DOI: 10.1111/ele.13670
论文题名: Hidden layers of density dependence in consumer feeding rates
作者: Stouffer D.B. ; Novak M.
刊名: Ecology Letters
ISSN: 1461023X
出版年: 2021
卷: 24, 期: 3 起始页码: 520
结束页码: 532
语种: 英语
中文关键词: Generalist–specialist continuum
; higher-order interactions
; indirect effects
; interaction modifications
; mutual predator effects
; non-additive effects
英文关键词: density dependence
; ecological approach
; environmental factor
; feeding behavior
; fitness
; food web
; functional response
; biological model
; food chain
; Food Chain
; Models, Biological
英文摘要: Functional responses relate a consumer's feeding rates to variation in its abiotic and biotic environment, providing insight into consumer behaviour and fitness, and underpinning population and food-web dynamics. Despite their broad relevance and long-standing history, we show here that the types of density dependence found in classic resource- and consumer-dependent functional-response models equate to strong and often untenable assumptions about the independence of processes underlying feeding rates. We first demonstrate mathematically how to quantify non-independence between feeding and consumer interference and between feeding on multiple resources. We then analyse two large collections of functional-response data sets to show that non-independence is pervasive and borne out in previously hidden forms of density dependence. Our results provide a new lens through which to view variation in consumer feeding rates and disentangle the biological underpinnings of species interactions in multi-species contexts. © 2021 John Wiley & Sons Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/166936
Appears in Collections: 气候变化与战略
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作者单位: Centre for Integrative Ecology, School of Biological Sciences, University of Canterbury, Christchurch, 8041, New Zealand; Department of Integrative Biology, Oregon State University, Corvallis, OR 97331, United States
Recommended Citation:
Stouffer D.B.,Novak M.. Hidden layers of density dependence in consumer feeding rates[J]. Ecology Letters,2021-01-01,24(3)