澳大利亚阳光海岸大学W. J. Sydeman等研究人员揭示海洋变化中的半球不对称性。相关论文于2021年5月28日发表于国际学术期刊《科学》。

研究人员发现，海鸟的成功繁育与海洋变暖和人类影响方面的半球差异相关，这对北半球的捕鱼、地表觅食物种影响最大。半球不对称表明需要在半球尺度上进行海洋管理。对于北半球而言，目前需要针对饲料鱼类资源制定基于气候的恢复计划来增加海鸟繁殖生产力。

在南半球，海鸟生产力的低幅度变化为战略管理方法提供了机会，例如大型海洋保护区，从而维持食物网和保持捕食者生产力。对海鸟生产力的全球监测可以发现偏远地区的生态系统变化，并有助于人们了解海洋气候对生态系统的影响。

据悉，气候变化和其他人类活动正在对海洋生态系统的生产力造成深远影响。

附：英文原文

Title: Hemispheric asymmetry in ocean change and the productivity of ecosystem sentinels

Author: W. J. Sydeman, D. S. Schoeman, S. A. Thompson, B. A. Hoover, M. García-Reyes, F. Daunt, P. Agnew, T. Anker-Nilssen, C. Barbraud, R. Barrett, P. H. Becker, E. Bell, P. D. Boersma, S. Bouwhuis, B. Cannell, R. J. M. Crawford, P. Dann, K. Delord, G. Elliott, K. E. Erikstad, E. Flint, R. W. Furness, M. P. Harris, S. Hatch, K. Hilwig, J. T. Hinke, J. Jahncke, J. A. Mills, T. K. Reiertsen, H. Renner, R. B. Sherley, C. Surman, G. Taylor, J. A. Thayer, P. N. Trathan, E. Velarde, K. Walker, S. Wanless, P. Warzybok, Y. Watanuki

Issue&Volume: 2021/05/28

Abstract: Climate change and other human activities are causing profound effects on marine ecosystem productivity. We show that the breeding success of seabirds is tracking hemispheric differences in ocean warming and human impacts, with the strongest effects on fish-eating, surface-foraging species in the north. Hemispheric asymmetry suggests the need for ocean management at hemispheric scales. For the north, tactical, climate-based recovery plans for forage fish resources are needed to recover seabird breeding productivity. In the south, lower-magnitude change in seabird productivity presents opportunities for strategic management approaches such as large marine protected areas to sustain food webs and maintain predator productivity. Global monitoring of seabird productivity enables the detection of ecosystem change in remote regions and contributes to our understanding of marine climate impacts on ecosystems.

DOI: 10.1126/science.abf1772

Source: https://science.sciencemag.org/content/372/6545/980