/non-reproductive genera, suggesting the potential for N limitation of these parasites in the intestines or pyloric caeca of hosts. Consistent with this possibility, we found that the total number of actively feeding parasitic worms in the pyloric caeca increased with that tissue's N:P ratio (but was not related to host condition factor). Our results suggest that parasites encounter significant variation in nutrient content within and across hosts and that this variation may influence the abundance of actively feeding parasites. This work highlights the need for additional empirical comparisons of parasite stoichiometry across tissues and individual hosts.
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Affiliation(s)
- Adrienne Stanley
- School of Biological SciencesSouthern Illinois UniversityCarbondaleILUSA
| | - Shaley Valentine
- Illinois River Biological StationIllinois Natural History SurveyHavanaILUSA
| | - Charlotte F. Narr
- School of Biological SciencesSouthern Illinois UniversityCarbondaleILUSA
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Zhou A, Ge B, Chen S, Kang D, Wu J, Zheng Y, Ma H. Leaf ecological stoichiometry and anatomical structural adaptation mechanisms of Quercus sect. Heterobalanus in southeastern Qinghai-Tibet Plateau. BMC PLANT BIOLOGY 2024; 24:325. [PMID: 38658813 PMCID: PMC11040857 DOI: 10.1186/s12870-024-05010-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/18/2023] [Accepted: 04/10/2024] [Indexed: 04/26/2024]
Abstract
BACKGROUND With the dramatic uplift of the Qinghai-Tibet Plateau (QTP) and the increase in altitude in the Pliocene, the environment became dry and cold, thermophilous plants that originally inhabited ancient subtropical forest essentially disappeared. However, Quercus sect. Heterobalanus (QSH) have gradually become dominant or constructive species distributed on harsh sites in the Hengduan Mountains range in southeastern QTP, Southwest China. Ecological stoichiometry reveals the survival strategies plants adopt to adapt to changing environment by quantifying the proportions and relationships of elements in plants. Simultaneously, as the most sensitive organs of plants to their environment, the structure of leaves reflects of the long-term adaptability of plants to their surrounding environments. Therefore, ecological adaptation mechanisms related to ecological stoichiometry and leaf anatomical structure of QSH were explored. In this study, stoichiometric characteristics were determined by measuring leaf carbon (C), nitrogen (N), and phosphorus (P) contents, and morphological adaptations were determined by examining leaf anatomical traits with microscopy. RESULTS Different QSH life forms and species had different nutrient allocation strategies. Leaves of QSH plants had higher C and P and lower N contents and higher N and lower P utilization efficiencies. According to an N: P ratio threshold, the growth of QSH species was limited by N, except that of Q. aquifolioides and Q. longispica, which was limited by both N and P. Although stoichiometric homeostasis of C, N, and P and C: N, C: P, and N: P ratios differed slightly across life forms and species, the overall degree of homeostasis was strong, with strictly homeostatic, homeostatic, and weakly homeostatic regulation. In addition, QSH leaves had compound epidermis, thick cuticle, developed palisade tissue and spongy tissue. However, leaves were relatively thin overall, possibly due to leaf leathering and lignification, which is strategy to resist stress from UV radiation, drought, and frost. Furthermore, contents of C, N, and P and stoichiometric ratios were significantly correlated with leaf anatomical traits. CONCLUSIONS QSH adapt to the plateau environment by adjusting the content and utilization efficiencies of C, N, and P elements. Strong stoichiometric homeostasis of QSH was likely a strategy to mitigate nutrient limitation. The unique leaf structure of the compound epidermis, thick cuticle, well-developed palisade tissue and spongy tissue is another adaptive mechanism for QSH to survive in the plateau environment. The anatomical adaptations and nutrient utilization strategies of QSH may have coevolved during long-term succession over millions of years.
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Affiliation(s)
- Aiting Zhou
- Key Laboratory of National Forestry and Grassland Administration on Biodiversity Conservation in Southwest China, Southwest Forestry University, Kunming, 650224, PR China
| | - Bairuixue Ge
- Key Laboratory of National Forestry and Grassland Administration on Biodiversity Conservation in Southwest China, Southwest Forestry University, Kunming, 650224, PR China
| | - Shi Chen
- Key Laboratory of National Forestry and Grassland Administration on Biodiversity Conservation in Southwest China, Southwest Forestry University, Kunming, 650224, PR China
| | - Dingxu Kang
- Key Laboratory of National Forestry and Grassland Administration on Biodiversity Conservation in Southwest China, Southwest Forestry University, Kunming, 650224, PR China
| | - Jianrong Wu
- Key Laboratory of National Forestry and Grassland Administration on Biodiversity Conservation in Southwest China, Southwest Forestry University, Kunming, 650224, PR China
- Key Laboratory of Forest Disaster Warning and Control in Universities of Yunnan Province, College of Forestry, Southwest Forestry University, Kunming, 650224, PR China
| | - Yanling Zheng
- Key Laboratory of National Forestry and Grassland Administration on Biodiversity Conservation in Southwest China, Southwest Forestry University, Kunming, 650224, PR China.
| | - Huancheng Ma
- Key Laboratory of National Forestry and Grassland Administration on Biodiversity Conservation in Southwest China, Southwest Forestry University, Kunming, 650224, PR China.
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Goldenberg SU, Spisla C, Sánchez N, Taucher J, Spilling K, Sswat M, Fiesinger A, Fernández-Méndez M, Krock B, Hauss H, Haussmann J, Riebesell U. Diatom-mediated food web functioning under ocean artificial upwelling. Sci Rep 2024; 14:3955. [PMID: 38368496 PMCID: PMC10874431 DOI: 10.1038/s41598-024-54345-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2023] [Accepted: 02/12/2024] [Indexed: 02/19/2024] Open
Abstract
Enhancing ocean productivity by artificial upwelling is evaluated as a nature-based solution for food security and climate change mitigation. Fish production is intended through diatom-based plankton food webs as these are assumed to be short and efficient. However, our findings from mesocosm experiments on artificial upwelling in the oligotrophic ocean disagree with this classical food web model. Here, diatoms did not reduce trophic length and instead impaired the transfer of primary production to crustacean grazers and small pelagic fish. The diatom-driven decrease in trophic efficiency was likely mediated by changes in nutritional value for the copepod grazers. Whilst diatoms benefitted the availability of essential fatty acids, they also caused unfavorable elemental compositions via high carbon-to-nitrogen ratios (i.e. low protein content) to which the grazers were unable to adapt. This nutritional imbalance for grazers was most pronounced in systems optimized for CO2 uptake through carbon-to-nitrogen ratios well beyond Redfield. A simultaneous enhancement of fisheries production and carbon sequestration via artificial upwelling may thus be difficult to achieve given their opposing stoichiometric constraints. Our study suggest that food quality can be more critical than quantity to maximize food web productivity during shorter-term fertilization of the oligotrophic ocean.
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Affiliation(s)
- Silvan Urs Goldenberg
- Biological Oceanography, GEOMAR Helmholtz Centre for Ocean Research Kiel, Kiel, Germany.
| | - Carsten Spisla
- Biological Oceanography, GEOMAR Helmholtz Centre for Ocean Research Kiel, Kiel, Germany
| | - Nicolás Sánchez
- Biological Oceanography, GEOMAR Helmholtz Centre for Ocean Research Kiel, Kiel, Germany
| | - Jan Taucher
- Biological Oceanography, GEOMAR Helmholtz Centre for Ocean Research Kiel, Kiel, Germany
| | - Kristian Spilling
- Marine and Freshwater Solutions, Finnish Environment Institute, Helsinki, Finland
- Centre for Coastal Research, University of Agder, Kristiansand, Norway
| | - Michael Sswat
- Biological Oceanography, GEOMAR Helmholtz Centre for Ocean Research Kiel, Kiel, Germany
| | - Anna Fiesinger
- Biological Oceanography, GEOMAR Helmholtz Centre for Ocean Research Kiel, Kiel, Germany
- Department of Biology, University of Konstanz, Konstanz, Germany
| | - Mar Fernández-Méndez
- Biological Oceanography, GEOMAR Helmholtz Centre for Ocean Research Kiel, Kiel, Germany
- Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research, Bremerhaven, Germany
| | - Bernd Krock
- Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research, Bremerhaven, Germany
| | - Helena Hauss
- Biological Oceanography, GEOMAR Helmholtz Centre for Ocean Research Kiel, Kiel, Germany
- NORCE Norwegian Research Centre, Mekjarvik, Norway
| | - Jacqueline Haussmann
- Biological Oceanography, GEOMAR Helmholtz Centre for Ocean Research Kiel, Kiel, Germany
| | - Ulf Riebesell
- Biological Oceanography, GEOMAR Helmholtz Centre for Ocean Research Kiel, Kiel, Germany
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Grunberg RL, Braat M, Bolnick DI. Elemental content of a host-parasite relationship in the threespine stickleback. Oecologia 2024; 204:427-437. [PMID: 37358647 DOI: 10.1007/s00442-023-05405-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2022] [Accepted: 06/12/2023] [Indexed: 06/27/2023]
Abstract
Parasite infections are ubiquitous and their effects on hosts could play a role in ecosystem processes. Ecological stoichiometry provides a framework to study linkages between consumers and their resource, such as parasites and their host, and ecosystem process; however, the stoichiometric traits of host-parasite associations are rarely quantified. Specifically, it is unclear whether parasites' elemental ratios closely resemble those of their host or if infection is related to host stoichiometry, especially in vertebrate hosts. To answer such questions, we measured the elemental content (%C, %N, and %P) and molar ratios (C:N, C:P, and N:P) of parasitized and unparasitized Gasterosteus aculeatus (three-spined stickleback) and their cestode parasite, Schistocephalus solidus. Host and parasite elemental content were distinct from each other, and parasites were generally higher in %C and lower in %N and %P. Parasite infections were related to host C:N, with infected hosts being lower in C:N. Parasite elemental content was independent of their host, but parasite body mass and parasite density were important drivers of parasite stoichiometry. Overall, these potential effects of parasite infections on host stoichiometry along with parasites' distinct elemental compositions suggest parasites may further contribute to differences in how individual hosts store and recycle nutrients.
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Affiliation(s)
- Rita L Grunberg
- Department of Biology, University of North Carolina, Chapel Hill, NC, USA.
| | - Megan Braat
- Department of Ecology and Evolutionary Biology, University of Connecticut, Storrs, CT, 06269, USA
| | - Daniel I Bolnick
- Department of Ecology and Evolutionary Biology, University of Connecticut, Storrs, CT, 06269, USA
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Pan S, Zhang W, Li Y, Gao Y, Yu F, Tang Z, Zhu Y. Unveiling novel perspectives on niche differentiation and plasticity in rhizosphere phosphorus forms of submerged macrophytes with different stoichiometric homeostasis. WATER RESEARCH 2023; 246:120679. [PMID: 37806123 DOI: 10.1016/j.watres.2023.120679] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/04/2023] [Revised: 09/08/2023] [Accepted: 09/28/2023] [Indexed: 10/10/2023]
Abstract
Stoichiometric homeostasis is the ability of organisms to maintain their element composition through various physiological mechanisms, regardless of changes in nutrient availability. Phosphorus (P) is a critical limiting element for eutrophication. Submerged macrophytes with different stoichiometric homeostasis regulated sediment P pollution by nutrient resorption, but whether and how P homeostasis and resorption in submerged macrophytes changed under variable plant community structure was unclear. Increasing evidence suggests that rhizosphere microbes drive niche overlap and differentiation for different P forms to constitute submerged macrophyte community structure. However, a greater understanding of how this occurs is required. This study examined the process underlying the metabolism of different rhizosphere P forms of submerged macrophytes under different cultivation patterns by analyzing physicochemical data, basic plant traits, microbial communities, and transcriptomics. The results indicate that alkaline phosphatase serves as a key factor in revealing the existence of a link between plant traits (path coefficient = 0.335, p < 0.05) and interactions with rhizosphere microbial communities (average path coefficient = 0.362, p < 0.05). Moreover, this study demonstrates that microbial communities further influence the niche plasticity of P by mediating plant root P metabolism genes (path coefficient = 0.354, p < 0.05) and rhizosphere microbial phosphorus storage (average path coefficient = 0.605, p < 0.01). This research not only contributes to a deeper comprehension of stoichiometric homeostasis and nutrient dynamics but also provides valuable insights into potential strategies for managing and restoring submerged macrophyte-dominated ecosystems in the face of changing nutrient conditions.
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Affiliation(s)
- Shenyang Pan
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, Ministry of Education, College of Environment, Hohai University, Nanjing 210098, PR China
| | - Wenlong Zhang
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, Ministry of Education, College of Environment, Hohai University, Nanjing 210098, PR China.
| | - Yi Li
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, Ministry of Education, College of Environment, Hohai University, Nanjing 210098, PR China.
| | - Yu Gao
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, Ministry of Education, College of Environment, Hohai University, Nanjing 210098, PR China
| | - Feng Yu
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, Ministry of Education, College of Environment, Hohai University, Nanjing 210098, PR China
| | - Zikang Tang
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, Ministry of Education, College of Environment, Hohai University, Nanjing 210098, PR China
| | - Yajie Zhu
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, Ministry of Education, College of Environment, Hohai University, Nanjing 210098, PR China
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Hu T, Xiong K, Yu Y, Wang J, Wu Y. Ecological stoichiometry and homeostasis characteristics of plant-litter-soil system with vegetation restoration of the karst desertification control. FRONTIERS IN PLANT SCIENCE 2023; 14:1224691. [PMID: 37868323 PMCID: PMC10587587 DOI: 10.3389/fpls.2023.1224691] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/21/2023] [Accepted: 09/22/2023] [Indexed: 10/24/2023]
Abstract
It is of great significance to clarify the ecologically chemical stoichiometric characteristics of plant-litter-soil in vegetation restoration process for elucidating the nutrient cycling law and soil nutrient management of karst ecosystem. The carbon (C), nitrogen (N) and phosphorus (P) contents of leaves, litter and soil and their stoichiometry were determined in loquat (Eribotrya japonica) plantations in a karst plateau canyon after 3, 6, 10 and 15 years of restoration. The homeostasis characteristics of leaf N, P, and N:P with the change in soil nutrients during restoration were revealed. The results showed that leaf C, N, and P contents initially increased and then decreased with increasing years of restoration at the same sampling time. The contents of nutrients in soil and litter varied with increasing restoration years, with the highest values mostly appearing in May and July. This could be due to greater moisture in May and July, which helps with nutrient absorption and transformation. The leaf N:P ratio of loquat with different restoration years was 35.76-47.39, with an average of 40.06. Therefore, loquat leaves may experience P limitation in the growth process. The relationships between N, P and N:P in leaves and soil indexes could be simulated by a homeostasis model. Except for the weak sensitivity of loquat leaf N in 10 years, the other indexes and treatments had a certain homeostasis. Plants maintain homeostasis by regulating physiological responses in vivo in response to soil nutrient changes, indicating that loquat has good adaptability in karst desertification environments, but attention should focus on the management of soil P in the field as part of the vegetation restoration process. Therefore, in future research, we should combine the soil water and fertilizer conditions of different growing seasons in karst rocky desertification areas and provide scientific field management to ensure that the results of rocky desertification management can play a role in rural revitalization.
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Affiliation(s)
- Tinghui Hu
- School of Karst Science, Guizhou Engineering Laboratory for Karst Desertification Control and Eco-industry, Guizhou Normal University, Guiyang, Guizhou, China
- Guizhou Oil Research Institute, Guizhou Academy of Agricultural Sciences, Guiyang, Guizhou, China
| | - Kangning Xiong
- School of Karst Science, Guizhou Engineering Laboratory for Karst Desertification Control and Eco-industry, Guizhou Normal University, Guiyang, Guizhou, China
| | - Yanghua Yu
- School of Karst Science, Guizhou Engineering Laboratory for Karst Desertification Control and Eco-industry, Guizhou Normal University, Guiyang, Guizhou, China
| | - Jun Wang
- Guizhou Oil Research Institute, Guizhou Academy of Agricultural Sciences, Guiyang, Guizhou, China
| | - Yawei Wu
- Institute of Pomology Science, Guizhou Academy of Agricultural Sciences, Guiyang, Guizhou, China
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11
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Vogels JJ, Van de Waal DB, WallisDeVries MF, Van den Burg AB, Nijssen M, Bobbink R, Berg MP, Olde Venterink H, Siepel H. Towards a mechanistic understanding of the impacts of nitrogen deposition on producer-consumer interactions. Biol Rev Camb Philos Soc 2023; 98:1712-1731. [PMID: 37265074 DOI: 10.1111/brv.12972] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2022] [Revised: 04/25/2023] [Accepted: 04/26/2023] [Indexed: 06/03/2023]
Abstract
Nitrogen (N) deposition has increased substantially since the second half of the 20th century due to human activities. This increase of reactive N into the biosphere has major implications for ecosystem functioning, including primary production, soil and water chemistry and producer community structure and diversity. Increased N deposition is also linked to the decline of insects observed over recent decades. However, we currently lack a mechanistic understanding of the effects of high N deposition on individual fitness, species richness and community structure of both invertebrate and vertebrate consumers. Here, we review the effects of N deposition on producer-consumer interactions, focusing on five existing ecological frameworks: C:N:P ecological stoichiometry, trace element ecological stoichiometry, nutritional geometry, essential micronutrients and allelochemicals. We link reported N deposition-mediated changes in producer quality to life-history strategies and traits of consumers, to gain a mechanistic understanding of the direction of response in consumers. We conclude that high N deposition influences producer quality via eutrophication and acidification pathways. This makes oligotrophic poorly buffered ecosystems most vulnerable to significant changes in producer quality. Changes in producer quality between the reviewed frameworks are often interlinked, complicating predictions of the effects of high N deposition on producer quality. The degree and direction of fitness responses of consumers to changes in producer quality varies among species but can be explained by differences in life-history traits and strategies, particularly those affecting species nutrient intake regulation, mobility, relative growth rate, host-plant specialisation, ontogeny and physiology. To increase our understanding of the effects of N deposition on these complex mechanisms, the inclusion of life-history traits of consumer species in future study designs is pivotal. Based on the reviewed literature, we formulate five hypotheses on the mechanisms underlying the effects of high N deposition on consumers, by linking effects of nutritional ecological frameworks to life-history strategies. Importantly, we expect that N-deposition-mediated changes in producer quality will result in a net decrease in consumer community as well as functional diversity. Moreover, we anticipate an increased risk of outbreak events of a small subset of generalist species, with concomitant declines in a multitude of specialist species. Overall, linking ecological frameworks with consumer life-history strategies provides a mechanistic understanding of the impacts of high N deposition on producer-consumer interactions, which can inform management towards more effective mitigation strategies.
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Affiliation(s)
- Joost J Vogels
- Bargerveen Foundation, Toernooiveld 1, 6525 ED, Nijmegen, The Netherlands
- Department of Animal Ecology and Physiology, Radboud University Nijmegen, Heyendaalseweg 135, 6525 AJ, Nijmegen, The Netherlands
| | - Dedmer B Van de Waal
- Department of Aquatic Ecology, Netherlands Institute of Ecology (NIOO-KNAW), Droevendaalsesteeg 10, 6708 PB, Wageningen, The Netherlands
- Department of Freshwater and Marine Ecology, Institute for Biodiversity and Ecosystem Dynamics, University of Amsterdam, Sciencepark 904, 1098 XH, Amsterdam, The Netherlands
| | - Michiel F WallisDeVries
- De Vlinderstichting / Dutch Butterfly Conservation, P.O. Box 6700 AM, Wageningen, The Netherlands
| | | | - Marijn Nijssen
- Bargerveen Foundation, Toernooiveld 1, 6525 ED, Nijmegen, The Netherlands
- Department of Animal Ecology and Physiology, Radboud University Nijmegen, Heyendaalseweg 135, 6525 AJ, Nijmegen, The Netherlands
| | - Roland Bobbink
- B-WARE Research Centre, Radboud University Nijmegen, Toernooiveld 1, 6525 ED, Nijmegen, The Netherlands
| | - Matty P Berg
- A-LIFE, Section Ecology & Evolution, Vrije Universiteit, De Boelelaan 1085, 1081 HV, Amsterdam, The Netherlands
- GELIFES, Community and Conservation Ecology Group, University of Groningen, Nijenborgh 7, 9747 AG, Groningen, The Netherlands
| | - Harry Olde Venterink
- Department of Biology, Vrije Universiteit Brussel, Pleinlaan 2, 1050, Brussels, Belgium
| | - Henk Siepel
- Department of Animal Ecology and Physiology, Radboud University Nijmegen, Heyendaalseweg 135, 6525 AJ, Nijmegen, The Netherlands
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12
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Pichon B, Thébault E, Lacroix G, Gounand I. Quality matters: Stoichiometry of resources modulates spatial feedbacks in aquatic-terrestrial meta-ecosystems. Ecol Lett 2023; 26:1700-1713. [PMID: 37458203 DOI: 10.1111/ele.14284] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2023] [Revised: 06/16/2023] [Accepted: 06/16/2023] [Indexed: 07/21/2023]
Abstract
Species dispersal and resource spatial flows greatly affect the dynamics of connected ecosystems. So far, research on meta-ecosystems has mainly focused on the quantitative effect of subsidy flows. Yet, resource exchanges at heterotrophic-autotrophic (e.g. aquatic-terrestrial) ecotones display a stoichiometric asymmetry that likely matters for functioning. Here, we joined ecological stoichiometry and the meta-ecosystem framework to understand how subsidy stoichiometry mediates the response of the meta-ecosystem to subsidy flows. Our model results demonstrate that resource flows between ecosystems can induce a positive spatial feedback loop, leading to higher production at the meta-ecosystem scale by relaxing local ecosystem limitations ('spatial complementarity'). Furthermore, we show that spatial flows can also have an unexpected negative impact on production when accentuating the stoichiometric mismatch between local resources and basal species needs. This study paves the way for studies on the interdependency of ecosystems at the landscape extent.
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Affiliation(s)
- Benoît Pichon
- Institut d'écologie et des sciences de l'environnement (iEES Paris), Sorbonne Université, CNRS, UPEC, CNRS, IRD, INRA, Paris, France
- ISEM, Univ Montpellier, CNRS, EPHE, IRD, Montpellier, France
| | - Elisa Thébault
- Institut d'écologie et des sciences de l'environnement (iEES Paris), Sorbonne Université, CNRS, UPEC, CNRS, IRD, INRA, Paris, France
| | - Gérard Lacroix
- Institut d'écologie et des sciences de l'environnement (iEES Paris), Sorbonne Université, CNRS, UPEC, CNRS, IRD, INRA, Paris, France
- CNRS, UAR 3194 (ENS, CNRS), CEREEP-Ecotron IleDeFrance, Ecole Normale Supérieure, Paris, France
| | - Isabelle Gounand
- Institut d'écologie et des sciences de l'environnement (iEES Paris), Sorbonne Université, CNRS, UPEC, CNRS, IRD, INRA, Paris, France
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13
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Feng J, Chen L, Xia T, Ruan Y, Sun X, Wu T, Zhong Y, Shao X, Tang Z. Microbial fertilizer regulates C:N:P stoichiometry and alleviates phosphorus limitation in flue-cured tobacco planting soil. Sci Rep 2023; 13:10276. [PMID: 37355746 PMCID: PMC10290673 DOI: 10.1038/s41598-023-37438-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2022] [Accepted: 06/21/2023] [Indexed: 06/26/2023] Open
Abstract
Fertilization can be optimized and managed during the flue-cured tobacco growing period by studying the response of soil and microbial biomass stoichiometric characteristics to fertilization. In this study, we investigated the effect of compound fertilizers combined with microbial fertilizer treatments on the stoichiometric characteristics of the rhizosphere soil and the limitations of microbial resources during the flue-cured tobacco growing period. The results indicated that soil and microbial C:N:P varied greatly with the growing period. The effect of sampling time was usually greater than that of fertilization treatment, and microbial C:N:P did not vary with the soil resource stoichiometric ratio. The microbial metabolism of the tobacco-growing soil was limited by phosphorus after extending the growing period, and phosphorus limitation gradually increased from the root extension to the maturation periods but decreased at harvest. The rhizosphere soil microbial nitrogen and phosphorus limitations were mainly affected by soil water content, soil pH, microbial biomass carbon, and the ratio of microbial biomass carbon to microbial biomass phosphorus. Applying microbial fertilizer reduced phosphorus limitation. Therefore, applying microbial fertilizer regulated the limitation of microbial resources by affecting the soil and microbial biomass C:N:P in flue-cured tobacco rhizosphere soils.
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Affiliation(s)
- Junna Feng
- College of Agricultural and Life Sciences, Kunming University, Kunming, 650214, Yunnan, China
| | - Lulu Chen
- Key Laboratory of Ecosystem Network Observation and Modeling, Center for Forest Ecosystem Studies and Qianyanzhou Ecological Station, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, 100101, China
| | - Tiyuan Xia
- College of Agricultural and Life Sciences, Kunming University, Kunming, 650214, Yunnan, China
| | - Yanan Ruan
- College of Plant Protection, Yunnan Agricultural University, Kunming, 650201, Yunnan, China
| | - Xiaolu Sun
- Agronomy College, Qingdao Agricultural University, Qingdao, 266000, Shandong, China
| | - Tian Wu
- College of Agricultural and Life Sciences, Kunming University, Kunming, 650214, Yunnan, China
| | - Yu Zhong
- College of Agricultural and Life Sciences, Kunming University, Kunming, 650214, Yunnan, China
| | - Xiaodong Shao
- Honghe Branch of Yunnan Tobacco Company, Mile, 652300, Yunnan, China
| | - Zuoxin Tang
- College of Agricultural and Life Sciences, Kunming University, Kunming, 650214, Yunnan, China.
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14
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Kolbenschlag S, Bollinger E, Gerstle V, Brühl CA, Entling MH, Schulz R, Bundschuh M. Impact across ecosystem boundaries - Does Bti application change quality and composition of the diet of riparian spiders? THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 873:162351. [PMID: 36822417 DOI: 10.1016/j.scitotenv.2023.162351] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/30/2022] [Revised: 02/16/2023] [Accepted: 02/16/2023] [Indexed: 06/18/2023]
Abstract
Emerging aquatic insects link aquatic and adjacent terrestrial food webs by subsidizing terrestrial predators with high-quality prey. One of the main constituents of aquatic subsidy, the non-biting midges (Chironomidae), showed altered emergence dynamics in response to the mosquito control agent Bacillus thuringiensis var. israelensis (Bti). As riparian spiders depend on aquatic subsidy, they may be affected by such changes in prey availability. Thus, we conducted a field study in twelve floodplain pond mesocosms (FPMs), six were treated with Bti (2.88 × 109 ITU/ha, VectoBac WDG) three times, to investigate if the Bti-induced shift in chironomid emergence dynamics is reflected in their nutritional value and in the diet of riparian spiders. We measured the content of proteins, lipids, glycogen, and carbohydrates in emerged Chironomidae, and determined the stable isotope ratios of female Tetragnatha extensa, a web-building spider living in the riparian vegetation of the FPMs. We analysed the proportion of aquatic prey in spiders' diet, niche size, and trophic position. While the content of nutrients and thus the prey quality was not significantly altered by Bti, effects on the spiders' diet were observed. The trophic position of T. extensa from Bti-treated FPMs was lower compared to the control while the aquatic proportion was only minimally reduced. We assume that spiders fed more on terrestrial prey but also on other aquatic organisms such as Baetidae, whose emergence was unaffected by Bti. In contrast to the partly predaceous Chironomidae, consumption of aquatic and terrestrial primary consumers potentially explains the observed lower trophic position of spiders from Bti-treated FPMs. As prey organisms vary in their quality the suggested dietary shift could transfer previously observed effects of Bti to riparian spiders conceivably affecting their populations. Our results further support that anthropogenic stressors in aquatic ecosystems may translate to terrestrial predators through aquatic subsidy.
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Affiliation(s)
- Sara Kolbenschlag
- iES Landau, Institute for Environmental Sciences, RPTU Kaiserslautern-Landau, Fortstr. 7, D-76829 Landau, Germany
| | - Eric Bollinger
- iES Landau, Institute for Environmental Sciences, RPTU Kaiserslautern-Landau, Fortstr. 7, D-76829 Landau, Germany
| | - Verena Gerstle
- iES Landau, Institute for Environmental Sciences, RPTU Kaiserslautern-Landau, Fortstr. 7, D-76829 Landau, Germany
| | - Carsten A Brühl
- iES Landau, Institute for Environmental Sciences, RPTU Kaiserslautern-Landau, Fortstr. 7, D-76829 Landau, Germany
| | - Martin H Entling
- iES Landau, Institute for Environmental Sciences, RPTU Kaiserslautern-Landau, Fortstr. 7, D-76829 Landau, Germany
| | - Ralf Schulz
- iES Landau, Institute for Environmental Sciences, RPTU Kaiserslautern-Landau, Fortstr. 7, D-76829 Landau, Germany; Eußerthal Ecosystem Research Station, RPTU Kaiserslautern-Landau, Birkenthalstr. 13, D-76857 Eußerthal, Germany
| | - Mirco Bundschuh
- iES Landau, Institute for Environmental Sciences, RPTU Kaiserslautern-Landau, Fortstr. 7, D-76829 Landau, Germany; Department of Aquatic Sciences and Assessment, Swedish University of Agricultural Sciences, Lennart Hjelms väg 9, SWE-75007 Uppsala, Sweden.
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15
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Chen Z, Zhou J, Lai S, Jian C, Chen Y, Luo Y, Xu B. Species differences in stoichiometric homeostasis affect grassland community stability under N and P addition. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:61913-61926. [PMID: 36933129 DOI: 10.1007/s11356-023-26479-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/23/2022] [Accepted: 03/12/2023] [Indexed: 05/10/2023]
Abstract
Unbalanced N and P input has substantially altered the relative importance of N and P limitation in grassland ecosystems, which resulted in profound impacts on species nutrient cycling, community structure, and ecosystem stability. However, the underlying species-specific nutrient use strategy and stoichiometric homeostasis in driving community structure and stability changes remain unclear. A split-plot N and P addition experiment (main-plot: 0, 25, 50, and 100 kgN hm-2 a-1; subplot: 0, 20, 40, and 80 kgP2O5 hm-2 a-1) was conducted during 2017-2019 in two typical grasslands (perennial grass and perennial forb) communities in the Loess Plateau. The stoichiometric homeostasis of 10 main component species, species dominance, stability changes, and their contribution to community stability were investigated. Perennial legume and perennial clonal species tend to perform higher stoichiometric homeostasis than non-clonal and annual forb. Large shifts in species with high homeostasis vs. low homeostasis caused by N and P addition showed consistently profound impacts on community homeostasis and stability in both communities. In both two communities, species dominance performed significantly positive relationships with homeostasis under no N and P addition. P alone or combined with 25 kgN hm-2 a-1 addition strengthened species dominance-homeostasis relationship and increased community homeostasis due to increased perennial legumes. Under 50 and 100 kgN hm-2 a-1 combined with P addition, species dominance-homeostasis relationships were weakened, and community homeostasis decreased significantly in both communities, which was due to that increased annual and non-clonal forb suppressed perennial legume and clonal species. Our results demonstrated that trait-based classifications of species-level homeostasis offer a reliable tool in predicting species performance and community stability under N and P addition, and conserving species with high homeostasis is important to enhance semiarid grassland ecosystem function stability on the Loess Plateau.
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Affiliation(s)
- Zhifei Chen
- State Key Laboratory of Soil Erosion and Dryland Farming On the Loess Plateau, Northwest A&F University, Xinong Rd. 26#, Yangling, 712100, Shaanxi, People's Republic of China
- College of Life Sciences, Guizhou University, Guiyang, 550025, Guizhou, People's Republic of China
| | - Junjie Zhou
- State Key Laboratory of Soil Erosion and Dryland Farming On the Loess Plateau, Northwest A&F University, Xinong Rd. 26#, Yangling, 712100, Shaanxi, People's Republic of China
| | - Shuaibin Lai
- State Key Laboratory of Soil Erosion and Dryland Farming On the Loess Plateau, Northwest A&F University, Xinong Rd. 26#, Yangling, 712100, Shaanxi, People's Republic of China
| | - Chunxia Jian
- State Key Laboratory of Soil Erosion and Dryland Farming On the Loess Plateau, Northwest A&F University, Xinong Rd. 26#, Yangling, 712100, Shaanxi, People's Republic of China
| | - Yang Chen
- State Key Laboratory of Soil Erosion and Dryland Farming On the Loess Plateau, Northwest A&F University, Xinong Rd. 26#, Yangling, 712100, Shaanxi, People's Republic of China
| | - Yang Luo
- State Key Laboratory of Soil Erosion and Dryland Farming On the Loess Plateau, Northwest A&F University, Xinong Rd. 26#, Yangling, 712100, Shaanxi, People's Republic of China
| | - Bingcheng Xu
- State Key Laboratory of Soil Erosion and Dryland Farming On the Loess Plateau, Northwest A&F University, Xinong Rd. 26#, Yangling, 712100, Shaanxi, People's Republic of China.
- Institute of Soil and Water Conservation, Chinese Academy of Sciences and Ministry of Water Resources, Yangling, 712100, Shaanxi, People's Republic of China.
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16
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Fridolfsson E, Majaneva S, Hylander S. Limited effects of macro-nutrient ratios on thiamin content and transfer in phytoplankton and copepods. JOURNAL OF PLANKTON RESEARCH 2023; 45:360-371. [PMID: 37012974 PMCID: PMC10066808 DOI: 10.1093/plankt/fbad004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/28/2022] [Accepted: 01/08/2023] [Indexed: 06/19/2023]
Abstract
Vitamin B1 (thiamin) is primarily produced by bacteria, phytoplankton and fungi in aquatic food webs and transferred to higher trophic levels by ingestion. However, much remains unknown regarding the dynamics this water-soluble, essential micronutrient; e.g. how it relates to macronutrients (carbon, nitrogen and phosphorous). Nutrient limitation has been found to be related to periods of thiamin deficiency as well as in models. Hence, thiamin transfer to copepods from three phytoplankton species from different taxa was investigated, along with the effect of various nutrient regimes on thiamin content. Nutrient levels did not affect thiamin content of phytoplankton nor the transfer to copepods. Instead, phytoplankton displayed species-specific thiamin and macronutrient contents and whilst a higher thiamin content in the prey lead to higher levels in copepods, the transfer was lower for Skeletonema compared to Dunaliella and Rhodomonas. In all, thiamin transfer to copepods is not only dependent on thiamin content of the prey, but also the edibility and/or digestibility is of importance. Thiamin is essential for all organisms, and this study offers insights into the limited effect of macronutrients on the dynamics and transfer of thiamin in the aquatic food webs.
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Affiliation(s)
| | | | - Samuel Hylander
- Department of Biology and Environmental Sciences, Centre for Ecology and Evolution in Microbial model Systems – EEMiS, Linnaeus University, Kalmar SE-39182, Sweden
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17
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Wang C, Yang Q, Zhang C, Zhang X, Chen J, Liu K. Vegetation restoration of abandoned cropland improves soil ecosystem multifunctionality through alleviating nitrogen-limitation in the China Danxia. FRONTIERS IN PLANT SCIENCE 2023; 14:1116179. [PMID: 36925746 PMCID: PMC10011436 DOI: 10.3389/fpls.2023.1116179] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/05/2022] [Accepted: 02/10/2023] [Indexed: 06/18/2023]
Abstract
The microbial requirement for nutrient resources can be estimated by soil extracellular enzyme stoichiometry (EES) and their stoichiometries. Implementing the Grain for Green Program has significantly impacted land use and soil nutrient management in the China Danxia. However, drivers of soil microbial nutrient limitation changes in abandoned cropland (AC) remained unclear after vegetation restoration. Here, according to vector analysis, we evaluated microbial nutrient limitation by studying soil EES across vegetation restoration types (naturally restored secondary forests (NF) and artificially planted forests (AF)) with AC as a control. Results showed both NF and AF soils averaged higher C- and P- acquiring enzyme, indicating rapid C and P turnover rates after vegetation restoration. However, vegetation restoration resulted in higher C requirement for microorganisms with higher enzyme C:N and vector length. In addition, microorganisms shifted from N- (< 45°) to P-limited (> 45°) conditions with enzyme N:P less than 1 after vegetation restoration, and NF exacerbated microbial P limitation compared to AF. Decreased N limitation following vegetation restoration could be contributed to improving soil ecosystem multifunctionality. The greater variation of EES was explained by the interaction of pH, soil nutrient, and microbial biomass than by any one of these factors alone, suggesting that both abiotic and biotic factors regulate microbial nutrient limitation and microbial process. Overall, our results revealed vegetation restoration could alleviate N limitation in the China Danxia, and thus enhance soil ecosystem by regulating lower microbial N limitation, which provide insight into nutrient management strategies under ecological restoration of degraded areas.
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Affiliation(s)
- Chao Wang
- School of Resources and Planning, Guangzhou Xinhua University, Guangzhou, China
- Ecological Restoration Research Center, China Institute of south China Urban-Rural Economic and Social Development, Guangzhou, China
- College of Natural Resources and Environment, South China Agricultural University, Guangzhou, China
| | - Qiannan Yang
- School of Resources and Planning, Guangzhou Xinhua University, Guangzhou, China
- Ecological Restoration Research Center, China Institute of south China Urban-Rural Economic and Social Development, Guangzhou, China
| | - Chi Zhang
- College of Natural Resources and Environment, South China Agricultural University, Guangzhou, China
| | - Xiaolong Zhang
- School of Resources and Planning, Guangzhou Xinhua University, Guangzhou, China
- Ecological Restoration Research Center, China Institute of south China Urban-Rural Economic and Social Development, Guangzhou, China
| | - Jing Chen
- School of Resources and Planning, Guangzhou Xinhua University, Guangzhou, China
- Ecological Restoration Research Center, China Institute of south China Urban-Rural Economic and Social Development, Guangzhou, China
| | - Kexue Liu
- School of Resources and Planning, Guangzhou Xinhua University, Guangzhou, China
- Ecological Restoration Research Center, China Institute of south China Urban-Rural Economic and Social Development, Guangzhou, China
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18
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Beck M, Billoir E, Floury M, Usseglio-Polatera P, Danger M. A 34-year survey under phosphorus decline and warming: Consequences on stoichiometry and functional trait composition of freshwater macroinvertebrate communities. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 858:159786. [PMID: 36377090 DOI: 10.1016/j.scitotenv.2022.159786] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/15/2022] [Revised: 10/24/2022] [Accepted: 10/24/2022] [Indexed: 06/16/2023]
Abstract
Worldwide, freshwater systems are subjected to increasing temperatures and nutrient changes. Under phosphorus and nitrogen enrichment consumer communities are often thought to shift towards fast-growing and P-rich taxa, supporting the well-known link between growth rate and body stoichiometry. While these traits are also favoured under warming, the temperature effect on stoichiometry is less clear. As recently shown, there is a general link between functional traits and body stoichiometry, which makes the integration of stoichiometric traits a promising tool to help understanding the mechanisms behind taxonomic and functional community responses to nutrient changes and/or warming. Yet, such approaches have been scarcely developed at community level and on a long-term perspective. In this study, we investigated long-term responses in stoichiometry and functional trait composition of macroinvertebrate communities to nutrient changes (decreasing water P; increasing water N:P) and warming over a 34-year period in the Middle Loire River (France), testing the potentially opposing responses to these drivers. Both drivers should cause shifts in species composition, which will alter the overall community stoichiometry and functional composition following assumptions from ecological stoichiometry theory. We found that the macroinvertebrate community shifted towards P-poor taxa, causing significant trends in overall community stoichiometry which indicates long-term changes in the nutrient pool provided by these consumers (i.e. decrease in %N and %P, increase in N:P). Further, while the former high-P conditions favoured traits associated to detritus feeding and fast development (i.e. small maximum body size, short life duration), recent conditions favoured predators and slow-developing taxa. These results suggest nutrients to be a more important driver than temperature over this period. By providing a pivotal link between environmental changes and functional trait composition of communities, approaches based on stoichiometric traits offer sound perspectives to investigate ecological relationships between multiple drivers operating at various scales and ecosystem functioning.
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Affiliation(s)
| | | | - Mathieu Floury
- Univ Lyon, Université Claude Bernard Lyon 1, CNRS, ENTPE, UMR 5023 LEHNA, F- 69622, Villeurbanne, France
| | | | - Michael Danger
- LIEC, Université de Lorraine, France; Institut Universitaire de France, Paris, France
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An S, Yan Z, Song Y, Fu Q, Ge F, Wu Z, An W, Han W. Decoupling of N and P aggravated upward along food chains in an urban river ecosystem. CHEMOSPHERE 2023; 313:137555. [PMID: 36526137 DOI: 10.1016/j.chemosphere.2022.137555] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/17/2022] [Revised: 12/01/2022] [Accepted: 12/11/2022] [Indexed: 06/17/2023]
Abstract
Anthropogenic input of nutrient has profoundly influenced water quality and aquatic organisms, however, large and unbalanced nitrogen (N) and phosphorus (P) inputs (decoupling) can lead to a range of ecological health problems such as eutrophication. Whether and how the decoupling varies along the aquatic food chain remains poorly addressed. Here we chose an urban river ecosystem in the cosmopolis region of Beijing, with reclaimed water as the entire replenishment water source over 20 years, to demonstrate the decoupling pattern of N vs P across trophic levels. Results showed that organism C, N and P concentration increased, but N:P ratio decreased upward along the food chains, suggesting that this decoupling of N and P increased as trophic level ascends. Compared with natural freshwater ecosystem, the decoupling of N and P was aggravated in the reclaimed water river. Moreover, the homeostasis of N and P were higher at higher relative to lower trophic levels, and higher in macro-food chain relative to planktonic food chain. This study, for the first time, revealed the increasing decoupling of N vs P upward along the major food chains in an urban aquatic ecosystem, and could improve the understanding of nutrient cycling at the food chain level under human disturbance, and provide useful information for ecological restoration and eutrophication control of urban wetlands replenished with reclaimed water.
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Affiliation(s)
- Shenqun An
- College of Resources and Environmental Sciences, China Agricultural University, Beijing, 100193, China
| | - Zhengbing Yan
- State Key Laboratory of Vegetation and Environmental Change, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China
| | - Ying Song
- Beijing Drainage Group Co., Ltd, Beijing, 100124, China
| | - Qiang Fu
- Beijing Drainage Group Co., Ltd, Beijing, 100124, China
| | - Feiyang Ge
- College of Resources and Environmental Sciences, China Agricultural University, Beijing, 100193, China
| | - Zehao Wu
- College of Resources and Environmental Sciences, China Agricultural University, Beijing, 100193, China
| | - Wei An
- Key Laboratory of Drinking Water Science and Technology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China
| | - Wenxuan Han
- College of Resources and Environmental Sciences, China Agricultural University, Beijing, 100193, China.
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20
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Xu J, Li L, Wang H, Gao Z, Wang C, Sun R, Zhang Y, Xu W, Hou X, Xu R. Adsorption Characteristics of Indigenous Chromium-Resistant Aspergillus niger Strain Isolated from Red Soil for Remediation of Toxic Chromium in Red Soil Environments. TOXICS 2022; 11:31. [PMID: 36668757 PMCID: PMC9866775 DOI: 10.3390/toxics11010031] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/11/2022] [Accepted: 12/26/2022] [Indexed: 06/17/2023]
Abstract
The microbial treatment of soil has great potential to reduce chromium pollution. Here, an indigenous chromium-resistant Aspergillus niger strain (A1) was isolated and screened from heavily chromium-contaminated red soil in Yunnan Province, China using a traditional isolation method and a selective culture experiment. The molecular identification of A1 was achieved using 18S rRNA sequencing. The tolerance of the strain to toxic chromium was evaluated through pure laboratory culture. The adsorption effect and mechanism of A1 on chromium in red soil were further studied. The study concluded that A1 exhibited strong activity with exposure to 500 mg·L-1 Cr6+. Chromium adsorption by A. niger occurred mainly through intracellular metabolism, surface complexations with EPS, and chemical reduction with -C=C-, -OXuH, NH2, and -C=0. The optimized results showed that A1 had the best Cr6+ removal effect at pH 4, 40 °C, and a 60 h culture time. Compared with the inoculating of exogenous microbial agents, after inoculating A1 into the chromium-contaminated red soil, Cr6+ content was significantly reduced, and the high-toxicity chromium state (water-soluble and exchange states) decreased, whereas the low-toxicity chromium state (precipitation and residue states) increased. The results of red soil ITS also showed that the inoculation of indigenous microorganisms can better colonize the red soil. This study proves the feasibility of the application of indigenous A. niger to address red soil chromium pollution and provides a new idea and theoretical support for red soil remediation.
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Affiliation(s)
- Jiwei Xu
- School of Energy and Environment Science, Yunnan Normal University, Kunming 650500, China
- Provincial Key Laboratory of Rural Energy Engineering, Kunming 650500, China
| | - Lumeng Li
- School of Energy and Environment Science, Yunnan Normal University, Kunming 650500, China
| | - Huabin Wang
- School of Energy and Environment Science, Yunnan Normal University, Kunming 650500, China
| | - Zhanyuan Gao
- School of Energy and Environment Science, Yunnan Normal University, Kunming 650500, China
| | - Chuanshu Wang
- School of Energy and Environment Science, Yunnan Normal University, Kunming 650500, China
- Provincial Key Laboratory of Rural Energy Engineering, Kunming 650500, China
| | - Rong Sun
- School of Energy and Environment Science, Yunnan Normal University, Kunming 650500, China
| | - Yong Zhang
- School of Energy and Environment Science, Yunnan Normal University, Kunming 650500, China
- Provincial Key Laboratory of Rural Energy Engineering, Kunming 650500, China
| | - Wumei Xu
- School of Energy and Environment Science, Yunnan Normal University, Kunming 650500, China
| | - Xiying Hou
- School of Energy and Environment Science, Yunnan Normal University, Kunming 650500, China
| | - Rui Xu
- School of Energy and Environment Science, Yunnan Normal University, Kunming 650500, China
- Provincial Key Laboratory of Rural Energy Engineering, Kunming 650500, China
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21
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Liu H, Pausch J, Wu Y, Xu H, Liu G, Ma L, Xue S. Implications of plant N/P stoichiometry influenced by arbuscular mycorrhizal fungi for stability of plant species and community in response to nutrient limitation. OIKOS 2022. [DOI: 10.1111/oik.09649] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Hongfei Liu
- State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Northwest A&F Univ. Yangling PR China
- Agroecology, Bayreuth Center of Ecology and Environmental Research (BayCEER), Univ. of Bayreuth Bayreuth Germany
- Chinese Academy of Sciences and Ministry Water Resources, Inst. of Soil and Water Conservation Yangling PR China
| | - Johanna Pausch
- Agroecology, Bayreuth Center of Ecology and Environmental Research (BayCEER), Univ. of Bayreuth Bayreuth Germany
| | - Yang Wu
- State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Northwest A&F Univ. Yangling PR China
- Chinese Academy of Sciences and Ministry Water Resources, Inst. of Soil and Water Conservation Yangling PR China
| | - Hongwei Xu
- State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Northwest A&F Univ. Yangling PR China
- Chinese Academy of Sciences and Ministry Water Resources, Inst. of Soil and Water Conservation Yangling PR China
| | - Guobin Liu
- State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Northwest A&F Univ. Yangling PR China
- Chinese Academy of Sciences and Ministry Water Resources, Inst. of Soil and Water Conservation Yangling PR China
| | - LiHui Ma
- State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Northwest A&F Univ. Yangling PR China
- Chinese Academy of Sciences and Ministry Water Resources, Inst. of Soil and Water Conservation Yangling PR China
| | - Sha Xue
- State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Northwest A&F Univ. Yangling PR China
- Chinese Academy of Sciences and Ministry Water Resources, Inst. of Soil and Water Conservation Yangling PR China
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22
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Yu DW, Duan SJ, Zhang XC, Yin DQ, Wang SJ, Chen JS, Lei NF. Effects of nutrient supply on leaf stoichiometry and relative growth rate of three stoloniferous alien plants. PLoS One 2022; 17:e0278656. [PMID: 36459510 PMCID: PMC9718409 DOI: 10.1371/journal.pone.0278656] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2022] [Accepted: 11/21/2022] [Indexed: 12/04/2022] Open
Abstract
Different nutrient supply brings about changes in leaf stoichiometry, which may affect growth rate and primary production of plants. Invasion of alien plants is a severe threat to biodiversity and ecosystem worldwide. A pot experiment was conducted by using three stoloniferous alien plants Wedelia trilobata, Alternanther philoxeroides and Hydrocotyle vulgaris to investigate effects of nutrient supply on their leaf stoichiometry and relative growth rate. Different nitrogen or phosphorus supply was applied in the experiment (N1:1 mmol L-1, N2:4 mmol L-1, and N3:8 mmol L-1, P1:0.15 mmol L-1, P2:0.6 mmol L-1 and P3:1.2 mmol L-1). Nitrogen and phosphorus concentrations in leaves of the three alien plants significantly increased with increase of nitrogen supply. With increase of phosphorus supply, nitrogen or phosphorus concentration of leaf was complex among the three alien plants. N:P ratio in leaf of the three alien plants subjected to different levels of nutrient supply was various. A positive correlation between relative growth rate and N:P ratio of the leaf is observed in W. trilobata and A. philoxeroides suffering from N-limitation. A similar pattern was not observed in Hydrocotyle vulgaris. We tentatively concluded that correlations between relative growth rate and N: P ratio of the leaf could be affected by species as well as nutrient supply. It is suggested that human activities, invasive history, local abundance of species et al maybe play an important role in the invasion of alien plants as well as relative growth rate.
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Affiliation(s)
- Dong-Wei Yu
- College of Life Science, Sichuan Normal University, Chengdu, China
| | - Su-Juan Duan
- College of Life Science, Sichuan Normal University, Chengdu, China
| | - Xiao- Chao Zhang
- College of Ecology and Environment, Chengdu University of Technology, Chengdu, China
| | - Da-Qiu Yin
- China Huaneng Group Co., Ltd, Beijing, China
| | | | - Jin-Song Chen
- College of Life Science, Sichuan Normal University, Chengdu, China
- * E-mail: (J-SC); (N-FL)
| | - Ning-Fei Lei
- College of Ecology and Environment, Chengdu University of Technology, Chengdu, China
- * E-mail: (J-SC); (N-FL)
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23
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Bagedeng, Xia G, Lin T, Xu Z, Wang Y. Analysis of nutrient resorption efficiency and homeostasis of four tree species in Kanas natural forest, Xinjiang, China. Front Ecol Evol 2022. [DOI: 10.3389/fevo.2022.1046444] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
To explore the differences in stoichiometric homeostasis and resorption efficiency of nitrogen (NRE) and phosphorus (PRE) of tree species in Kanas natural forest. We selected four primary tree species: Larix sibirica (LS), Picea obovata (PO), Pinus sibirica (PS), and Betula pendula (BP) and measured concentrations of carbon (C), nitrogen (N), and phosphorus (P) in fresh leaves, leaf litters, and soil. Our findings showed that compared to deciduous species (LS, BP), evergreen species (PO, PS) had higher fresh leaf C concentrations and C: N ratios. As opposed to evergreen plants, deciduous species have higher levels of fresh leaf N concentration, while the P concentration and C: P did not exhibit such a pattern. Mass-based NRE and PRE averaged 52.55 and 49.16%, respectively, with a significant difference among life forms in NRE but no varied in PRE. NRE increased with N concentration in fresh leaves of BP, PO, and LS, NRE decreased with N concentration in leaf litters of all species; PRE increased with P concentration in fresh leaves of all species, PRE decreased with P concentration in leaf litters of LS, PO, and PS. Only NRE of BP and PS and PRE of PS showed significant relationship with soil N and P concentrations, respectively. Neither NRE nor PRE was insignificantly related to mean annual temperature (MAT) for all species. The N concentration of all species showed strict homeostasis corresponding to their being limited by the N element. Only the P concentration of PS and PO and N: P ratio of PS varied with corresponding traits in soil. Overall, our results provide insight into the N and P nutrient use characteristics of tree species in the Kanas natural forest and can provide a scientific basis for regional ecological restoration.
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Wei H, Liang Y, Luo Q, Gu D, Mu X, Hu Y. Environmental‐related variation of stoichiometric traits in body and organs of non‐native sailfin catfishes
Pterygoplichthys
spp. Ecol Evol 2022; 12:e9483. [PMCID: PMC9636514 DOI: 10.1002/ece3.9483] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2021] [Revised: 10/14/2022] [Accepted: 10/17/2022] [Indexed: 11/07/2022] Open
Affiliation(s)
- Hui Wei
- Key Laboratory of Prevention and Control for Aquatic Invasive Alien Species (Ministry of Agriculture and Rural Affairs), Key Laboratory of Alien Species and Ecological Security (CAFS) Pearl River Fisheries Research Institute, Chinese Academy of Fisheries Science Guangzhou Guangdong China
| | - Yanting Liang
- School of Marine Sciences Guangxi University Nanning Guangxi China
| | - Qiang Luo
- College of Life Sciences and Food Engineering Yibin University Yibin Sichuan China
| | - Dangen Gu
- Key Laboratory of Prevention and Control for Aquatic Invasive Alien Species (Ministry of Agriculture and Rural Affairs), Key Laboratory of Alien Species and Ecological Security (CAFS) Pearl River Fisheries Research Institute, Chinese Academy of Fisheries Science Guangzhou Guangdong China
| | - Xidong Mu
- Key Laboratory of Prevention and Control for Aquatic Invasive Alien Species (Ministry of Agriculture and Rural Affairs), Key Laboratory of Alien Species and Ecological Security (CAFS) Pearl River Fisheries Research Institute, Chinese Academy of Fisheries Science Guangzhou Guangdong China
| | - Yinchang Hu
- Key Laboratory of Prevention and Control for Aquatic Invasive Alien Species (Ministry of Agriculture and Rural Affairs), Key Laboratory of Alien Species and Ecological Security (CAFS) Pearl River Fisheries Research Institute, Chinese Academy of Fisheries Science Guangzhou Guangdong China
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25
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Zhao Y, Li T, Liu J, Sun J, Zhang P. Ecological stoichiometry, salt ions and homeostasis characteristics of different types of halophytes and soils. FRONTIERS IN PLANT SCIENCE 2022; 13:990246. [PMID: 36311082 PMCID: PMC9606715 DOI: 10.3389/fpls.2022.990246] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/09/2022] [Accepted: 09/21/2022] [Indexed: 06/16/2023]
Abstract
Studying eco-stoichiometric and salt ions characteristics of halophytes and soils is helpful to understand the distribution mechanism of nutrients and salts in halophytes and their adaptation strategies to salinized habitats. In this study, three different types of halophytes (Phragmites communis-salt repellent, Suaeda salsa-salt accumulating, and Aeluropus sinensis- salt secreting) and soils were selected to analyze the differences and correlations of C, N, P stoichiometry and salt accumulation. Results showed that: (1) the total nitrogen (TN) and total phosphorus (TP) contents of the three halophytes' leaves were significantly higher than those of the roots and stems, and the C: N ratios were contrary to the difference mentioned above. The growth of P. communis and S. salsa was mainly limited by P, whereas A. sinensis was limited by both N and P. S. salsa had a stronger absorption capacity for Na+ and Mg2+ than P. communis and A. sinensis. The interrelationship between salt ions and C, N and P ecological stoichiometry of halophyte organs was influenced by the type of halophytes. (2) The TC, TN, and N: P contents of the three halophyte communities in the surface soil (0-20 cm) were significantly higher than the other soil layers, while P did not differ significantly among soil layers. The planting of different halophytes affected the TC, TN, C: N, N: P values and the content of seven ions in the surface soil. SO4 2-was positively correlated with soil TC, TN, N:P, and Na+ were positively correlated with soil TC in three halophytes. (3) The P. communis TC and A. sinensis TN contents were negatively correlated with soil TC, TN, C: P, and N: P, whereas TC contents of S. salsa were positively correlated with the aforementioned soil indicators. The P. communis and A. sinensis TC contents were negatively correlated with soil K+, while this correlation was opposite between S. salsa and soil. (4) The homeostasis of C, N, and P elements in all three halophytes showed that C > N > P, the homeostasis was strongest in A. sinensis and weakest in S. salsa. The results provide a theoretical basis for the restoration of saline land in the Yellow River Delta.
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Affiliation(s)
- Yinghan Zhao
- Shandong Key Laboratory of Eco-Environmental Science for Yellow River Delta, Binzhou University, Binzhou, China
- College of Forestry, Shandong Agricultural University, Taian, China
| | - Tian Li
- Shandong Key Laboratory of Eco-Environmental Science for Yellow River Delta, Binzhou University, Binzhou, China
| | - Junhan Liu
- Shandong Key Laboratory of Eco-Environmental Science for Yellow River Delta, Binzhou University, Binzhou, China
- College of Forestry, Shandong Agricultural University, Taian, China
| | - Jingkuan Sun
- Shandong Key Laboratory of Eco-Environmental Science for Yellow River Delta, Binzhou University, Binzhou, China
| | - Ping Zhang
- College of Life Sciences, Ludong University, Yantai, China
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Biogeographic Patterns of Leaf Element Stoichiometry of Stellera chamaejasme L. in Degraded Grasslands on Inner Mongolia Plateau and Qinghai-Tibetan Plateau. PLANTS 2022; 11:plants11151943. [PMID: 35893647 PMCID: PMC9370359 DOI: 10.3390/plants11151943] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/05/2022] [Revised: 07/21/2022] [Accepted: 07/22/2022] [Indexed: 11/22/2022]
Abstract
Plant leaf stoichiometry reflects its adaptation to the environment. Leaf stoichiometry variations across different environments have been extensively studied in grassland plants, but little is known about intraspecific leaf stoichiometry, especially for widely distributed species, such as Stellera chamaejasme L. We present the first study on the leaf stoichiometry of S. chamaejasme and evaluate its relationships with environmental variables. S. chamaejasme leaf and soil samples from 29 invaded sites in the two plateaus of distinct environments [the Inner Mongolian Plateau (IM) and Qinghai-Tibet Plateau (QT)] in Northern China were collected. Leaf C, N, P, and K and their stoichiometric ratios, and soil physicochemical properties were determined and compared with climate information from each sampling site. The results showed that mean leaf C, N, P, and K concentrations were 498.60, 19.95, 2.15, and 6.57 g kg−1; the average C:N, C:P, N:P, N:K and K:P ratios were 25.20, 245.57, 9.81, 3.13, and 3.21, respectively. The N:P:K-ratios in S. chamaejasme leaf might imply that its growth is restricted by K- or K+N. Moreover, the soil physicochemical properties in the S. chamaejasme-infested areas varied remarkably, and few significant correlations between S. chamaejasme leaf ecological stoichiometry and soil physicochemical properties were observed. These indicate the nutrient concentrations and stoichiometry of S. chamaejasme tend to be insensitive to variations in the soil nutrient availability, resulting in their broad distributions in China’s grasslands. Besides, different homeostasis strength of the C, N, K, and their ratios in S. chamaejasme leaves across all sites were observed, which means S. chamaejasme could be more conservative in their use of nutrients improving their adaptation to diverse conditions. Moreover, the leaf C and N contents of S. chamaejasm were unaffected by any climate factors. However, the correlation between leaf P content and climate factors was significant only in IM, while the leaf K happened to be significant in QT. Besides, MAP or MAT contribution was stronger in the leaf elements than soil by using mixed effects models, which illustrated once more the relatively weak effect of the soil physicochemical properties on the leaf elements. Finally, partial least squares path modeling suggested that leaf P or K contents were affected by different mechanisms in QT and IM regions, suggesting that S. chamaejasme can adapt to changing environments by adjusting its relationships with the climate or soil factors to improve its survival opportunities in degraded grasslands.
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Zhang B, Chen H, Deng M, Li J, González AL, Wang S. High dimensionality of stoichiometric niches in soil fauna. Ecology 2022; 103:e3741. [PMID: 35524916 DOI: 10.1002/ecy.3741] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/23/2021] [Revised: 02/25/2022] [Accepted: 03/18/2022] [Indexed: 11/09/2022]
Abstract
The ecological niche is a fundamental concept to understand species coexistence in natural communities. The recently developed framework of the multidimensional stoichiometric niche (MSN) characterizes species niches using chemical elements in living organisms. Despite the fact that living organisms are composed by multiple elements, stoichiometric studies have so far mostly focused on carbon (C), nitrogen (N), and phosphorus (P), and therefore a quantitative analysis of the dimensionality of the MSN in living organisms is still lacking, particularly for animals. Here we quantified ten elements composing the biomass of nine soil animal taxa (958 individuals) from three trophic groups. We found that all ten elements exhibited large variation among taxa, which was partially explained by their phylogeny. Overlaps of MSNs among the nine soil animal taxa were relatively smaller based on ten elements, compared with those based on only C, N, and P. Discriminant analysis using all ten elements successfully differentiated among the nine taxa (accuracy: 90%), whereas that using only C, N, and P resulted in a lower accuracy (60%). Our findings provide new evidence for MSN differentiation in soil fauna and demonstrate the high dimensionality of organismal stoichiometric niches beyond C, N, and P.
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Affiliation(s)
- Bing Zhang
- Key Laboratory for Earth Surface Processes of the Ministry of Education, Institute of Ecology, College of Urban and Environmental Science, Peking University, Beijing, China
| | - Haozhen Chen
- Key Laboratory for Earth Surface Processes of the Ministry of Education, Institute of Ecology, College of Urban and Environmental Science, Peking University, Beijing, China
| | - Mingqin Deng
- Key Laboratory for Earth Surface Processes of the Ministry of Education, Institute of Ecology, College of Urban and Environmental Science, Peking University, Beijing, China
| | - Jingyi Li
- Key Laboratory for Earth Surface Processes of the Ministry of Education, Institute of Ecology, College of Urban and Environmental Science, Peking University, Beijing, China
| | - Angélica L González
- Department of Biology & Center for Computational and Integrative Biology, Rutgers University, Camden, NJ, USA
| | - Shaopeng Wang
- Key Laboratory for Earth Surface Processes of the Ministry of Education, Institute of Ecology, College of Urban and Environmental Science, Peking University, Beijing, China
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28
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Maselli M, Van de Waal DB, Hansen PJ. Impacts of inorganic nutrients on the physiology of a mixoplanktonic ciliate and its cryptophyte prey. Oecologia 2022; 199:41-52. [PMID: 35460438 DOI: 10.1007/s00442-022-05162-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2021] [Accepted: 04/02/2022] [Indexed: 11/24/2022]
Abstract
Many marine planktonic ciliates retain functional chloroplasts from their photosynthetic prey and use them to incorporate inorganic carbon via photosynthesis. While this strategy provides the ciliates with carbon, little is known about their ability to incorporate major dissolved inorganic nutrients, such as nitrogen and phosphorus. Here, we studied how ciliates respond to different concentrations of dissolved inorganic nitrogen and phosphorus. Specifically, we tested the direct and indirect effects of nutrient availability on the ciliate Strombidium cf. basimorphum fed the cryptophyte prey Teleaulax amphioxeia. We assessed responses in the rates of growth, ingestion, photosynthesis, inorganic nutrient uptake, and excretion. Our results show that the prey changed its carbon content depending on the nutrient concentrations. Low inorganic nutrient concentrations increased S. cf. basimorphum growth and prey ingestion. The higher carbon content of the prey under these low nutrient conditions likely supported the growth of the ciliate, while the higher carbon:nutrient stoichiometry of the prey led to the higher ingestion rates. The low carbon content of the prey at high nutrient concentrations resulted in reduced growth of S. cf. basimorphum, which indicates that carbon acquired via photosynthesis in the ciliate cannot compensate for the ingestion of prey with low carbon content. In conclusion, our findings show S. cf. basimorphum is not able to utilize dissolved inorganic nitrogen and phosphorus for growth, and this species seems to be well adapted to exploit its prey when grown at low nutrient conditions.
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Affiliation(s)
- Maira Maselli
- Marine Biological Section, Department of Biology, University of Copenhagen, Helsingør, Denmark. .,Stazione Zoologica Anton Dohrn, Villa Comunale, 80121, Napoli, Italy.
| | - Dedmer B Van de Waal
- Department of Aquatic Ecology, Netherlands Institute of Ecology (NIOO-KNAW), Wageningen, The Netherlands
| | - Per Juel Hansen
- Marine Biological Section, Department of Biology, University of Copenhagen, Helsingør, Denmark
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Wang H, Garcia PV, Ahmed S, Heggerud CM. Mathematical comparison and empirical review of the Monod and Droop forms for resource-based population dynamics. Ecol Modell 2022. [DOI: 10.1016/j.ecolmodel.2022.109887] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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30
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Zhao R, He M, Jiang C, Liu F. Soil microbial stoichiometry and community structure responses to long-term natural forest conversion to plantations in a subtropical region. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:27560-27570. [PMID: 34981382 DOI: 10.1007/s11356-021-17893-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/05/2021] [Accepted: 11/27/2021] [Indexed: 05/27/2023]
Abstract
Soil microbial stoichiometry reflects carbon (C) and nutrient (e.g., nitrogen (N) and phosphorus (P)) elemental balances under land-use change (LUC). However, how soil microbial community (SMC) structure and stoichiometry respond to long-term LUC in forests is still unclear. Here, we investigated three 36-year-old typical plantations, Cryptomeria fortunei, Metasequoia glyptostroboides, and Cunninghamia lanceolata, and the natural forest to assess their soil microbial stoichiometry and SMC structure. Three plots (30×30 m2) were randomly set in each forest site. In each plot of every forest site, soil samples of three depths (0-10, 10-30, and 30-60 cm) were collected. Dissolved organic C, N, and P (abbreviated as DOC, DON, and DOP, respectively) and environmental factors were measured. We also detected microbial biomass C, N, and P as well as SMC structure. The results showed that the soil microbial C:N:P stoichiometry had a strong or strict homeostasis regardless of soil depth and exhibited decoupling from the SMC structure at each depth. The SMC structure across forest types was mainly driven by mean annual soil temperature (MAST) and DOC at 0-10 cm depth, by soil water content and MAST at 10-30 cm depth, and by DOC to DOP ratio at 30-60 cm depth. Thus, SMC structure could be jointly regulated by available resources and environment. These results suggest that the C dynamics in forests tend to gain resilience or re-equilibrium over more than three decades after forest conversion. These findings highlight the importance of reforested plantations forest management for sustaining soil C over a long term.
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Affiliation(s)
- Rudong Zhao
- Key Laboratory of Aquatic Botany and Watershed Ecology, Wuhan Botanical Garden, Chinese Academy of Sciences, Wuhan, 43007, China
| | - Mei He
- Key Laboratory of Aquatic Botany and Watershed Ecology, Wuhan Botanical Garden, Chinese Academy of Sciences, Wuhan, 43007, China
| | - Canlan Jiang
- College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing, 210095, China
| | - Feng Liu
- Key Laboratory of Aquatic Botany and Watershed Ecology, Wuhan Botanical Garden, Chinese Academy of Sciences, Wuhan, 43007, China.
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31
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李 子. Investing the Stoichiometric Coupling between Phytoplankton and Zooplankton in Freshwater. INTERNATIONAL JOURNAL OF ECOLOGY 2022. [DOI: 10.12677/ije.2022.112021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Zhao R, He M, Yue P, Huang L, Liu F. Linking soil organic carbon stock to microbial stoichiometry, carbon sequestration and microenvironment under long-term forest conversion. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2022; 301:113940. [PMID: 34731964 DOI: 10.1016/j.jenvman.2021.113940] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/05/2021] [Revised: 09/14/2021] [Accepted: 10/11/2021] [Indexed: 06/13/2023]
Abstract
Forest conversion can drastically impact carbon (C) and nutrient processes and microbial stoichiometry, which will modify soil organic C (SOC) stock. However, SOC stock dynamics and its underlying mechanisms induced by long-term forest conversion remain unclear. Three well-protected plantations converted from natural forests for 36 years were compared, i.e., Cryptomeria fortunei (CF), Metasequoia glyptostroboides (MG) and Cunninghamia lanceolata (CL), with a natural forest (NF) as a control. SOC stock size and stability across three soil depths (0-10, 10-30 and 30-60 cm) were examined with aggregate-based method. Forest floors and fine roots were treated as C and nutrient inputs while soil respiration (Rs) was treated as C output. Soil microbial biomass C, nitrogen and phosphorus were measured to calculate microbial stoichiometry, as well as microenvironment and soil physicochemical properties. The relationships between SOC stock (size and stability) and these factors were explored using structural equation model. The results showed that microbial stoichiometry had strong or strict homeostasis at each soil depth. At 0-10 cm soil deep, SOC stock size varied with tree species (following the rank of CL > NF ≈ CF > MG) but its stability increased in all forest conversion types, regulated by forest floor quantity and quality associated with Rs; at 10-30 cm soil deep, the SOC stock sizes decreased in CF and MG, but SOC stock stability increased in MG, jointly driven by fine root quality and microenvironment; at 30-60 cm soil deep, SOC stock size decreased but its stability increased in MG, whereas both its size and stability had few changes in CF or CL, modified by soil physicochemical property associated with microbial stoichiometry and Rs. Overall, the effects of microbial stoichiometry and microenvironment on SOC stock were not pronounced. Thus, SOC stock size changed with soil depth and tree species but its stability tended to be steady at all depths varying with tree species. These results suggest that SOC stock size and stability are mainly determined by self-regulation process of forest ecosystems over more than three-decade after forest conversion, which will help us more accurately assess C sequestration strategies regarding long-term forest conversion.
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Affiliation(s)
- Rudong Zhao
- Key Laboratory of Aquatic Botany and Watershed Ecology, Wuhan Botanical Garden, Chinese Academy of Sciences, Wuhan, 43007, China.
| | - Mei He
- Key Laboratory of Aquatic Botany and Watershed Ecology, Wuhan Botanical Garden, Chinese Academy of Sciences, Wuhan, 43007, China
| | - Pengyun Yue
- Key Laboratory of Aquatic Botany and Watershed Ecology, Wuhan Botanical Garden, Chinese Academy of Sciences, Wuhan, 43007, China; University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Lin Huang
- Key Laboratory of Aquatic Botany and Watershed Ecology, Wuhan Botanical Garden, Chinese Academy of Sciences, Wuhan, 43007, China; University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Feng Liu
- Key Laboratory of Aquatic Botany and Watershed Ecology, Wuhan Botanical Garden, Chinese Academy of Sciences, Wuhan, 43007, China.
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Ding D, Arif M, Liu M, Li J, Hu X, Geng Q, Yin F, Li C. Plant-soil interactions and C:N:P stoichiometric homeostasis of plant organs in riparian plantation. FRONTIERS IN PLANT SCIENCE 2022; 13:979023. [PMID: 35979078 PMCID: PMC9376457 DOI: 10.3389/fpls.2022.979023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/27/2022] [Accepted: 07/11/2022] [Indexed: 05/06/2023]
Abstract
Carbon (C), nitrogen (N), and phosphorus (P) stoichiometric ratios give valuable insight into ecosystem function. The purpose of the present study is to probe into the C, N, and P stoichiometric characteristics in various organs and their relationships with soil factors of the dominant deciduous conifer plant species (Taxodium ascendens and Taxodium distichum) during afforestation in the riparian zone of Three Gorges Reservoir. The results showed only a small change in the concentration of C in different plant organs and soils. T. ascendens contained mean N and P concentrations of 7.63 and 1.54 g/kg in fine roots, 5.10 and 0.56 g/kg in stems, and 15.48 and 2.30 g/kg in leaves, respectively. Whereas T. distichum had a mean N and P concentration of 7.08 and 1.37 g/kg in fine roots, 4.84 and 0.59 g/kg in stems, and 16.89 and 2.23 g/kg in leaves. The N:P ratios in all organs were below 14, indicating that N may have inhibited tree growth. The fine roots P and N:P of T. distichum were weak plasticity and weak homeostasis, and those of T. ascendens were plasticity and weak plasticity. Their stems and leaves adhere to strict homeostasis. N concentrations were significantly positively related to P concentrations in every tissue (except the stems of T. ascendens), and C concentrations were significantly positively associated with P concentrations in the stems and leaves of T. ascendens and T. distichum (p < 0.05). Likewise, soil P and fine root P were positively associated (p < 0.01). This study contributes to the understanding of deciduous conifer plant stoichiometry. It demonstrates N, P, and N:P stoichiometric homeostasis in T. ascendens and T. distichum, which can withstand flooding and are suitable for vegetation restoration in the hydro-fluctuation zone.
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Affiliation(s)
- Dongdong Ding
- Key Laboratory of Eco-Environments in the Three Gorges Reservoir Region (Ministry of Education), Chongqing Key Laboratory of Plant Resource Conservation and Germplasm Innovation, College of Life Sciences, Southwest University, Chongqing, China
| | - Muhammad Arif
- Key Laboratory of Eco-Environments in the Three Gorges Reservoir Region (Ministry of Education), Chongqing Key Laboratory of Plant Resource Conservation and Germplasm Innovation, College of Life Sciences, Southwest University, Chongqing, China
- Biological Science Research Center, Academy for Advanced Interdisciplinary Studies, Southwest University, Chongqing, China
| | - Minghui Liu
- Key Laboratory of Eco-Environments in the Three Gorges Reservoir Region (Ministry of Education), Chongqing Key Laboratory of Plant Resource Conservation and Germplasm Innovation, College of Life Sciences, Southwest University, Chongqing, China
| | - Jiajia Li
- Key Laboratory of Eco-Environments in the Three Gorges Reservoir Region (Ministry of Education), Chongqing Key Laboratory of Plant Resource Conservation and Germplasm Innovation, College of Life Sciences, Southwest University, Chongqing, China
| | - Xin Hu
- Key Laboratory of Eco-Environments in the Three Gorges Reservoir Region (Ministry of Education), Chongqing Key Laboratory of Plant Resource Conservation and Germplasm Innovation, College of Life Sciences, Southwest University, Chongqing, China
| | - Qianwen Geng
- Key Laboratory of Eco-Environments in the Three Gorges Reservoir Region (Ministry of Education), Chongqing Key Laboratory of Plant Resource Conservation and Germplasm Innovation, College of Life Sciences, Southwest University, Chongqing, China
| | - Fan Yin
- Key Laboratory of Eco-Environments in the Three Gorges Reservoir Region (Ministry of Education), Chongqing Key Laboratory of Plant Resource Conservation and Germplasm Innovation, College of Life Sciences, Southwest University, Chongqing, China
| | - Changxiao Li
- Key Laboratory of Eco-Environments in the Three Gorges Reservoir Region (Ministry of Education), Chongqing Key Laboratory of Plant Resource Conservation and Germplasm Innovation, College of Life Sciences, Southwest University, Chongqing, China
- Biological Science Research Center, Academy for Advanced Interdisciplinary Studies, Southwest University, Chongqing, China
- *Correspondence: Changxiao Li,
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Fan J, Liu T, Liao Y, Li Y, Yan Y, Lu X. Distinguishing Stoichiometric Homeostasis of Soil Microbial Biomass in Alpine Grassland Ecosystems: Evidence From 5,000 km Belt Transect Across Qinghai-Tibet Plateau. FRONTIERS IN PLANT SCIENCE 2021; 12:781695. [PMID: 34925425 PMCID: PMC8675581 DOI: 10.3389/fpls.2021.781695] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/23/2021] [Accepted: 10/28/2021] [Indexed: 06/14/2023]
Abstract
The biogeographic characteristics of soil microbial biomass stoichiometry homeostasis and also its mechanisms are commonly thought to be key factors for the survival strategies and resource utilization of soil microbes under extreme habitat. In this work, we conducted a 5,000-km transect filed survey in alpine grassland across Qinghai-Tibet Plateau in 2015 to measure soil microbial biomass carbon (MBC) and nitrogen (MBN) across alpine steppe and meadow. Based on the differences of climate and soil conditions between alpine steppe and meadow, the variation coefficient was calculated to investigate the homeostatic degree of MBC to MBN. Furthermore, the "trade-off" model was utilized to deeply distinguish the homeostasis degree of MBC/MBN between alpine steppe and meadow, and the regression analysis was used to explore the variability of trade-off in response to environmental factors in the alpine grassland. The results showed that the coefficient of variation (CV) of MBC/MBN in alpine meadow (CV = 0.4) was lower than alpine steppe (CV = 0.7). According to the trade-off model, microbial turnover activity of soil N relative to soil C increased rapidly and then decreased slightly with soil organic carbon (SOC), soil total nitrogen (STN), and soil water content across alpine meadow. Nevertheless, in alpine steppe, SOC/STN had a positive effect on microbial turnover of soil N. These results suggested that water, heat, and soil nutrients availability were the key factors affecting the C:N stoichiometry homeostasis of soil microbial biomass in Qinghai-Tibet Plateau (QTP)'s alpine grassland. Since the difference of survival strategy of the trade-off demands between soil C and N resulting in different patterns and mechanism, the stoichiometry homeostasis of soil microbial biomass was more stable in alpine meadow than in alpine steppe.
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Affiliation(s)
- Jihui Fan
- Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu, China
| | - Tianyuan Liu
- Key Laboratory of Ecosystem Network Observation and Modelling, Synthesis Research Centre of Chinese Ecosystem Research Network, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, China
- College of Resources and Environment, University of Chinese Academy of Sciences, Beijing, China
| | - Ying Liao
- Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu, China
- College of Resources and Environment, University of Chinese Academy of Sciences, Beijing, China
| | - Yiying Li
- Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu, China
- College of Resources and Environment, University of Chinese Academy of Sciences, Beijing, China
| | - Yan Yan
- Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu, China
| | - Xuyang Lu
- Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu, China
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Gunawardena T. Update on Vascular Complications After Renal Transplantation. EXP CLIN TRANSPLANT 2021; 20:333-341. [PMID: 34775937 DOI: 10.6002/ect.2021.0303] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Renal transplant is the treatment of choice for endstage renal failure. Since the first successful kidney transplant in 1954, advances in immunosuppression, surgical techniques, and posttransplant medical care have drastically improved the outcomes of this procedure. Despite these advances, surgical complications after renal transplant remain a challenge that can result in serious morbidity, graft loss, and recipient mortality. A significant proportion of surgical complications will have a vascular origin. Some of these vascular complications can cause irreversible damage to the transplanted kidney unless they are identified and treated urgently. In this review, common vascular complications of renal transplant are discussed, with emphasis on their mode of presentation, diagnosis, current management, and outcomes. Such knowledge can be useful for transplant clinicians, for prompt diagnosis and appropriate management of these complications.
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Affiliation(s)
- Thilina Gunawardena
- From the Department of Renal Transplant, Royal Liverpool University Hospital, Liverpool, United Kingdom
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36
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Patterns and Internal Stability of Carbon, Nitrogen, and Phosphorus in Soils and Soil Microbial Biomass in Terrestrial Ecosystems in China: A Data Synthesis. FORESTS 2021. [DOI: 10.3390/f12111544] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Inspired by the strict constraint ratio (relatively low variability) between carbon (C), nitrogen (N), and phosphorus (P) in global soils and soil microbial biomass, our study explores the biogeographic distribution of C:N:P stoichiometric ratios in soils and soil microbial biomass in China and seeks to identify areas with similar ratios. Our study also attempts to determine the impacts of soil and soil microbial biomass C:N:P in China and the factors determining the ratio. The element concentrations may vary in each phylogenetic group of soils and soil microbial communities in China’s terrestrial ecosystems, as they do in global terrestrial ecosystems. However, on average, the C:N:P ratios for soil (66:5:1) and soil microbial biomass (22:2:1) are highly constrained within China. Soil microbial biomass C, N, and P concentrations have relatively weak internal stability, while soil microbial biomass C:N, C:P, and N:P ratios do not have internal stability at the national scale and in different terrestrial ecosystems of China. Unlike plant N:P, which can be used as the basis for evaluations of nutrient restrictions, the use of soil or soil microbial biomass N:P to evaluate soil nutrients is not universal. Latitude is the main factor influencing the patterns of soil C, N, and P. Longitude is the main factor determining the patterns of soil microbial biomass C, N, and P. pH is the main nonzonal factor affecting the patterns of soil and soil microbial biomass C, N, and P. The findings of this study are helpful in understanding the spatial pattern of soils and soil microbial biomass and their influencing factors in regions with complex ecosystems.
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Xiao X, Chen J, Liao X, Liu J, Wang D, Li J, Yan Q. Ecological stoichiometry of
Cinnamomum migao
leaf litter and soil nutrients under nitrogen deposition in a karst region. Ecosphere 2021. [DOI: 10.1002/ecs2.3738] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Affiliation(s)
- Xuefeng Xiao
- Forestry College Research Center of Forest Ecology Guizhou University Guiyang 550025 China
| | - Jingzhong Chen
- Forestry College Research Center of Forest Ecology Guizhou University Guiyang 550025 China
| | - Xiaofeng Liao
- Institute of Mountain Resources Guizhou Academy of Science Guiyang 550001 China
| | - Jiming Liu
- Forestry College Research Center of Forest Ecology Guizhou University Guiyang 550025 China
| | - Deng Wang
- Forestry College Research Center of Forest Ecology Guizhou University Guiyang 550025 China
| | - Jia Li
- Forestry College Research Center of Forest Ecology Guizhou University Guiyang 550025 China
| | - Qiuxiao Yan
- Forestry College Research Center of Forest Ecology Guizhou University Guiyang 550025 China
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38
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Butler OM, Lewis T, Maunsell SC, Rezaei Rashti M, Elser JJ, Mackey B, Chen C. The stoichiometric signature of high‐frequency fire in forest floor food webs. ECOL MONOGR 2021. [DOI: 10.1002/ecm.1477] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Orpheus M. Butler
- Australian Rivers Institute and Griffith School of Environment and Science Griffith University Nathan Queensland Australia
- School of Life and Environmental Sciences The University of Sydney Sydney New South Wales Australia
| | - Tom Lewis
- Department of Agriculture and Fisheries Agri‐Science Queensland University of the Sunshine Coast Maroochydore DC Queensland Australia
| | - Sarah C. Maunsell
- Department of Organismic and Evolutionary Biology Harvard University Boston Massachusetts USA
| | - Mehran Rezaei Rashti
- Australian Rivers Institute and Griffith School of Environment and Science Griffith University Nathan Queensland Australia
| | - James J. Elser
- Flathead Lake Biological Station University of Montana Polson Montana USA
| | - Brendan Mackey
- Griffith Climate Change Response Program Griffith University Gold Coast City Queensland Australia
| | - Chengrong Chen
- Australian Rivers Institute and Griffith School of Environment and Science Griffith University Nathan Queensland Australia
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39
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Ouyang MY, Feng XS, Li XX, Wen B, Liu JH, Huang JN, Gao JZ, Chen ZZ. Microplastics intake and excretion: Resilience of the intestinal microbiota but residual growth inhibition in common carp. CHEMOSPHERE 2021; 276:130144. [PMID: 33690034 DOI: 10.1016/j.chemosphere.2021.130144] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/11/2020] [Revised: 02/07/2021] [Accepted: 02/26/2021] [Indexed: 06/12/2023]
Abstract
Aquatic animals can be influenced by exposure to microplastics (MPs), but little is known about their recovery capacity following MPs excretion. Here, common carp were exposed to environmentally relevant concentrations of MPs for 30 days and followed by MPs excretion for another 30 days. Growth, isotopic and elemental compositions and intestinal microbiota were investigated. We found that fish growth was not influenced by exposed to MPs but was significantly reduced following MPs excretion, indicating a delayed effect on growth. MPs intake and excretion, however, had no obvious effects on isotopic and elemental compositions. MPs altered the community structure and composition of intestinal microbiota and might reduce functional diversity. After MPs excretion, interestingly, bacterial community structures of MPs treatments were grouped together with the control, suggesting the general resilience of fish intestinal microbiota. Nevertheless, high abundance of pathogenic Shewanella, Plesiomonas and Flavobacterium was observed in MPs treatments but did not affect the functional potential of intestinal microbiota. The results of this study provide new information for the application of adverse outcome pathway (AOP) in MPs, suggesting the necessity of paying attention to recovery assay following MPs intake in the development of AOP frameworks.
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Affiliation(s)
- Ming-Yan Ouyang
- National Demonstration Center for Experimental Fisheries Science Education, Shanghai Ocean University, Shanghai, 201306, China; Key Laboratory of Freshwater Aquatic Genetic Resources, Ministry of Agriculture and Rural Affairs, Shanghai Ocean University, Shanghai, 201306, China; Shanghai Collaborative Innovation for Aquatic Animal Genetics and Breeding, Shanghai Ocean University, Shanghai, 201306, China; Shanghai Engineering Research Center of Aquaculture, Shanghai Ocean University, Shanghai, 201306, China
| | - Xiao-Sa Feng
- National Demonstration Center for Experimental Fisheries Science Education, Shanghai Ocean University, Shanghai, 201306, China; Key Laboratory of Freshwater Aquatic Genetic Resources, Ministry of Agriculture and Rural Affairs, Shanghai Ocean University, Shanghai, 201306, China; Shanghai Collaborative Innovation for Aquatic Animal Genetics and Breeding, Shanghai Ocean University, Shanghai, 201306, China; Shanghai Engineering Research Center of Aquaculture, Shanghai Ocean University, Shanghai, 201306, China
| | - Xin-Xin Li
- National Demonstration Center for Experimental Fisheries Science Education, Shanghai Ocean University, Shanghai, 201306, China; Key Laboratory of Freshwater Aquatic Genetic Resources, Ministry of Agriculture and Rural Affairs, Shanghai Ocean University, Shanghai, 201306, China; Shanghai Collaborative Innovation for Aquatic Animal Genetics and Breeding, Shanghai Ocean University, Shanghai, 201306, China; Shanghai Engineering Research Center of Aquaculture, Shanghai Ocean University, Shanghai, 201306, China
| | - Bin Wen
- National Demonstration Center for Experimental Fisheries Science Education, Shanghai Ocean University, Shanghai, 201306, China; Key Laboratory of Freshwater Aquatic Genetic Resources, Ministry of Agriculture and Rural Affairs, Shanghai Ocean University, Shanghai, 201306, China; Shanghai Collaborative Innovation for Aquatic Animal Genetics and Breeding, Shanghai Ocean University, Shanghai, 201306, China; Shanghai Engineering Research Center of Aquaculture, Shanghai Ocean University, Shanghai, 201306, China.
| | - Jun-Heng Liu
- National Demonstration Center for Experimental Fisheries Science Education, Shanghai Ocean University, Shanghai, 201306, China; Key Laboratory of Freshwater Aquatic Genetic Resources, Ministry of Agriculture and Rural Affairs, Shanghai Ocean University, Shanghai, 201306, China; Shanghai Collaborative Innovation for Aquatic Animal Genetics and Breeding, Shanghai Ocean University, Shanghai, 201306, China; Shanghai Engineering Research Center of Aquaculture, Shanghai Ocean University, Shanghai, 201306, China
| | - Jun-Nan Huang
- National Demonstration Center for Experimental Fisheries Science Education, Shanghai Ocean University, Shanghai, 201306, China; Key Laboratory of Freshwater Aquatic Genetic Resources, Ministry of Agriculture and Rural Affairs, Shanghai Ocean University, Shanghai, 201306, China; Shanghai Collaborative Innovation for Aquatic Animal Genetics and Breeding, Shanghai Ocean University, Shanghai, 201306, China; Shanghai Engineering Research Center of Aquaculture, Shanghai Ocean University, Shanghai, 201306, China
| | - Jian-Zhong Gao
- National Demonstration Center for Experimental Fisheries Science Education, Shanghai Ocean University, Shanghai, 201306, China; Key Laboratory of Freshwater Aquatic Genetic Resources, Ministry of Agriculture and Rural Affairs, Shanghai Ocean University, Shanghai, 201306, China; Shanghai Collaborative Innovation for Aquatic Animal Genetics and Breeding, Shanghai Ocean University, Shanghai, 201306, China; Shanghai Engineering Research Center of Aquaculture, Shanghai Ocean University, Shanghai, 201306, China
| | - Zai-Zhong Chen
- National Demonstration Center for Experimental Fisheries Science Education, Shanghai Ocean University, Shanghai, 201306, China; Key Laboratory of Freshwater Aquatic Genetic Resources, Ministry of Agriculture and Rural Affairs, Shanghai Ocean University, Shanghai, 201306, China; Shanghai Collaborative Innovation for Aquatic Animal Genetics and Breeding, Shanghai Ocean University, Shanghai, 201306, China; Shanghai Engineering Research Center of Aquaculture, Shanghai Ocean University, Shanghai, 201306, China.
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Zhang Q, Luo D, Yang L, Xie J, Yang Z, Zhou J, Li X, Xiong D, Chen Y, Yang Y. Variations in Rainfall Affect the Responses of Foliar Chemical Properties of Cunninghamia lanceolata Seedlings to Soil Warming. FRONTIERS IN PLANT SCIENCE 2021; 12:705861. [PMID: 34394162 PMCID: PMC8363246 DOI: 10.3389/fpls.2021.705861] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/06/2021] [Accepted: 07/01/2021] [Indexed: 06/13/2023]
Abstract
Climate warming is becoming an increasingly serious threat. Understanding plant stoichiometry changes under climate warming is crucial for predicting the effects of future warming on terrestrial ecosystem productivity. Nevertheless, how plant stoichiometry responds to warming when interannual rainfall variation is considered, remains poorly understood. We performed a field soil warming experiment (+5°C) using buried heating cables in subtropical areas of China from 2015 to 2018. Stoichiometric patterns of foliar C:N:P:K:Ca:Mg, non-structural carbohydrate, and stable isotope of Cunninghamia lanceolata seedlings were studied. Our results showed that soil warming decreased foliar P and K concentrations, C:Ca, P:Ca, and P:Mg ratios. However, soil warming increased foliar Ca concentration, δ15N value, C:P and N:P ratios. The response ratios of foliar N, C:N, and δ15N to soil warming were correlated with rainfall. Our findings indicate that there was non-homeostasis of N and C:N under warming conditions. Three possible reasons for this result are considered and include interannual variations in rainfall, increased loss of N, and N limitation in leaves. Piecewise structural equation models showed that stoichiometric non-homeostasis indirectly affected the growth of C. lanceolata seedlings in response to soil warming. Consequently, the growth of C. lanceolata seedlings remained unchanged under the warming treatment. Taken together, our results advance the understanding of how altered foliar stoichiometry relates to changes in plant growth in response to climate warming. Our results emphasize the importance of rainfall variations for modulating the responses of plant chemical properties to warming. This study provides a useful method for predicting the effects of climate warming on economically important timber species.
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Affiliation(s)
- Qiufang Zhang
- College of Geographical Science, Fujian Normal University, Fuzhou, China
- State Key Laboratory of Subtropical Mountain Ecology (Funded by Ministry of Science and Technology and Fujian Province), Fujian Normal University, Fuzhou, China
- College of Urban and Environmental Sciences, Peking University, Beijing, China
| | - Dawei Luo
- Department of Renewable Resources, Faculty of Agricultural, Life and Environmental Sciences, University of Alberta, Edmonton, AB, Canada
| | - Liuming Yang
- College of Geographical Science, Fujian Normal University, Fuzhou, China
- State Key Laboratory of Subtropical Mountain Ecology (Funded by Ministry of Science and Technology and Fujian Province), Fujian Normal University, Fuzhou, China
| | - Jinsheng Xie
- College of Geographical Science, Fujian Normal University, Fuzhou, China
- State Key Laboratory of Subtropical Mountain Ecology (Funded by Ministry of Science and Technology and Fujian Province), Fujian Normal University, Fuzhou, China
| | - Zhijie Yang
- College of Geographical Science, Fujian Normal University, Fuzhou, China
- State Key Laboratory of Subtropical Mountain Ecology (Funded by Ministry of Science and Technology and Fujian Province), Fujian Normal University, Fuzhou, China
| | - Jiacong Zhou
- College of Geographical Science, Fujian Normal University, Fuzhou, China
- State Key Laboratory of Subtropical Mountain Ecology (Funded by Ministry of Science and Technology and Fujian Province), Fujian Normal University, Fuzhou, China
| | - Xiaojie Li
- College of Geographical Science, Fujian Normal University, Fuzhou, China
- State Key Laboratory of Subtropical Mountain Ecology (Funded by Ministry of Science and Technology and Fujian Province), Fujian Normal University, Fuzhou, China
| | - Decheng Xiong
- College of Geographical Science, Fujian Normal University, Fuzhou, China
- State Key Laboratory of Subtropical Mountain Ecology (Funded by Ministry of Science and Technology and Fujian Province), Fujian Normal University, Fuzhou, China
| | - Yuehmin Chen
- College of Geographical Science, Fujian Normal University, Fuzhou, China
- State Key Laboratory of Subtropical Mountain Ecology (Funded by Ministry of Science and Technology and Fujian Province), Fujian Normal University, Fuzhou, China
| | - Yusheng Yang
- College of Geographical Science, Fujian Normal University, Fuzhou, China
- State Key Laboratory of Subtropical Mountain Ecology (Funded by Ministry of Science and Technology and Fujian Province), Fujian Normal University, Fuzhou, China
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41
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Demi LM, Taylor BW, Reading BJ, Tordoff MG, Dunn RR. Understanding the evolution of nutritive taste in animals: Insights from biological stoichiometry and nutritional geometry. Ecol Evol 2021; 11:8441-8455. [PMID: 34257909 PMCID: PMC8258225 DOI: 10.1002/ece3.7745] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2021] [Revised: 05/04/2021] [Accepted: 05/11/2021] [Indexed: 12/21/2022] Open
Abstract
A major conceptual gap in taste biology is the lack of a general framework for understanding the evolution of different taste modalities among animal species. We turn to two complementary nutritional frameworks, biological stoichiometry theory and nutritional geometry, to develop hypotheses for the evolution of different taste modalities in animals. We describe how the attractive tastes of Na-, Ca-, P-, N-, and C-containing compounds are consistent with principles of both frameworks based on their shared focus on nutritional imbalances and consumer homeostasis. Specifically, we suggest that the evolution of multiple nutritive taste modalities can be predicted by identifying individual elements that are typically more concentrated in the tissues of animals than plants. Additionally, we discuss how consumer homeostasis can inform our understanding of why some taste compounds (i.e., Na, Ca, and P salts) can be either attractive or aversive depending on concentration. We also discuss how these complementary frameworks can help to explain the evolutionary history of different taste modalities and improve our understanding of the mechanisms that lead to loss of taste capabilities in some animal lineages. The ideas presented here will stimulate research that bridges the fields of evolutionary biology, sensory biology, and ecology.
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Affiliation(s)
- Lee M. Demi
- Department of Applied EcologyNorth Carolina State UniversityRaleighNCUSA
| | - Brad W. Taylor
- Department of Applied EcologyNorth Carolina State UniversityRaleighNCUSA
| | | | | | - Robert R. Dunn
- Department of Applied EcologyNorth Carolina State UniversityRaleighNCUSA
- Center for Evolutionary HologenomicsUniversity of CopenhagenCopenhagenDenmark
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42
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Canning AD, Joy MK, Death RG. Nutrient criteria to achieve New Zealand's riverine macroinvertebrate targets. PeerJ 2021; 9:e11556. [PMID: 34131528 PMCID: PMC8174153 DOI: 10.7717/peerj.11556] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2021] [Accepted: 05/12/2021] [Indexed: 11/20/2022] Open
Abstract
Waterways worldwide are experiencing nutrient enrichment from population growth and intensive agriculture, and New Zealand is part of this global trend. Increasing fertilizer in New Zealand and intensive agriculture have driven substantial water quality declines over recent decades. A recent national directive has set environmental managers a range of riverine ecological targets, including three macroinvertebrate indicators, and requires nutrient criteria be set to support their achievement. To support these national aspirations, we use the minimization-of-mismatch analysis to derive potential nutrient criteria. Given that nutrient and macroinvertebrate monitoring often does not occur at the same sites, we compared nutrient criteria derived at sites where macroinvertebrates and nutrients are monitored concurrently with nutrient criteria derived at all macroinvertebrate monitoring sites and using modelled nutrients. To support all three macroinvertebrate targets, we suggest that suitable nutrient criteria would set median dissolved inorganic nitrogen concentrations at ~0.6 mg/L and median dissolved reactive phosphorus concentrations at ~0.02 mg/L. We recognize that deriving site-specific nutrient criteria requires the balancing of multiple values and consideration of multiple targets, and anticipate that criteria derived here will help and support these environmental goals.
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Affiliation(s)
- Adam D Canning
- Centre for Tropical Water and Aquatic Ecosystem Research, James Cook University, Townsville, Queensland, Australia
| | - Michael K Joy
- School of Government, Victoria University of Wellington, Wellington, New Zealand
| | - Russell G Death
- School of Agriculture and Environment, Massey University, Palmerston North, New Zealand
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Wang K, Zhang R, Song L, Yan T, Na E. Comparison of C:N:P Stoichiometry in the Plant-Litter-Soil System Between Poplar and Elm Plantations in the Horqin Sandy Land, China. FRONTIERS IN PLANT SCIENCE 2021; 12:655517. [PMID: 33981324 PMCID: PMC8107480 DOI: 10.3389/fpls.2021.655517] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/19/2021] [Accepted: 04/06/2021] [Indexed: 06/12/2023]
Abstract
Afforestation is among the most effective means of preventing and controlling desertification. Silver poplar (Populus alba) is commonly planted tree species for afforestation of the Horqin Sandy Land of China. However, this species has exhibited some drawbacks such as top shoot dieback, premature senescence and mortality, and soil and ecosystems degradation. In contrast, Siberian elm (Ulmus pumila) rarely experiences these problems in the same regions. Ecological stoichiometry plays a vital role in exploring ecological processes and nutrient cycle relationships in plant-litter-soil systems. To explore the differences in the carbon (C), nitrogen (N), and phosphorus (P) balance, the stoichiometry characteristics and stoichiometric homeostasis in elm and poplar plantations in the Horqin Sandy Land, we measured C, N, and P concentrations in leaves, branches, roots, litter, and soils and analyzed N and P resorption efficiencies in the two plantations. The results showed that soil C and N concentrations, C:P, and N:P were greater in the elm plantation than in the poplar plantation. The leaf and root C:P and N:P during summer and litter N and P concentrations were greater, whereas N and P resorption efficiencies were lower, in the elm plantation than in the poplar plantation. Generally, elm exhibited greater N:P homeostasis than poplar. N and N:P homeostasis were greater in roots than in leaves and branches in the elm plantation, but they varied with soil N concentration and N:P in the poplar plantation. These findings indicate that poplar exhibited more developed internal nutrient conservation and allocation strategies but poor nutrient accumulation in soil, which may contribute to degradation of poplar plantation. In contrast, elm tended to return more nutrients to the soil, showing an improved nutrient cycle in the plant-litter-soil system and increased soil C and N accumulation in the elm plantation. Therefore, compared with poplar, elm may be a more suitable afforestation tree species for the Horqin Sandy Land, in terms of promoting the accumulation of soil nutrients and enhancing nutrient cycling in the plant-litter-soil system.
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Affiliation(s)
- Kai Wang
- College of Environmental Sciences and Engineering, Liaoning Technical University, Fuxin, China
| | - Risheng Zhang
- Liaoning Institute of Sandy Land Control and Utilization, Fuxin, China
| | - Lining Song
- Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang, China
| | - Tao Yan
- College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou, China
| | - Enhang Na
- College of Environmental Sciences and Engineering, Liaoning Technical University, Fuxin, China
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44
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Fernández-Martínez M, Preece C, Corbera J, Cano O, Garcia-Porta J, Sardans J, Janssens IA, Sabater F, Peñuelas J. Bryophyte C:N:P stoichiometry, biogeochemical niches and elementome plasticity driven by environment and coexistence. Ecol Lett 2021; 24:1375-1386. [PMID: 33894025 DOI: 10.1111/ele.13752] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2020] [Revised: 01/22/2021] [Accepted: 03/20/2021] [Indexed: 01/13/2023]
Abstract
Ecological stoichiometry and studies of biogeochemical niches have mainly focused on plankton and vascular plants, but the phenotypically closest modern relatives of early plants, bryophytes, have been largely neglected. We analysed C:N:P stoichiometries and elemental compositions (K, Na, Mg, Ca, S, Fe) of 35 widely distributed bryophyte species inhabiting springs. We estimated bryophyte C:N:P ratios and their biogeochemical niches, investigated how elementomes respond to the environment and determined whether they tend to diverge more for coexisting than non-coexisting individuals and species. The median C:N:P was 145:8:1, intermediate between Redfield's ratio for marine plankton and those for vascular plants. Biogeochemical niches were differentiated amongst species and were phylogenetically conserved. Differences in individual and species-specific elementomes increased with coexistence between species. Our results provide an evolutionary bridge between the ecological stoichiometries of algae and vascular plants and suggest that differences in elementomes could be used to understand community assemblages and functional diversity.
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Affiliation(s)
- Marcos Fernández-Martínez
- Research group PLECO (Plants and Ecosystems), Department of Biology, University of Antwerp, Wilrijk, Belgium.,Delegació de la Serralada Litoral Central, ICHN, Mataró, Catalonia, Spain
| | - Catherine Preece
- Research group PLECO (Plants and Ecosystems), Department of Biology, University of Antwerp, Wilrijk, Belgium.,CREAF, Cerdanyola del Vallès, Barcelona, Catalonia, Spain.,CSIC, Global Ecology Unit, CREAF-CSIC-UAB, Bellaterra, Barcelona, Catalonia, Spain
| | - Jordi Corbera
- Delegació de la Serralada Litoral Central, ICHN, Mataró, Catalonia, Spain
| | - Oriol Cano
- Department of Ecology, University of Barcelona, Barcelona, Catalonia, Spain
| | - Joan Garcia-Porta
- Department of Biology, Washington University in Saint Louis, St. Louis, MO, USA
| | - Jordi Sardans
- CREAF, Cerdanyola del Vallès, Barcelona, Catalonia, Spain.,CSIC, Global Ecology Unit, CREAF-CSIC-UAB, Bellaterra, Barcelona, Catalonia, Spain
| | - Ivan A Janssens
- Research group PLECO (Plants and Ecosystems), Department of Biology, University of Antwerp, Wilrijk, Belgium
| | - Francesc Sabater
- Delegació de la Serralada Litoral Central, ICHN, Mataró, Catalonia, Spain.,Department of Ecology, University of Barcelona, Barcelona, Catalonia, Spain
| | - Josep Peñuelas
- CREAF, Cerdanyola del Vallès, Barcelona, Catalonia, Spain.,CSIC, Global Ecology Unit, CREAF-CSIC-UAB, Bellaterra, Barcelona, Catalonia, Spain
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45
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Frenken T, Paseka R, González AL, Asik L, Seabloom EW, White LA, Borer ET, Strauss AT, Peace A, Van de Waal DB. Changing elemental cycles, stoichiometric mismatches, and consequences for pathogens of primary producers. OIKOS 2021. [DOI: 10.1111/oik.08253] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Thijs Frenken
- Dept of Aquatic Ecology, Netherlands Inst. of Ecology (NIOO‐KNAW) Wageningen the Netherlands
- Great Lakes Inst. for Environmental Research (GLIER), Univ. of Windsor Windsor ON Canada
| | - Rachel Paseka
- Dept of Ecology, Evolution and Behavior, Univ. of Minnesota St. Paul MN USA
| | | | - Lale Asik
- Dept of Biology and Center for Computational and Integrative Biology, Rutgers Univ. Camden NJ USA
| | - Eric W. Seabloom
- Great Lakes Inst. for Environmental Research (GLIER), Univ. of Windsor Windsor ON Canada
| | - Lauren A. White
- National Socio‐Environmental Synthesis Center (SESYNC), Univ. of Maryland Annapolis MD USA
| | - Elizabeth T. Borer
- Great Lakes Inst. for Environmental Research (GLIER), Univ. of Windsor Windsor ON Canada
| | - Alex T. Strauss
- Great Lakes Inst. for Environmental Research (GLIER), Univ. of Windsor Windsor ON Canada
- Dept of Ecology, Evolution and Behavior, Univ. of Minnesota St. Paul MN USA
| | - Angela Peace
- Dept of Mathematics and Statistics, Texas Tech Univ. Lubbock TX USA
| | - Dedmer B. Van de Waal
- Dept of Aquatic Ecology, Netherlands Inst. of Ecology (NIOO‐KNAW) Wageningen the Netherlands
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46
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Beck M, Mondy CP, Danger M, Billoir E, Usseglio‐Polatera P. Extending the growth rate hypothesis to species development: Can stoichiometric traits help to explain the composition of macroinvertebrate communities? OIKOS 2021. [DOI: 10.1111/oik.08090] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Miriam Beck
- Univ. de Lorraine, CNRS, LIEC Metz France
- LTER‐‘Zone Atelier Moselle' Metz France
| | - Cédric P. Mondy
- Office Français de la Biodiversité, Direction Régionale d'Ile‐de‐France Vincennes France
| | - Michael Danger
- Univ. de Lorraine, CNRS, LIEC Metz France
- LTER‐‘Zone Atelier Moselle' Metz France
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47
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Osburn FS, Wagner ND, Scott JT. Biological stoichiometry and growth dynamics of a diazotrophic cyanobacteria in nitrogen sufficient and deficient conditions. HARMFUL ALGAE 2021; 103:102011. [PMID: 33980450 PMCID: PMC8119935 DOI: 10.1016/j.hal.2021.102011] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/31/2020] [Revised: 03/08/2021] [Accepted: 03/11/2021] [Indexed: 06/12/2023]
Abstract
The role of nitrogen (N) fixation in determining the frequency, magnitude, and extent of harmful algal blooms (HABs) has not been well studied. Dolichospermum is a common HAB species that is diazotrophic (capable of N fixation) and thus growth is often considered never to be limited by low combined N sources. However, N fixation is energetically expensive and its cost during bloom formation has not been quantified. Additionally, it is unknown how acclimation to differing nutrient ratios affects growth and cellular carbon (C):N stoichiometry. Here, we test the hypotheses that diazotrophic cyanobacteria are homeostatic for N because of their ability to fix atmospheric N2 and that previous acclimation to low N environments will result in more fixed N and lower C:N stoichiometry. Briefly, cultures that varied in resource N:phosphorus (P) ranging from 0.01 to 100 (atom), were seeded with Dolichospermum which were previously acclimated to low and high N:P conditions and then sampled temporally for growth and C:N stoichiometry. We found that Dolichospermum was not homeostatic for N and displayed classic signs of N limitation and elevated C:N stoichiometry, highlighting the necessary growth trade-off within cells when expending energy to fix N. Acclimation to N limited conditions caused differences in both C:N and fixed N at various time points in the experiment. These results highlight the importance of environmentally available N to a diazotrophic bloom, as well as how previous growth conditions can influence population growth during blooms experiencing variable N:P.
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Affiliation(s)
- Felicia S Osburn
- Department of Biology, Baylor University, One Bear Place 97388, Waco, TX 76798, USA; Center for Reservoir and Aquatic Systems Research, Baylor University, One Bear Place 97178, Waco, TX 76798, USA.
| | - Nicole D Wagner
- Center for Reservoir and Aquatic Systems Research, Baylor University, One Bear Place 97178, Waco, TX 76798, USA
| | - J Thad Scott
- Department of Biology, Baylor University, One Bear Place 97388, Waco, TX 76798, USA; Center for Reservoir and Aquatic Systems Research, Baylor University, One Bear Place 97178, Waco, TX 76798, USA
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48
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Du B, Yuan J, Ji H, Yin S, Kang H, Liu C. Body Size Plasticity of Weevil Larvae (Curculio davidi) (Coleoptera: Curculionidae) and Its Stoichiometric Relationship With Different Hosts. JOURNAL OF INSECT SCIENCE (ONLINE) 2021; 21:2. [PMID: 33394047 PMCID: PMC7780276 DOI: 10.1093/jisesa/ieaa139] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/01/2020] [Indexed: 04/29/2023]
Abstract
Parasites obtain energy and nutrients from the host, and their body size is also usually limited by host size. However, the regulatory mechanisms that control the plasticity of parasite body sizes and the stoichiometric relationships with their hosts remain unclear. Here we investigated the concentrations of 14 elements (C, H, O, N, P, S, K, Na, Ca, Mg, Al, Fe, Mn, and Zn) in the acorns of three oak species (Quercus spp.), in their endoparasitic weevil (Curculio davidi Fairmaire) (Coleoptera: Curculionidae) larvae and in the larval feces, and the weight of weevil larvae within different hosts in a warm-temperate zone of China. Our results showed that the three acorn species exhibited significant differences in C, H, O, P, K, Mg, and Mn concentrations. However, in the weevil larvae, only P, Mn, and C:P ratio revealed significant differences. Weevil larvae preferentially absorbed and retained N, Zn, Na, and P, whereas Mn, K, Ca, and O were passively absorbed and transported. The weevil larvae weight was associated with acorn stoichiometry, and positively correlated with acorn size. Weevil larvae P decreased, but Mn and C:P increased with their weight, implying highly variable in somatic stoichiometry are coupled with the plasticity of body size. Interestingly, weevil larvae weight was negatively correlated with acorn infection rate, indicating small-size parasitic insects might have higher fitness level in parasite-host systems than larger-size ones. Our results suggest that variation in P, Mn, and C:P in parasites may play critical roles in shaping their body size and in improving their fitness.
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Affiliation(s)
- Baoming Du
- School of Agriculture and Biology, Shanghai Jiao Tong University, Minhang, Shanghai, China
- Shanghai Urban Forest Ecosystem Research Station, State Forestry Administration, Minhang, Shanghai, China
| | - Jun Yuan
- School of Agriculture and Biology, Shanghai Jiao Tong University, Minhang, Shanghai, China
| | - Huawei Ji
- School of Agriculture and Biology, Shanghai Jiao Tong University, Minhang, Shanghai, China
- Shanghai Urban Forest Ecosystem Research Station, State Forestry Administration, Minhang, Shanghai, China
| | - Shan Yin
- School of Agriculture and Biology, Shanghai Jiao Tong University, Minhang, Shanghai, China
- Shanghai Urban Forest Ecosystem Research Station, State Forestry Administration, Minhang, Shanghai, China
- Key Laboratory of Urban Agriculture (South), Ministry of Agriculture, Minhang, Shanghai, China
| | - Hongzhang Kang
- School of Agriculture and Biology, Shanghai Jiao Tong University, Minhang, Shanghai, China
- Shanghai Urban Forest Ecosystem Research Station, State Forestry Administration, Minhang, Shanghai, China
- Key Laboratory of Urban Agriculture (South), Ministry of Agriculture, Minhang, Shanghai, China
| | - Chunjiang Liu
- School of Agriculture and Biology, Shanghai Jiao Tong University, Minhang, Shanghai, China
- Shanghai Urban Forest Ecosystem Research Station, State Forestry Administration, Minhang, Shanghai, China
- Key Laboratory of Urban Agriculture (South), Ministry of Agriculture, Minhang, Shanghai, China
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49
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Divergent Adaptation Strategies of Vascular Facultative Epiphytes to Bark and Soil Habitats: Insights from Stoichiometry. FORESTS 2020. [DOI: 10.3390/f12010016] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Understanding the stoichiometric traits of plants is critical for studying their ecological adaptation strategies. Facultative epiphytes (which can also live on the ground) are an important component of epiphytic flora of montane forest ecosystems. However, a key gap persists in our understanding how facultative epiphytes can adapt different nutritional conditions of ground and canopy habitats? To study adaptive strategies of facultative epiphytes and the characteristics of the content and stoichiometric homeostasis of C, N, and P elements, we conducted a field experiment and a greenhouse N and P additions cultivation experiment. We found that epiphytic individuals of facultative epiphytes showed lower C:N and C:P ratios, higher variation in elemental composition, and more pronounced N limitation than terrestrial individuals. Moreover, facultative epiphytes showed strong control over the elemental composition of leaves, and their stoichiometric homeostasis of leaves and stems were stronger than roots. Furthermore, the homeostasis of facultative epiphytes decreased in the order N > P. Our results indicated that epiphytic and terrestrial individuals of facultative epiphytes have difference in nutrient limitation, and they use plastic strategies in different habitats. Epiphytic individuals survive in the intermittent habitat through luxury consumption of nutrient while terrestrial individuals were relatively conservative nutrient users. Furthermore, our results implied that facultative epiphytes maintain stable metabolic leaf activity via variable element concentrations of roots to adapt to highly heterogeneous forest habitats.
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50
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van der Lee GH, Vonk JA, Verdonschot RCM, Kraak MHS, Verdonschot PFM, Huisman J. Eutrophication induces shifts in the trophic position of invertebrates in aquatic food webs. Ecology 2020; 102:e03275. [PMID: 33351184 PMCID: PMC7988625 DOI: 10.1002/ecy.3275] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/11/2020] [Revised: 09/11/2020] [Accepted: 10/26/2020] [Indexed: 11/13/2022]
Abstract
Changes in the ecological stoichiometry of primary producers may have considerable implications for energy and matter transfer in food webs. We hypothesized that nutrient enrichment shifts the trophic position of omnivores towards herbivory, as the nutritional quality of primary producers increases. This hypothesis was tested by analyzing the ecological stoichiometry and stable isotope signature of primary producers and a wide range of aquatic macroinvertebrates, including primary consumers (herbivores) and secondary consumers (both potential omnivores and strict carnivores), along a eutrophication gradient in an agricultural landscape. Our results showed (1) that carbon : nutrient ratios of primary producers decreased along the eutrophication gradient, while the elemental composition of consumers remained homeostatic, and (2) that the trophic position of several omnivores and the generalist predator Notonecta decreased, while the trophic position of most other consumers remained constant. These findings suggest that shifts in the diets of aquatic invertebrates induced by increasing eutrophication may affect species interactions and food web structure in aquatic ecosystems.
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Affiliation(s)
- Gea H van der Lee
- Department of Freshwater and Marine Ecology, Institute for Biodiversity and Ecosystem Dynamics, University of Amsterdam, P.O. Box 94240, Amsterdam, 1090 GE, The Netherlands.,Wageningen Environmental Research, Wageningen UR, P.O. Box 47, Wageningen, 6700 AA, The Netherlands
| | - J Arie Vonk
- Department of Freshwater and Marine Ecology, Institute for Biodiversity and Ecosystem Dynamics, University of Amsterdam, P.O. Box 94240, Amsterdam, 1090 GE, The Netherlands
| | - Ralf C M Verdonschot
- Wageningen Environmental Research, Wageningen UR, P.O. Box 47, Wageningen, 6700 AA, The Netherlands
| | - Michiel H S Kraak
- Department of Freshwater and Marine Ecology, Institute for Biodiversity and Ecosystem Dynamics, University of Amsterdam, P.O. Box 94240, Amsterdam, 1090 GE, The Netherlands
| | - Piet F M Verdonschot
- Department of Freshwater and Marine Ecology, Institute for Biodiversity and Ecosystem Dynamics, University of Amsterdam, P.O. Box 94240, Amsterdam, 1090 GE, The Netherlands.,Wageningen Environmental Research, Wageningen UR, P.O. Box 47, Wageningen, 6700 AA, The Netherlands
| | - Jef Huisman
- Department of Freshwater and Marine Ecology, Institute for Biodiversity and Ecosystem Dynamics, University of Amsterdam, P.O. Box 94240, Amsterdam, 1090 GE, The Netherlands
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