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题名: Linking secondary structure of individual size distribution with nonlinear size–trophic level relationship in food webs
作者: Chih-hao Hsieh
Chun-Wei Chang
Takeshi Miki
Fuh-Kwo Shiah
Shuh-ji Kao
Jiunn-Tzong Wu
Akash R. Sastri
贡献者: 國立臺灣海洋大學:海洋環境化學與生態研究所
关键词: zooplankton
Feitsui Reservoir, Taiwan
freshwater lake plankton
individual size distribution
metabolic theory
microbial food web
omnivorous feeding
size-based food webs
size–trophic level relationship
stable isotope analysis
trophic interactions
日期: 2014-04
上传时间: 2017-02-08T08:43:49Z
出版者: Ecology
摘要: Abstract: Existing individual size distribution (ISD) theories assume that the trophic level (TL) of an organism varies as a linear function of its log-transformed body size. This assumption predicts a power-law distribution of the ISD, i.e., a linear relationship between size and abundance in log space. However, the secondary structure of ISD (nonlinear dome shape structures deviating from a power-law distribution) is often observed. We propose a model that extends the metabolic theory to link the secondary structure of ISD to the nonlinear size-TL relationship. This model is tested with empirical data collected from a subtropical reservoir. The empirical ISD and size-TL relationships were constructed by FlowCAM imaging analysis and stable isotope analyses, respectively. Our results demonstrate that the secondary structure of ISD can be predicted from the nonlinear function of size-TL relationship and vice versa. Moreover, these secondary structures arise due to (1) zooplankton omnivory and (2) the trophic interactions within microbial food webs.
關聯: 95(4)
URI: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/41123
显示于类别:[海洋環境與生態研究所] 期刊論文

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