气候变化领域集成服务门户(CCPortal): Biodiversity mediates top-down control in eelgrass ecosystems: A global comparative-experimental approach

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DOI	10.1111/ele.12448
	Biodiversity mediates top-down control in eelgrass ecosystems: A global comparative-experimental approach
	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.
发表日期	2015
ISSN	1461-023X
EISSN	1461-0248
卷号	18 期号:7
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.
英文关键词	Biodiversity-ecosystem functioning; Bottom-up control; Coordinated experiments; Food webs; Metabolic ecology; Structural equation modelling; Top-down control
学科领域	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
语种	英语
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
来源期刊	Ecology Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/118714
作者单位	Virginia Institute of Marine Science, Gloucester Point, VA 23062-1346, United States; Tennenbaum Marine Observatories Network, Smithsonian Institution, Washington, DC, 20013-7012, United States; Department of Biosciences, Environmental and Marine Biology, Åbo Akademi University, Åbo, 20520, Finland; Shoals Marine Laboratory, Cornell University, Portsmouth, NH 03801, United States; Département des sciences fondamentales and Québec-Océan, Université du Québec à Chicoutimi, Chicoutimi, QC G7H 2B1, Canada; Centre for Ecological and Evolutionary Studies, University of Groningen, Groningen, 9747 AG, Netherlands; Florida Gulf Coast University, Fort Myers, FL 33965, United States; Department of Ecology, Environment and Plant Sciences, Stockholm University, Stockholm, 106 91, Sweden; Centro de Ciências do Mar do Algarve (CCMAR), University of Algarve, Faro, 8005 139, Portugal; Department of Biosciences, University of Oslo, Oslo, 0316, Norway; Department of Biological and Environmental Sciences, University of G...
推荐引用方式 GB/T 7714	Duffy J.E.,Reynolds P.L.,Boström C.,et al. Biodiversity mediates top-down control in eelgrass ecosystems: A global comparative-experimental approach[J],2015,18(7).
APA	Duffy J.E..,Reynolds P.L..,Boström C..,Coyer J.A..,Cusson M..,...&Stachowicz J.J..(2015).Biodiversity mediates top-down control in eelgrass ecosystems: A global comparative-experimental approach.Ecology Letters,18(7).
MLA	Duffy J.E.,et al."Biodiversity mediates top-down control in eelgrass ecosystems: A global comparative-experimental approach".Ecology Letters 18.7(2015).