Hypoxia [O2 < 2.0 mL L−1 (87 μmol kg−1)] and severely hypoxic water masses [O2 < 0.5 mL L−1 (21.8 μmol kg−1)] are increasing in coastal marine ecosystems due to eutrophication and warming. Here, we investigate the response of the suboxic-tolerant endemic fish, Sufflogobius bibarbatus, to variations in the thermal and oxygen environment, as well as to predation pressure, using 22 yr worth of satellite and in situ data. We show that environmental variation and predation pressure affect the goby population, which has expanded over the last decade while that of horse mackerel has contracted. These changes co-occurred with a general warming in the north and central shelf areas (north of 24.5°S). Spring warming positively affected both goby and hake abundances, but not the horse mackerel, suggesting different responses to surface temperature. The goby habitat contracted when predators were abundant, particularly in the north, which is the fringe of its distributional area. The implications of the differential tolerance of gobies and their predators for climate variations are discussed.

中文翻译：

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纳米比亚胡须虾虎鱼及其主要鱼类捕食者的空间动态因气候和氧气供应而异

由于富营养化和变暖，沿海海洋生态系统中的缺氧 [O2 < 2.0 mL L-1 (87 μmol kg-1)] 和严重缺氧的水团 [O2 < 0.5 mL L-1 (21.8 μmol kg-1)] 正在增加。在这里，我们使用 22 年的卫星和原位数据研究耐缺氧特有鱼类 Sufflogobius bibarbatus 对热和氧环境的变化以及捕食压力的响应。我们表明环境变化和捕食压力会影响虾虎鱼种群，在过去十年中，虾虎鱼种群数量有所增加，而竹荚鱼的种群数量有所减少。这些变化与北部和中部陆架区（24.5°S 以北）的普遍变暖同时发生。春季变暖对虾虎鱼和无须鳕的数量都有积极影响，但对竹荚鱼没有影响，这表明对表面温度的反应不同。当捕食者丰富时，虾虎鱼栖息地收缩，特别是在北部，这是其分布区域的边缘。讨论了虾虎鱼及其捕食者对气候变化的不同耐受性的影响。