Regional climatic warming drives long-term community changes of British marine fish
Regional climatic warming drives long-term community changes of British marine fish
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DOI：
10.1098/rspb.2003.2651
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发表时间：
2004-03-22
影响因子：
4.7
通讯作者：
Hawkins, SJ
中科院分区：
文献类型：
--
作者：
Genner, MJ;Sims, DW;Hawkins, SJ
气候变化被认为是全球海洋鱼类数量丰度波动的原因，但对整个群落的影响却知之甚少。我们使用来自近海海洋（英吉利海峡，1913-2002年）和河口环境（布里斯托尔海峡，1981-2001年）的独立数据集，研究了区域气候变化对两种鱼类群落的影响。结果表明，气候变化对群落组成有显著影响。每个组合包含一个优势种子集，其丰度与年平均海面温度密切相关。然而，物种的纬度范围并不能很好地预测物种水平的响应，同一物种在不同的地点之间并没有表现出一致的趋势。这表明，在一个区域内，同一物种的种群对气候变化的反应可能不同，这可能是由于额外的当地环境决定因素、种间生态相互作用和扩散能力。这将使物种水平的反应难以在地理上有差异的群落中预测。
Climatic change has been implicated as the cause of abundance fluctuations in marine fish populations worldwide, but the effects on whole communities are poorly understood. We examined the effects of regional climatic change on two fish assemblages using independent datasets from inshore marine (English Channel, 1913-2002) and estuarine environments (Bristol Channel, 1981-2001). Our results show that climatic change has had dramatic effects on community composition. Each assemblage contained a subset of dominant species whose abundances were strongly linked to annual mean sea-surface temperature. Species' latitudinal ranges were not good predictors of species-level responses, however, and the same species did not show congruent trends between sites. This suggests that within a region, populations of the same species may respond differently to climatic change, possibly owing to additional local environmental determinants, interspecific ecological interactions and dispersal capacity. This will make species-level responses difficult to predict within geographically differentiated communities.