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保护和温度变化对海洋保护区网络时间稳定的影响
Griffin Srednick1, Stephen E Swearer1
1National Centre for Coasts and Climate, School of BioSciences, The University of Melbourne, Melbourne, Victoria, Australia.
概括
海洋保护区 (MPA) 可以影响生态系统的稳定性,但温度变化起到更大的作用. 了解这些驱动因素对于人类时代有效的保护策略至关重要.
科学领域:
- 海洋生态海洋生态学
- 生态系统稳定性 生态系统稳定性
- 保护科学 保护科学
背景情况:
- 生态系统的稳定性对于预测对人为变化的生态反应至关重要.
- 海洋保护区 (MPA) 是旨在增强生物多样性和减轻人类影响的管理工具.
- 由于复杂的物种相互作用和社区动态,评估生态系统稳定性是复杂的.
研究的目的:
- 调查海洋保护区 (MPA) 网络内的潮下社区的时间稳定的驱动因素.
- 在12年期间,将MPA和参考地点之间的社区和元社区稳定性进行比较.
- 为了确定物种相互作用和环境因素 (海面温度) 对生态系统稳定的相对影响.
主要方法:
- 利用了来自海峡群岛MPA网络的12年时间序列的潮下社区结构数据.
- 估计物种相互作用强度 (竞争,掠食) 和在食物网络中的猎物同步.
- 分析了海面温度的时间变化及其对网络稳定性的影响.
主要成果:
- 圣罗莎岛的MPA显示时间稳定性增加,与猎物同步减少有关.
- 在MPA中增加的物种相互作用强度 (竞争和掠食) 与较低的营养网络稳定性相关.
- 海洋表面温度变化对区域稳定产生了积极影响,并通过减少相互作用强度间接影响到当地稳定.
结论:
- 虽然海洋保护区可以提高特定地点的稳定性,但温度变化等环境因素对元社区稳定性产生更大的影响.
- 温度变化调解物种相互作用,促进空间时间异质性,这对稳定性至关重要.
- 未来的MPA网络规划应纳入广泛的环境变化,以加强生态系统对气候变化的抵抗力.
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