气候变化领域集成服务门户(CCPortal): Clockwise and counterclockwise hysteresis characterize state changes in the same aquatic ecosystem

CCPortal

DOI	10.1111/ele.13625
	Clockwise and counterclockwise hysteresis characterize state changes in the same aquatic ecosystem
	Northrop A.C.; Avalone V.; Ellison A.M.; Ballif B.A.; Gotelli N.J.
发表日期	2021
ISSN	1461023X
起始页码	94
结束页码	101
卷号	24 期号:1
英文摘要	Incremental increases in a driver variable, such as nutrients or detritus, can trigger abrupt shifts in aquatic ecosystems that may exhibit hysteretic dynamics and a slow return to the initial state. A model system for understanding these dynamics is the microbial assemblage that inhabits the cup-shaped leaves of the pitcher plant Sarracenia purpurea. With enrichment of organic matter, this system flips within three days from an oxygen-rich state to an oxygen-poor state. In a replicated greenhouse experiment, we enriched pitcher-plant leaves at different rates with bovine serum albumin (BSA), a molecular substitute for detritus. Changes in dissolved oxygen (DO) and undigested BSA concentration were monitored during enrichment and recovery phases. With increasing enrichment rates, the dynamics ranged from clockwise hysteresis (low), to environmental tracking (medium), to novel counter-clockwise hysteresis (high). These experiments demonstrate that detrital enrichment rate can modulate a diversity of hysteretic responses within a single aquatic ecosystem, and suggest different management strategies may be needed to mitigate the effects of high vs. low rates of detrital enrichment. © 2020 John Wiley & Sons Ltd.
关键词	Aquatic ecosystem ecosystem recovery enriched ecosystems hysteresis model ecosystems nonlinear dynamics regime shifts Sarracenia purpurea
英文关键词	Bovinae; Sarracenia purpurea; biological model; ecosystem; plant leaf; Sarraceniaceae; Ecosystem; Models, Biological; Plant Leaves; Sarraceniaceae
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/204459
作者单位	Department of Biology, University of Vermont, Burlington, VT, United States; Harvard Forest, Harvard University, Petersham, MA, United States
推荐引用方式 GB/T 7714	Northrop A.C.,Avalone V.,Ellison A.M.,et al. Clockwise and counterclockwise hysteresis characterize state changes in the same aquatic ecosystem[J],2021,24(1).
APA	Northrop A.C.,Avalone V.,Ellison A.M.,Ballif B.A.,&Gotelli N.J..(2021).Clockwise and counterclockwise hysteresis characterize state changes in the same aquatic ecosystem.Ecology Letters,24(1).
MLA	Northrop A.C.,et al."Clockwise and counterclockwise hysteresis characterize state changes in the same aquatic ecosystem".Ecology Letters 24.1(2021).