Abstract Fish assemblages vary through time in both abundance and diversity, often due to changes in climate. The potential consequences of these changes on the larval phase need to be considered. In the Eastern English Channel, fish larvae of 30 taxa, from surveys conducted during spring in the nineties and in 2017 with bongo nets, were used to investigate seasonal and interannual changes in larval assemblages with different statistical tests and multivariate analyses (Outlying Mean Index, Principal Coordinate Analysis and variance partitioning). The major change observed was significant lower abundances in 2017 (in April and May) compared to the nineties. Most of the dominant taxa were two to three-fold less abundant in 2017 than the 1990s. We suggest that the reduced larval abundances in 2017 could be a consequence of lower adult abundances in the area from a switch from a colder to a warmer phase of the Atlantic Multidecadal Oscillation.

中文翻译：

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英吉利海峡东部鱼类浮游组合的最新变化

摘要 鱼类组合的丰度和多样性随时间而变化，这通常是由于气候变化所致。需要考虑这些变化对幼虫期的潜在后果。在英吉利海峡东部，90 年代春季和 2017 年使用邦戈网进行的调查中的 30 个分类群的鱼类幼虫被用于调查幼虫组合的季节性和年际变化，并采用不同的统计检验和多变量分析（离群平均指数，主坐标分析和方差划分）。与九十年代相比，观察到的主要变化是 2017 年（4 月和 5 月）的丰度显着降低。2017 年，大多数优势类群的数量比 1990 年代少了两到三倍。