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Ecosystem services of the Southern Ocean: trade-offs in decision-making
Antarctic Science ( IF 1.6 ) Pub Date : 2013-06-12 , DOI: 10.1017/s0954102013000308
Susie M Grant 1 , Simeon L Hill , Philip N Trathan , Eugene J Murphy
Affiliation  

Ecosystem services are the benefits that mankind obtains from natural ecosystems. Here we identify the key services provided by the Southern Ocean. These include provisioning of fishery products, nutrient cycling, climate regulation and the maintenance of biodiversity, with associated cultural and aesthetic benefits. Potential catch limits for Antarctic krill (Euphausia superba Dana) alone are equivalent to 11% of current global marine fisheries landings. We also examine the extent to which decision-making within the Antarctic Treaty System (ATS) considers trade-offs between ecosystem services, using the management of the Antarctic krill fishery as a case study. Management of this fishery considers a three-way trade-off between fisheries performance, the status of the krill stock and that of predator populations. However, there is a paucity of information on how well these components represent other ecosystem services that might be degraded as a result of fishing. There is also a lack of information on how beneficiaries value these ecosystem services. A formal ecosystem assessment would help to address these knowledge gaps. It could also help to harmonize decision-making across the ATS and promote global recognition of Southern Ocean ecosystem services by providing a standard inventory of the relevant ecosystem services and their value to beneficiaries.

中文翻译:

南大洋的生态系统服务:决策中的权衡取舍

生态系统服务是人类从自然生态系统中获得的利益。在这里,我们确定了南大洋提供的关键服务。其中包括提供渔业产品、养分循环、气候调节和维护生物多样性,以及相关的文化和审美利益。南极磷虾的潜在捕捞限制 (大戟仅 Dana) 就相当于当前全球海洋渔业上岸量的 11%。我们还以南极磷虾渔业的管理为例,研究了南极条约系统 (ATS) 内的决策在多大程度上考虑了生态系统服务之间的权衡。该渔业的管理考虑了渔业绩效、磷虾种群状况和捕食者种群状况之间的三方面权衡。然而,关于这些组成部分如何代表其他可能因捕鱼而退化的生态系统服务的信息很少。也缺乏关于受益人如何评价这些生态系统服务的信息。正式的生态系统评估将有助于解决这些知识差距。
更新日期:2013-06-12
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