DOI: 10.1111/ele.13625
论文题名: Clockwise and counterclockwise hysteresis characterize state changes in the same aquatic ecosystem
作者: Northrop A.C. ; Avalone V. ; Ellison A.M. ; Ballif B.A. ; Gotelli N.J.
刊名: Ecology Letters
ISSN: 1461023X
出版年: 2021
卷: 24, 期: 1 起始页码: 94
结束页码: 101
语种: 英语
中文关键词: 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
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. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/166900
Appears in Collections: 气候变化与战略
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作者单位: Department of Biology, University of Vermont, Burlington, VT, United States; Harvard Forest, Harvard University, Petersham, MA, United States
Recommended Citation:
Northrop A.C.,Avalone V.,Ellison A.M.,et al. Clockwise and counterclockwise hysteresis characterize state changes in the same aquatic ecosystem[J]. Ecology Letters,2021-01-01,24(1)