气候变化领域集成服务门户(CCPortal): The energetics of fish growth and how it constrains food-web trophic structure

CCPortal

DOI	10.1111/ele.12947
	The energetics of fish growth and how it constrains food-web trophic structure
	Barneche D.R.; Allen A.P.
发表日期	2018
ISSN	1461023X
卷号	21 期号:6
英文摘要	The allocation of metabolic energy to growth fundamentally influences all levels of biological organisation. Here we use a first-principles theoretical model to characterise the energetics of fish growth at distinct ontogenetic stages and in distinct thermal regimes. Empirically, we show that the mass scaling of growth rates follows that of metabolic rate, and is somewhat steeper at earlier ontogenetic stages. We also demonstrate that the cost of growth, Em, varies substantially among fishes, and that it may increase with temperature, trophic level and level of activity. Theoretically, we show that Em is a primary determinant of the efficiency of energy transfer across trophic levels, and that energy is transferred more efficiently between trophic levels if the prey are young and sedentary. Overall, our study demonstrates the importance of characterising the energetics of individual growth in order to understand constraints on the structure of food webs and ecosystems. © 2018 John Wiley & Sons Ltd/CNRS
英文关键词	Biomass; climate change; efficiency; fisheries; physiology; productivity; trophic pyramids
语种	英语
scopus关键词	Pisces; animal; ecosystem; fish; food chain; temperature; theoretical model; Animals; Ecosystem; Fishes; Food Chain; Models, Theoretical; Temperature
来源期刊	Ecology Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/121311
作者单位	Centre for Geometric Biology, School of Biological Sciences, Monash University, Clayton, VIC 3800, Australia; Department of Biological Sciences, Macquarie University, Sydney, NSW 2109, Australia
推荐引用方式 GB/T 7714	Barneche D.R.,Allen A.P.. The energetics of fish growth and how it constrains food-web trophic structure[J],2018,21(6).
APA	Barneche D.R.,&Allen A.P..(2018).The energetics of fish growth and how it constrains food-web trophic structure.Ecology Letters,21(6).
MLA	Barneche D.R.,et al."The energetics of fish growth and how it constrains food-web trophic structure".Ecology Letters 21.6(2018).