globalchange  > 气候减缓与适应
DOI: 10.1111/ele.12820
Scopus记录号: 2-s2.0-85029604402
论文题名:
Metabolic compensation constrains the temperature dependence of gross primary production
作者: Padfield D.; Lowe C.; Buckling A.; Ffrench-Constant R.; Student Research Team; Jennings S.; Shelley F.; Ólafsson J.S.; Yvon-Durocher G.
刊名: Ecology Letters
ISSN: 1461023X
EISSN: 1461-0248
出版年: 2017
卷: 20, 期:10
起始页码: 1250
结束页码: 1260
语种: 英语
英文关键词: Global warming ; gross primary production ; metabolic theory
Scopus关键词: biomass ; carbon cycle ; ecosystem ; photosynthesis ; temperature ; Biomass ; Carbon Cycle ; Ecosystem ; Photosynthesis ; Temperature
英文摘要: Gross primary production (GPP) is the largest flux in the carbon cycle, yet its response to global warming is highly uncertain. The temperature dependence of GPP is directly linked to photosynthetic physiology, but the response of GPP to warming over longer timescales could also be shaped by ecological and evolutionary processes that drive variation in community structure and functional trait distributions. Here, we show that selection on photosynthetic traits within and across taxa dampens the effects of temperature on GPP across a catchment of geothermally heated streams. Autotrophs from cold streams had higher photosynthetic rates and after accounting for differences in biomass among sites, biomass-specific GPP was independent of temperature in spite of a 20 °C thermal gradient. Our results suggest that temperature compensation of photosynthetic rates constrains the long-term temperature dependence of GPP, and highlights the importance of considering physiological, ecological and evolutionary mechanisms when predicting how ecosystem-level processes respond to warming. © 2017 The Authors Ecology Letters published by CNRS and John Wiley & Sons Ltd
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/107559
Appears in Collections:气候减缓与适应

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作者单位: Environment and Sustainability Institute, University of Exeter, Penryn, Cornwall, United Kingdom; Centre for Ecology and Conservation, College of Life and Environmental Sciences, University of Exeter, Penryn, Cornwall, United Kingdom; Centre for Environment, Fisheries and Aquaculture Science, Lowestoft, United Kingdom; School of Environmental Sciences, Norwich Research Park, University of East Anglia, Norwich, United Kingdom; International Council for the Exploration of the Sea, H. C. Andersens Boulevard 44-46, Copenhagen V, Denmark; School of Biological and Chemical Sciences, Queen Mary University of London, London, United Kingdom; Marine and Freshwater Research Institute, Árleyni 22, Reykjavik, Iceland

Recommended Citation:
Padfield D.,Lowe C.,Buckling A.,et al. Metabolic compensation constrains the temperature dependence of gross primary production[J]. Ecology Letters,2017-01-01,20(10)
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