DOI: 10.1111/gcb.12285
论文题名: Diatoms can be an important exception to temperature-size rules at species and community levels of organization
作者: Adams G.L. ; Pichler D.E. ; Cox E.J. ; O'Gorman E.J. ; Seeney A. ; Woodward G. ; Reuman D.C.
刊名: Global Change Biology
ISSN: 13541013
出版年: 2013
卷: 19, 期: 11 起始页码: 3540
结束页码: 3552
语种: 英语
英文关键词: Bergmann's rule
; Climate change
; Community size structure
; Diatoms
; Global warming
; James' rule
; Phytobenthos
; Phytoplankton
; Temperature-size relationships
; Temperature-size rule
Scopus关键词: aquatic ecosystem
; body size
; climate change
; community composition
; diatom
; global warming
; phytobenthos
; phytoplankton
; taxonomy
; temperature effect
; temperature profile
; Bacillariophyta
; article
; Bergmann's rule
; classification
; climate change
; community size structure
; cytology
; diatom
; ecosystem
; greenhouse effect
; Iceland
; James' rule
; phytobenthos
; phytoplankton
; temperature
; temperature-size relationships
; temperature-size rule
; Bergmann's rule
; climate change
; community size structure
; diatoms
; global warming
; James' rule
; phytobenthos
; phytoplankton
; temperature-size relationships
; temperature-size rule
; Climate Change
; Diatoms
; Ecosystem
; Iceland
; Temperature
英文摘要: Climate warming has been linked to an apparent general decrease in body sizes of ectotherms, both across and within taxa, especially in aquatic systems. Smaller body size in warmer geographical regions has also been widely observed. Since body size is a fundamental determinant of many biological attributes, climate-warming-related changes in size could ripple across multiple levels of ecological organization. Some recent studies have questioned the ubiquity of temperature-size rules, however, and certain widespread and abundant taxa, such as diatoms, may be important exceptions. We tested the hypothesis that diatoms are smaller at warmer temperatures using a system of geothermally heated streams. There was no consistent relationship between size and temperature at either the population or community level. These field data provide important counterexamples to both James' and Bergmann's temperature-size rules, respectively, undermining the widely held assumption that warming favours the small. This study provides compelling new evidence that diatoms are an important exception to temperature-size rules for three reasons: (i) we use many more species than prior work; (ii) we examine both community and species levels of organization simultaneously; (iii) we work in a natural system with a wide temperature gradient but minimal variation in other factors, to achieve robust tests of hypotheses without relying on laboratory setups, which have limited realism. In addition, we show that interspecific effects were a bigger contributor to whole-community size differences, and are probably more ecologically important than more commonly studied intraspecific effects. These findings highlight the need for multispecies approaches in future studies of climate warming and body size. © 2013 John Wiley & Sons Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/62284
Appears in Collections: 影响、适应和脆弱性
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作者单位: Imperial College London, Silwood Park Campus, Buckhurst Road, Ascot, Berkshire SL5 7PY, United Kingdom; School of Biological and Chemical Sciences, Queen Mary University of London, Mile End Road, London, E1 4NS, United Kingdom; Natural History Museum, Cromwell Road, London, SW7 5BD, United Kingdom; Laboratory of Populations, Rockefeller University, 1230 York Ave, New York, NY 10065, United States
Recommended Citation:
Adams G.L.,Pichler D.E.,Cox E.J.,et al. Diatoms can be an important exception to temperature-size rules at species and community levels of organization[J]. Global Change Biology,2013-01-01,19(11)