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Strong fish assemblage patterns persist over sixteen years in a warming marine park, even with tropical shifts
Biological Conservation ( IF 4.9 ) Pub Date : 2019-04-01 , DOI: 10.1016/j.biocon.2019.02.005
Hamish A. Malcolm , Renata Ferrari

Abstract Spatial conservation plans representing existing patterns of biodiversity in Marine Protected Areas (MPAs) should be robust to changes over 10 to 20 years, a temporal scale over which MPA plans are often retained. Using data from MPAs where changes have been detected due to ocean warming, can help inform discussion on how to increase temporal robustness in planning. Our aim was to determine how well fish assemblage patterns, used to develop a Habitat Classification System (HCS) as a coarse biodiversity surrogate in MPA planning, persisted over a 16 year timeframe in a warming region (east coast subtropics) of Australia. We analysed persistence/change in fish assemblage patterns in the Solitary Islands Marine Park (SIMP) where species shifts and habitat changes associated with ocean warming have been detected. Fish relative abundance was recorded at 12 sites over 16 years (2001–2017) using roving timed counts. Strong cross-shelf patterns were maintained over that 16 year period, which included some large-scale disturbances (destructive storms, 2016 mass coral bleaching event). Overall persistence in these broad assemblage patterns suggest a well-designed HCS can be a robust tool for coarsely representing biodiversity patterns in a warming world at decadal scales. ‘Tropicalisation’ was detected in some categories, suggesting additional planning strategies are needed within those and beyond decadal plans.

中文翻译:

即使有热带变化,在变暖的海洋公园中,强烈的鱼类组合模式仍持续了 16 年以上

摘要 代表海洋保护区 (MPA) 现有生物多样性模式的空间保护计划应该能够适应 10 到 20 年的变化,而 MPA 计划通常会在这个时间尺度上保留。使用来自已检测到因海洋变暖而发生变化的海洋保护区的数据,可以帮助讨论如何提高规划的时间稳健性。我们的目标是确定用于开发栖息地分类系统 (HCS) 作为海洋保护区规划中粗略生物多样性替代品的鱼类组合模式在澳大利亚变暖地区(东海岸亚热带)持续超过 16 年的时间框架。我们分析了孤岛海洋公园 (SIMP) 中鱼类组合模式的持续性/变化,在那里已检测到与海洋变暖相关的物种变化和栖息地变化。使用流动定时计数在 12 个地点记录了 16 年(2001-2017 年)的鱼类相对丰度。在这 16 年期间保持了强烈的跨大陆架模式,其中包括一些大规模干扰(破坏性风暴、2016 年大规模珊瑚白化事件)。这些广泛的组合模式的总体持久性表明,精心设计的 HCS 可以成为粗略表示十年尺度变暖世界中生物多样性模式的强大工具。在某些类别中检测到“热带化”,表明在这些和十年计划之外需要额外的规划策略。这些广泛的组合模式的总体持久性表明,精心设计的 HCS 可以成为粗略表示十年尺度变暖世界中生物多样性模式的强大工具。在某些类别中检测到“热带化”,表明在这些和十年计划之外需要额外的规划策略。这些广泛的组合模式的总体持久性表明,精心设计的 HCS 可以成为粗略表示十年尺度变暖世界中生物多样性模式的强大工具。在某些类别中检测到“热带化”,表明在这些和十年计划之外需要额外的规划策略。
更新日期:2019-04-01
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