气候变化领域集成服务门户(CCPortal): Trophic control changes with season and nutrient loading in lakes

CCPortal

DOI	10.1111/ele.13532
	Trophic control changes with season and nutrient loading in lakes
	Rogers T.L.; Munch S.B.; Stewart S.D.; Palkovacs E.P.; Giron-Nava A.; Matsuzaki S.-I.S.; Symons C.C.
发表日期	2020
ISSN	1461023X
起始页码	1287
结束页码	1297
卷号	23 期号:8
英文摘要	Experiments have revealed much about top-down and bottom-up control in ecosystems, but manipulative experiments are limited in spatial and temporal scale. To obtain a more nuanced understanding of trophic control over large scales, we explored long-term time-series data from 13 globally distributed lakes and used empirical dynamic modelling to quantify interaction strengths between zooplankton and phytoplankton over time within and across lakes. Across all lakes, top-down effects were associated with nutrients, switching from negative in mesotrophic lakes to positive in oligotrophic lakes. This result suggests that zooplankton nutrient recycling exceeds grazing pressure in nutrient-limited systems. Within individual lakes, results were consistent with a ‘seasonal reset’ hypothesis in which top-down and bottom-up interactions varied seasonally and were both strongest at the beginning of the growing season. Thus, trophic control is not static, but varies with abiotic conditions – dynamics that only become evident when observing changes over large spatial and temporal scales. © 2020 The Authors. Ecology Letters published by CNRS and John Wiley & Sons Ltd
关键词	consumer control empirical dynamic modelling nutrients resource control species interactions temperature time series
英文关键词	animal; ecosystem; lake; phytoplankton; season; zooplankton; Animals; Ecosystem; Lakes; Nutrients; Phytoplankton; Seasons; Zooplankton
语种	英语
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/204280
作者单位	Southwest Fisheries Science Center, National Marine Fisheries Service, National Oceanic and Atmospheric Administration, Santa Cruz, CA 95060, United States; Cawthron Institute, Nelson, New Zealand; Department of Ecology and Evolutionary Biology, University of California, Santa Cruz, Santa Cruz, CA 95060, United States; National Center for Ecological Analysis and Synthesis, University of California, Santa Barbara, Santa Barbara, CA 93101, United States; Center for Environmental Biology and Ecosystem Studies, National Institute for Environmental Studies, 16-2 Onogawa, Tsukuba, Ibaraki 305-8506, Japan; Department of Ecology and Evolutionary Biology, University of California, Irvine, Irvine, CA 92697, United States
推荐引用方式 GB/T 7714	Rogers T.L.,Munch S.B.,Stewart S.D.,et al. Trophic control changes with season and nutrient loading in lakes[J],2020,23(8).
APA	Rogers T.L..,Munch S.B..,Stewart S.D..,Palkovacs E.P..,Giron-Nava A..,...&Symons C.C..(2020).Trophic control changes with season and nutrient loading in lakes.Ecology Letters,23(8).
MLA	Rogers T.L.,et al."Trophic control changes with season and nutrient loading in lakes".Ecology Letters 23.8(2020).