1
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Song D, Liu S, Fan L, Yang J, Li H, Xia Y, Li Y. Nutrient stoichiometric and resorption characteristics of the petals of four common urban greening Rosaceae tree species. FRONTIERS IN PLANT SCIENCE 2023; 14:1201759. [PMID: 37396636 PMCID: PMC10308311 DOI: 10.3389/fpls.2023.1201759] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/07/2023] [Accepted: 05/23/2023] [Indexed: 07/04/2023]
Abstract
Objective Nutrient resorption efficiency and stoichiometric ratios are important strategies for understanding plants. The present study examined whether or not the nutrient resorption process of plant petals is similar to that of leaves and other vegetative organs, as well as the nutrient restriction status of the whole flowering process of plants in urban ecosystems. Methods Four Rosaceae tree species, Prunus yedoensis Matsum, Prunus serrulata var. lannesiana, Malus micromalus Makino, and Prunus cerasifera 'Atropurpurea', were selected as urban greening species to analyze the contents of C, N, P, and K elements in the petals and their stoichiometric ratios and nutrient resorption efficiencies. Results The results show interspecific differences in nutrient contents, stoichiometric ratios, and nutrient resorption efficiency of the fresh petals and petal litter of the four Rosaceae species. The nutrient resorption process was similar to that of the leaves before the petals fell. The nutrient contents of petals were higher than that of leaves at the global level, but the stoichiometric ratio and nutrient resorption efficiency of petals were lower. According to the "relative resorption hypothesis", N was limiting during the entire flowering period. The nutrient resorption efficiency of petals was positively correlated with nutrient variation. The correlation between the nutrient resorption efficiency of petals with nutrient content and stoichiometric ratio of petal litter was stronger. Conclusion The experimental results provide scientific basis and theoretical support for the selection, scientific maintenance and fertilization management of Rosaceae tree species in urban greening.
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Affiliation(s)
- Dan Song
- College of Landscape Architecture and Forestry, Qingdao Agricultural University, Qingdao, China
| | - Shuting Liu
- College of Landscape Architecture and Forestry, Qingdao Agricultural University, Qingdao, China
| | - Lide Fan
- College of Landscape Architecture and Forestry, Qingdao Agricultural University, Qingdao, China
| | - Jinyan Yang
- College of Landscape Architecture and Forestry, Qingdao Agricultural University, Qingdao, China
| | - Haifang Li
- College of Landscape Architecture and Forestry, Qingdao Agricultural University, Qingdao, China
- Academy of Dongying Efficient Agricultural Technology and Industry on Saline and Alkaline Land in Collaboration with Qingdao Agricultural University, Dongying, China
| | - Yujie Xia
- College of Landscape Architecture and Forestry, Qingdao Agricultural University, Qingdao, China
| | - Yuwu Li
- College of Landscape Architecture and Forestry, Qingdao Agricultural University, Qingdao, China
- Academy of Dongying Efficient Agricultural Technology and Industry on Saline and Alkaline Land in Collaboration with Qingdao Agricultural University, Dongying, China
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2
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Nitrogen and Phosphorus Uptake Stoichiometry Tracks Supply Ratio During 2-year Whole-Ecosystem Nutrient Additions. Ecosystems 2022. [DOI: 10.1007/s10021-022-00813-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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3
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Influence of N:P Ratio of Water on Ecological Stoichiometry of Vallisneria natans and Hydrilla verticillata. WATER 2022. [DOI: 10.3390/w14081263] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Eutrophication is one of the major threats to shallow lake ecosystems, because it causes large-scale degradation of submerged plants. N:P ratio is an important indicator to estimate nutrient supply to water bodies and guide the restoration of submerged plants. The massive input of N and P changes the structure of aquatic communities and ecological processes. However, the mechanism underlying the influence of changes in N and P content and the N:P ratio of a water body on the growth of submerged plants is still unclear. In this study, we simulated gradients of water N:P ratio in lakes in the middle-lower reaches of the Yangtze River using outdoor mesocosm experiments. Using established generalized linear models (GLM), the effects of total nitrogen (TN) content and N:P ratio of water, phytoplankton and periphytic algae biomass, and relative growth rate (RGR) of plants on the stoichiometric characteristics of two widely distributed submerged plants, Hydrilla verticillata and Vallisneria natans, were explored. The results reveal that changes in water nutrient content affected the C:N:P stoichiometry of submerged plants. In a middle-eutrophic state, the stoichiometric characteristics of C, N, and P in the submerged plants were not influenced by phytoplankton and periphytic algae. The P content of H. verticillata and V. natans was positively correlated with their relative growth rate (RGR). As TN and N:P ratio of water increased, their N content increased and C:N decreased. These results indicate that excessive N absorption by submerged plants and the consequent internal physiological injury and growth inhibition may be the important reasons for the degradation of submerged vegetation in the process of lake eutrophication.
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4
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Rodríguez‐Cardona BM, Wymore AS, Argerich A, Barnes RT, Bernal S, Brookshire ENJ, Coble AA, Dodds WK, Fazekas HM, Helton AM, Johnes PJ, Johnson SL, Jones JB, Kaushal SS, Kortelainen P, López‐Lloreda C, Spencer RGM, McDowell WH. Shifting stoichiometry: Long-term trends in stream-dissolved organic matter reveal altered C:N ratios due to history of atmospheric acid deposition. GLOBAL CHANGE BIOLOGY 2022; 28:98-114. [PMID: 34706120 PMCID: PMC9297910 DOI: 10.1111/gcb.15965] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/05/2021] [Accepted: 09/26/2021] [Indexed: 05/15/2023]
Abstract
Dissolved organic carbon (DOC) and nitrogen (DON) are important energy and nutrient sources for aquatic ecosystems. In many northern temperate, freshwater systems DOC has increased in the past 50 years. Less is known about how changes in DOC may vary across latitudes, and whether changes in DON track those of DOC. Here, we present long-term DOC and DON data from 74 streams distributed across seven sites in biomes ranging from the tropics to northern boreal forests with varying histories of atmospheric acid deposition. For each stream, we examined the temporal trends of DOC and DON concentrations and DOC:DON molar ratios. While some sites displayed consistent positive or negative trends in stream DOC and DON concentrations, changes in direction or magnitude were inconsistent at regional or local scales. DON trends did not always track those of DOC, though DOC:DON ratios increased over time for ~30% of streams. Our results indicate that the dissolved organic matter (DOM) pool is experiencing fundamental changes due to the recovery from atmospheric acid deposition. Changes in DOC:DON stoichiometry point to a shifting energy-nutrient balance in many aquatic ecosystems. Sustained changes in the character of DOM can have major implications for stream metabolism, biogeochemical processes, food webs, and drinking water quality (including disinfection by-products). Understanding regional and global variation in DOC and DON concentrations is important for developing realistic models and watershed management protocols to effectively target mitigation efforts aimed at bringing DOM flux and nutrient enrichment under control.
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Affiliation(s)
- Bianca M. Rodríguez‐Cardona
- Department of Natural Resources and the EnvironmentUniversity of New HampshireDurhamNew HampshireUSA
- Département des sciences biologiquesUniversité du Québec à MontréalMontréalQuébecCanada
| | - Adam S. Wymore
- Department of Natural Resources and the EnvironmentUniversity of New HampshireDurhamNew HampshireUSA
| | - Alba Argerich
- School of Natural ResourcesUniversity of MissouriColumbiaMissouriUSA
| | - Rebecca T. Barnes
- Environmental Studies ProgramColorado CollegeColorado SpringsColoradoUSA
| | - Susana Bernal
- Centre d’Estudis Avançats de Blanes (CEAB‐CSIC)BlanesSpain
| | - E. N. Jack Brookshire
- Department of Land Resources and Environmental SciencesMontana State UniversityBozemanMontanaUSA
| | - Ashley A. Coble
- National Council for Air and Stream Improvement, Inc.CorvallisOregonUSA
| | - Walter K. Dodds
- Division of BiologyKansas State UniversityManhattanKansasUSA
| | - Hannah M. Fazekas
- Department of Natural Resources and the EnvironmentUniversity of New HampshireDurhamNew HampshireUSA
| | - Ashley M. Helton
- Department of Natural Resources and the Environment, and the Center for Environmental Sciences and EngineeringUniversity of ConnecticutStorrsConnecticutUSA
| | - Penny J. Johnes
- School of Geographical SciencesUniversity of BristolBristolUK
| | - Sherri L. Johnson
- USDA Forest ServicePacific Northwest Research StationCorvallisOregonUSA
| | - Jeremy B. Jones
- Institute of Arctic Biology & Department of Biology and WildlifeUniversity of Alaska FairbanksFairbanksAlaskaUSA
| | - Sujay S. Kaushal
- Department of GeologyUniversity of MarylandCollege ParkMarylandUSA
| | | | - Carla López‐Lloreda
- Department of Natural Resources and the EnvironmentUniversity of New HampshireDurhamNew HampshireUSA
- Department of Biological SciencesVirginia Polytechnic Institute and State UniversityBlacksburgVirginiaUSA
| | - Robert G. M. Spencer
- Department of Earth, Ocean and Atmospheric SciencesFlorida State UniversityTallahasseeFloridaUSA
| | - William H. McDowell
- Department of Natural Resources and the EnvironmentUniversity of New HampshireDurhamNew HampshireUSA
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5
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Zhang T, Yu L. The Relationship between Government Information Supply and Public Information Demand in the Early Stage of COVID-19 in China-An Empirical Analysis. Healthcare (Basel) 2021; 10:77. [PMID: 35052242 PMCID: PMC8775904 DOI: 10.3390/healthcare10010077] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2021] [Revised: 12/26/2021] [Accepted: 12/27/2021] [Indexed: 12/18/2022] Open
Abstract
Accurate and effective government communication is essential for public health emergencies. To optimize the effectiveness of government crisis communication, this paper puts forward an analytical perspective of supply-demand matching based on the interaction between the government and the public. We investigate the stage characteristics and the topic evolutions of both government information supply and public information demand through combined statistical analysis, text mining, text coding and cluster analysis, using empirical data from the National Health Commission's WeChat in China. A quantitative measure reflecting the public demand for government information supply is proposed. Result indicates that the government has provided a large amount of high-intensity epidemic-related information, with six major topics being the medical team, government actions, scientific protection knowledge, epidemic situation, high-level deployment and global cooperation. The public's greatest information needs present different characteristics at different stages, with "scientific protection knowledge", "government actions" and "medical teams" being the most needed in the outbreak stage, the control stage and the stable stage, respectively. The subject of oversupply is "medical team", and the subject of short supply is "epidemic dynamics" and "science knowledge". This paper provides important theoretical and practical value for improving the effectiveness of government communication in public health crises.
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Affiliation(s)
- Tong Zhang
- School of Public Affairs, Zhejiang University, Hangzhou 310058, China;
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6
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Liu Y, Luo W, Mu G, Wu X, Su S, Zhang Z. C:N:P stoichiometric characteristics of the soil–vegetation system of three rare tree species growing on Mount Fanjing in Southwest China. Glob Ecol Conserv 2021. [DOI: 10.1016/j.gecco.2021.e01893] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022] Open
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7
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Beck M, Mondy CP, Danger M, Billoir E, Usseglio‐Polatera P. Extending the growth rate hypothesis to species development: Can stoichiometric traits help to explain the composition of macroinvertebrate communities? OIKOS 2021. [DOI: 10.1111/oik.08090] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Miriam Beck
- Univ. de Lorraine, CNRS, LIEC Metz France
- LTER‐‘Zone Atelier Moselle' Metz France
| | - Cédric P. Mondy
- Office Français de la Biodiversité, Direction Régionale d'Ile‐de‐France Vincennes France
| | - Michael Danger
- Univ. de Lorraine, CNRS, LIEC Metz France
- LTER‐‘Zone Atelier Moselle' Metz France
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8
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Junker JR, Cross WF, Benstead JP, Huryn AD, Hood JM, Nelson D, Gíslason GM, Ólafsson JS. Flow is more Important than Temperature in Driving Patterns of Organic Matter Storage and Stoichiometry in Stream Ecosystems. Ecosystems 2020. [DOI: 10.1007/s10021-020-00585-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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9
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Turk-Kubo KA, Connell P, Caron D, Hogan ME, Farnelid HM, Zehr JP. In Situ Diazotroph Population Dynamics Under Different Resource Ratios in the North Pacific Subtropical Gyre. Front Microbiol 2018; 9:1616. [PMID: 30090092 PMCID: PMC6068237 DOI: 10.3389/fmicb.2018.01616] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2018] [Accepted: 06/28/2018] [Indexed: 11/13/2022] Open
Abstract
Major advances in understanding the diversity, distribution, and activity of marine N2-fixing microorganisms (diazotrophs) have been made in the past decades, however, large gaps in knowledge remain about the environmental controls on growth and mortality rates. In order to measure diazotroph net growth rates and microzooplankton grazing rates on diazotrophs, nutrient perturbation experiments and dilution grazing experiments were conducted using free-floating in situ incubation arrays in the vicinity of Station ALOHA in March 2016. Net growth rates for targeted diazotroph taxa as well as Prochlorococcus, Synechococcus and photosynthetic picoeukaryotes were determined under high (H) and low (L) nitrate:phosphate (NP) ratio conditions at four depths in the photic zone (25, 45, 75, and 100 m) using quantitative PCR and flow cytometry. Changes in the prokaryote community composition in response to HNP and LNP treatments were characterized using 16S rRNA variable region tag sequencing. Microzooplankton grazing rates on diazotrophs were measured using a modified dilution technique at two depths in the photic zone (15 and 125 m). Net growth rates for most of the targeted diazotrophs after 48 h were not stimulated as expected by LNP conditions, rather enhanced growth rates were often measured in HNP treatments. Interestingly, net growth rates of the uncultivated prymnesiophyte symbiont UCYN-A1 were stimulated in HNP treatments at 75 and 100 m, suggesting that N used for growth was acquired through continuing to fix N2 in the presence of nitrate. Net growth rates for UCYN-A1, UCYN-C, Crocosphaera sp. (UCYN-B) and the diatom symbiont Richelia (associated with Rhizosolenia) were uniformly high at 45 m (up to 1.6 ± 0.5 d-1), implying that all were growing optimally at the onset of the experiment at that depth. Differences in microzooplankton grazing rates on UCYN-A1 and UCYN-C in 15 m waters indicate that the grazer assemblage preyed preferentially on UCYN-A1. Deeper in the water column (125 m), both diazotrophs were grazed at substantial rates, suggesting grazing pressure may increase with depth in the photic zone. Constraining in situ diazotroph growth and mortality rates are important steps for improving parameterization for diazotrophs in global ecosystem models.
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Affiliation(s)
- Kendra A. Turk-Kubo
- Department of Ocean Sciences, University of California, Santa Cruz, Santa Cruz, CA, United States
| | - Paige Connell
- Department of Biological Sciences, University of Southern California, Los Angeles, CA, United States
| | - David Caron
- Department of Biological Sciences, University of Southern California, Los Angeles, CA, United States
| | - Mary E. Hogan
- Department of Ocean Sciences, University of California, Santa Cruz, Santa Cruz, CA, United States
| | - Hanna M. Farnelid
- Department of Ocean Sciences, University of California, Santa Cruz, Santa Cruz, CA, United States
- Centre for Ecology and Evolution in Microbial Model Systems, Linnaeus University, Kalmar, Sweden
| | - Jonathan P. Zehr
- Department of Ocean Sciences, University of California, Santa Cruz, Santa Cruz, CA, United States
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10
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Browning TJ, Achterberg EP, Rapp I, Engel A, Bertrand EM, Tagliabue A, Moore CM. Nutrient co-limitation at the boundary of an oceanic gyre. Nature 2017; 551:242-246. [PMID: 29088696 DOI: 10.1038/nature24063] [Citation(s) in RCA: 64] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2017] [Accepted: 09/05/2017] [Indexed: 11/09/2022]
Abstract
Nutrient limitation of oceanic primary production exerts a fundamental control on marine food webs and the flux of carbon into the deep ocean. The extensive boundaries of the oligotrophic sub-tropical gyres collectively define the most extreme transition in ocean productivity, but little is known about nutrient limitation in these zones. Here we present the results of full-factorial nutrient amendment experiments conducted at the eastern boundary of the South Atlantic gyre. We find extensive regions in which the addition of nitrogen or iron individually resulted in no significant phytoplankton growth over 48 hours. However, the addition of both nitrogen and iron increased concentrations of chlorophyll a by up to approximately 40-fold, led to diatom proliferation, and reduced community diversity. Once nitrogen-iron co-limitation had been alleviated, the addition of cobalt or cobalt-containing vitamin B12 could further enhance chlorophyll a yields by up to threefold. Our results suggest that nitrogen-iron co-limitation is pervasive in the ocean, with other micronutrients also approaching co-deficiency. Such multi-nutrient limitations potentially increase phytoplankton community diversity.
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Affiliation(s)
- Thomas J Browning
- Marine Biogeochemistry Division, GEOMAR Helmholtz Centre for Ocean Research, Kiel 24148, Germany
| | - Eric P Achterberg
- Marine Biogeochemistry Division, GEOMAR Helmholtz Centre for Ocean Research, Kiel 24148, Germany
| | - Insa Rapp
- Marine Biogeochemistry Division, GEOMAR Helmholtz Centre for Ocean Research, Kiel 24148, Germany
| | - Anja Engel
- Marine Biogeochemistry Division, GEOMAR Helmholtz Centre for Ocean Research, Kiel 24148, Germany
| | - Erin M Bertrand
- Department of Biology, Dalhousie University, Halifax, Nova Scotia B3H 4R2, Canada
| | - Alessandro Tagliabue
- Department of Earth, Ocean and Ecological Sciences, School of Environmental Sciences, University of Liverpool, Liverpool L69 3GP, UK
| | - C Mark Moore
- Ocean and Earth Science, National Oceanography Centre Southampton, University of Southampton, Southampton SO14 3ZH, UK
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11
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Leroux SJ, Wal EV, Wiersma YF, Charron L, Ebel JD, Ellis NM, Hart C, Kissler E, Saunders PW, Moudrá L, Tanner AL, Yalcin S. Stoichiometric distribution models: ecological stoichiometry at the landscape extent. Ecol Lett 2017; 20:1495-1506. [DOI: 10.1111/ele.12859] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2017] [Accepted: 09/07/2017] [Indexed: 01/20/2023]
Affiliation(s)
- Shawn J. Leroux
- Department of Biology; Memorial University of Newfoundland; St. John's NL A1B 3X9 Canada
| | - Eric Vander Wal
- Department of Biology; Memorial University of Newfoundland; St. John's NL A1B 3X9 Canada
| | - Yolanda F. Wiersma
- Department of Biology; Memorial University of Newfoundland; St. John's NL A1B 3X9 Canada
| | - Louis Charron
- Department of Biology; Memorial University of Newfoundland; St. John's NL A1B 3X9 Canada
| | - Jonathan D. Ebel
- Department of Biology; Memorial University of Newfoundland; St. John's NL A1B 3X9 Canada
| | - Nichola M. Ellis
- Department of Biology; Memorial University of Newfoundland; St. John's NL A1B 3X9 Canada
| | - Christopher Hart
- Department of Biology; Memorial University of Newfoundland; St. John's NL A1B 3X9 Canada
| | - Emilie Kissler
- Department of Biology; Memorial University of Newfoundland; St. John's NL A1B 3X9 Canada
| | - Paul W. Saunders
- Department of Environment and Conservation, Wildlife Division; Government of Newfoundland and Labrador; Corner Brook NL A2H 7S1 Canada
| | - Lucie Moudrá
- Department of Applied Geoinformatics and Spatial Planning; Faculty of Environmental Sciences; Czech University of Life Sciences; Prague Czech Republic
| | - Amy L. Tanner
- Department of Biology; Memorial University of Newfoundland; St. John's NL A1B 3X9 Canada
| | - Semra Yalcin
- Department of Biology; Memorial University of Newfoundland; St. John's NL A1B 3X9 Canada
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12
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Teurlincx S, Velthuis M, Seroka D, Govaert L, van Donk E, Van de Waal DB, Declerck SAJ. Species sorting and stoichiometric plasticity control community C:P ratio of first-order aquatic consumers. Ecol Lett 2017; 20:751-760. [DOI: 10.1111/ele.12773] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2016] [Revised: 12/26/2016] [Accepted: 03/23/2017] [Indexed: 02/06/2023]
Affiliation(s)
- Sven Teurlincx
- Department of Aquatic Ecology; Netherlands Institute of Ecology (NIOO-KNAW); PO Box 50 6700 AB Wageningen The Netherlands
| | - Mandy Velthuis
- Department of Aquatic Ecology; Netherlands Institute of Ecology (NIOO-KNAW); PO Box 50 6700 AB Wageningen The Netherlands
| | - Dominika Seroka
- Department of Aquatic Ecology; Netherlands Institute of Ecology (NIOO-KNAW); PO Box 50 6700 AB Wageningen The Netherlands
- Department of Hydrobiology; Faculty of Biology; Adam Mickiewicz University; Umultowska 89; 61 - 614 Poznań Poland
| | - Lynn Govaert
- Laboratory of Aquatic Ecology, Evolution and Conservation; Charles Deberiotstraat 32; PO box 2439 3000 Leuven Belgium
| | - Ellen van Donk
- Department of Aquatic Ecology; Netherlands Institute of Ecology (NIOO-KNAW); PO Box 50 6700 AB Wageningen The Netherlands
- Institute of Environmental Biology; Department of Biology; Utrecht University; PO Box 800.84 3508 TB Utrecht The Netherlands
| | - Dedmer B. Van de Waal
- Department of Aquatic Ecology; Netherlands Institute of Ecology (NIOO-KNAW); PO Box 50 6700 AB Wageningen The Netherlands
| | - Steven A. J. Declerck
- Department of Aquatic Ecology; Netherlands Institute of Ecology (NIOO-KNAW); PO Box 50 6700 AB Wageningen The Netherlands
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13
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Koffel T, Daufresne T, Massol F, Klausmeier CA. Geometrical envelopes: Extending graphical contemporary niche theory to communities and eco-evolutionary dynamics. J Theor Biol 2016; 407:271-289. [PMID: 27473767 DOI: 10.1016/j.jtbi.2016.07.026] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2016] [Revised: 07/10/2016] [Accepted: 07/20/2016] [Indexed: 01/09/2023]
Abstract
Contemporary niche theory is a powerful structuring framework in theoretical ecology. First developed in the context of resource competition, it has been extended to encompass other types of regulating factors such as shared predators, parasites or inhibitors. A central component of contemporary niche theory is a graphical approach popularized by Tilman that illustrates the different outcomes of competition along environmental gradients, like coexistence and competitive exclusion. These food web modules have been used to address species sorting in community ecology, as well as adaptation and coexistence on eco-evolutionary time scales in adaptive dynamics. Yet, the associated graphical approach has been underused so far in the evolutionary context. In this paper, we provide a rigorous approach to extend this graphical method to a continuum of interacting strategies, using the geometrical concept of the envelope. Not only does this approach provide community and eco-evolutionary bifurcation diagrams along environmental gradients, it also sheds light on the similarities and differences between those two perspectives. Adaptive dynamics naturally merges with this ecological framework, with a close correspondence between the classification of singular strategies and the geometrical properties of the envelope. Finally, this approach provides an integrative tool to study adaptation between levels of organization, from the individual to the ecosystem.
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Affiliation(s)
- Thomas Koffel
- UMR Eco&Sols, Campus Supagro, 2 place Viala, 34060 Montpellier, France; Kellogg Biological Station, Dept. of Plant Biology, & Program in Ecology, EvolutionaryBiol. & Behavior, Michigan State University, 3700 E Gull Lake Dr, Hickory Corners, MI 49060, United States.
| | - Tanguy Daufresne
- UMR Eco&Sols, Campus Supagro, 2 place Viala, 34060 Montpellier, France.
| | - François Massol
- CNRS, Université de Lille - Sciences et Technologies, UMR 8198 Evo-Eco-Paleo, SPICI group, F-59655 Villeneuve d'Ascq, France.
| | - Christopher A Klausmeier
- Kellogg Biological Station, Dept. of Plant Biology, & Program in Ecology, EvolutionaryBiol. & Behavior, Michigan State University, 3700 E Gull Lake Dr, Hickory Corners, MI 49060, United States.
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14
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Sperfeld E, Halvorson HM, Malishev M, Clissold FJ, Wagner ND. Woodstoich III: Integrating tools of nutritional geometry and ecological stoichiometry to advance nutrient budgeting and the prediction of consumer‐driven nutrient recycling. OIKOS 2016. [DOI: 10.1111/oik.03529] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Erik Sperfeld
- Leibniz‐Inst. of Freshwater Ecology and Inland Fisheries (IGB) Dept Experimental Limnology Alte Fischerhütte 2 OT Neuglobsow DE‐16775 Stechlin Germany
- School of Biological Sciences and Charles Perkins Centre The University of Sydney Sydney Australia
| | | | - Matthew Malishev
- Centre of Excellence for Biosecurity Risk Analysis (CEBRA), School of BioSciences Univ. of Melbourne Melbourne VIC Australia
| | - Fiona J. Clissold
- Clissold, School of Biological Sciences and The Charles Perkins Centre The Univ. of Sydney Sydney NSW Australia
| | - Nicole D. Wagner
- Environmental and Life Science Graduate Program Trent University, Peterborough ON Canada
- Environmental NMR Centre and Dept of Physical and Environmental Sciences Univ. of Toronto Scarborough ON Canada
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15
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Čapek P, Kotas P, Manzoni S, Šantrůčková H. Drivers of phosphorus limitation across soil microbial communities. Funct Ecol 2016. [DOI: 10.1111/1365-2435.12650] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Petr Čapek
- Department of Ecosystem Biology University of South Bohemia Branišovská 1760, 370 05 České Budějovice Czech Republic
| | - Petr Kotas
- Department of Ecosystem Biology University of South Bohemia Branišovská 1760, 370 05 České Budějovice Czech Republic
| | - Stefano Manzoni
- Department of Physical Geography Stockholm University SE‐106 91 Stockholm Sweden
- Bolin Centre for Climate Research Stockholm University SE‐106 91 Stockholm Sweden
| | - Hana Šantrůčková
- Department of Ecosystem Biology University of South Bohemia Branišovská 1760, 370 05 České Budějovice Czech Republic
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16
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Sitters J, Atkinson CL, Guelzow N, Kelly P, Sullivan LL. Spatial stoichiometry: cross-ecosystem material flows and their impact on recipient ecosystems and organisms. OIKOS 2015. [DOI: 10.1111/oik.02392] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Judith Sitters
- Dept of Ecology and Environmental Science; Umeå Univ.; SE-901 87 Umeå Sweden
| | - Carla L. Atkinson
- Dept of Ecology and Evolutionary Biology; Cornell Univ.; Ithaca NY 14853 USA
| | - Nils Guelzow
- Dept of Geography and Environment; Mount Allison Univ.; Sackville, New Brunswick NB E4L 1E2 Canada
| | - Patrick Kelly
- Dept of Biological Sciences; Univ. of Notre Dame; Notre Dame IN 46556 USA
| | - Lauren L. Sullivan
- Dept of Ecology, Evolution and Organismal Biology; Iowa State Univ.; Ames IA 50011-1020 USA
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Johnson NC, Wilson GWT, Wilson JA, Miller RM, Bowker MA. Mycorrhizal phenotypes and the Law of the Minimum. THE NEW PHYTOLOGIST 2015; 205:1473-1484. [PMID: 25417818 DOI: 10.1111/nph.13172] [Citation(s) in RCA: 184] [Impact Index Per Article: 20.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/01/2014] [Accepted: 10/06/2014] [Indexed: 05/09/2023]
Abstract
Mycorrhizal phenotypes arise from interactions among plant and fungal genotypes and the environment. Differences in the stoichiometry and uptake capacity of fungi and plants make arbuscular mycorrhizal (AM) fungi inherently more nitrogen (N) limited and less phosphorus (P) limited than their host plants. Mutualistic phenotypes are most likely in P-limited systems and commensal or parasitic phenotypes in N-limited systems. Carbon (C) limitation is expected to cause phenotypes to shift from mutualism to commensalism and even parasitism. Two experiments compared the influence of fertilizer and shade on mycorrhizas in Andropogon gerardii across three naturally N-limited or P-limited grasslands. A third experiment examined the interactive effects of N and P enrichment and shade on A. gerardii mycorrhizas. Our experiments generated the full spectrum of mycorrhizal phenotypes. These findings support the hypothesis that mutualism is likely in P-limited systems and commensalism or parasitism is likely in N-limited systems. Furthermore, shade decreased C-assimilation and generated less mutualistic mycorrhizal phenotypes with reduced plant and fungal biomass. Soil fertility is a key controller of mycorrhizal costs and benefits and the Law of the Minimum is a useful predictor of mycorrhizal phenotype. In our experimental grasslands arbuscular mycorrhizas can ameliorate P-limitation but not N-limitation.
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Affiliation(s)
- Nancy Collins Johnson
- School of Earth Sciences and Environmental Sustainability and Department of Biological Sciences, Northern Arizona University Flagstaff, Flagstaff, AZ, 86011, USA
| | - Gail W T Wilson
- Natural Resource Ecology & Management, Oklahoma State University, Stillwater, OK, 74077, USA
| | - Jacqueline A Wilson
- Natural Resource Ecology & Management, Oklahoma State University, Stillwater, OK, 74077, USA
| | - R Michael Miller
- Biosciences Division, Argonne National Laboratory, Argonne, IL, 60439, USA
| | - Matthew A Bowker
- School of Forestry, Northern Arizona University, Flagstaff, AZ, 86011, USA
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18
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Burgett AA, Chase JM. Landscape context influences the abundance of amphibians and the strength of their food web interactions in small ponds. OIKOS 2014. [DOI: 10.1111/oik.00951] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Amber A. Burgett
- Dept of Biology; Wittenberg Univ.; Box 720, Springfield OH 45504 USA
| | - Jonathan M. Chase
- German Centre fir Integrative Biodiversity Reserach (IDIV) Halle-Jena-Lepzig; Deutscher Platz 5e DE-04103 Leipzig Germany
- Inst. of Computer Science, Martin Luther Univ. Halle-Wittenberg; DE-06120 Halle Germany
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19
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Arreguín-Sánchez F. Measuring resilience in aquatic trophic networks from supply–demand-of-energy relationships. Ecol Modell 2014. [DOI: 10.1016/j.ecolmodel.2013.10.018] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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20
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Proteomic and transcriptomic analyses of "Candidatus Pelagibacter ubique" describe the first PII-independent response to nitrogen limitation in a free-living Alphaproteobacterium. mBio 2013; 4:e00133-12. [PMID: 24281717 PMCID: PMC3870248 DOI: 10.1128/mbio.00133-12] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
UNLABELLED Nitrogen is one of the major nutrients limiting microbial productivity in the ocean, and as a result, most marine microorganisms have evolved systems for responding to nitrogen stress. The highly abundant alphaproteobacterium "Candidatus Pelagibacter ubique," a cultured member of the order Pelagibacterales (SAR11), lacks the canonical GlnB, GlnD, GlnK, and NtrB/NtrC genes for regulating nitrogen assimilation, raising questions about how these organisms respond to nitrogen limitation. A survey of 266 Alphaproteobacteria genomes found these five regulatory genes nearly universally conserved, absent only in intracellular parasites and members of the order Pelagibacterales, including "Ca. Pelagibacter ubique." Global differences in mRNA and protein expression between nitrogen-limited and nitrogen-replete cultures were measured to identify nitrogen stress responses in "Ca. Pelagibacter ubique" strain HTCC1062. Transporters for ammonium (AmtB), taurine (TauA), amino acids (YhdW), and opines (OccT) were all elevated in nitrogen-limited cells, indicating that they devote increased resources to the assimilation of nitrogenous organic compounds. Enzymes for assimilating amine into glutamine (GlnA), glutamate (GltBD), and glycine (AspC) were similarly upregulated. Differential regulation of the transcriptional regulator NtrX in the two-component signaling system NtrY/NtrX was also observed, implicating it in control of the nitrogen starvation response. Comparisons of the transcriptome and proteome supported previous observations of uncoupling between transcription and translation in nutrient-deprived "Ca. Pelagibacter ubique" cells. Overall, these data reveal a streamlined, PII-independent response to nitrogen stress in "Ca. Pelagibacter ubique," and likely other Pelagibacterales, and show that they respond to nitrogen stress by allocating more resources to the assimilation of nitrogen-rich organic compounds. IMPORTANCE Pelagibacterales are extraordinarily abundant and play a pivotal role in marine geochemical cycles, as one of the major recyclers of labile dissolved organic matter. They are also models for understanding how streamlining selection can reshape chemoheterotroph metabolism. Streamlining and its broad importance to environmental microbiology are emerging slowly from studies that reveal the complete genomes of uncultured organisms. Here, we report another remarkable example of streamlined metabolism in Pelagibacterales, this time in systems that control nitrogen assimilation. Pelagibacterales are major contributors to metatranscriptomes and metaproteomes from ocean systems, where patterns of gene expression are used to gain insight into ocean conditions and geochemical cycles. The data presented here supply background that is essential to interpreting data from field studies.
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Cohen MJ, Kurz MJ, Heffernan JB, Martin JB, Douglass RL, Foster CR, Thomas RG. Diel phosphorus variation and the stoichiometry of ecosystem metabolism in a large spring-fed river. ECOL MONOGR 2013. [DOI: 10.1890/12-1497.1] [Citation(s) in RCA: 70] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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22
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Danger M, Arce Funck J, Devin S, Heberle J, Felten V. Phosphorus content in detritus controls life‐history traits of a detritivore. Funct Ecol 2013. [DOI: 10.1111/1365-2435.12079] [Citation(s) in RCA: 56] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Michael Danger
- LIEC – Laboratoire Interdisciplinaire des Environnements Continentaux University of Lorraine UMR CNRS 7360 rue C. Bernard 57070 Metz France
| | - Julio Arce Funck
- LIEC – Laboratoire Interdisciplinaire des Environnements Continentaux University of Lorraine UMR CNRS 7360 rue C. Bernard 57070 Metz France
| | - Simon Devin
- LIEC – Laboratoire Interdisciplinaire des Environnements Continentaux University of Lorraine UMR CNRS 7360 rue C. Bernard 57070 Metz France
| | - Julie Heberle
- LIEC – Laboratoire Interdisciplinaire des Environnements Continentaux University of Lorraine UMR CNRS 7360 rue C. Bernard 57070 Metz France
| | - Vincent Felten
- LIEC – Laboratoire Interdisciplinaire des Environnements Continentaux University of Lorraine UMR CNRS 7360 rue C. Bernard 57070 Metz France
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23
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Mulder C, Ahrestani FS, Bahn M, Bohan DA, Bonkowski M, Griffiths BS, Guicharnaud RA, Kattge J, Krogh PH, Lavorel S, Lewis OT, Mancinelli G, Naeem S, Peñuelas J, Poorter H, Reich PB, Rossi L, Rusch GM, Sardans J, Wright IJ. Connecting the Green and Brown Worlds. ADV ECOL RES 2013. [DOI: 10.1016/b978-0-12-420002-9.00002-0] [Citation(s) in RCA: 81] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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Manzoni S, Taylor P, Richter A, Porporato A, Ågren GI. Environmental and stoichiometric controls on microbial carbon-use efficiency in soils. THE NEW PHYTOLOGIST 2012; 196:79-91. [PMID: 22924405 DOI: 10.1111/j.1469-8137.2012.04225.x] [Citation(s) in RCA: 326] [Impact Index Per Article: 27.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/07/2023]
Abstract
Carbon (C) metabolism is at the core of ecosystem function. Decomposers play a critical role in this metabolism as they drive soil C cycle by mineralizing organic matter to CO(2). Their growth depends on the carbon-use efficiency (CUE), defined as the ratio of growth over C uptake. By definition, high CUE promotes growth and possibly C stabilization in soils, while low CUE favors respiration. Despite the importance of this variable, flexibility in CUE for terrestrial decomposers is still poorly characterized and is not represented in most biogeochemical models. Here, we synthesize the theoretical and empirical basis of changes in CUE across aquatic and terrestrial ecosystems, highlighting common patterns and hypothesizing changes in CUE under future climates. Both theoretical considerations and empirical evidence from aquatic organisms indicate that CUE decreases as temperature increases and nutrient availability decreases. More limited evidence shows a similar sensitivity of CUE to temperature and nutrient availability in terrestrial decomposers. Increasing CUE with improved nutrient availability might explain observed declines in respiration from fertilized stands, while decreased CUE with increasing temperature and plant C : N ratios might decrease soil C storage. Current biogeochemical models could be improved by accounting for these CUE responses along environmental and stoichiometric gradients.
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Affiliation(s)
- Stefano Manzoni
- Department of Civil and Environmental Engineering, Duke University, Box 90287, Durham, NC 27708-0287, USA
- Nicholas School of the Environment, Duke University, Box 90328, Durham, NC 27708, USA
| | - Philip Taylor
- Department of Ecology and Evolutionary Biology, University of Colorado, Boulder, CO, USA
| | - Andreas Richter
- Department of Terrestrial Ecosystem Research, University of Vienna, Althanstrasse 14, 1090 Austria
| | - Amilcare Porporato
- Department of Civil and Environmental Engineering, Duke University, Box 90287, Durham, NC 27708-0287, USA
- Nicholas School of the Environment, Duke University, Box 90328, Durham, NC 27708, USA
| | - Göran I Ågren
- Department of Ecology, Swedish University of Agricultural Sciences, Uppsala, Sweden
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Guo L, Chen Y, Zhang Z, Fukushima T. N : P stoichiometry in a forested runoff during storm events: comparisons with regions and vegetation types. ScientificWorldJournal 2012; 2012:257392. [PMID: 22547978 PMCID: PMC3322624 DOI: 10.1100/2012/257392] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2011] [Accepted: 10/17/2011] [Indexed: 11/29/2022] Open
Abstract
Nitrogen and phosphorus are considered the most important limiting elements in terrestrial and aquatic ecosystems. however, very few studies have focused on which is from forested streams, a bridge between these two systems. To fill this gap, we examined the concentrations of dissolved N and P in storm waters from forested watersheds of five regions in Japan, to characterize nutrient limitation and its potential controlling factors. First, dissolved N and P concentrations and the N : P ratio on forested streams were higher during storm events relative to baseflow conditions. Second, significantly higher dissolved inorganic N concentrations were found in storm waters from evergreen coniferous forest streams than those from deciduous broadleaf forest streams in Aichi, Kochi, Mie, Nagano, and with the exception of Tokyo. Finally, almost all the N : P ratios in the storm water were generally higher than 34, implying that the storm water should be P-limited, especially for Tokyo.
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Affiliation(s)
- Lanlan Guo
- State Key Laboratory of Earth Surface Processes and Resource Ecology, Academy of Disaster Reduction and Emergency Management, Beijing Normal University, Beijing 100875, China
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26
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Marleau JN, Jin Y, Bishop JG, Fagan WF, Lewis MA. A Stoichiometric Model of Early Plant Primary Succession. Am Nat 2011; 177:233-45. [PMID: 21460559 DOI: 10.1086/658066] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Affiliation(s)
- Justin N Marleau
- Department of Biological Sciences, University of Alberta, Biological Sciences Building, Edmonton, Alberta T6G 2E9, Canada.
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Mulholland PJ, Webster JR. Nutrient dynamics in streams and the role of J-NABS. ACTA ACUST UNITED AC 2010. [DOI: 10.1899/08-035.1] [Citation(s) in RCA: 87] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Patrick J. Mulholland
- Environmental Sciences Division, Oak Ridge National Laboratory, P.O. Box 2008, Oak Ridge, Tennessee 37831-6036 USA
| | - Jackson R. Webster
- Department of Biological Sciences, Virginia Polytechnic Institute and State University, Blacksburg, Virginia 24061 USA
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Hall SR. Stoichiometrically Explicit Food Webs: Feedbacks between Resource Supply, Elemental Constraints, and Species Diversity. ANNUAL REVIEW OF ECOLOGY EVOLUTION AND SYSTEMATICS 2009. [DOI: 10.1146/annurev.ecolsys.39.110707.173518] [Citation(s) in RCA: 73] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
A stoichiometrically explicit approach to food web ecology yields new insight into promotion and degradation of diversity, changes in species composition along environmental gradients, biomass partitioning among trophic levels, and limitation of primary production. These revelations emerge from food web modules that incorporate fundamental constraints imposed by mass balance and a key trait, stoichiometric body composition, into a species’ niche. These niche components involve a species’ requirements from its environment and its own impacts on its environment. More specifically, stoichiometric composition influences minimal nutrient requirements of consumers (perhaps especially grazers); this component becomes pertinent because large imbalances often arise between nutrient:carbon content of consumers relative to prey. Furthermore, these imbalances then modulate the impact of consumers on their own resources through nutrient recycling. Once these niche components become synthesized, their implications in shaping food webs provide powerful mechanisms linking changes in environmental gradients with community structure and ecosystem function.
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Affiliation(s)
- Spencer R. Hall
- Department of Biology, Indiana University, Bloomington, Indiana 47405
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30
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Valett HM, Thomas SA, Mulholland PJ, Webster JR, Dahm CN, Fellows CS, Crenshaw CL, Peterson CG. ENDOGENOUS AND EXOGENOUS CONTROL OF ECOSYSTEM FUNCTION: N CYCLING IN HEADWATER STREAMS. Ecology 2008; 89:3515-27. [PMID: 19137956 DOI: 10.1890/07-1003.1] [Citation(s) in RCA: 70] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Affiliation(s)
- H M Valett
- Department of Biological Sciences, Virginia Tech, Blacksburg, Virginia 24061, USA.
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31
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Danger M, Daufresne T, Lucas F, Pissard S, Lacroix G. Does Liebig's law of the minimum scale up from species to communities? OIKOS 2008. [DOI: 10.1111/j.1600-0706.2008.16793.x] [Citation(s) in RCA: 148] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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32
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Danger M, Daufresne T, Lucas F, Pissard S, Lacroix G. Does Liebig's law of the minimum scale up from species to communities? OIKOS 2008. [DOI: 10.1111/j.0030-1299.2008.16793.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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33
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Ballantyne IV F, Menge D, Ostling A, Hosseini P. Nutrient Recycling Affects Autotroph and Ecosystem Stoichiometry. Am Nat 2008; 171:511-23. [DOI: 10.1086/528967] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Lovelock CE, Feller IC, Ball MC, Ellis J, Sorrell B. Testing the growth rate vs. geochemical hypothesis for latitudinal variation in plant nutrients. Ecol Lett 2007; 10:1154-63. [PMID: 17927772 DOI: 10.1111/j.1461-0248.2007.01112.x] [Citation(s) in RCA: 61] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Two hypotheses have been proposed to explain increases in plant nitrogen (N) and phosphorus (P) concentrations with latitude: (i) geochemical limitation to P availability in the tropics and (ii) temperature driven variation in growth rate, where greater growth rates (requiring greater nutrient levels) are needed to complete growth and reproduction within shorter growing seasons in temperate than tropical climates. These two hypotheses were assessed in one forest type, intertidal mangroves, using fertilized plots at sites between latitudes 36 masculine S and 27 masculine N. The N and P concentrations in mangrove leaf tissue increased with latitude, but there were no trends in N : P ratios. Growth rates of trees, adjusted for average minimum temperature showed a significant increase with latitude supporting the Growth Rate Hypothesis. However, support for the Geochemical Hypothesis was also strong; both photosynthetic P use efficiency and nutrient resorption efficiency decreased with increasing latitude, indicating that P was less limiting to metabolism at the higher latitudes. Our study supports the hypothesis that historically low P availability in the tropics has been an important selective pressure shaping the evolution of plant traits.
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Affiliation(s)
- C E Lovelock
- Centre for Marine Studies and School of Integrative Biology, University of Queensland, St Lucia, Queensland 4072, Australia.
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36
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Modeling the dynamics of nutrient limited consumer populations using constant elasticity production functions. Ecol Modell 2007. [DOI: 10.1016/j.ecolmodel.2007.05.009] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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37
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38
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Espeleta JF, Clark DA. MULTI-SCALE VARIATION IN FINE-ROOT BIOMASS IN A TROPICAL RAIN FOREST: A SEVEN-YEAR STUDY. ECOL MONOGR 2007. [DOI: 10.1890/06-1257.1] [Citation(s) in RCA: 71] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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Ellison AM. Nutrient limitation and stoichiometry of carnivorous plants. PLANT BIOLOGY (STUTTGART, GERMANY) 2006; 8:740-7. [PMID: 17203429 DOI: 10.1055/s-2006-923956] [Citation(s) in RCA: 85] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
The cost-benefit model for the evolution of carnivorous plants posits a trade-off between photosynthetic costs associated with carnivorous structures and photosynthetic benefits accrued through additional nutrient acquisition. The model predicts that carnivory is expected to evolve if its marginal benefits exceed its marginal costs. Further, the model predicts that when nutrients are scarce but neither light nor water is limiting, carnivorous plants should have an energetic advantage in competition with non-carnivorous plants. Since the publication of the cost-benefit model over 20 years ago, marginal photosynthetic costs of carnivory have been demonstrated but marginal photosynthetic benefits have not. A review of published data and results of ongoing research show that nitrogen, phosphorus, and potassium often (co-)limit growth of carnivorous plants and that photosynthetic nutrient use efficiency is 20 - 50 % of that of non-carnivorous plants. Assessments of stoichiometric relationships among limiting nutrients, scaling of leaf mass with photosynthesis and nutrient content, and photosynthetic nutrient use efficiency all suggest that carnivorous plants are at an energetic disadvantage relative to non-carnivorous plants in similar habitats. Overall, current data support some of the predictions of the cost-benefit model, fail to support others, and still others remain untested and merit future research. Rather than being an optimal solution to an adaptive problem, botanical carnivory may represent a set of limited responses constrained by both phylogenetic history and environmental stress.
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Affiliation(s)
- A M Ellison
- Harvard University, Harvard Forest, 324 North Main Street, Petersham, MA 01366, USA.
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40
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Ptacnik R, Jenerette GD, Verschoor AM, Huberty AF, Solimini AG, Brookes JD. Applications of ecological stoichiometry for sustainable acquisition of ecosystem services. OIKOS 2005. [DOI: 10.1111/j.0030-1299.2005.14051.x] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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