Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1111/ele.13625 |
Clockwise and counterclockwise hysteresis characterize state changes in the same aquatic ecosystem | |
Amanda C. Northrop; Vanessa Avalone; Aaron M. Ellison; Bryan A. Ballif; Nicholas J. Gotelli | |
2020-10-20 | |
发表期刊 | Ecology Letters |
出版年 | 2020 |
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. |
领域 | 资源环境 |
URL | 查看原文 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/300206 |
专题 | 资源环境科学 |
推荐引用方式 GB/T 7714 | Amanda C. Northrop,Vanessa Avalone,Aaron M. Ellison,et al. Clockwise and counterclockwise hysteresis characterize state changes in the same aquatic ecosystem[J]. Ecology Letters,2020. |
APA | Amanda C. Northrop,Vanessa Avalone,Aaron M. Ellison,Bryan A. Ballif,&Nicholas J. Gotelli.(2020).Clockwise and counterclockwise hysteresis characterize state changes in the same aquatic ecosystem.Ecology Letters. |
MLA | Amanda C. Northrop,et al."Clockwise and counterclockwise hysteresis characterize state changes in the same aquatic ecosystem".Ecology Letters (2020). |
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