High Fish Biomass and Low Nutrient Enrichment Synergistically Enhance Stability in a Seagrass Meta-Ecosystem

IF 7.7 1区环境科学与生态学 Q1 BIODIVERSITY CONSERVATION

Conservation Letters Pub Date : 2024-11-22 DOI:10.1111/conl.13071

Maximilian H. K. Hesselbarth, Jacob E. Allgeier

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引用次数: 0

Abstract

Tropical seagrass ecosystems are globally imperiled due to overfishing and anthropogenic disturbances. Sustaining the services they provide will require managing resilience, particularly with increased volatility from climate change. Portfolio theory is touted as a mechanism to increase resilience in ecosystems because it takes advantage of temporal volatility in local production dynamics to increase stability at larger spatial scales. Using an individual-based model of a network of artificial reefs across multiple seagrass ecosystems that is parameterized with 15 years of field data, we demonstrate that (1) the large fish populations and the low enrichment synergistically increase portfolio effects; (2) the mechanism was via reduced local and increased meta-ecosystem stability in primary production; and (3) stability was greatest under intermediate production because nutrient enrichment reduces and fish, which have less influence on the amount of production, promote stability. Integrating common-sense management with portfolio theory can stabilize the services provided by seagrass ecosystems.

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高鱼类生物量与低营养物质富集协同增强海草元生态系统的稳定性

由于过度捕捞和人为干扰，全球热带海草生态系统濒临灭绝。要维持它们所提供的服务，就必须对复原力进行管理，尤其是在气候变化导致波动加剧的情况下。组合理论被誉为提高生态系统恢复力的一种机制，因为它可以利用当地生产动态的时间波动性来提高更大空间尺度上的稳定性。我们利用一个基于个体的模型，对多个海草生态系统的人工鱼礁网络进行了参数化，并利用 15 年的实地数据证明：(1) 大量鱼类种群和低富集度协同增加了组合效应；(2) 该机制是通过减少初级生产的局部稳定性和增加元生态系统的稳定性实现的；(3) 在中间生产条件下，稳定性最大，因为营养富集度降低，而对生产量影响较小的鱼类促进了稳定性。将常识管理与组合理论相结合，可以稳定海草生态系统提供的服务。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Conservation Letters BIODIVERSITY CONSERVATION-

CiteScore

13.50

自引率

2.40%

发文量

审稿时长

>12 weeks

期刊介绍： Conservation Letters is a reputable scientific journal that is devoted to the publication of both empirical and theoretical research that has important implications for the conservation of biological diversity. The journal warmly invites submissions from various disciplines within the biological and social sciences, with a particular interest in interdisciplinary work. The primary aim is to advance both pragmatic conservation objectives and scientific knowledge. Manuscripts are subject to a rapid communication schedule, therefore they should address current and relevant topics. Research articles should effectively communicate the significance of their findings in relation to conservation policy and practice.