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Tian K, Chen S, Ye R, Xie Y, Yao L, Lin H. Initial microbiome and tree root status structured the soil microbial community discrepancy of the subtropical pine-oak forest in a large urban forest park. Front Microbiol 2024; 15:1391863. [PMID: 38881652 PMCID: PMC11176443 DOI: 10.3389/fmicb.2024.1391863] [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: 02/26/2024] [Accepted: 05/06/2024] [Indexed: 06/18/2024] Open
Abstract
Plant-microbe-soil interactions control over the forest biogeochemical cycling. Adaptive plant-soil interactions can shape specific microbial taxa in determining the ecosystem functioning. Different trees produce heterogeneous soil properties and can alter the composition of soil microbial community, which is relevant to the forest internal succession containing contrasting stand types such as the pine-oak forests. Considering representative microbial community characteristics are recorded in the original soil where they had adapted and resided, we constructed a soil transplant incubation experiment in a series of in situ root-ingrowth cores in a subtropical pine-oak forest, to simulate the vegetational pine-oak replacement under environmental succession. The responsive bacterial and fungal community discrepancies were studied to determine whether and how they would be changed. The pine and oak forest stands had greater heterogeneity in fungi composition than bacteria. Original soil and specific tree root status were the main factors that determined microbial community structure. Internal association network characters and intergroup variations of fungi among soil samples were more affected by original soil, while bacteria were more affected by receiving forest. Specifically, dominant tree roots had strong influence in accelerating the fungi community succession to adapt with the surrounding forest. We concluded that soil microbial responses to forest stand alternation differed between microbiome groups, with fungi from their original forest possessing higher resistance to encounter a new vegetation stand, while the bacteria community have faster resilience. The data would advance our insight into local soil microbial community dynamics during ecosystem succession and be helpful to enlighten forest management.
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Affiliation(s)
- Kai Tian
- Henan Field Observation and Research Station of Headwork Wetland Ecosystem of the Central Route of South-to-North Water Diversion Project, School of Life Sciences and Agricultural Engineering, Nanyang Normal University, Nanyang, China
| | - Shaoming Chen
- Henan Field Observation and Research Station of Headwork Wetland Ecosystem of the Central Route of South-to-North Water Diversion Project, School of Life Sciences and Agricultural Engineering, Nanyang Normal University, Nanyang, China
| | - Rumeng Ye
- Henan Field Observation and Research Station of Headwork Wetland Ecosystem of the Central Route of South-to-North Water Diversion Project, School of Life Sciences and Agricultural Engineering, Nanyang Normal University, Nanyang, China
| | - Yanghe Xie
- School of Life Sciences, Anhui Agricultural University, Hefei, China
| | - Lunguang Yao
- Henan Field Observation and Research Station of Headwork Wetland Ecosystem of the Central Route of South-to-North Water Diversion Project, School of Life Sciences and Agricultural Engineering, Nanyang Normal University, Nanyang, China
| | - Hong Lin
- School of Food Science, Institute of Applied Ecology, Nanjing Xiaozhuang University, Nanjing, China
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2
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Pramanick B, Kumar M, Naik BM, Singh SK, Kumar M, Singh SV. Soil carbon-nutrient cycling, energetics, and carbon footprint in calcareous soils with adoption of long-term conservation tillage practices and cropping systems diversification. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 912:169421. [PMID: 38128664 DOI: 10.1016/j.scitotenv.2023.169421] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/09/2023] [Revised: 12/01/2023] [Accepted: 12/14/2023] [Indexed: 12/23/2023]
Abstract
Calcareous soils, comprising vast areas in northern and eastern parts of India, are characterized by low soil organic carbon (SOC) with high free CaCO3 that results in low nutrient bioavailability with poor soil structure. Improvement of this soil can be achieved with conservation tillage with residue retention coupled with diversification of cropping system including legumes, and oilseeds in the system. Concerning all these, a long-term experiment was carried out in the calcareous soils having low organic carbon and high free CaCO3 (∼33 %) with varied tillage practices, viz. permanent bed with residue (PB), zero tillage with residue (ZT), and conventional tillage without residue (CT); and cropping systems viz. maize-wheat-greengram (MWGg), rice-maize (RM), and maize-mustard-greengram (MMuGg) during 2015-2021. From this study, it was observed that PB and ZT resulted in ∼25-30 % increment in SOC compared to the initial SOC, while CT showed a 4 % decrease in the SOC. Conservation tillage practices also resulted in better soil aggregation and favourable bulk density of the soil. Furthermore, PB and ZT practice exhibited 10-13 %; 15-18 %; 11-15 %; 40-60 %, 20-36 %, and 23-45 % increments in the soil available N, P, K, soil microbial biomass carbon, dehydrogenase activity, and urease activity, respectively over those under CT. Crop diversification with the inclusion of legume and oilseed crops (MMuGg, and MWGg) over cereal-dominated RM systems resulted in better soil health. Maize equivalent yield and energy use efficiency (%) were also found to be the maximum under PB, and ZT, in combination with the MMuGg system. ZT and PB also reduced the carbon footprint by 465 and 822 %, respectively over CT by elevating SOC sequestration. Hence, conservation tillage practices with residue retention coupled with diversification in maize-based cropping systems with mustard and greengram can improve soil health, system productivity, and energetics, and reduce the carbon footprint in calcareous soils.
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Affiliation(s)
- Biswajit Pramanick
- Department of Agronomy, Dr. Rajendra Prasad Central Agricultural University, Pusa 848125, Bihar, India.
| | - Mritunjay Kumar
- Department of Agronomy, Dr. Rajendra Prasad Central Agricultural University, Pusa 848125, Bihar, India
| | - Banavath Mahesh Naik
- Department of Agronomy, Dr. Rajendra Prasad Central Agricultural University, Pusa 848125, Bihar, India
| | - Santosh Kumar Singh
- Department of Soil Science, Dr. Rajendra Prasad Central Agricultural University, Pusa 848125, Bihar, India
| | - Mukesh Kumar
- Department of Agronomy, Dr. Rajendra Prasad Central Agricultural University, Pusa 848125, Bihar, India
| | - Shiv Vendra Singh
- Department of Agronomy, Rani Lakshmi Bai Central Agricultural University, Jhansi 284003, Uttar Pradesh, India.
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3
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Li P, Jia L, Chen Q, Zhang H, Deng J, Lu J, Xu L, Li H, Hu F, Jiao J. Adaptive evaluation for agricultural sustainability of different fertilizer management options for a green manure-maize rotation system: Impacts on crop yield, soil biochemical properties and organic carbon fractions. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 908:168170. [PMID: 37924887 DOI: 10.1016/j.scitotenv.2023.168170] [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: 08/03/2023] [Revised: 10/07/2023] [Accepted: 10/26/2023] [Indexed: 11/06/2023]
Abstract
Green manure planting can reduce the intensity of soil use, while improving farmland productivity in double-cropping systems. However, only few studies have focused on the impacts of green manure application under different fertilization management options on succeeding crop yield and soil organic carbon (SOC) process. A three-year field experiment was conducted with a winter smooth vetch-summer maize cropping system to evaluate the effects of green manure with different chemical fertilizers on soil physiochemical properties, SOC fraction, enzyme activities and maize yield. Total eight treatments were compared including different combinations of green manure and chemical fertilizers (i.e., nitrogen and phosphorus fertilizers) in the smooth vetch phase and maize phase. The results showed that compared to the control, green manure incorporation increased the soil moisture, total nitrogen, total phosphorus, basal respiration, SOC and its labile fractions, and enzyme activities, especially for the treatments of green manure with fertilization. However, the soil pH and bulk density decreased due to green manure application. Maize yield increased 34 %-53 % after green manure application, and was found to be significantly and positively correlated with soil carbon process (P < 0.05). Moreover, SOC and its labile fractions, and total nitrogen were observed as the main drivers of the maize yield. Variation partition analysis demonstrated that soil biochemical properties and their interaction with green manure by fertilization caused variations in SOC fractions. Further, structural equation models indicated that both balanced fertilization practices had positive effects on maize yield and soil carbon process via changes in SOC fractions and C cycling-related enzyme activities, respectively. In addition, the amount balance of chemical fertilizer positively impacted the soil carbon process by regulating SOC fractions through enzyme activities. These findings provide important guidance for applying optimal fertilization management in the green manure phase to improve succeeding crop yield and soil quality as well as to mitigate the adverse impacts of chemical fertilizers. The study will be equally illuminating for other green manure-crop rotation systems.
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Affiliation(s)
- Peng Li
- Sanya Institute of Nanjing Agricultural University, Sanya 572000, China; College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210014, China; Key Laboratory of Vector Biology and Pathogen Control of Zhejiang Province, College of Life Sciences, Huzhou University, Huzhou 313000, China
| | - Long Jia
- Sanya Institute of Nanjing Agricultural University, Sanya 572000, China; College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210014, China
| | - Qianqian Chen
- Sanya Institute of Nanjing Agricultural University, Sanya 572000, China; College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210014, China
| | - Huijuan Zhang
- College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210014, China
| | - Jianjun Deng
- College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210014, China
| | - Jiyu Lu
- College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210014, China
| | - Li Xu
- Sanya Institute of Nanjing Agricultural University, Sanya 572000, China; College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210014, China
| | - Huixin Li
- Sanya Institute of Nanjing Agricultural University, Sanya 572000, China; College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210014, China
| | - Feng Hu
- Sanya Institute of Nanjing Agricultural University, Sanya 572000, China; College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210014, China
| | - Jiaguo Jiao
- Sanya Institute of Nanjing Agricultural University, Sanya 572000, China; College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210014, China.
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4
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Fu Y, Sun H, Luo Y, Zhang W, Cai Z, Li Y, Luan L, Ning Q, Shi Q, Liang Y, Liang C, Tang C, Li Y, Zhang H, Xie Z, Chen L, Xu J, Kuzyakov Y. Deciphering Biotic and Abiotic Mechanisms Underlying Straw Decomposition and Soil Organic Carbon Priming in Agriculture Soils Receiving Long-Term Fertilizers. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2023; 71:20549-20562. [PMID: 38099742 DOI: 10.1021/acs.jafc.3c03209] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/28/2023]
Abstract
Straw-related carbon (C) dynamics are central for C accrual in agro-ecosystems and should be assessed by investigating their decomposition and soil organic carbon (SOC) priming effects. Our understanding of biotic and abiotic mechanisms underpinning these two C processes, however, is still not sufficiently profound. Soils that had received organic and mineral fertilizers for 26 years were sampled for a 28 day incubation experiment to assess 13C-labeled straw decomposition and SOC priming effects. On the basis of analyzing physicochemical properties, fungal taxonomic (MiSeq sequencing) and functional (metagenomics) guilds, we quantified the contributions of biotic and abiotic attributes to straw decomposition and SOC priming. Here, we propose two distinct mechanisms underlying straw decomposition and SOC priming in agriculture soils: (i) accelerated straw mineralization in manure-treated soils was mainly driven by biotic forces, while (ii) larger SOC priming in NPK-amended soils was through abiotic regulation.
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Affiliation(s)
- Yingyi Fu
- Institute of Soil and Water Resources and Environmental Science, Zhejiang Provincial Key Laboratory of Agricultural Resources and Environment, Zhejiang University, Hangzhou, Zhejiang 310058, People's Republic of China
| | - Han Sun
- Institute of Soil and Water Resources and Environmental Science, Zhejiang Provincial Key Laboratory of Agricultural Resources and Environment, Zhejiang University, Hangzhou, Zhejiang 310058, People's Republic of China
| | - Yu Luo
- Institute of Soil and Water Resources and Environmental Science, Zhejiang Provincial Key Laboratory of Agricultural Resources and Environment, Zhejiang University, Hangzhou, Zhejiang 310058, People's Republic of China
| | - Wenjun Zhang
- National Engineering Laboratory for Improving Quality of Arable Land, Institute of Agriculture Resources and Regional Planning, Chinese Academy of Agriculture Sciences, Beijing 100081, People's Republic of China
| | - Zejiang Cai
- National Engineering Laboratory for Improving Quality of Arable Land, Institute of Agriculture Resources and Regional Planning, Chinese Academy of Agriculture Sciences, Beijing 100081, People's Republic of China
| | - Yongchun Li
- Nurturing Station for the State Key Laboratory of Subtropical Silviculture, Zhejiang Agriculture and Forestry University, Lin'an, Zhejiang 311300, People's Republic of China
| | - Lu Luan
- State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, Jiangsu 210008, People's Republic of China
| | - Qi Ning
- State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, Jiangsu 210008, People's Republic of China
| | - Qianer Shi
- Institute of Soil and Water Resources and Environmental Science, Zhejiang Provincial Key Laboratory of Agricultural Resources and Environment, Zhejiang University, Hangzhou, Zhejiang 310058, People's Republic of China
| | - Yuting Liang
- State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, Jiangsu 210008, People's Republic of China
| | - Chao Liang
- Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang, Liaoning 110016, People's Republic of China
| | - Caixian Tang
- Department of Animal, Plant and Soil Sciences, Centre for AgriBioscience, La Trobe University, Melbourne Campus, Bundoora, Victoria 3086, Australia
| | - Yongfu Li
- Nurturing Station for the State Key Laboratory of Subtropical Silviculture, Zhejiang Agriculture and Forestry University, Lin'an, Zhejiang 311300, People's Republic of China
| | - Huimin Zhang
- National Engineering Laboratory for Improving Quality of Arable Land, Institute of Agriculture Resources and Regional Planning, Chinese Academy of Agriculture Sciences, Beijing 100081, People's Republic of China
| | - Zubin Xie
- State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, Jiangsu 210008, People's Republic of China
| | - Lijun Chen
- State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, Jiangsu 210008, People's Republic of China
| | - Jianming Xu
- Institute of Soil and Water Resources and Environmental Science, Zhejiang Provincial Key Laboratory of Agricultural Resources and Environment, Zhejiang University, Hangzhou, Zhejiang 310058, People's Republic of China
| | - Yakov Kuzyakov
- Department of Soil Science of Temperate Ecosystems, Department of Agricultural Soil Science, University of Göttingen, 37077 Göttingen, Germany
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5
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Thapa R, Cabrera M, Schomberg HH, Reberg-Horton C, Poffenbarger H, Mirsky SB. Chemical differences in cover crop residue quality are maintained through litter decay. PLoS One 2023; 18:e0289352. [PMID: 37498919 PMCID: PMC10374002 DOI: 10.1371/journal.pone.0289352] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2022] [Accepted: 07/17/2023] [Indexed: 07/29/2023] Open
Abstract
As plant litter decomposes, its mass exponentially decreases until it reaches a non-zero asymptote. However, decomposition rates vary considerably among litter types as a function of their overall quality (i.e., carbon:nitrogen (C:N) ratio and litter chemistry). We investigated the effects of hairy vetch (HV: Vicia villosa Roth):cereal rye (RYE: Secale cereale L.) biomass proportions with or without broadcasted poultry manure on overall litter quality before and during decomposition. As HV biomass proportions increased from 0 to 100%, the relative susceptibility of HV:RYE mixtures to microbial decomposition increased due to: (i) decrease in the initial C:N ratio (87:1 to 10:1 in 2012 and 67:1 to 9:1 in 2013), (ii) increase in the non-structural labile carbohydrates (33 to 61% across years), and (iii) decrease in the structural holo-cellulose (59 to 33% across years) and lignin (8 to 6% across years) fractions. Broadcasted poultry manure decreased the overall initial quality of HV-dominated litters and increased the overall initial quality of RYE-dominated litters. Across all HV:RYE biomass proportions with or without poultry manure, chemical changes during litter decay were related to proportional mass loss. Therefore, the relative decrease in carbohydrates and the concomitant increase in holo-cellulose and lignin fractions were more pronounced for fast decomposing litter types, i.e., litters dominated by HV rather than RYE. While our results suggest possible convergence of litter C:N ratios, initial differences in litter chemistry neither converged nor diverged. Therefore, we conclude that the initial chemistry of litter before decomposition exerts a strong control on its chemical composition throughout the decay continuum.
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Affiliation(s)
- Resham Thapa
- Department of Agricultural and Environmental Sciences, Tennessee State University, Nashville, Tennessee, United States of America
| | - Miguel Cabrera
- Department of Crop and Soil Sciences, University of Georgia, Athens, Georgia, United States of America
| | - Harry H Schomberg
- USDA-ARS Sustainable Agricultural Systems Laboratory, Beltsville Agricultural Research Center, Beltsville, Maryland, United States of America
| | - Chris Reberg-Horton
- Department of Crop and Soil Sciences, North Carolina State University, Raleigh, North Carolina, United States of America
| | - Hanna Poffenbarger
- Department of Plant and Soil Sciences, University of Kentucky, Lexington, Kentucky, United States of America
| | - Steven B Mirsky
- USDA-ARS Sustainable Agricultural Systems Laboratory, Beltsville Agricultural Research Center, Beltsville, Maryland, United States of America
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6
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Wang X, Liang C, Mao J, Jiang Y, Bian Q, Liang Y, Chen Y, Sun B. Microbial keystone taxa drive succession of plant residue chemistry. THE ISME JOURNAL 2023; 17:748-757. [PMID: 36841902 PMCID: PMC10119086 DOI: 10.1038/s41396-023-01384-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/09/2021] [Revised: 02/09/2023] [Accepted: 02/13/2023] [Indexed: 02/27/2023]
Abstract
Managing above-ground plant carbon inputs can pave the way toward carbon neutrality and mitigating climate change. Chemical complexity of plant residues largely controls carbon sequestration. There exist conflicting opinions on whether residue chemistry diverges or converges after long-term decomposition. Moreover, whether and how microbial communities regulate residue chemistry remains unclear. This study investigated the decomposition processes and residue composition dynamics of maize straw and wheat straw and related microbiomes over a period of 9 years in three climate zones. Residue chemistry exhibited a divergent-convergent trajectory during decomposition, that is, the residue composition diverged during the 0.5-3 year period under the combined effect of straw type and climate and then converged to an array of common compounds during the 3-9 year period. Chemical divergence during the first 2-3 years was primarily driven by the changes in extracellular enzyme activity influenced by keystone taxa-guided bacterial networks, and the keystone taxa belonged to Alphaproteobacteria, particularly Rhizobiales. After 9 years, microbial assimilation became dominant, leading to chemical convergence, and fungi, particularly Chaetomium, were the main contributors to microbial assimilation. Overall, this study demonstrated that keystone taxa regulate the divergent-convergent trajectory in residue chemistry.
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Affiliation(s)
- Xiaoyue Wang
- State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, 210008, China
| | - Chao Liang
- Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang, 110016, China.
| | - Jingdong Mao
- Department of Chemistry and Biochemistry, Old Dominion University, 4541 Hampton Boulevard, Norfolk, VA, 23529, USA
| | - Yuji Jiang
- State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, 210008, China
| | - Qing Bian
- State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, 210008, China
| | - Yuting Liang
- State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, 210008, China
| | - Yan Chen
- State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, 210008, China
| | - Bo Sun
- State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, 210008, China.
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7
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Robbins CJ, Manning DWP, Halvorson HM, Norman BC, Eckert RA, Pastor A, Dodd AK, Jabiol J, Bastias E, Gossiaux A, Mehring AS. Nutrient and stoichiometry dynamics of decomposing litter in stream ecosystems: A global synthesis. Ecology 2023:e4060. [PMID: 37186091 DOI: 10.1002/ecy.4060] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/25/2023] [Accepted: 04/14/2023] [Indexed: 05/17/2023]
Abstract
Decomposing organic matter forms a substantial resource base fueling the biogeochemical function and secondary production of most aquatic ecosystems. However, detrital N (nitrogen) and P (phosphorus) dynamics remain relatively unexplored in aquatic relative to terrestrial ecosystems, despite fundamentally linking microbial processes to ecosystem function across broad spatial scales. We synthesized 217 published time series of detrital carbon (C), N, P, and their stoichiometric ratios (C:N, C:P, N:P) from stream ecosystems to analyze the temporal nutrient dynamics of decomposing litter using generalized additive models. Model results indicated that detritus was a net source of N (irrespective of inorganic or organic form) to the environment regardless of initial N content. In contrast, P sink/source dynamics were more strongly influenced by initial P content, where P-poor litters were sinks of nutrients until shifting to net P mineralization after ~40% mass loss. However, large variation surrounded both N and P predictions, suggesting the importance of non-microbial factors such as fragmentation by invertebrates. Detrital C:N ratios converged and became more similar toward the end of decomposition, suggesting predictable microbial functional effects throughout detrital ontogeny. C:P and N:P ratios also converged to some degree, but these model predictions were less robust than for C:N, due in part to the lower number of published detrital C:P time series. Explorations of environmental covariate effects were frequently limited by few coincident covariate measurements across studies, but temperature, N availability, and P tended to accelerate existing ontogenetic patterns in C:N. Our analysis helps unite organic matter decomposition across aquatic-terrestrial boundaries by describing basic patterns of elemental flows catalyzed by decomposition in streams, and points to a research agenda to continue addressing gaps in our knowledge of detrital nutrient dynamics across ecosystems. This article is protected by copyright. All rights reserved.
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Affiliation(s)
- Caleb J Robbins
- Department of Biology, Center for Reservoir and Aquatic Systems Research, Baylor University, Waco, TX, USA
| | - David W P Manning
- Department of Biology, University of Nebraska at Omaha, Omaha, NE, USA
| | | | - Beth C Norman
- Lacawac Sanctuary Field Station and Environmental Education Center, Lake Ariel, PA, USA
| | - Rebecca A Eckert
- Biology Department, Environmental Studies Department, Gettysburg College, Gettysburg, PA, USA
| | - Ada Pastor
- Group of Continental Aquatic Ecology Research (GRECO), Institute of Aquatic Ecology, University of Girona, Girona, Spain
| | - Allyn K Dodd
- Arkansas School for Math, Sciences, and the Arts, Hot Springs, AR, USA
| | - Jérémy Jabiol
- HYFE - Hydrobiologie et Fonctionnement des Ecosystèmes, Elven, France
| | - Elliot Bastias
- Department of Ecology and Environmental Sciences, Umeå University, Umeå, Sweden
| | | | - Andrew S Mehring
- Department of Biology, University of Louisville, Louisville, KY, USA
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Cui Y, Meng JQ, Chen YH, Shao FF, Chen XZ, Jin Y, Zhang MX, Yun-Qian G, Luo FL, Yu FH. The priming effects of plant leachates on dissolved organic matter degradation in water depend on leachate type and water stability. ENVIRONMENTAL RESEARCH 2023; 223:115482. [PMID: 36775089 DOI: 10.1016/j.envres.2023.115482] [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: 11/25/2022] [Revised: 01/29/2023] [Accepted: 02/09/2023] [Indexed: 06/18/2023]
Abstract
The modification of dissolved organic matter (DOM) degradation by plant carbon inputs represents a critical biogeochemical process that controls carbon dynamics. However, the priming effects (PEs) different plant tissues induce on the degradation of DOM pools with different stabilities remain unknown. In this study, PEs, induced by different tissue leachates of Phragmites australis, were evaluated via changes in DOM components and properties of both fresh and tidal water (with different stabilities). The results showed that DOM derived from different plant tissue leachates differed in composition and bioavailability. Inputs of tissue leachates induced PEs with different intensities and directions (negative or positive) on DOM degradation of fresh and tidal water. In fresh water, the PEs of leaf and root leachates were significantly higher than those of stem and rhizome leachates. The PE direction changed for DOM degradation between fresh and tidal water. The addition of leaf and root leachates tended to induce positive PEs on DOM degradation of fresh water, while resulting in negative PEs on DOM degradation of tidal water. Negative PEs for tidal water DOM may be due to preferential utilization of microbes, high salinity, and/or the promotion of exogenous DOM production from plant tissues. The results indicate that intensity and direction of PEs induced by plant leachates depend on both leachate type and water stability. The findings highlight the necessity to examine the nature of exogenous and native DOM when interpreting the interactive processes that regulate DOM degradation.
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Affiliation(s)
- Yuan Cui
- School of Ecology and Nature Conservation, Beijing Forestry University, Beijing 100083, China
| | - Jian-Qiao Meng
- College of Biological Sciences and Technology, Beijing Forestry University, Beijing 100083, China
| | - Yu-Han Chen
- School of Ecology and Nature Conservation, Beijing Forestry University, Beijing 100083, China
| | - Fei-Fan Shao
- School of Ecology and Nature Conservation, Beijing Forestry University, Beijing 100083, China
| | - Xuan-Zheng Chen
- School of Ecology and Nature Conservation, Beijing Forestry University, Beijing 100083, China
| | - Yu Jin
- School of Ecology and Nature Conservation, Beijing Forestry University, Beijing 100083, China
| | - Ming-Xiang Zhang
- School of Ecology and Nature Conservation, Beijing Forestry University, Beijing 100083, China; The Key Laboratory of Ecological Protection in the Yellow River Basin of National Forestry and Grassland Administration, Beijing 100083, China
| | - Guo Yun-Qian
- College of Biological Sciences and Technology, Beijing Forestry University, Beijing 100083, China
| | - Fang-Li Luo
- School of Ecology and Nature Conservation, Beijing Forestry University, Beijing 100083, China; The Key Laboratory of Ecological Protection in the Yellow River Basin of National Forestry and Grassland Administration, Beijing 100083, China.
| | - Fei-Hai Yu
- Institute of Wetland Ecology & Clone Ecology; Zhejiang Provincial Key Laboratory of Plant Evolutionary Ecology and Conservation, Taizhou University, Taizhou 318000, China
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McDaniel MD, Bird JA, Pett-Ridge J, Marin-Spiotta E, Schmidt TM, Grandy AS. Diversifying and perennializing plants in agroecosystems alters retention of new C and N from crop residues. ECOLOGICAL APPLICATIONS : A PUBLICATION OF THE ECOLOGICAL SOCIETY OF AMERICA 2023; 33:e2784. [PMID: 36478617 DOI: 10.1002/eap.2784] [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: 09/22/2021] [Revised: 09/18/2022] [Accepted: 09/27/2022] [Indexed: 06/17/2023]
Abstract
Managing soils to retain new plant inputs is key to moving toward a sustainable and regenerative agriculture. Management practices, like diversifying and perennializing agroecosystems, may affect the decomposer organisms that regulate how new residue is converted to persistent soil organic matter. Here we tested whether 12 years of diversifying/perennializing plants in agroecosystems through extended rotations or grassland restoration would decrease losses of new plant residue inputs and, thus, increase retention of carbon (C) and nitrogen (N) in soil. We tracked dual-labeled (13 C and 15 N), isotopically enriched wheat (Triticum aestivum) residue in situ for 2 years as it decomposed in three agroecosystems: maize-soybean (CS) rotation, maize-soybean-wheat plus red clover and cereal rye cover crops (CSW2), and spring fallow management with regeneration of natural grassland species (seven to 10 species; SF). We measured losses of wheat residue (Cwheat and Nwheat ) in leached soil solution and greenhouse gas fluxes, as well as how much was recovered in microbial biomass and bulk soil at 5-cm increments down to 20 cm. CSW2 and SF both had unique, significant effects on residue decomposition and retention dynamics that were clear only when using nuanced metrics that able to tease apart subtle differences. For example, SF retained a greater portion of Cwheat in 0-5 cm surface soils (155%, p = 0.035) and narrowed the Cwheat to Nwheat ratio (p < 0.030) compared to CS. CSW2 increased an index of carbon-retention efficiency, Cwheat retained in the mesocosm divided by total measured, from 0.18 to 0.27 (49%, p = 0.001), compared to CS. Overall, we found that diversifying and extending the duration of living plants in agroecosystems can lead to greater retention of new residue inputs in subtle ways that require further investigation to fully understand.
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Affiliation(s)
- Marshall D McDaniel
- Department of Agronomy, Iowa State University, Ames, Iowa, USA
- Department of Natural Resources and the Environment, University of New Hampshire, Durham, New Hampshire, USA
| | - Jeffrey A Bird
- School of Earth & Environmental Sciences, Queens College, CUNY & The CUNY Graduate Center, New York, New York, USA
| | - Jennifer Pett-Ridge
- Physical and Life Sciences Directorate, Lawrence Livermore National Laboratory, Livermore, California, USA
- Life & Environmental Sciences Department, University of California, Merced, California, USA
| | - Erika Marin-Spiotta
- Department of Geography, University of Wisconsin-Madison, Madison, Wisconsin, USA
| | - Tom M Schmidt
- Department of Ecology and Evolutionary Biology, University of Michigan, Ann Arbor, Michigan, USA
| | - A Stuart Grandy
- Department of Natural Resources and the Environment, University of New Hampshire, Durham, New Hampshire, USA
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10
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Vivelo S, Alsairafi B, Walsh JT, Bhatnagar JM. Intrinsic growth rate and cellobiohydrolase activity underlie the phylogenetic signal to fungal decomposer succession. FUNGAL ECOL 2023. [DOI: 10.1016/j.funeco.2022.101180] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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11
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Joly F, Coq S, Subke J. Soil fauna precipitate the convergence of organic matter quality during decomposition. OIKOS 2022. [DOI: 10.1111/oik.09497] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Affiliation(s)
| | - Sylvain Coq
- CEFE, Univ. Montpellier, CNRS, EPHE, IRD, Univ. Paul‐Valéry Montpellier 3 MontpellierStirling France
| | - Jens‐Arne Subke
- Biological and Environmental Sciences, Univ. of Stirling Stirling UK
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12
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Li Z, Peng Q, Dong Y, Guo Y. The influence of increased precipitation and nitrogen deposition on the litter decomposition and soil microbial community structure in a semiarid grassland. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 844:157115. [PMID: 35787902 DOI: 10.1016/j.scitotenv.2022.157115] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/14/2022] [Revised: 06/09/2022] [Accepted: 06/28/2022] [Indexed: 06/15/2023]
Abstract
Litter decomposition is a major method in which nutrients are recycled, especially carbon and nitrogen elements, in terrestrial ecosystems. However, how the responses of litter quality and soil microbial communities to global changes alter litter decomposition remains unclear. A 4-year field manipulative experiment based on the litterbag method was conducted in a typical temperate semiarid grassland in China to explore how increased precipitation and nitrogen deposition affect decomposition processes via litter quality and soil microbial communities. Our results showed that water and nitrogen addition treatments could accelerate litter carbon release and promote mass loss through different pathways. Water addition had a direct positive effect on litter decomposition. However, nitrogen addition could indirectly promote litter decomposition by improving litter quality and increasing the bacterial and fungal ratios. The water addition treatment increased litter mass loss by 7.37 %, and the N addition treatments increased litter mass loss by 5.83 %-16.93 %. Moreover, water and nitrogen additions had antagonistic effects on litter decomposition. These findings revealed that litter quality and the soil bacterial to fungal ratio were the factors controlling litter decomposition. The changes in precipitation and nitrogen deposition will impact ecosystem carbon and nitrogen cycling by altering litter decomposition processes in semiarid grassland ecosystems under the context of climate change.
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Affiliation(s)
- ZhaoLin Li
- Key Laboratory of Land Surface Pattern and Simulation, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Qin Peng
- Key Laboratory of Land Surface Pattern and Simulation, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China.
| | - YunShe Dong
- Key Laboratory of Land Surface Pattern and Simulation, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China
| | - Yu Guo
- Key Laboratory of Land Surface Pattern and Simulation, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China; University of Chinese Academy of Sciences, Beijing 100049, China
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13
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Bonanomi G, Zotti M, Idbella M, Termolino P, De Micco V, Mazzoleni S. Field evidence for litter and self-DNA inhibitory effects on Alnus glutinosa roots. THE NEW PHYTOLOGIST 2022; 236:399-412. [PMID: 35852010 PMCID: PMC9805126 DOI: 10.1111/nph.18391] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/29/2022] [Accepted: 07/06/2022] [Indexed: 06/02/2023]
Abstract
Litter decomposition releases nutrients beneficial to plants but also induces phytotoxicity. Phytotoxicity can result from either labile allelopathic compounds or species specific and caused by conspecific DNA. Aquatic plants in flowing water generally do not suffer phytotoxicity because litter is regularly removed. In stagnant water or in litter packs an impact on root functionality can occur. So far, studies on water plant roots have been carried out in laboratory and never in field conditions. The effect of conspecific vs heterospecific litter and purified DNA were assessed on aquatic roots of the riparian woody species Alnus glutinosa L. using a novel method, using closed and open plastic tubes fixed to single roots in the field with closed tubes analogous to stagnant water. Four fresh and four decomposed litter types were used and analysed on extractable C, cellulose, lignin, N content and using 13 C-CPMAS NMR spectroscopy. Inhibitory effects were observed with fresh litter in closed systems, with a positive correlation with extractable C and negative with lignin and lignin : N ratio. Alnus self-DNA, but not heterologous one, caused acute toxic effects in the closed system. Our results demonstrate the first field-based evidence for self-DNA inhibition as causal factor of negative feedback between plants and substrate.
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Affiliation(s)
- Giuliano Bonanomi
- Department of Agricultural SciencesUniversity of Naples Federico IIvia Università 10080055Portici (Naples)Italy
- Task Force on Microbiome StudiesUniversity of Naples Federico II80100NaplesItaly
| | - Maurizio Zotti
- Department of Agricultural SciencesUniversity of Naples Federico IIvia Università 10080055Portici (Naples)Italy
| | - Mohamed Idbella
- Department of Agricultural SciencesUniversity of Naples Federico IIvia Università 10080055Portici (Naples)Italy
| | - Pasquale Termolino
- CNR‐IBBR institute of Bioscience and BioResourcesVia Università 13380055Portici (Naples)Italy
| | - Veronica De Micco
- Department of Agricultural SciencesUniversity of Naples Federico IIvia Università 10080055Portici (Naples)Italy
| | - Stefano Mazzoleni
- Department of Agricultural SciencesUniversity of Naples Federico IIvia Università 10080055Portici (Naples)Italy
- Task Force on Microbiome StudiesUniversity of Naples Federico II80100NaplesItaly
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14
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Effects of long-term enclosing on distributions of carbon and nitrogen in semia-arid grassland of Inner Mongolia. ECOL INFORM 2022. [DOI: 10.1016/j.ecoinf.2022.101762] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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15
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Abstract
Soil microbes play a central role in ecosystem element cycling. Yet a central question in microbial ecology remains unanswered: to what extent does the taxonomic composition of soil microbial communities mediate biogeochemical process rates? In this quantitative review, we explore the mechanisms that lead to variation in the strength of microbial community structure-function relationships over space and time. To evaluate these mechanisms, we conduct a meta-analysis of studies that have monitored the decomposition of sterilized plant litter inoculated with different microbial assemblages. We find that the influence of microbial community composition on litter decay is pervasive and strong, rivalling in magnitude the influence of litter chemistry on decomposition. However, no single environmental or experimental attribute was correlated with variation in the inoculum effect. These results emphasize the need to better understand ecological dynamics within microbial communities, particularly emergent features such as cross-feeding networks, to improve predictions of soil biogeochemical function.
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16
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Struijk M, Whitmore AP, Mortimer S, Shu X, Sizmur T. Absence of a home-field advantage within a short-rotation arable cropping system. PLANT AND SOIL 2022; 488:39-55. [PMID: 37600963 PMCID: PMC10435649 DOI: 10.1007/s11104-022-05419-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/25/2021] [Accepted: 03/29/2022] [Indexed: 08/22/2023]
Abstract
Aims The home-field advantage (HFA) hypothesis predicts faster decomposition of plant residues in home soil compared to soils with different plants (away), and has been demonstrated in forest and grassland ecosystems. It remains unclear if this legacy effect applies to crop residue decomposition in arable crop rotations. Such knowledge could improve our understanding of decomposition dynamics in arable soils and may allow optimisation of crop residue amendments in arable systems by cleverly combining crop-residue rotations with crop rotations to increase the amount of residue-derived C persisting in soil. Methods We tested the HFA hypothesis in a reciprocal transplant experiment with mesh bags containing wheat and oilseed rape residues in soils at three stages of a short-rotation cropping system. Subsets of mesh bags were retrieved monthly for six months to determine residue decomposition rates, concomitantly measuring soil available N, microbial community structure (phospholipid fatty acid analysis), and microbial activity (Tea Bag Index protocol) to assess how plants may influence litter decomposition rates via alterations to soil biochemical properties and microbial communities. Results The residues decomposed at similar rates at all rotational stages. Thorough data investigation using several statistical approaches revealed no HFA within the crop rotation. Soil microbial community structures were similar at all rotational stages. Conclusions We attribute the absence of an HFA to the shortness of the rotation and soil disturbance involved in intensive agricultural practices. It is therefore unlikely that appreciable benefits could be obtained in short conventionally managed arable rotations by introducing a crop-residue rotation. Supplementary Information The online version contains supplementary material available at 10.1007/s11104-022-05419-z.
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Affiliation(s)
- Marijke Struijk
- Department of Geography and Environmental Science, University of Reading, Reading, UK
- Department of Sustainable Agriculture Sciences, Rothamsted Research, Harpenden, UK
| | - Andrew P. Whitmore
- Department of Sustainable Agriculture Sciences, Rothamsted Research, Harpenden, UK
| | - Simon Mortimer
- School of Agriculture, Policy and Development, University of Reading, Reading, UK
| | - Xin Shu
- Department of Geography and Environmental Science, University of Reading, Reading, UK
| | - Tom Sizmur
- Department of Geography and Environmental Science, University of Reading, Reading, UK
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17
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A Cross-System Analysis of Litter Chemical Dynamics Throughout Decomposition. Ecosystems 2022. [DOI: 10.1007/s10021-022-00749-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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18
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Borden MA, Benda ND, Bean EZ, Dale AG. Effects of soil mitigation on lawn-dwelling invertebrates following residential development. JOURNAL OF URBAN ECOLOGY 2022. [DOI: 10.1093/jue/juac025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
Abstract
Residential areas are the most rapidly expanding land use type in the southeastern USA. Residential development impairs soil functions primarily through compaction and the removal or burial of topsoil and natural vegetation, which reduces water infiltration and retention, root penetration, and plant establishment. Plant stress reduces plant-derived ecosystem services and increases vulnerability to pests, often leading to supplemental management inputs in the form of irrigation, fertilizers, pesticides and labor. Soil-dwelling invertebrates, including detritivores and natural enemies of pests, drive valuable ecosystem functions that facilitate plant establishment and reduce maintenance inputs. Although poorly understood, soil disturbance during residential development likely disturbs these communities and reduces the services provided by soil-dwelling invertebrates. Here, we compare the effects of two soil compaction mitigation techniques, tillage with and without compost incorporation, on invertebrate communities and the services they provide over 2 years following residential development. We focus on the relationships between detritivores and detritus decomposition rates, entomopathogenic nematodes and the activity density of a key turfgrass pest and other arthropod herbivores and predators. We found that soil mitigation had no detectable benefit for epigeal arthropods within 1 year after disturbance, but that compost-amended soils supported greater arthropod richness and predator activity density than unmitigated soils in the second year after disturbance. In contrast, we found reduced insect-parasitic nematode activity associated with compost amendment. All taxa increased in abundance with time after development. These results can inform more sustainable residential development and landscape maintenance practices for more biodiverse and functional urban and residential ecosystems.
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Affiliation(s)
- Matthew A Borden
- Entomology and Nematology Department, University of Florida , Gainesville, FL 32611, USA
- Bartlett Tree Research Laboratories , 13768 Hamilton Road , Charlotte, NC 28278, USA
| | - Nicole D Benda
- Entomology and Nematology Department, University of Florida , Gainesville, FL 32611, USA
- Florida Department of Agriculture and Consumer Services, Division of Plant Industry , Gainesville, FL 32608, USA
| | - Eban Z Bean
- Agricultural and Biological Engineering Department, University of Florida , Gainesville, FL 32611, USA
| | - Adam G Dale
- Entomology and Nematology Department, University of Florida , Gainesville, FL 32611, USA
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19
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Zhou Y, Wang L, Chen Y, Zhang J, Xu Z, Guo L, Wang L, You C, Tan B, Zhang L, Chen L, Xiao J, Zhu P, Liu Y. Temporal dynamics of mixed litter humification in an alpine treeline ecotone. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 803:150122. [PMID: 34525692 DOI: 10.1016/j.scitotenv.2021.150122] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/07/2021] [Revised: 08/28/2021] [Accepted: 08/31/2021] [Indexed: 06/13/2023]
Abstract
Loss of plant diversity affects mountain ecosystem properties and processes, yet few studies have focused on the impact of plant function type deficiency on mixed litter humification. To fill this knowledge gap, we conducted a 1279-day litterbag decomposition experiment with six plant functional types of foliar litter to determine the temporal dynamic characteristics of mixed litter humification in a coniferous forest (CF) and an alpine shrubland (AS). The results indicated that the humus concentrations, the net accumulations and their relative mixed effects (RME) of most types were higher in CF than those in AS at 146 days, and humus net accumulations fell to approximately -80% of the initial level within 1279 days. The RME of the total humus and humic acid concentrations exhibited a general change from synergistic to antagonistic effects over time, but the mixing of single plant functional type impeded the formation of fulvic acid due to consistently exhibited antagonistic effects. Ultimately, correlation analysis indicated that environmental factors (temperature, snow depth and freeze-thaw cycles) significantly hindered litter humification in the early stage, while some initial quality factors drove this process at a longer scale. Among these aspects, the concentrations of zinc, copper and iron, as well as acid-unhydrolyzable residue (AUR):nitrogen and AUR:phosphorous, stimulated humus accumulation, while water-soluble extractables, potassium, magnesium and aluminium hampered it. Deficiencies in a single plant functional type and vegetation type variations affected litter humification at the alpine treeline, which will further affect soil carbon sequestration, which is of great significance for understanding the material circulation of alpine ecosystems.
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Affiliation(s)
- Yu Zhou
- Long-term Research Station of Alpine Ecosystems, Key laboratory of Ecological Forestry Engineering of Sichuan Province, Institute of Ecology & Forests, Sichuan Agricultural University, Chengdu 611130, China
| | - Lifeng Wang
- Long-term Research Station of Alpine Ecosystems, Key laboratory of Ecological Forestry Engineering of Sichuan Province, Institute of Ecology & Forests, Sichuan Agricultural University, Chengdu 611130, China
| | - Yamei Chen
- Key Laboratory of Southwest China Wildlife Resources Conservation, China West Normal University, Ministry of Education, Nanchong, Sichuan 637009, China
| | - Jian Zhang
- Long-term Research Station of Alpine Ecosystems, Key laboratory of Ecological Forestry Engineering of Sichuan Province, Institute of Ecology & Forests, Sichuan Agricultural University, Chengdu 611130, China
| | - Zhenfeng Xu
- Long-term Research Station of Alpine Ecosystems, Key laboratory of Ecological Forestry Engineering of Sichuan Province, Institute of Ecology & Forests, Sichuan Agricultural University, Chengdu 611130, China
| | - Li Guo
- College of Landscape Architecture, Sichuan Agricultural University, Chengdu 611130, China
| | - Lixia Wang
- Long-term Research Station of Alpine Ecosystems, Key laboratory of Ecological Forestry Engineering of Sichuan Province, Institute of Ecology & Forests, Sichuan Agricultural University, Chengdu 611130, China
| | - Chengming You
- Long-term Research Station of Alpine Ecosystems, Key laboratory of Ecological Forestry Engineering of Sichuan Province, Institute of Ecology & Forests, Sichuan Agricultural University, Chengdu 611130, China
| | - Bo Tan
- Long-term Research Station of Alpine Ecosystems, Key laboratory of Ecological Forestry Engineering of Sichuan Province, Institute of Ecology & Forests, Sichuan Agricultural University, Chengdu 611130, China
| | - Li Zhang
- Long-term Research Station of Alpine Ecosystems, Key laboratory of Ecological Forestry Engineering of Sichuan Province, Institute of Ecology & Forests, Sichuan Agricultural University, Chengdu 611130, China
| | - LiangHua Chen
- Long-term Research Station of Alpine Ecosystems, Key laboratory of Ecological Forestry Engineering of Sichuan Province, Institute of Ecology & Forests, Sichuan Agricultural University, Chengdu 611130, China
| | - JiuJin Xiao
- Long-term Research Station of Alpine Ecosystems, Key laboratory of Ecological Forestry Engineering of Sichuan Province, Institute of Ecology & Forests, Sichuan Agricultural University, Chengdu 611130, China
| | - Peng Zhu
- Long-term Research Station of Alpine Ecosystems, Key laboratory of Ecological Forestry Engineering of Sichuan Province, Institute of Ecology & Forests, Sichuan Agricultural University, Chengdu 611130, China
| | - Yang Liu
- Long-term Research Station of Alpine Ecosystems, Key laboratory of Ecological Forestry Engineering of Sichuan Province, Institute of Ecology & Forests, Sichuan Agricultural University, Chengdu 611130, China.
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20
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Zan P, Mao Z, Sun T. Effects of soil fauna on litter decomposition in Chinese forests: a meta-analysis. PeerJ 2022; 10:e12747. [PMID: 35047237 PMCID: PMC8757372 DOI: 10.7717/peerj.12747] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2021] [Accepted: 12/14/2021] [Indexed: 01/07/2023] Open
Abstract
Litter quality and climate have been presumed to be the dominant factors regulating litter decomposition rates on broad spatial scales. However, the role of soil fauna on litter decomposition is poorly understood, despite the fact that it could strongly influence decomposition by fragmentation and subsequent modification of the activities of microorganisms.In this study, we carried out a meta-analysis on the effects of soil fauna on litter decomposition rates in Chinese forests, ranging from boreal to tropical forests, based on data from 20 studies. The effects of climatic factors on decomposition rate were assessed by comparing the contribution of soil fauna to litter decomposition from studies carried out at different latitudes.The degree of influence of the soil fauna was in the order tropical (200%) > subtropical (47%) > temperate forest (28%). Comparing the effect size of soil fauna, it was found that when soil fauna was excluded, the decomposition rate, calculated using Olson's equation, was most affected in tropical forest (-0.77), while the litter decomposition rate both subtropical (-0.36) and temperate forest (-0.19) were also suppressed to varying degrees (P < 0.001). These results highlight that soil fauna could promote litter decomposition to different extents. Using stepwise multiple linear regression, the effect size of the soil fauna was negatively correlated with the cellulose and nitrogen concentrations of the initial litter material. In Chinese forests, litter decomposition rates were reduced, on average, by 65% when soil fauna was excluded. The impact of soil fauna on decomposition was shown to be closely related to climate and litter quality.
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Affiliation(s)
- Peng Zan
- Northeast Forestry University, Key Laboratory of Forest Plant Ecology, Ministry of Education, Harbin, China,Northeast Forestry University, College of Chemistry, Chemical Engineering and Resource Utilization, Harbin, China
| | - Zijun Mao
- Northeast Forestry University, Key Laboratory of Forest Plant Ecology, Ministry of Education, Harbin, China,Northeast Forestry University, College of Chemistry, Chemical Engineering and Resource Utilization, Harbin, China
| | - Tao Sun
- Chinese Academy of Sciences, Key Laboratory of Forest Ecology and Management, Institute of Applied Ecology, Shenyang, Liaoning province, China
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21
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Liao C, Long C, Zhang Q, Cheng X. Stronger effect of litter quality than micro‐organisms on leaf and root litter C and N loss at different decomposition stages following a subtropical land use change. Funct Ecol 2022. [DOI: 10.1111/1365-2435.13999] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- Chang Liao
- Key Laboratory of Soil Ecology and Health in Universities of Yunnan Province School of Ecology and Environmental Science Yunnan University Kunming China
| | - Chunyan Long
- Key Laboratory of Soil Ecology and Health in Universities of Yunnan Province School of Ecology and Environmental Science Yunnan University Kunming China
| | - Qian Zhang
- Key Laboratory of Soil Ecology and Health in Universities of Yunnan Province School of Ecology and Environmental Science Yunnan University Kunming China
| | - Xiaoli Cheng
- Key Laboratory of Soil Ecology and Health in Universities of Yunnan Province School of Ecology and Environmental Science Yunnan University Kunming China
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22
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Hu X, Arif M, Ding D, Li J, He X, Li C. Invasive Plants and Species Richness Impact Litter Decomposition in Riparian Zones. FRONTIERS IN PLANT SCIENCE 2022; 13:955656. [PMID: 35873999 PMCID: PMC9301390 DOI: 10.3389/fpls.2022.955656] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/29/2022] [Accepted: 06/14/2022] [Indexed: 05/03/2023]
Abstract
Natural ecosystems generally include litter decomposition as part of the natural cycle since the material properties and the environment greatly influence the decomposition rate. The invasion of exotic plants alters the species diversity and growth characteristics of plant communities, but its impact on litter decomposition is unknown in the riparian zone. This study examines how invasive plants affect the early stages of litter decomposition and how species richness impacts them. This experiment involved a random litter mixture of exotic (Alternanthera philoxeroides and Bidens pilosa) and native species in the riparian zone of the Three Gorges Dam Reservoir in China. There were 43 species mixture types, with various species richness ranging from 1 to 6. Litterbags were placed in the hydro-fluctuation zone and terrestrial zone, where they decomposed over the course of 55 days. Invasive plants decompose rapidly compared to native plants (35.71% of the remaining mass of the invasive plant). The invasive plant A. philoxeroides has the potential to accelerate native plant decomposition (0.29 of non-added synergetic effect), but Bidens pilosa cannot. Nonetheless, species richness had little effect on the decomposition rate. These effects are dependent upon differences in chemical functional characteristics among the species. The initial traits of the plants, specifically C, N, and C/N, were significantly and linearly correlated with the loss of mixed litter mass and mixing effect strength (P < 0.01). In addition, submergence decomposition conditions reduce the disturbance of invasive plants and predict decomposition rates based on litter characteristics. Invasive plants can therefore impact the material cycle of an ecosystem. There is a need to examine decomposition time, which may also involve considering other factors.
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Affiliation(s)
- 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
| | - 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
| | - 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
| | - 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
| | - Xinrui He
- 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
- *Correspondence: Changxiao Li
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23
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Nuccio EE, Nguyen NH, Nunes da Rocha U, Mayali X, Bougoure J, Weber PK, Brodie E, Firestone M, Pett-Ridge J. Community RNA-Seq: multi-kingdom responses to living versus decaying roots in soil. ISME COMMUNICATIONS 2021; 1:72. [PMID: 36765158 PMCID: PMC9723751 DOI: 10.1038/s43705-021-00059-3] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/19/2021] [Revised: 09/14/2021] [Accepted: 09/23/2021] [Indexed: 12/25/2022]
Abstract
Roots are a primary source of organic carbon input in most soils. The consumption of living and detrital root inputs involves multi-trophic processes and multiple kingdoms of microbial life, but typical microbial ecology studies focus on only one or two major lineages. We used Illumina shotgun RNA sequencing to conduct PCR-independent SSU rRNA community analysis ("community RNA-Seq") and simultaneously assess the bacteria, archaea, fungi, and microfauna surrounding both living and decomposing roots of the annual grass, Avena fatua. Plants were grown in 13CO2-labeled microcosms amended with 15N-root litter to identify the preferences of rhizosphere organisms for root exudates (13C) versus decaying root biomass (15N) using NanoSIMS microarray imaging (Chip-SIP). When litter was available, rhizosphere and bulk soil had significantly more Amoebozoa, which are potentially important yet often overlooked top-down drivers of detritusphere community dynamics and nutrient cycling. Bulk soil containing litter was depleted in Actinobacteria but had significantly more Bacteroidetes and Proteobacteria. While Actinobacteria were abundant in the rhizosphere, Chip-SIP showed Actinobacteria preferentially incorporated litter relative to root exudates, indicating this group's more prominent role in detritus elemental cycling in the rhizosphere. Our results emphasize that decomposition is a multi-trophic process involving complex interactions, and our methodology can be used to track the trajectory of carbon through multi-kingdom soil food webs.
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Affiliation(s)
- Erin E Nuccio
- Physical and Life Sciences Directorate, Lawrence Livermore National Laboratory, Livermore, CA, USA.
| | - Nhu H Nguyen
- Department of Tropical Plant and Soil Sciences, University of Hawai'i at Mānoa, Honolulu, HI, USA
| | - Ulisses Nunes da Rocha
- Department of Environmental Microbiology, Helmholtz Centre for Environmental Research, Leipzig, Germany
| | - Xavier Mayali
- Physical and Life Sciences Directorate, Lawrence Livermore National Laboratory, Livermore, CA, USA
| | - Jeremy Bougoure
- Centre for Microscopy, Characterisation & Analysis, The University of Western Australia, Perth, Australia
| | - Peter K Weber
- Physical and Life Sciences Directorate, Lawrence Livermore National Laboratory, Livermore, CA, USA
| | - Eoin Brodie
- Earth and Environmental Sciences, Lawrence Berkeley National Laboratory, Berkeley, CA, USA
- Department of Environmental Science, Policy and Management, University of California, Berkeley, CA, USA
| | - Mary Firestone
- Earth and Environmental Sciences, Lawrence Berkeley National Laboratory, Berkeley, CA, USA
- Department of Environmental Science, Policy and Management, University of California, Berkeley, CA, USA
| | - Jennifer Pett-Ridge
- Physical and Life Sciences Directorate, Lawrence Livermore National Laboratory, Livermore, CA, USA.
- Life and Environmental Sciences Department, University of California Merced, Merced, CA, USA.
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24
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Kroeger ME, Rae DeVan M, Thompson J, Johansen R, Gallegos-Graves LV, Lopez D, Runde A, Yoshida T, Munsky B, Sevanto S, Albright MBN, Dunbar J. Microbial community composition controls carbon flux across litter types in early phase of litter decomposition. Environ Microbiol 2021; 23:6676-6693. [PMID: 34390621 PMCID: PMC9291330 DOI: 10.1111/1462-2920.15705] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2021] [Accepted: 08/02/2021] [Indexed: 11/30/2022]
Abstract
Leaf litter decomposition is a major carbon input to soil, making it a target for increasing soil carbon storage through microbiome engineering. We expand upon previous findings to show with multiple leaf litter types that microbial composition can drive variation in carbon flow from litter decomposition and specific microbial community features are associated with synonymous patterns of carbon flow among litter types. Although plant litter type selects for different decomposer communities, within a litter type, microbial composition drives variation in the quantity of dissolved organic carbon (DOC) measured at the end of the decomposition period. Bacterial richness was negatively correlated with DOC quantity, supporting our hypothesis that across multiple litter types there are common microbial traits linked to carbon flow patterns. Variation in DOC abundance (i.e. high versus low DOC) driven by microbial composition is tentatively due to differences in bacterial metabolism of labile compounds, rather than catabolism of non‐labile substrates such as lignin. The temporal asynchrony of metabolic processes across litter types may be a substantial impediment to discovering more microbial features common to synonymous patterns of carbon flow among litters. Overall, our findings support the concept that carbon flow may be programmed by manipulating microbial community composition.
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Affiliation(s)
- Marie E Kroeger
- Bioscience Division, Los Alamos National Laboratory, Mailstop M888, Los Alamos, NM, 87545, USA
| | - M Rae DeVan
- Bioscience Division, Los Alamos National Laboratory, Mailstop M888, Los Alamos, NM, 87545, USA
| | - Jaron Thompson
- Department of Chemical and Biological Engineering, Colorado State University, Fort Collins, CO, 80523, USA
| | - Renee Johansen
- Bioscience Division, Los Alamos National Laboratory, Mailstop M888, Los Alamos, NM, 87545, USA.,Manaaki Whenua - Landcare Research, Private Bag 92170, Auckland Mail Centre, Auckland, New Zealand
| | | | - Deanna Lopez
- Bioscience Division, Los Alamos National Laboratory, Mailstop M888, Los Alamos, NM, 87545, USA
| | - Andreas Runde
- Bioscience Division, Los Alamos National Laboratory, Mailstop M888, Los Alamos, NM, 87545, USA
| | - Thomas Yoshida
- Chemical Diagnostics and Engineering, Los Alamos National Laboratory, Mailstop K484, Los Alamos, NM, 87544, USA
| | - Brian Munsky
- Department of Chemical and Biological Engineering, Colorado State University, Fort Collins, CO, 80523, USA.,School of Biomedical Engineering, Colorado State University, Fort Collins, CO, 80523, USA
| | - Sanna Sevanto
- Earth and Environmental Sciences Division, Los Alamos National Laboratory, Mailstop J495, Los Alamos, NM, 87545, USA
| | - Michaeline B N Albright
- Bioscience Division, Los Alamos National Laboratory, Mailstop M888, Los Alamos, NM, 87545, USA
| | - John Dunbar
- Bioscience Division, Los Alamos National Laboratory, Mailstop M888, Los Alamos, NM, 87545, USA
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25
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Cates AM, Wills BD, Kim TN, Landis DA, Gratton C, Read HW, Jackson RD. No evidence of top‐down effects by ants on litter decomposition in a temperate grassland. Ecosphere 2021. [DOI: 10.1002/ecs2.3638] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022] Open
Affiliation(s)
- Anna M. Cates
- Department of Soil, Water, and Climate University of Minnesota St. Paul Minnesota 55108 USA
- DOE‐Great Lakes Bioenergy Research Center Madison Wisconsin 53726 USA
| | - Bill D. Wills
- Department of Biological Sciences Auburn University Auburn Alabama 36849 USA
| | - Tania N. Kim
- Department of Entomology Kansas State University Manhattan Kansas 66506 USA
| | - Douglas A. Landis
- DOE‐Great Lakes Bioenergy Research Center Madison Wisconsin 53726 USA
- Department of Entomology Michigan State University East Lansing Michigan 48824 USA
| | - Claudio Gratton
- DOE‐Great Lakes Bioenergy Research Center Madison Wisconsin 53726 USA
- Department of Entomology University of Wisconsin‐Madison Madison Wisconsin 53706 USA
| | - Harry W. Read
- Department of Soil Science University of Wisconsin‐Madison Madison Wisconsin 53706 USA
| | - Randall D. Jackson
- DOE‐Great Lakes Bioenergy Research Center Madison Wisconsin 53726 USA
- Department of Agronomy University of Wisconsin‐Madison Madison Wisconsin 53706 USA
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26
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Gogo S, Leroy F, Zocatelli R, Jacotot A, Laggoun‐Défarge F. Determinism of nonadditive litter mixture effect on decomposition: Role of the moisture content of litters. Ecol Evol 2021; 11:9530-9542. [PMID: 34306640 PMCID: PMC8293766 DOI: 10.1002/ece3.7771] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2020] [Revised: 05/18/2021] [Accepted: 05/21/2021] [Indexed: 11/17/2022] Open
Abstract
The mechanisms behind the plant litter mixture effect on decomposition are still difficult to disentangle. To tackle this issue, we used a model that specifically addresses the role of the litter moisture content. Our model predicts that when two litters interact in terms of water flow, the difference of evaporation rate between two litters can trigger a nonadditive mixture effect on decomposition. Water flows from the wettest to the driest litter, changing the reaction rates without changing the overall litter water content. The reaction rate of the litter receiving the water increases relatively more than the decrease in the reaction rate of the litter supplying the water, leading to a synergistic effect. Such water flow can keep the microbial biomass of both litter in a water content domain suitable to maintain decomposition activity. When applied to experimental data (Sphagnum rubellum and Molinia caerulea litters), the model is able to assess whether any nonadditive effect originates from water content variation alone or whether other factors have to be taken into account.
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Affiliation(s)
| | - Fabien Leroy
- Univ. Orléans, CNRS, BRGM, ISTO, UMR 7327OrléansFrance
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27
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Ferreira GWD, Oliveira FCC, Soares EMB, Schnecker J, Silva IR, Grandy AS. Retaining eucalyptus harvest residues promotes different pathways for particulate and mineral‐associated organic matter. Ecosphere 2021. [DOI: 10.1002/ecs2.3439] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Affiliation(s)
- Gabriel W. D. Ferreira
- Department of Soil Science Federal University of Viçosa Viçosa MG36570‐900Brazil
- Department of Natural Resources and the Environment University of New Hampshire Durham New Hampshire03833USA
| | | | | | - Jörg Schnecker
- Department of Natural Resources and the Environment University of New Hampshire Durham New Hampshire03833USA
- Department of Microbiology and Ecosystem Science University of Vienna Vienna Austria
| | - Ivo R. Silva
- Department of Soil Science Federal University of Viçosa Viçosa MG36570‐900Brazil
| | - A. Stuart Grandy
- Department of Natural Resources and the Environment University of New Hampshire Durham New Hampshire03833USA
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28
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Chiba A, Uchida Y, Kublik S, Vestergaard G, Buegger F, Schloter M, Schulz S. Soil Bacterial Diversity Is Positively Correlated with Decomposition Rates during Early Phases of Maize Litter Decomposition. Microorganisms 2021; 9:microorganisms9020357. [PMID: 33670245 PMCID: PMC7916959 DOI: 10.3390/microorganisms9020357] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2021] [Revised: 02/07/2021] [Accepted: 02/09/2021] [Indexed: 12/16/2022] Open
Abstract
This study aimed to investigate the effects of different levels of soil- and plant-associated bacterial diversity on the rates of litter decomposition, and bacterial community dynamics during its early phases. We performed an incubation experiment where soil bacterial diversity (but not abundance) was manipulated by autoclaving and reinoculation. Natural or autoclaved maize leaves were applied to the soils and incubated for 6 weeks. Bacterial diversity was assessed before and during litter decomposition using 16S rRNA gene metabarcoding. We found a positive correlation between litter decomposition rates and soil bacterial diversity. The soil with the highest bacterial diversity was dominated by oligotrophic bacteria including Acidobacteria, Nitrospiraceae, and Gaiellaceae, and its community composition did not change during the incubation. In the less diverse soils, those taxa were absent but were replaced by copiotrophic bacteria, such as Caulobacteraceae and Beijerinckiaceae, until the end of the incubation period. SourceTracker analysis revealed that litter-associated bacteria, such as Beijerinckiaceae, only became part of the bacterial communities in the less diverse soils. This suggests a pivotal role of oligotrophic bacteria during the early phases of litter decomposition and the predominance of copiotrophic bacteria at low diversity.
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Affiliation(s)
- Akane Chiba
- Research Faculty of Agriculture, Hokkaido University, Sapporo 060-8589, Japan; (A.C.); (Y.U.)
- Research Unit Comparative Microbiome Analysis, Helmholtz Zentrum München, German Research Centre for Environmental Health, 85764 Neuherberg, Germany; (S.K.); (G.V.); (M.S.)
- Crop Physiology, TUM School of Life Science, Technical University of Munich, 85354 Freising, Germany
| | - Yoshitaka Uchida
- Research Faculty of Agriculture, Hokkaido University, Sapporo 060-8589, Japan; (A.C.); (Y.U.)
| | - Susanne Kublik
- Research Unit Comparative Microbiome Analysis, Helmholtz Zentrum München, German Research Centre for Environmental Health, 85764 Neuherberg, Germany; (S.K.); (G.V.); (M.S.)
| | - Gisle Vestergaard
- Research Unit Comparative Microbiome Analysis, Helmholtz Zentrum München, German Research Centre for Environmental Health, 85764 Neuherberg, Germany; (S.K.); (G.V.); (M.S.)
- Section of Bioinformatics, Department of Health Technology, Technical University of Denmark, 2800 Kgs. Lyngby, Denmark
| | - Franz Buegger
- Institute of Biochemical Plant Pathology, Helmholtz Zentrum München, German Research Centre for Environmental Health, 85764 Neuherberg, Germany;
| | - Michael Schloter
- Research Unit Comparative Microbiome Analysis, Helmholtz Zentrum München, German Research Centre for Environmental Health, 85764 Neuherberg, Germany; (S.K.); (G.V.); (M.S.)
- TUM School of Life Science, Technical University of Munich, 85354 Freising, Germany
| | - Stefanie Schulz
- Research Unit Comparative Microbiome Analysis, Helmholtz Zentrum München, German Research Centre for Environmental Health, 85764 Neuherberg, Germany; (S.K.); (G.V.); (M.S.)
- Correspondence: ; Tel.: +49-(0)89-3187-3054
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29
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Wang L, Chen Y, Zhou Y, Zheng H, Xu Z, Tan B, You C, Zhang L, Li H, Guo L, Wang L, Huang Y, Zhang J, Liu Y. Litter chemical traits strongly drove the carbon fractions loss during decomposition across an alpine treeline ecotone. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 753:142287. [PMID: 33207458 DOI: 10.1016/j.scitotenv.2020.142287] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/02/2020] [Revised: 09/06/2020] [Accepted: 09/07/2020] [Indexed: 06/11/2023]
Abstract
The decomposition of litter carbon (C) fraction is a major determinant of soil organic matter pool and nutrient cycling. However, knowledge of litter chemical traits regulate C fractions release is still relatively limited. A litterbag experiment was conducted using six plant functional litter types at two vegetation type (coniferous forest and alpine shrubland) in a treeline ecotone. We evaluated the relative importance of litter chemistry (i.e. Nutrient, C quality, and stoichiometry) on the loss of litter mass, non-polar extractables (NPE), water-soluble extractables (WSE), acid-hydrolyzable carbohydrates (ACID), and acid-unhydrolyzable residue (AUR) during decomposition. Litter nutrients contain nitrogen (N), phosphorus (P), potassium (K), calcium (Ca), sodium (Na), magnesium (Mg), aluminium (Al), manganese (Mn), zinc (Zn), iron (Fe) and copper (Cu), litter C quality contains C, WSE, NPE, ACID, and AUR, and stoichiometry was defined by C:N, C:P; N:P, ACID:N, and AUR:N. The results showed single exponential model fitted decomposition rates of litter mass and C fractions better than double exponential or asymptotic decomposition, and the decomposition rates of C fractions were strongly correlated with initial litter nutrients, especially K, Na, Ca. Furthermore, the temporal dynamics of litter nutrients (Ca, Mg, Na, K, Zn, and Fe) strongly regulated C fractions loss during the decomposition process. Changes in litter C quality had an evident effect on the degradation of ACID and AUR, supporting the concept of "priming effect" of soluble carbon fraction. The significant differences were found in the release of NPE, WSE, and ACID rather than AUR among coniferous forest and alpine shrubland, and the vegetation type effects largely depend on the changes in litter stoichiometry, which is an important implication for the change in plant community abundance regulate decay. Collectively, elucidating the hierarchical drivers of litter chemistry on decomposition is critical to soil C sequestration in alpine ecosystems.
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Affiliation(s)
- Lifeng Wang
- National Forestry and Grassland Administration Key Laboratory of Forest Resources Conservation and Ecological Safety on the Upper Reaches of the Yangtze River, Sichuan Province Key Laboratory of Ecological Forestry Engineering on the Upper Reaches of the Yangtze River, Long-term Research Station of Alpine Forest Ecosystems, Institute of Ecology & Forestry, Sichuan Agricultural University, Chengdu 611130, China
| | - Yamei Chen
- Key Laboratory of Southwest China Wildlife Resources Conservation, China West Normal University, Ministry of Education, Nanchong, Sichuan 637009, China
| | - Yu Zhou
- National Forestry and Grassland Administration Key Laboratory of Forest Resources Conservation and Ecological Safety on the Upper Reaches of the Yangtze River, Sichuan Province Key Laboratory of Ecological Forestry Engineering on the Upper Reaches of the Yangtze River, Long-term Research Station of Alpine Forest Ecosystems, Institute of Ecology & Forestry, Sichuan Agricultural University, Chengdu 611130, China
| | - Haifeng Zheng
- Department of Geosciences and Natural Resource Management, University of Copenhagen, Rolighedsvej 23, 1958 Frederiksberg C, Denmark
| | - Zhenfeng Xu
- National Forestry and Grassland Administration Key Laboratory of Forest Resources Conservation and Ecological Safety on the Upper Reaches of the Yangtze River, Sichuan Province Key Laboratory of Ecological Forestry Engineering on the Upper Reaches of the Yangtze River, Long-term Research Station of Alpine Forest Ecosystems, Institute of Ecology & Forestry, Sichuan Agricultural University, Chengdu 611130, China
| | - Bo Tan
- National Forestry and Grassland Administration Key Laboratory of Forest Resources Conservation and Ecological Safety on the Upper Reaches of the Yangtze River, Sichuan Province Key Laboratory of Ecological Forestry Engineering on the Upper Reaches of the Yangtze River, Long-term Research Station of Alpine Forest Ecosystems, Institute of Ecology & Forestry, Sichuan Agricultural University, Chengdu 611130, China
| | - Chengming You
- National Forestry and Grassland Administration Key Laboratory of Forest Resources Conservation and Ecological Safety on the Upper Reaches of the Yangtze River, Sichuan Province Key Laboratory of Ecological Forestry Engineering on the Upper Reaches of the Yangtze River, Long-term Research Station of Alpine Forest Ecosystems, Institute of Ecology & Forestry, Sichuan Agricultural University, Chengdu 611130, China
| | - Li Zhang
- National Forestry and Grassland Administration Key Laboratory of Forest Resources Conservation and Ecological Safety on the Upper Reaches of the Yangtze River, Sichuan Province Key Laboratory of Ecological Forestry Engineering on the Upper Reaches of the Yangtze River, Long-term Research Station of Alpine Forest Ecosystems, Institute of Ecology & Forestry, Sichuan Agricultural University, Chengdu 611130, China
| | - Han Li
- National Forestry and Grassland Administration Key Laboratory of Forest Resources Conservation and Ecological Safety on the Upper Reaches of the Yangtze River, Sichuan Province Key Laboratory of Ecological Forestry Engineering on the Upper Reaches of the Yangtze River, Long-term Research Station of Alpine Forest Ecosystems, Institute of Ecology & Forestry, Sichuan Agricultural University, Chengdu 611130, China
| | - Li Guo
- College of Landscape Architecture, Sichuan Agricultural University, Chengdu 611130, China
| | - Lixia Wang
- National Forestry and Grassland Administration Key Laboratory of Forest Resources Conservation and Ecological Safety on the Upper Reaches of the Yangtze River, Sichuan Province Key Laboratory of Ecological Forestry Engineering on the Upper Reaches of the Yangtze River, Long-term Research Station of Alpine Forest Ecosystems, Institute of Ecology & Forestry, Sichuan Agricultural University, Chengdu 611130, China
| | - Youyou Huang
- Key Laboratory of Southwest China Wildlife Resources Conservation, China West Normal University, Ministry of Education, Nanchong, Sichuan 637009, China
| | - Jian Zhang
- National Forestry and Grassland Administration Key Laboratory of Forest Resources Conservation and Ecological Safety on the Upper Reaches of the Yangtze River, Sichuan Province Key Laboratory of Ecological Forestry Engineering on the Upper Reaches of the Yangtze River, Long-term Research Station of Alpine Forest Ecosystems, Institute of Ecology & Forestry, Sichuan Agricultural University, Chengdu 611130, China.
| | - Yang Liu
- National Forestry and Grassland Administration Key Laboratory of Forest Resources Conservation and Ecological Safety on the Upper Reaches of the Yangtze River, Sichuan Province Key Laboratory of Ecological Forestry Engineering on the Upper Reaches of the Yangtze River, Long-term Research Station of Alpine Forest Ecosystems, Institute of Ecology & Forestry, Sichuan Agricultural University, Chengdu 611130, China.
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30
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Xia S, Song Z, Li Q, Guo L, Yu C, Singh BP, Fu X, Chen C, Wang Y, Wang H. Distribution, sources, and decomposition of soil organic matter along a salinity gradient in estuarine wetlands characterized by C:N ratio, δ 13 C-δ 15 N, and lignin biomarker. GLOBAL CHANGE BIOLOGY 2021; 27:417-434. [PMID: 33068483 DOI: 10.1111/gcb.15403] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/31/2020] [Revised: 09/25/2020] [Accepted: 10/07/2020] [Indexed: 06/11/2023]
Abstract
Despite increasing recognition of the critical role of coastal wetlands in mitigating climate change, sea-level rise, and salinity increase, soil organic carbon (SOC) sequestration mechanisms in estuarine wetlands remain poorly understood. Here, we present new results on the source, decomposition, and storage of SOC in estuarine wetlands with four vegetation types, including single Phragmites australis (P, habitat I), a mixture of P. australis and Suaeda salsa (P + S, habitat II), single S. salsa (S, habitat III), and tidal flat (TF, habitat IV) across a salinity gradient. Values of δ13 C increased with depth in aerobic soil layers (0-40 cm) but slightly decreased in anaerobic soil layers (40-100 cm). The δ15 N was significantly enriched in soil organic matter at all depths than in the living plant tissues, indicating a preferential decomposition of 14 N-enriched organic components. Thus, the kinetic isotope fractionation during microbial degradation and the preferential substrate utilization are the dominant mechanisms in regulating isotopic compositions in aerobic and anaerobic conditions, respectively. Stable isotopic (δ13 C and δ15 N), elemental (C and N), and lignin composition (inherited (Ad/Al)s and C/V) were not completely consistent in reflecting the differences in SOC decomposition or accumulation among four vegetation types, possibly due to differences in litter inputs, root distributions, substrate quality, water-table level, salinity, and microbial community composition/activity. Organic C contents and storage decreased from upstream to downstream, likely due to primarily changes in autochthonous sources (e.g., decreased onsite plant biomass input) and allochthonous materials (e.g., decreased fluvially transported upland river inputs, and increased tidally induced marine algae and phytoplankton). Our results revealed that multiple indicators are essential to unravel the degree of SOC decomposition and accumulation, and a combination of C:N ratios, δ13 C, δ15 N, and lignin biomarker provides a robust approach to decipher the decomposition and source of sedimentary organic matter along the river-estuary-ocean continuum.
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Affiliation(s)
- Shaopan Xia
- Institute of Surface-Earth System Science, School of Earth System Science, Tianjin University, Tianjin, China
- Tianjin Key Laboratory of Earth Critical Zone Science and Sustainable Development in Bohai Rim, Tianjin University, Tianjin, China
| | - Zhaoliang Song
- Institute of Surface-Earth System Science, School of Earth System Science, Tianjin University, Tianjin, China
- Tianjin Key Laboratory of Earth Critical Zone Science and Sustainable Development in Bohai Rim, Tianjin University, Tianjin, China
| | - Qiang Li
- Institute of Surface-Earth System Science, School of Earth System Science, Tianjin University, Tianjin, China
- Tianjin Key Laboratory of Earth Critical Zone Science and Sustainable Development in Bohai Rim, Tianjin University, Tianjin, China
| | - Laodong Guo
- School of Freshwater Sciences, University of Wisconsin-Milwaukee, Milwaukee, WI, USA
| | - Changxun Yu
- Department of Biology and Environmental Science, Linnaeus University, Kalmar, Sweden
| | - Bhupinder Pal Singh
- Elizabeth Macarthur Agricultural Institute, NSW Department of Primary Industries, Menangle, NSW, Australia
| | - Xiaoli Fu
- Institute of Surface-Earth System Science, School of Earth System Science, Tianjin University, Tianjin, China
| | - Chunmei Chen
- Institute of Surface-Earth System Science, School of Earth System Science, Tianjin University, Tianjin, China
| | - Yidong Wang
- Tianjin Key Laboratory of Water Resources and Environment, School of Geographic and Environmental Sciences, Tianjin Normal University, Tianjin, China
| | - Hailong Wang
- School of Environmental and Chemical Engineering, Foshan University, Foshan, Guangdong, China
- School of Environmental and Resource Sciences, Zhejiang A&F University, Hangzhou, Zhejiang, China
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31
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Kohl L, Myers-Pigg A, Edwards KA, Billings SA, Warren J, Podrebarac FA, Ziegler SE. Microbial inputs at the litter layer translate climate into altered organic matter properties. GLOBAL CHANGE BIOLOGY 2021; 27:435-453. [PMID: 33112459 DOI: 10.1111/gcb.15420] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/27/2020] [Revised: 08/31/2020] [Accepted: 09/15/2020] [Indexed: 06/11/2023]
Abstract
Plant litter chemistry is altered during decomposition but it remains unknown if these alterations, and thus the composition of residual litter, will change in response to climate. Selective microbial mineralization of litter components and the accumulation of microbial necromass can drive litter compositional change, but the extent to which these mechanisms respond to climate remains poorly understood. We addressed this knowledge gap by studying needle litter decomposition along a boreal forest climate transect. Specifically, we investigated how the composition and/or metabolism of the decomposer community varies with climate, and if that variation is associated with distinct modifications of litter chemistry during decomposition. We analyzed the composition of microbial phospholipid fatty acids (PLFAs) in the litter layer and measured natural abundance δ13 CPLFA values as an integrated measure of microbial metabolisms. Changes in litter chemistry and δ13 C values were measured in litterbag experiments conducted at each transect site. A warmer climate was associated with higher litter nitrogen concentrations as well as altered microbial community structure (lower fungi:bacteria ratios) and microbial metabolism (higher δ13 CPLFA ). Litter in warmer transect regions accumulated less aliphatic-C (lipids, waxes) and retained more O-alkyl-C (carbohydrates), consistent with enhanced 13 C-enrichment in residual litter, than in colder regions. These results suggest that chemical changes during litter decomposition will change with climate, driven primarily by indirect climate effects (e.g., greater nitrogen availability and decreased fungi:bacteria ratios) rather than direct temperature effects. A positive correlation between microbial biomass δ13 C values and 13 C-enrichment during decomposition suggests that change in litter chemistry is driven more by distinct microbial necromass inputs than differences in the selective removal of litter components. Our study highlights the role that microbial inputs during early litter decomposition can play in shaping surface litter contribution to soil organic matter as it responds to climate warming effects such as greater nitrogen availability.
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Affiliation(s)
- Lukas Kohl
- Department of Earth Sciences, Memorial University, St. John's, NL, Canada
- Department of Agricultural Sciences, Helsinki University, Helsinki, Finland
- Institute for Atmospheric and Earth System Research/Forest Sciences, Faculty of Agriculture and Forestry, University of Helsinki, Helsinki, Finland
| | - Allison Myers-Pigg
- Department of Earth Sciences, Memorial University, St. John's, NL, Canada
| | - Kate A Edwards
- Natural Resources Canada, Canadian Forest Service, Atlantic Forestry Centre, Corner Brook, NL, Canada
| | - Sharon A Billings
- Department of Ecology and Evolutionary Biology, Kansas Biological Survey, University of Kansas, Lawrence, KS, USA
| | - Jamie Warren
- Department of Earth Sciences, Memorial University, St. John's, NL, Canada
| | | | - Susan E Ziegler
- Department of Earth Sciences, Memorial University, St. John's, NL, Canada
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32
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Meng Y, Hui D, Huangfu C. Site conditions interact with litter quality to affect home-field advantage and rhizosphere effect of litter decomposition in a subtropical wetland ecosystem. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 749:141442. [PMID: 32836120 DOI: 10.1016/j.scitotenv.2020.141442] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/23/2020] [Revised: 07/16/2020] [Accepted: 07/31/2020] [Indexed: 06/11/2023]
Abstract
The home-field advantage (HFA) hypothesis predicts that plant litter would decompose more quickly beneath its own plant species in the soil than beneath other plant species. Theoretically, HFA can be induced by the rhizosphere of growing plants, due to so-called rhizosphere effect (RE). Despite growing evidence for the site condition-dependence of both effects, few work has be conducted to explore how site climate, vegetation type and soil properties interact to affect RE and HFA, and especially limited in situ representation from subtropical wetland systems. In a field experiment, we reciprocally incubated three root litter species (Rumex dentatus L., Carex thunbergii Steud., and Polygonum cripolitanum Hance) along a hydroperiod gradient in a subtropical wetland, which differed mainly with respect to vegetation and soil microclimate, with and without growing plants. The occurrence and magnitude of HFA and RE were mainly determined by litter quality and were stage-specific. Collectively, we detected significant HFA with chemically-recalcitrant litter from C. thunbergii and P. cripolitanum, but only at the first stage of decomposition. The presence of growing plants generally reduced litter decomposition, but the magnitude of the response was species-specific, with the positive effects detected only for root litters from C. thunbergii at the first stage of decomposition. In addition, we did not find a significant relationship between HFA and RE, indicating that plant species that produce litters exhibiting HFA may not accelerate litter decomposition via RE at same time. Structural equation models (SEM) revealed that site microclimate factors were conducive with soil properties in regulating C dynamics. Overall, soil microclimate in this wetland ecosystem was likely important in driving C cycling, either directly by changing environmental conditions, litter quality, and plant trait spectra, or indirectly by interrupting the interactions between litter and decomposers.
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Affiliation(s)
- Yingying Meng
- Anhui Province Key Laboratory of Wetland Ecosystem Protection and Restoration, School of Resources and Environmental Engineering, Anhui University, Hefei 230601, China
| | - Dafeng Hui
- Department of Biological Sciences, Tennessee State University, Nashville, TN 37209, USA
| | - Chaohe Huangfu
- Anhui Province Key Laboratory of Wetland Ecosystem Protection and Restoration, School of Resources and Environmental Engineering, Anhui University, Hefei 230601, China.
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Blesh J, Ying T. Soil fertility status controls the decomposition of litter mixture residues. Ecosphere 2020. [DOI: 10.1002/ecs2.3237] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022] Open
Affiliation(s)
- Jennifer Blesh
- School for Environment and Sustainability University of Michigan 440 Church Street Ann Arbor Michigan48109USA
| | - Tianyu Ying
- School for Environment and Sustainability University of Michigan 440 Church Street Ann Arbor Michigan48109USA
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34
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Ochoa-Hueso R, Borer ET, Seabloom EW, Hobbie SE, Risch AC, Collins SL, Alberti J, Bahamonde HA, Brown CS, Caldeira MC, Daleo P, Dickman CR, Ebeling A, Eisenhauer N, Esch EH, Eskelinen A, Fernández V, Güsewell S, Gutierrez-Larruga B, Hofmockel K, Laungani R, Lind E, López A, McCulley RL, Moore JL, Peri PL, Power SA, Price JN, Prober SM, Roscher C, Sarneel JM, Schütz M, Siebert J, Standish RJ, Velasco Ayuso S, Virtanen R, Wardle GM, Wiehl G, Yahdjian L, Zamin T. Microbial processing of plant remains is co-limited by multiple nutrients in global grasslands. GLOBAL CHANGE BIOLOGY 2020; 26:4572-4582. [PMID: 32520438 DOI: 10.1111/gcb.15146] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/28/2020] [Accepted: 03/19/2020] [Indexed: 06/11/2023]
Abstract
Microbial processing of aggregate-unprotected organic matter inputs is key for soil fertility, long-term ecosystem carbon and nutrient sequestration and sustainable agriculture. We investigated the effects of adding multiple nutrients (nitrogen, phosphorus and potassium plus nine essential macro- and micro-nutrients) on decomposition and biochemical transformation of standard plant materials buried in 21 grasslands from four continents. Addition of multiple nutrients weakly but consistently increased decomposition and biochemical transformation of plant remains during the peak-season, concurrent with changes in microbial exoenzymatic activity. Higher mean annual precipitation and lower mean annual temperature were the main climatic drivers of higher decomposition rates, while biochemical transformation of plant remains was negatively related to temperature of the wettest quarter. Nutrients enhanced decomposition most at cool, high rainfall sites, indicating that in a warmer and drier future fertilized grassland soils will have an even more limited potential for microbial processing of plant remains.
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Affiliation(s)
- Raúl Ochoa-Hueso
- Department of Biology, IVAGRO, University of Cádiz, Campus de Excelencia Internacional Agroalimentario (ceiA3), Cádiz, Spain
| | - Elizabeth T Borer
- Department of Ecology, Evolution and Behavior, University of Minnesota, St. Paul, MN, USA
| | - Eric W Seabloom
- Department of Ecology, Evolution and Behavior, University of Minnesota, St. Paul, MN, USA
| | - Sarah E Hobbie
- Department of Ecology, Evolution and Behavior, University of Minnesota, St. Paul, MN, USA
| | - Anita C Risch
- Swiss Federal Institute for Forest, Snow and Landscape Research WSL, Birmensdorf, Switzerland
| | - Scott L Collins
- Department of Biology, University of New Mexico, Albuquerque, NM, USA
| | - Juan Alberti
- Instituto de Investigaciones Marinas y Costeras (IIMyC), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Mar del Plata, Argentina
| | - Héctor A Bahamonde
- Instituto Nacional de Tecnología Agropecuaria (INTA), Universidad Nacional de la Patagonia Austral (UNPA)-CONICET, Rio Gallegos, Argentina
| | - Cynthia S Brown
- Graduate Degree Program in Ecology, Department of Agricultural Biology, Colorado State University, Fort Collins, CO, USA
| | - Maria C Caldeira
- Centro de Estudos Florestais, Instituto Superior de Agronomia, Universidade de Lisboa, Lisbon, Portugal
| | - Pedro Daleo
- Instituto de Investigaciones Marinas y Costeras (IIMyC), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Mar del Plata, Argentina
| | - Chris R Dickman
- Desert Ecology Research Group, School of Life and Environmental Sciences, The University of Sydney, Sydney, NSW, Australia
| | - Anne Ebeling
- Institute of Ecology and Evolution, Friedrich-Schiller-University Jena, Jena, Germany
| | - Nico Eisenhauer
- German Centre for Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig, Leipzig, Germany
- Institute of Biology, Leipzig University, Leipzig, Germany
| | - Ellen H Esch
- Department of Integrative Biology, University of Guelph, Guelph, ON, Canada
| | - Anu Eskelinen
- German Centre for Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig, Leipzig, Germany
- Department of Physiological Diversity, Helmholtz Center for Environmental Research - UFZ, Leipzig, Germany
- Ecology and Genetics, University of Oulu, Oulu, Finland
| | - Victoria Fernández
- Forest Genetics and Ecophysiology Research Group, School of Forest Engineering, Technical University of Madrid, Madrid, Spain
| | - Sabine Güsewell
- Institute of Integrative Biology, ETH Zurich, Zürich, Switzerland
| | | | - Kirsten Hofmockel
- Ecology, Evolution and Organismal Biology, Iowa State University, Ames, IA, USA
- Environmental and Biological Sciences Division, Pacific Northwest National Laboratory, Richland, WA, USA
| | | | - Eric Lind
- Department of Ecology, Evolution and Behavior, University of Minnesota, St. Paul, MN, USA
| | - Andrea López
- Department of Biology, University of New Mexico, Albuquerque, NM, USA
| | - Rebecca L McCulley
- Department of Plant & Soil Sciences, University of Kentucky, Lexington, KY, USA
| | - Joslin L Moore
- School of Biological Sciences, Monash University, Clayton Campus, Vic., Australia
| | - Pablo L Peri
- Instituto Nacional de Tecnología Agropecuaria (INTA), Universidad Nacional de la Patagonia Austral (UNPA)-CONICET, Rio Gallegos, Argentina
| | - Sally A Power
- Hawkesbury Institute for the Environment, Western Sydney University, Penrith, NSW, Australia
| | - Jodi N Price
- Institute of Land, Water and Society, Charles Sturt University, Albury, NSW, Australia
| | | | - Christiane Roscher
- German Centre for Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig, Leipzig, Germany
- Ecology and Genetics, University of Oulu, Oulu, Finland
| | - Judith M Sarneel
- Department of Ecology and Environmental Science, Umeå University, Umeå, Sweden
| | - Martin Schütz
- Swiss Federal Institute for Forest, Snow and Landscape Research WSL, Birmensdorf, Switzerland
| | - Julia Siebert
- German Centre for Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig, Leipzig, Germany
- Institute of Biology, Leipzig University, Leipzig, Germany
| | - Rachel J Standish
- Environmental and Conservation Sciences, Murdoch University, Murdoch, WA, Australia
| | - Sergio Velasco Ayuso
- Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura (IFEVA), CONICET, Facultad de Agronomía, Universidad de Buenos Aires, Buenos Aires, Argentina
| | - Risto Virtanen
- German Centre for Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig, Leipzig, Germany
- Department of Physiological Diversity, Helmholtz Center for Environmental Research - UFZ, Leipzig, Germany
- Ecology and Genetics, University of Oulu, Oulu, Finland
| | - Glenda M Wardle
- Desert Ecology Research Group, School of Life and Environmental Sciences, The University of Sydney, Sydney, NSW, Australia
| | - Georg Wiehl
- CSIRO Land and Water, Wembley, WA, Australia
| | - Laura Yahdjian
- Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura (IFEVA), CONICET, Facultad de Agronomía, Universidad de Buenos Aires, Buenos Aires, Argentina
| | - Tara Zamin
- School of Biological Sciences, Monash University, Clayton Campus, Vic., Australia
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Kou L, Jiang L, Hättenschwiler S, Zhang M, Niu S, Fu X, Dai X, Yan H, Li S, Wang H. Diversity-decomposition relationships in forests worldwide. eLife 2020; 9:e55813. [PMID: 32589142 PMCID: PMC7402676 DOI: 10.7554/elife.55813] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2020] [Accepted: 06/20/2020] [Indexed: 01/22/2023] Open
Abstract
Plant species diversity affects carbon and nutrient cycling during litter decomposition, yet the generality of the direction of this effect and its magnitude remains uncertain. With a meta-analysis including 65 field studies across the Earth's major forest ecosystems, we show here that decomposition was faster when litter was composed of more than one species. These positive biodiversity effects were mostly driven by temperate forests but were more variable in other forests. Litter mixture effects emerged most strongly in early decomposition stages and were related to divergence in litter quality. Litter diversity also accelerated nitrogen, but not phosphorus release, potentially indicating a decoupling of nitrogen and phosphorus cycling and perhaps a shift in ecosystem nutrient limitation with changing biodiversity. Our findings demonstrate the importance of litter diversity effects for carbon and nutrient dynamics during decomposition, and show how these effects vary with litter traits, decomposer complexity and forest characteristics.
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Affiliation(s)
- Liang Kou
- Qianyanzhou Ecological Research Station, Key Laboratory of Ecosystem Network Observation and Modeling, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of SciencesBeijingChina
- College of Resources and Environment, University of Chinese Academy of SciencesBeijingChina
| | - Lei Jiang
- Qianyanzhou Ecological Research Station, Key Laboratory of Ecosystem Network Observation and Modeling, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of SciencesBeijingChina
- College of Resources and Environment, University of Chinese Academy of SciencesBeijingChina
| | | | - Miaomiao Zhang
- State Key Laboratory of Tree Genetics and Breeding, Key Laboratory of Tree Breeding and Cultivation of State Forestry Administration, Research Institute of Forestry, Chinese Academy of ForestryBeijingChina
| | - Shuli Niu
- Qianyanzhou Ecological Research Station, Key Laboratory of Ecosystem Network Observation and Modeling, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of SciencesBeijingChina
- College of Resources and Environment, University of Chinese Academy of SciencesBeijingChina
| | - Xiaoli Fu
- Qianyanzhou Ecological Research Station, Key Laboratory of Ecosystem Network Observation and Modeling, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of SciencesBeijingChina
- College of Resources and Environment, University of Chinese Academy of SciencesBeijingChina
| | - Xiaoqin Dai
- Qianyanzhou Ecological Research Station, Key Laboratory of Ecosystem Network Observation and Modeling, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of SciencesBeijingChina
- College of Resources and Environment, University of Chinese Academy of SciencesBeijingChina
| | - Han Yan
- Qianyanzhou Ecological Research Station, Key Laboratory of Ecosystem Network Observation and Modeling, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of SciencesBeijingChina
- College of Resources and Environment, University of Chinese Academy of SciencesBeijingChina
| | - Shenggong Li
- Qianyanzhou Ecological Research Station, Key Laboratory of Ecosystem Network Observation and Modeling, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of SciencesBeijingChina
- College of Resources and Environment, University of Chinese Academy of SciencesBeijingChina
| | - Huimin Wang
- Qianyanzhou Ecological Research Station, Key Laboratory of Ecosystem Network Observation and Modeling, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of SciencesBeijingChina
- College of Resources and Environment, University of Chinese Academy of SciencesBeijingChina
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36
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Isotopic and compositional evidence for carbon and nitrogen dynamics during wood decomposition by saprotrophic fungi. FUNGAL ECOL 2020. [DOI: 10.1016/j.funeco.2020.100915] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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37
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Ryan ME, Schreiner KM, Swenson JT, Gagne J, Kennedy PG. Rapid changes in the chemical composition of degrading ectomycorrhizal fungal necromass. FUNGAL ECOL 2020. [DOI: 10.1016/j.funeco.2020.100922] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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38
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Zhang X, Xie J. The differential effects of endogenous cathepsin and microorganisms on changes in the texture and flavor substances of grouper ( Epinephelus coioides) fillets. RSC Adv 2020; 10:10764-10775. [PMID: 35492946 PMCID: PMC9050448 DOI: 10.1039/d0ra01028f] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2020] [Accepted: 02/28/2020] [Indexed: 11/21/2022] Open
Abstract
Grouper is an important seafood species in China and has high economic value. However, the edible value of grouper is seriously affected by deterioration in the texture and flavor during refrigeration. The purpose of this study was to investigate the effects of endogenous cathepsin and microorganisms on texture softening and flavor changes in refrigerated grouper fillets. Iodoacetic acid and ProClin 300 were used to inhibit endogenous protease activity and microbial growth separately. Iodoacetic acid can inhibit the activity of cathepsin B, L, and calpain. Moreover, iodoacetic acid does not significantly affect the growth of microorganisms. The total amounts of bacteria and Pseudomonas spp. in the samples treated with ProClin 300 were less than 2 log CFU g−1 and 1 log CFU g−1 on the 18th day, and the activity of protease was not significantly affected. On the 6th day, the hardness of the iodoacetic acid treatment group decreased by 8%, while the ProClin 300 treatment group decreased by 28%, and changes in the free amino acids and volatile substances significantly exceeded those of the iodoacetic acid treatment group, indicating that endogenous protease was the main factor in the texture deterioration. A first-order exponential decay model indicated that cathepsin L was the most important protease for reducing the hardness of grouper fillets, and changes in the content of free amino acids and volatile substances indicated that microorganisms played a more important role in the deterioration of flavor substances compared to that played by endogenous protease. This study reveals the different effects of endogenous proteases and microorganisms on the texture and flavor of grouper muscles.![]()
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Affiliation(s)
- Xicai Zhang
- College of Food Science & Technology, Shanghai Ocean University Shanghai 201306 China +86 2161900391.,Shanghai Engineering Research Center of Aquatic Product Processing and Preservation Shanghai 201306 China.,Shanghai Professional Technology Service Platform on Cold Chain Equipment Performance and Energy Saving Evaluation Shanghai 201306 China.,National Experimental Teaching Demonstration Center for Food Science and Engineering, Shanghai Ocean University Shanghai 201306 China.,Jingchu University of Technology Jingmen 448000 China
| | - Jing Xie
- College of Food Science & Technology, Shanghai Ocean University Shanghai 201306 China +86 2161900391.,Shanghai Engineering Research Center of Aquatic Product Processing and Preservation Shanghai 201306 China.,Shanghai Professional Technology Service Platform on Cold Chain Equipment Performance and Energy Saving Evaluation Shanghai 201306 China.,National Experimental Teaching Demonstration Center for Food Science and Engineering, Shanghai Ocean University Shanghai 201306 China
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39
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Hu Z, Chen X, Yao J, Zhu C, Zhu J, Liu M. Plant-mediated effects of elevated CO 2 and rice cultivars on soil carbon dynamics in a paddy soil. THE NEW PHYTOLOGIST 2020; 225:2368-2379. [PMID: 31667850 DOI: 10.1111/nph.16298] [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: 09/02/2019] [Accepted: 10/22/2019] [Indexed: 06/10/2023]
Abstract
Soil organic carbon (SOC) sequestration under elevated CO2 concentration (eCO2 ) is a function of carbon (C) input and C retention. Nitrogen (N) limitation in natural ecosystems can constrain plant responses to eCO2 and their subsequent effects on SOC, but the effect of eCO2 on SOC in N-enriched agroecosystems with cultivars highly responsive to eCO2 is largely unknown. We reported results of SOC dynamics from a field free-air CO2 enrichment experiment with two rice cultivars having distinct photosynthetic capacities under eCO2 . A reciprocal incubation experiment was further conducted to disentangle the effect of changes in litter quality and soil microbial community on litter-derived C dynamics. eCO2 significantly increased total SOC content, dissolved organic C and particulate organic C under the strongly responsive cultivar, likely due to enhanced organic C inputs originated from CO2 stimulation of shoot and root biomass. Increases in the residue C : N ratio and fungal abundance induced by eCO2 under the strongly responsive cultivar reduced C losses from decomposition, possibly through increasing microbial C use efficiency. Our findings suggest that applications of high-yielding cultivars may substantially enhance soil C sequestration in rice paddies under future CO2 scenarios.
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Affiliation(s)
- Zhengkun Hu
- Soil Ecology Lab, College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing, 210095, China
- Jiangsu Key Laboratory for Solid Organic Waste Resource Utilization, Collaborative Innovation Center for Solid Organic Waste Resource Utilization, Nanjing, 210014, China
| | - Xiaoyun Chen
- Soil Ecology Lab, College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing, 210095, China
- Jiangsu Key Laboratory for Solid Organic Waste Resource Utilization, Collaborative Innovation Center for Solid Organic Waste Resource Utilization, Nanjing, 210014, China
| | - Junneng Yao
- Soil Ecology Lab, College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing, 210095, China
- Jiangsu Key Laboratory for Solid Organic Waste Resource Utilization, Collaborative Innovation Center for Solid Organic Waste Resource Utilization, Nanjing, 210014, China
| | - Chunwu Zhu
- State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, 210008, China
| | - Jianguo Zhu
- State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, 210008, China
| | - Manqiang Liu
- Soil Ecology Lab, College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing, 210095, China
- Jiangsu Key Laboratory for Solid Organic Waste Resource Utilization, Collaborative Innovation Center for Solid Organic Waste Resource Utilization, Nanjing, 210014, China
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40
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Bonner MTL, Allen DE, Brackin R, Smith TE, Lewis T, Shoo LP, Schmidt S. Tropical Rainforest Restoration Plantations Are Slow to Restore the Soil Biological and Organic Carbon Characteristics of Old Growth Rainforest. MICROBIAL ECOLOGY 2020; 79:432-442. [PMID: 31372686 PMCID: PMC7033081 DOI: 10.1007/s00248-019-01414-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/05/2018] [Accepted: 07/11/2019] [Indexed: 06/10/2023]
Abstract
Widespread and continuing losses of tropical old-growth forests imperil global biodiversity and alter global carbon (C) cycling. Soil organic carbon (SOC) typically declines with land use change from old-growth forest, but the underlying mechanisms are poorly understood. Ecological restoration plantations offer an established means of restoring aboveground biomass, structure and diversity of forests, but their capacity to recover the soil microbial community and SOC is unknown due to limited empirical data and consensus on the mechanisms of SOC formation. Here, we examine soil microbial community response and SOC in tropical rainforest restoration plantings, comparing them with the original old-growth forest and the previous land use (pasture). Two decades post-reforestation, we found a statistically significant but small increase in SOC in the fast-turnover particulate C fraction. Although the δ13C signature of the more stable humic organic C (HOC) fraction indicated a significant compositional turnover in reforested soils, from C4 pasture-derived C to C3 forest-derived C, this did not translate to HOC gains compared with the pasture baseline. Matched old-growth rainforest soils had significantly higher concentrations of HOC than pasture and reforested soils, and soil microbial enzyme efficiency and the ratio of gram-positive to gram-negative bacteria followed the same pattern. Restoration plantings had unique soil microbial composition and function, distinct from baseline pasture but not converging on target old growth rainforest within the examined timeframe. Our results suggest that tropical reforestation efforts could benefit from management interventions beyond re-establishing tree cover to realize the ambition of early recovery of soil microbial communities and stable SOC.
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Affiliation(s)
- Mark T L Bonner
- School of Agriculture and Food Science, University of Queensland, Brisbane, Queensland, 4072, Australia.
- Department of Forest Ecology and Management, Swedish University of Agricultural Sciences, 90736, Umeå, Sweden.
| | - Diane E Allen
- School of Agriculture and Food Science, University of Queensland, Brisbane, Queensland, 4072, Australia
- Department of Environment and Science, Brisbane, Queensland, 4001, Australia
| | - Richard Brackin
- School of Agriculture and Food Science, University of Queensland, Brisbane, Queensland, 4072, Australia
| | - Tim E Smith
- Department of Agriculture and Fisheries, Queensland Government, University of the Sunshine Coast, Sippy Downs, 4556, Australia
- Faculty of Science, Health, Education and Engineering, University of the Sunshine Coast, Sippy Downs, 4556, Australia
| | - Tom Lewis
- Department of Agriculture and Fisheries, Queensland Government, University of the Sunshine Coast, Sippy Downs, 4556, Australia
- Faculty of Science, Health, Education and Engineering, University of the Sunshine Coast, Sippy Downs, 4556, Australia
| | - Luke P Shoo
- School of Biological Sciences, University of Queensland, Brisbane, Queensland, 4072, Australia
| | - Susanne Schmidt
- School of Agriculture and Food Science, University of Queensland, Brisbane, Queensland, 4072, Australia
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41
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Zhang X, Gao G, Wu Z, Wen X, Zhong H, Zhong Z, Yang C, Bian F, Gai X. Responses of soil nutrients and microbial communities to intercropping medicinal plants in moso bamboo plantations in subtropical China. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2020; 27:2301-2310. [PMID: 31776906 DOI: 10.1007/s11356-019-06750-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/18/2019] [Accepted: 10/11/2019] [Indexed: 06/10/2023]
Abstract
Bamboo forests are one of the most important forest resources in subtropical China. A pure, single-layer bamboo forest is considered an optimal habitat for intercropping medicinal herbs. Soil microorganisms have an important role in various ecological processes and respond quickly to environmental changes. However, changes in soil nutrients and microbial communities associated with agroforestry cultivation methods remain poorly documented. In the present study, a pure moso bamboo (Phyllostachys edulis) forest (Con) and three adjacent moso bamboo-based agroforestry (BAF) systems (moso bamboo-Paris polyphylla (BP), moso bamboo-Tetrastigma hemsleyanum (BT) and moso bamboo-Bletilla striata (BB)) were selected; and their soil chemical properties and bacterial communities were studied and compared to evaluate the effects of agroforestry on soil bacterial communities and the relationship between soil properties and bacterial communities in BAF systems. Results showed that compared with soils under the Con, soils under the BAF systems had more (p < 0.05) soil organic carbon (SOC) and available nitrogen (AN) but lower (p < 0.05) pH and available potassium (AK). In addition, compared with the Con system, the BB and BT systems had significantly greater (p < 0.05) available phosphorus (AP). Compared with that in the Con system, the Shannon index in the BAF systems was significantly greater (p < 0.05), but the Chao1 index not different. On the basis of relative abundance values, compared with the Con soils, the BAF soils had a significantly greater abundance of (p < 0.05) Bacteroidetes and Planctomyces but a significantly lower abundance of (p < 0.05) Verrucomicrobia, Gemmatimonadetes and Candidatus Xiphinematobacter. Moreover, compared with the Con system, the BB and BT systems had a greater (p < 0.05) abundance of Actinobacteria, Rhodoplanes, Candidatus Solibacter and Candidatus Koribacter. Redundancy analysis (RDA) revealed that soil pH, SOC and AP were significantly correlated with bacterial community composition. Results of this study suggest that intercropping medicinal herbs can result in soil acidification and potassium (K) depletion; thus, countermeasures such as applications of K fertilizer and alkaline soil amendments are necessary for BAF systems.
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Affiliation(s)
- Xiaoping Zhang
- Key Laboratory of Resources and Utilization of Bamboo of State Forestry Administration, China National Bamboo Research Center, Wenyi Road 310, Hangzhou, 310012, China
- National Long-Term Observation and Research Station for Forest Ecosystem in Hangzhou-Jiaxing-Huzhou Plain, Zhejiang, Hangzhou, 310012, Zhejiang, People's Republic of China
| | - Guibin Gao
- Key Laboratory of Resources and Utilization of Bamboo of State Forestry Administration, China National Bamboo Research Center, Wenyi Road 310, Hangzhou, 310012, China
- National Long-Term Observation and Research Station for Forest Ecosystem in Hangzhou-Jiaxing-Huzhou Plain, Zhejiang, Hangzhou, 310012, Zhejiang, People's Republic of China
| | - Zhizhuang Wu
- Key Laboratory of Resources and Utilization of Bamboo of State Forestry Administration, China National Bamboo Research Center, Wenyi Road 310, Hangzhou, 310012, China.
- National Long-Term Observation and Research Station for Forest Ecosystem in Hangzhou-Jiaxing-Huzhou Plain, Zhejiang, Hangzhou, 310012, Zhejiang, People's Republic of China.
| | - Xing Wen
- Key Laboratory of Resources and Utilization of Bamboo of State Forestry Administration, China National Bamboo Research Center, Wenyi Road 310, Hangzhou, 310012, China
- National Long-Term Observation and Research Station for Forest Ecosystem in Hangzhou-Jiaxing-Huzhou Plain, Zhejiang, Hangzhou, 310012, Zhejiang, People's Republic of China
| | - Hao Zhong
- Key Laboratory of Resources and Utilization of Bamboo of State Forestry Administration, China National Bamboo Research Center, Wenyi Road 310, Hangzhou, 310012, China
- National Long-Term Observation and Research Station for Forest Ecosystem in Hangzhou-Jiaxing-Huzhou Plain, Zhejiang, Hangzhou, 310012, Zhejiang, People's Republic of China
| | - Zhezhe Zhong
- Key Laboratory of Resources and Utilization of Bamboo of State Forestry Administration, China National Bamboo Research Center, Wenyi Road 310, Hangzhou, 310012, China
- National Long-Term Observation and Research Station for Forest Ecosystem in Hangzhou-Jiaxing-Huzhou Plain, Zhejiang, Hangzhou, 310012, Zhejiang, People's Republic of China
| | - Chuanbao Yang
- Key Laboratory of Resources and Utilization of Bamboo of State Forestry Administration, China National Bamboo Research Center, Wenyi Road 310, Hangzhou, 310012, China
- National Long-Term Observation and Research Station for Forest Ecosystem in Hangzhou-Jiaxing-Huzhou Plain, Zhejiang, Hangzhou, 310012, Zhejiang, People's Republic of China
| | - Fangyuan Bian
- Key Laboratory of Resources and Utilization of Bamboo of State Forestry Administration, China National Bamboo Research Center, Wenyi Road 310, Hangzhou, 310012, China
- National Long-Term Observation and Research Station for Forest Ecosystem in Hangzhou-Jiaxing-Huzhou Plain, Zhejiang, Hangzhou, 310012, Zhejiang, People's Republic of China
| | - Xu Gai
- Key Laboratory of Resources and Utilization of Bamboo of State Forestry Administration, China National Bamboo Research Center, Wenyi Road 310, Hangzhou, 310012, China
- National Long-Term Observation and Research Station for Forest Ecosystem in Hangzhou-Jiaxing-Huzhou Plain, Zhejiang, Hangzhou, 310012, Zhejiang, People's Republic of China
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Menichetti L, Ågren GI, Barré P, Moyano F, Kätterer T. Generic parameters of first-order kinetics accurately describe soil organic matter decay in bare fallow soils over a wide edaphic and climatic range. Sci Rep 2019; 9:20319. [PMID: 31889048 PMCID: PMC6937324 DOI: 10.1038/s41598-019-55058-1] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2018] [Accepted: 11/19/2019] [Indexed: 12/17/2022] Open
Abstract
The conventional soil organic matter (SOM) decay paradigm considers the intrinsic quality of SOM as the dominant decay limitation with the result that it is modelled using simple first-order decay kinetics. This view and modelling approach is often criticized for being too simplistic and unreliable for predictive purposes. It is still under debate if first-order models can correctly capture the variability in temporal SOM decay observed between different agroecosystems and climates. To address this question, we calibrated a first-order model (Q) on six long-term bare fallow field experiments across Europe. Following conventional SOM decay theory, we assumed that parameters directly describing SOC decay (rate of SOM quality change and decomposer metabolism) are thermodynamically constrained and therefore valid for all sites. Initial litter input quality and edaphic interactions (both local by definition) and microbial efficiency (possibly affected by nutrient stoichiometry) were instead considered site-specific. Initial litter input quality explained most observed kinetics variability, and the model predicted a convergence toward a common kinetics over time. Site-specific variables played no detectable role. The decay of decades-old SOM seemed mostly influenced by OM chemistry and was well described by first order kinetics and a single set of general kinetics parameters.
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Affiliation(s)
- Lorenzo Menichetti
- Department of Ecology, Swedish University of Agricultural Sciences (SLU), Box 7044, 75007, Uppsala, Sweden.
| | - Göran I Ågren
- Department of Ecology, Swedish University of Agricultural Sciences (SLU), Box 7044, 75007, Uppsala, Sweden
| | - Pierre Barré
- Laboratoire de Geólogie de l'ENS, PSL Research University - CNRS UMR8538, 75005, Paris, France
| | - Fernando Moyano
- Georg-August Universität Göttingen, Büsgenweg 2, 37077, Göttingen, Germany
| | - Thomas Kätterer
- Department of Ecology, Swedish University of Agricultural Sciences (SLU), Box 7044, 75007, Uppsala, Sweden
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43
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Agricultural Practices and Hydrologic Conditions Shape the Temporal Pattern of Soil and Stream Water Dissolved Organic Matter. Ecosystems 2019. [DOI: 10.1007/s10021-019-00471-w] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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44
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Guo C, Cornelissen JHC, Tuo B, Ci H, Yan E. Invertebrate phenology modulates the effect of the leaf economics spectrum on litter decomposition rate across 41 subtropical woody plant species. Funct Ecol 2019. [DOI: 10.1111/1365-2435.13496] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Chao Guo
- Putuo Island Ecosystem Research Station, Zhejiang Tiantong Forest Ecosystem National Observation and Research Station, and Shanghai Key Lab for Urban Ecological Processes and Eco‐Restoration, School of Ecological and Environmental Sciences East China Normal University Shanghai China
- Institute of Eco‐Chongming (IEC) Shanghai China
| | - Johannes H. C. Cornelissen
- Systems Ecology Department of Ecological Science Faculty of Science Vrije Universiteit (VU University) Amsterdam The Netherlands
| | - Bin Tuo
- Putuo Island Ecosystem Research Station, Zhejiang Tiantong Forest Ecosystem National Observation and Research Station, and Shanghai Key Lab for Urban Ecological Processes and Eco‐Restoration, School of Ecological and Environmental Sciences East China Normal University Shanghai China
- Institute of Eco‐Chongming (IEC) Shanghai China
| | - Hang Ci
- Putuo Island Ecosystem Research Station, Zhejiang Tiantong Forest Ecosystem National Observation and Research Station, and Shanghai Key Lab for Urban Ecological Processes and Eco‐Restoration, School of Ecological and Environmental Sciences East China Normal University Shanghai China
- Institute of Eco‐Chongming (IEC) Shanghai China
| | - En‐Rong Yan
- Putuo Island Ecosystem Research Station, Zhejiang Tiantong Forest Ecosystem National Observation and Research Station, and Shanghai Key Lab for Urban Ecological Processes and Eco‐Restoration, School of Ecological and Environmental Sciences East China Normal University Shanghai China
- Institute of Eco‐Chongming (IEC) Shanghai China
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45
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Schiedung M, Tregurtha CS, Beare MH, Thomas SM, Don A. Deep soil flipping increases carbon stocks of New Zealand grasslands. GLOBAL CHANGE BIOLOGY 2019; 25:2296-2309. [PMID: 30737870 PMCID: PMC6850463 DOI: 10.1111/gcb.14588] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/22/2018] [Revised: 02/01/2019] [Accepted: 02/03/2019] [Indexed: 05/19/2023]
Abstract
Sequestration of soil organic carbon (SOC) has been recognized as an opportunity to off-set global carbon dioxide (CO2 ) emissions. Flipping (full inversion to 1-3 m) is a practice used on New Zealand's South Island West Coast to eliminate water-logging in highly podzolized sandy soils. Flipping results in burial of SOC formed in surface soil horizons into the subsoil and the transfer of subsoil material low in SOC to the "new" topsoil. The aims of this study were to quantify changes in the storage and stability of SOC over a 20-year period following flipping of high-productive pasture grassland. Topsoils (0-30 cm) from sites representing a chronosequence of flipping (3-20 years old) were sampled (2005/07) and re-sampled (2017) to assess changes in topsoil carbon stocks. Deeper samples (30-150 cm) were also collected (2017) to evaluate the changes in stocks of SOC previously buried by flipping. Density fractionation was used to determine SOC stability in recent and buried topsoils. Total SOC stocks (0-150 cm) increased significantly by 69 ± 15% (179 ± 40 Mg SOC ha-1 ) over 20 years following flipping. Topsoil burial caused a one-time sequestration of 160 ± 14 Mg SOC ha-1 (30-150 cm). The top 0-30 cm accumulated 3.6 Mg SOC ha-1 year-1 . The chronosequence and re-sampling revealed SOC accumulation rates of 1.2-1.8 Mg SOC ha-1 year-1 in the new surface soil (0-15 cm) and a SOC deficit of 36 ± 5% after 20 years. Flipped subsoils contained up to 32% labile SOC (compared to <1% in un-flipped subsoils) thus buried SOC was preserved. This study confirms that burial of SOC and the exposure of SOC depleted subsoil results in an overall increase of SOC stocks of the whole soil profile and long-term SOC preservation.
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Affiliation(s)
- Marcus Schiedung
- Thünen Institute of Climate‐Smart AgricultureBraunschweigGermany
| | - Craig S. Tregurtha
- New Zealand Institute for Plant and Food Research LimitedLincolnNew Zealand
| | - Michael H. Beare
- New Zealand Institute for Plant and Food Research LimitedLincolnNew Zealand
| | - Steve M. Thomas
- New Zealand Institute for Plant and Food Research LimitedLincolnNew Zealand
| | - Axel Don
- Thünen Institute of Climate‐Smart AgricultureBraunschweigGermany
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46
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Noll L, Zhang S, Zheng Q, Hu Y, Wanek W. Wide-spread limitation of soil organic nitrogen transformations by substrate availability and not by extracellular enzyme content. SOIL BIOLOGY & BIOCHEMISTRY 2019; 133:37-49. [PMID: 31579313 PMCID: PMC6774789 DOI: 10.1016/j.soilbio.2019.02.016] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/07/2023]
Abstract
Proteins constitute the single largest soil organic nitrogen (SON) reservoir and its decomposition drives terrestrial N availability. Protein cleavage by extracellular enzymes is the rate limiting step in the soil organic N cycle and can be controlled by extracellular enzyme production or protein availability/stabilization in soil. Both controls can be affected by geology and land use, as well as be vulnerable to changes in soil temperature and moisture/O2. To explore major controls of soil gross protein depolymerization we sampled six soils from two soil parent materials (calcareous and silicate), where each soil type included three land uses (cropland, pasture and forest). Soil samples were subjected to three temperature treatments (5, 15, 25 °C at 60% water-holding capacity (WHC) and aerobic conditions) or three soil moisture/O2 treatments (30 and 60% WHC at 21% O2, 90% WHC at 1% O2, at 20 °C) in short-term experiments. Samples were incubated for one day in the temperature experiment and for one week in the moisture/O2 experiment. Gross protein depolymerization rates were measured by a novel 15N isotope pool dilution approach. The low temperature sensitivity of gross protein depolymerization, the lack of relationship with protease activity and strong effects of soil texture and pH demonstrate that this process is constrained by organo-mineral associations and not by soil enzyme content. This also became apparent from the inverse effects in calcareous and silicate soils caused by water saturation/O2 limitation. We highlight that the specific soil mineralogy influenced the response of gross depolymerization rates to water saturation/O2 limitation, causing (I) increasing gross depolymerization rates due to release of adsorbed proteins by reductive dissolution of Fe- and Mn-oxyhydroxides in calcareous soils and (II) decreasing gross depolymerization rates due to mobilization of coagulating and toxic Al3+ compounds in silicate soils.
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Affiliation(s)
- Lisa Noll
- Division of Terrestrial Ecosystem Research, Department of Microbiology and Ecosystem Science, University of Vienna, Vienna, Austria
| | - Shasha Zhang
- Division of Terrestrial Ecosystem Research, Department of Microbiology and Ecosystem Science, University of Vienna, Vienna, Austria
| | - Qing Zheng
- Division of Terrestrial Ecosystem Research, Department of Microbiology and Ecosystem Science, University of Vienna, Vienna, Austria
| | - Yuntao Hu
- Division of Terrestrial Ecosystem Research, Department of Microbiology and Ecosystem Science, University of Vienna, Vienna, Austria
| | - Wolfgang Wanek
- Division of Terrestrial Ecosystem Research, Department of Microbiology and Ecosystem Science, University of Vienna, Vienna, Austria
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Stuble KL, Ma S, Liang J, Luo Y, Classen AT, Souza L. Long‐term impacts of warming drive decomposition and accelerate the turnover of labile, not recalcitrant, carbon. Ecosphere 2019. [DOI: 10.1002/ecs2.2715] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Affiliation(s)
- Katharine L. Stuble
- The Holden Arboretum Kirtland Ohio 44094 USA
- The Oklahoma Biological Survey Norman Oklahoma 73019 USA
| | - Shuang Ma
- Department of Biological Sciences Northern Arizona University Flagstaff Arizona 86011 USA
| | - Junyi Liang
- Department of Microbiology and Plant Biology University of Oklahoma Norman Ohio 73019 USA
| | - Yiqi Luo
- Department of Biological Sciences Northern Arizona University Flagstaff Arizona 86011 USA
- Department of Microbiology and Plant Biology University of Oklahoma Norman Ohio 73019 USA
| | - Aimée T. Classen
- Rubenstein School of Environment and Natural Resources University of Vermont Burlington Vermont 05405 USA
- The Gund Institute for Environment The University of Vermont Burlington Vermont 05405 USA
| | - Lara Souza
- The Oklahoma Biological Survey Norman Oklahoma 73019 USA
- Department of Microbiology and Plant Biology University of Oklahoma Norman Ohio 73019 USA
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48
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Qiao Y, Wang J, Liang G, Du Z, Zhou J, Zhu C, Huang K, Zhou X, Luo Y, Yan L, Xia J. Global variation of soil microbial carbon-use efficiency in relation to growth temperature and substrate supply. Sci Rep 2019; 9:5621. [PMID: 30948759 PMCID: PMC6449510 DOI: 10.1038/s41598-019-42145-6] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2018] [Accepted: 03/25/2019] [Indexed: 11/25/2022] Open
Abstract
Soil microbial carbon-use efficiency (CUE), which is defined as the ratio of growth over C uptake, is commonly assumed as a constant or estimated by a temperature-dependent function in current microbial-explicit soil carbon (C) models. The temperature-dependent function (i.e., CUE = CUE0 + m × (T − 20)) simulates the dynamic CUE based on the specific CUE at a given reference temperature (i.e., CUE0) and a temperature response coefficient (i.e., m). Here, based on 780 observations from 98 sites, we showed a divergent spatial distribution of the soil microbial CUE (0.5 ± 0.25; mean ± SD) at the global scale. Then, the key parameters CUE0 and m in the above equation were estimated as 0.475 and −0.016, respectively, based on the observations with the Markov chain Monte Carlo technique. We also found a strong dependence of microbial CUE on the type of C substrate. The multiple regression analysis showed that glucose influences the variation of measured CUE associated with the environmental factors. Overall, this study confirms the global divergence of soil microbial CUE and calls for the incorporation of C substrate beside temperature in estimating the microbial CUE in different biomes.
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Affiliation(s)
- Yang Qiao
- Zhejiang Tiantong Forest Ecosystem National Observation and Research Station, Center for Global Change and Ecological Forecasting, School of Ecological and Environmental Sciences, East China Normal University, Shanghai, 200062, China
| | - Jing Wang
- Zhejiang Tiantong Forest Ecosystem National Observation and Research Station, Center for Global Change and Ecological Forecasting, School of Ecological and Environmental Sciences, East China Normal University, Shanghai, 200062, China
| | - Guopeng Liang
- Center for Ecosystem Science and Society, Northern Arizona University, Arizona, Flagstaff, AZ, 86011, USA
| | - Zhenggang Du
- Zhejiang Tiantong Forest Ecosystem National Observation and Research Station, Center for Global Change and Ecological Forecasting, School of Ecological and Environmental Sciences, East China Normal University, Shanghai, 200062, China
| | - Jian Zhou
- Zhejiang Tiantong Forest Ecosystem National Observation and Research Station, Center for Global Change and Ecological Forecasting, School of Ecological and Environmental Sciences, East China Normal University, Shanghai, 200062, China
| | - Chen Zhu
- Zhejiang Tiantong Forest Ecosystem National Observation and Research Station, Center for Global Change and Ecological Forecasting, School of Ecological and Environmental Sciences, East China Normal University, Shanghai, 200062, China
| | - Kun Huang
- Zhejiang Tiantong Forest Ecosystem National Observation and Research Station, Center for Global Change and Ecological Forecasting, School of Ecological and Environmental Sciences, East China Normal University, Shanghai, 200062, China
| | - Xuhui Zhou
- Zhejiang Tiantong Forest Ecosystem National Observation and Research Station, Center for Global Change and Ecological Forecasting, School of Ecological and Environmental Sciences, East China Normal University, Shanghai, 200062, China
| | - Yiqi Luo
- Center for Ecosystem Science and Society, Northern Arizona University, Arizona, Flagstaff, AZ, 86011, USA
| | - Liming Yan
- Zhejiang Tiantong Forest Ecosystem National Observation and Research Station, Center for Global Change and Ecological Forecasting, School of Ecological and Environmental Sciences, East China Normal University, Shanghai, 200062, China.
| | - Jianyang Xia
- Zhejiang Tiantong Forest Ecosystem National Observation and Research Station, Center for Global Change and Ecological Forecasting, School of Ecological and Environmental Sciences, East China Normal University, Shanghai, 200062, China.
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49
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Olk DC, Bloom PR, Perdue EM, McKnight DM, Chen Y, Farenhorst A, Senesi N, Chin YP, Schmitt-Kopplin P, Hertkorn N, Harir M. Environmental and Agricultural Relevance of Humic Fractions Extracted by Alkali from Soils and Natural Waters. JOURNAL OF ENVIRONMENTAL QUALITY 2019; 48:217-232. [PMID: 30951132 DOI: 10.2134/jeq2019.02.0041] [Citation(s) in RCA: 56] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/19/2023]
Abstract
To study the structure and function of soil organic matter, soil scientists have performed alkali extractions for soil humic acid (HA) and fulvic acid (FA) fractions for more than 200 years. Over the last few decades aquatic scientists have used similar fractions of dissolved organic matter, extracted by resin adsorption followed by alkali desorption. Critics have claimed that alkali-extractable fractions are laboratory artifacts, hence unsuitable for studying natural organic matter structure and function in field conditions. In response, this review first addresses specific conceptual concerns about humic fractions. Then we discuss several case studies in which HA and FA were extracted from soils, waters, and organic materials to address meaningful problems across diverse research settings. Specifically, one case study demonstrated the importance of humic substances for understanding transport and bioavailability of persistent organic pollutants. An understanding of metal binding sites in FA and HA proved essential to accurately model metal ion behavior in soil and water. In landscape-based studies, pesticides were preferentially bound to HA, reducing their mobility. Compost maturity and acceptability of other organic waste for land application were well evaluated by properties of HA extracted from these materials. A young humic fraction helped understand N cycling in paddy rice ( L.) soils, leading to improved rice management. The HA and FA fractions accurately represent natural organic matter across multiple environments, source materials, and research objectives. Studying them can help resolve important scientific and practical issues.
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50
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Yue K, Yang W, Tan B, Peng Y, Huang C, Xu Z, Ni X, Yang Y, Zhou W, Zhang L, Wu F. Immobilization of heavy metals during aquatic and terrestrial litter decomposition in an alpine forest. CHEMOSPHERE 2019; 216:419-427. [PMID: 30384312 DOI: 10.1016/j.chemosphere.2018.10.169] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/28/2018] [Revised: 10/23/2018] [Accepted: 10/24/2018] [Indexed: 06/08/2023]
Abstract
Plant litter decomposition is an important pathway of heavy metal cycling in forested soil and watershed ecosystems globally, but is so far an overlooked aspects in the existing literature. To investigate the temporal dynamics of heavy metals in decomposing litter, we conducted a two-year field experiment using litterbag method across aquatic and terrestrial ecosystems in an alpine forest on the eastern Tibetan Plateau. Using multigroup comparisons of structural equation modeling with different litter mass-loss intervals, we assessed the direct and indirect effects of several biotic and abiotic factors on the release rates of lead (Pb), cadmium (Cd), and chromium (Cr). Results suggested that both the concentrations and amounts of Pb, Cd, and Cr increased during litter decomposition regardless of ecosystem type and litter species, showing an immobilization pattern. The release rates of Pb, Cd, or Cr shared a common hierarchy of drivers across aquatic and terrestrial ecosystems, with environmental factors and initial litter quality having both direct and indirect effects, and the effects of initial litter quality gained importance in the late decomposition stages. However, litter chemical dynamics and microbial diversity index have significant effects on release rates throughout the decomposition process. Our results are useful for better understanding heavy metal fluxes in aquatic and terrestrial ecosystems, and for predicting anthropogenic heavy metal pollution impacts on ecosystems. In addition, our results indicated that not only spatial but also temporal variability should be taken into consideration when addressing heavy metal dynamics accompanying litter decomposition process.
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Affiliation(s)
- Kai Yue
- Long-term Research Station of Alpine Forest Ecosystems, Provincial Key Laboratory of Ecological Forestry Engineering, Institute of Ecology and Forestry, Sichuan Agricultural University, 211 Huimin Road, Wenjiang District, Chengdu, 611130, Sichuan, China
| | - Wanqin Yang
- Long-term Research Station of Alpine Forest Ecosystems, Provincial Key Laboratory of Ecological Forestry Engineering, Institute of Ecology and Forestry, Sichuan Agricultural University, 211 Huimin Road, Wenjiang District, Chengdu, 611130, Sichuan, China
| | - Bo Tan
- Long-term Research Station of Alpine Forest Ecosystems, Provincial Key Laboratory of Ecological Forestry Engineering, Institute of Ecology and Forestry, Sichuan Agricultural University, 211 Huimin Road, Wenjiang District, Chengdu, 611130, Sichuan, China
| | - Yan Peng
- Department of Geosciences and Natural Resource Management, University of Copenhagen, Rolighedsvej 23, DK-1958, Frederiksberg C, Denmark
| | - Chunping Huang
- College of Life Science, Sichuan Normal University, No. 1819, 2nd Section of Chenglong Avenue, Longquanyi District, Chengdu 610101, China
| | - Zhenfeng Xu
- Long-term Research Station of Alpine Forest Ecosystems, Provincial Key Laboratory of Ecological Forestry Engineering, Institute of Ecology and Forestry, Sichuan Agricultural University, 211 Huimin Road, Wenjiang District, Chengdu, 611130, Sichuan, China
| | - Xiangyin Ni
- Long-term Research Station of Alpine Forest Ecosystems, Provincial Key Laboratory of Ecological Forestry Engineering, Institute of Ecology and Forestry, Sichuan Agricultural University, 211 Huimin Road, Wenjiang District, Chengdu, 611130, Sichuan, China
| | - Yun Yang
- School of Architecture, Chengdu College of Arts and Sciences, 278 Xuefu Avenue, Jintang County, Chengdu, 610401, China
| | - Wei Zhou
- College of Resources, Sichuan Agricultural University, 211 Huimin Road, Wenjiang District, Chengdu, 611130, China
| | - Li Zhang
- Long-term Research Station of Alpine Forest Ecosystems, Provincial Key Laboratory of Ecological Forestry Engineering, Institute of Ecology and Forestry, Sichuan Agricultural University, 211 Huimin Road, Wenjiang District, Chengdu, 611130, Sichuan, China
| | - Fuzhong Wu
- Long-term Research Station of Alpine Forest Ecosystems, Provincial Key Laboratory of Ecological Forestry Engineering, Institute of Ecology and Forestry, Sichuan Agricultural University, 211 Huimin Road, Wenjiang District, Chengdu, 611130, Sichuan, China.
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