Avoiding critical thresholds through effective monitoring

Avoiding critical thresholds through effective monitoring
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通过有效监控避免关键阈值

DOI:
10.1098/rspb.2022.0526
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发表时间:
2022
期刊:
Proceedings of the Royal Society B: Biological Sciences
影响因子:
--
通讯作者:
Levin, Phillip S.
Levin, Phillip S.
中科院分区:
--
文献类型:
--
作者:
Stier, Adrian C.;Essington, Timothy E.;Samhouri, Jameal F.;Siple, Margaret C.;Halpern, Benjamin S.;White, Crow;Lynham, John M.;Salomon, Anne K.;Levin, Phillip S.

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可持续发展科学的一个主要挑战是确定目标,使生态系统对人类的利益最大化,同时最大限度地降低跨越关键系统阈值的风险。一个关键的阈值是生物量,当达到这个阈值时,种群数量就会枯竭,以至于它们的种群增长率变成负依赖关系。在这里,我们评估了随着自然资源在临界阈值附近花费更多时间,监测信息的价值如何增加。这一好处的出现是因为更高的监测精度促进了更高的产量和更大的从过度收获中恢复的能力。我们表明,当资源水平下降时,触发监测精度提高的预防性缓冲可能提供一种最小化监测成本和最大化利润的方法。在一个资源有限的世界里,提高我们对人口状况精确估计与管理不善成本之间权衡的理解,将有利于承担这些经济和社会成本负担的利益相关者。
A major challenge in sustainability science is identifying targets that maximize ecosystem benefits to humanity while minimizing the risk of crossing critical system thresholds. One critical threshold is the biomass at which populations become so depleted that their population growth rates become negative—depensation. Here, we evaluate how the value of monitoring information increases as a natural resource spends more time near the critical threshold. This benefit emerges because higher monitoring precision promotes higher yield and a greater capacity to recover from overharvest. We show that precautionary buffers that trigger increased monitoring precision as resource levels decline may offer a way to minimize monitoring costs and maximize profits. In a world of finite resources, improving our understanding of the trade-off between precision in estimates of population status and the costs of mismanagement will benefit stakeholders that shoulder the burden of these economic and social costs.
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