globalchange  > 影响、适应和脆弱性
DOI: 10.1111/gcb.13641
论文题名:
Temperature–nutrient interactions exacerbate sensitivity to warming in phytoplankton
作者: Thomas M.K.; Aranguren-Gassis M.; Kremer C.T.; Gould M.R.; Anderson K.; Klausmeier C.A.; Litchman E.
刊名: Global Change Biology
ISSN: 13541013
出版年: 2017
卷: 23, 期:8
起始页码: 3269
结束页码: 3280
语种: 英语
英文关键词: mechanistic species distribution model ; nutrients ; phytoplankton ; population growth rate ; R* ; resources ; temperature ; zero net growth isocline (ZNGI)
Scopus关键词: Nitzschia alba ; Thalassiosira pseudonana
英文摘要: Temperature and nutrients are fundamental, highly nonlinear drivers of biological processes, but we know little about how they interact to influence growth. This has hampered attempts to model population growth and competition in dynamic environments, which is critical in forecasting species distributions, as well as the diversity and productivity of communities. To address this, we propose a model of population growth that includes a new formulation of the temperature–nutrient interaction and test a novel prediction: that a species’ optimum temperature for growth, Topt, is a saturating function of nutrient concentration. We find strong support for this prediction in experiments with a marine diatom, Thalassiosira pseudonana: Topt decreases by 3–6 °C at low nitrogen and phosphorus concentrations. This interaction implies that species are more vulnerable to hot, low-nutrient conditions than previous models accounted for. Consequently the interaction dramatically alters species’ range limits in the ocean, projected based on current temperature and nitrate levels as well as those forecast for the future. Ranges are smaller not only than projections based on the individual variables, but also than those using a simpler model of temperature–nutrient interactions. Nutrient deprivation is therefore likely to exacerbate environmental warming's effects on communities. © 2017 John Wiley & Sons Ltd
资助项目: This work was supported by NSF grants DEB-0845932 to EL, OCE-0928819 and DEB 11-36710 to EL and CAK, NSF PRFB Fellowship 1402074 to CTK, a postdoctoral fellowship from Xunta de Galicia (Spain) to MAG, and REU grants from the US National Science Foundation that supported MRG and KA. Also, we are grateful to C. A. Stock for data from the COBALT ecosystem model. This is W. K. Kellogg Biological Station contribution number 1977.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/60857
Appears in Collections:影响、适应和脆弱性

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作者单位: W. K. Kellogg Biological Station, Michigan State University, Hickory Corners, MI, United States; Department of Integrative Biology, Michigan State University, East Lansing, MI, United States; Program in Ecology, Evolutionary Biology & Behavior, Michigan State University, East Lansing, MI, United States; Department of Animal Ecology and Biology, University of Vigo, Vigo, Spain; Department of Ecology and Evolutionary Biology, Yale University, PO Box 208106, New Haven, CT, United States; Atmospheric and Oceanic Sciences Program, Princeton University, Princeton, NJ, United States; Department of Ecology and Evolutionary Biology, University of Connecticut, Storrs, CT, United States; Department of Biological Sciences, University of Illinois at Chicago, 845 West Taylor Street (MC 066), Chicago, IL, United States; Department of Plant Biology, Michigan State University, East Lansing, MI, United States

Recommended Citation:
Thomas M.K.,Aranguren-Gassis M.,Kremer C.T.,et al. Temperature–nutrient interactions exacerbate sensitivity to warming in phytoplankton[J]. Global Change Biology,2017-01-01,23(8)
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