| DOI: | 10.1002/2015GB005272
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| Scopus记录号: | 2-s2.0-84963568626
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| 论文题名: | Temperature influence on phytoplankton community growth rates |
| 作者: | Sherman E; , Moore J; K; , Primeau F; , Tanouye D
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| 刊名: | Global Biogeochemical Cycles
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| ISSN: | 8866236
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| 出版年: | 2016
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| 卷: | 30, 期:4 | | 起始页码: | 550
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| 结束页码: | 559
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| 语种: | 英语
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| 英文关键词: | Arrhenius
; grazing
; growth rates
; phytoplankton growth
; Q10
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| Scopus关键词: | climate modeling
; community ecology
; equation
; grazing
; growth rate
; growth response
; phytoplankton
; satellite data
; temperature effect
; zooplankton
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| 英文摘要: | A large database of field estimates of phytoplankton community growth rates in natural populations was compiled and analyzed to determine the apparent temperature effect on phytoplankton community growth rate. We conducted an ordinary least squares regression to optimize the parameters in two commonly used growth-temperature relations (Arrhenius and Q10 models). Both equations fit the observational data equally with the optimized parameter values. The optimum apparent Q10 value was 1.47 ± 0.08 (95% confidence interval, CI). Microzooplankton grazing rates closely matched the temperature trends for phytoplankton growth. This likely reflects a dynamic adjustment of biomass and grazing rates by the microzooplankton to match their available food source, illustrating tight coupling of phytoplankton growth and microzooplankton grazing rates. The field-measured temperature effect and growth rates were compared with estimates from the satellite Carbon-based Productivity Model (CbPM) and three Earth System Models (ESMs), with model output extracted at the same month and sampling locations as the observations. The optimized, apparent Q10 value calculated for the CbPM was 1.51, with overestimation of growth rates. The apparent Q10 value in the Community Earth System Model (V1.0) was 1.65, with modest underestimation of growth rates. The GFDL-ESM2M and GFDL-ESM2G models produced apparent Q10 values of 1.52 and 1.39, respectively. Models with an apparent Q10 that is significantly greater than ~1.5 will overestimate the phytoplankton community growth response to the ongoing climate warming and will have spatial biases in estimated growth rates for the current era. ©2016. American Geophysical Union. All Rights Reserved. |
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| 资源类型: | 期刊论文
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/77864
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| Appears in Collections: | 气候变化事实与影响
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作者单位: | Department of Earth System Science, University of California, Irvine, CA, United States
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| Recommended Citation: | |
Sherman E,, Moore J,K,et al. Temperature influence on phytoplankton community growth rates[J]. Global Biogeochemical Cycles,2016-01-01,30(4)
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