globalchange  > 气候减缓与适应
DOI: 10.1111/ele.12448
Scopus记录号: 2-s2.0-84931561060
论文题名:
Biodiversity mediates top-down control in eelgrass ecosystems: A global comparative-experimental approach
作者: Duffy J.E.; Reynolds P.L.; Boström C.; Coyer J.A.; Cusson M.; Donadi S.; Douglass J.G.; Eklöf J.S.; Engelen A.H.; Eriksson B.K.; Fredriksen S.; Gamfeldt L.; Gustafsson C.; Hoarau G.; Hori M.; Hovel K.; Iken K.; Lefcheck J.S.; Moksnes P.-O.; Nakaoka M.; O'Connor M.I.; Olsen J.L.; Richardson J. P.; Ruesink J.L.; Sotka E.E.; Thormar J.; Whalen M.A.; Stachowicz J.J.
刊名: Ecology Letters
ISSN: 1461023X
EISSN: 1461-0248
出版年: 2015
卷: 18, 期:7
起始页码: 696
结束页码: 705
语种: 英语
英文关键词: Biodiversity-ecosystem functioning ; Bottom-up control ; Coordinated experiments ; Food webs ; Metabolic ecology ; Structural equation modelling ; Top-down control
Scopus关键词: algal bloom ; biodiversity ; bottom-up approach ; endangered species ; environmental factor ; environmental gradient ; experimental study ; fertilization (reproduction) ; food web ; global change ; marine environment ; seagrass ; top-down control ; algae ; Zostera marina ; animal ; biodiversity ; biological model ; biomass ; Crustacea ; eutrophication ; food chain ; gastropod ; genetics ; genotype ; herbivory ; microalga ; physiology ; population dynamics ; Zosteraceae ; Animals ; Biodiversity ; Biomass ; Crustacea ; Eutrophication ; Food Chain ; Gastropoda ; Genotype ; Herbivory ; Microalgae ; Models, Biological ; Population Dynamics ; Zosteraceae
英文摘要: Nutrient pollution and reduced grazing each can stimulate algal blooms as shown by numerous experiments. But because experiments rarely incorporate natural variation in environmental factors and biodiversity, conditions determining the relative strength of bottom-up and top-down forcing remain unresolved. We factorially added nutrients and reduced grazing at 15 sites across the range of the marine foundation species eelgrass (Zostera marina) to quantify how top-down and bottom-up control interact with natural gradients in biodiversity and environmental forcing. Experiments confirmed modest top-down control of algae, whereas fertilisation had no general effect. Unexpectedly, grazer and algal biomass were better predicted by cross-site variation in grazer and eelgrass diversity than by global environmental gradients. Moreover, these large-scale patterns corresponded strikingly with prior small-scale experiments. Our results link global and local evidence that biodiversity and top-down control strongly influence functioning of threatened seagrass ecosystems, and suggest that biodiversity is comparably important to global change stressors. © 2015 John Wiley & Sons Ltd/CNRS.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/107926
Appears in Collections:气候减缓与适应

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作者单位: Virginia Institute of Marine Science, Gloucester Point, VA, United States; Tennenbaum Marine Observatories Network, Smithsonian Institution, Washington, DC, United States; Department of Biosciences, Environmental and Marine Biology, Åbo Akademi University, Åbo, Finland; Shoals Marine Laboratory, Cornell University, Portsmouth, NH, United States; Département des sciences fondamentales and Québec-Océan, Université du Québec à Chicoutimi, Chicoutimi, QC, Canada; Centre for Ecological and Evolutionary Studies, University of Groningen, Groningen, Netherlands; Florida Gulf Coast University, Fort Myers, FL, United States; Department of Ecology, Environment and Plant Sciences, Stockholm University, Stockholm, Sweden; Centro de Ciências do Mar do Algarve (CCMAR), University of Algarve, Faro, Portugal; Department of Biosciences, University of Oslo, Oslo, Norway; Department of Biological and Environmental Sciences, University of Gothen-burg, Göteborg, Sweden; Tvärminne Zoological Station, University of Helsinki, Hanko, Finland; Faculty of Biosciences and Aquaculture, University of Nordland, Bodø, Norway; Fisheries Research Agency, Hiroshima, Japan; Department of Biology, San Diego State University, San Diego, CA, United States; School of Fisheries and Ocean Sciences, University of Alaska Fairbanks, United States; Akkeshi Marine Station, Field Science Center for Northern Biosphere, Hokkaido University, Aikappu, Akkeshi, Hokkaido, Japan; Department of Zoology and Biodiversity Research Centre, University of British Columbia, Vancouver, BC, Canada; Department of Biology, University of Washington, Seattle, WA, United States; Grice Marine Laboratory, College of Charleston, Charleston, SC, United States; Department of Evolution and Ecology, University of California, DavisCA, United States

Recommended Citation:
Duffy J.E.,Reynolds P.L.,Boström C.,et al. Biodiversity mediates top-down control in eelgrass ecosystems: A global comparative-experimental approach[J]. Ecology Letters,2015-01-01,18(7)
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