Geographical range margins of many taxonomic groups continue to shift polewards

Geographical range margins of many taxonomic groups continue to shift polewards
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许多分类群的地理分布范围继续向极地移动

DOI:
10.1111/bij.12574
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发表时间:
2015
影响因子:
1.9
通讯作者:
Mason S
Mason S
中科院分区:
生物学2区
文献类型:
--
作者:
Mason S

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为了应对最近的气候变化,许多物种正在向极地扩展其前沿(凉爽)范围。在本研究中,我们调查了过去 40 年气候变化期间英国 21 个动物群的 1573 个分布在南方的物种的北部(凉爽)范围边缘的变化,更新了之前的工作。根据数据的可用性,在过去四十年的两个时间间隔内检查了范围裕度的变化。对于四个群体(鸟类、蝴蝶、巨蛾、蜻蜓和豆娘),有足够的数据来检查两个时间间隔内的范围裕度变化。我们发现大多数类群将其北部范围边缘向极地移动,并且这一发现并没有受到记录器工作变化的太大影响。当英国气候每十年分别变暖 0.21 和 0.28 °C 期间,第一个时间间隔的平均向北范围边缘变化为每十年 23 公里(N = 13 个分类群),第二个时间间隔为每十年 18 公里(N = 16 个分类群)。对于在两个时间间隔内检查的四个分类单元,有证据表明两个鳞翅目类群在最近的时间间隔内范围边缘变化率较高。我们的分析证实,在广泛的分类群中,范围边缘持续向极地移动。
Many species are extending their leading-edge (cool) range margins polewards in response to recent climate change. In the present study, we investigated range margin changes at the northern (cool) range margins of 1573 southerly-distributed species from 21 animal groups in Great Britain over the past four decades of climate change, updating previous work. Depending on data availability, range margin changes were examined over two time intervals during the past four decades. For four groups (birds, butterflies, macromoths, and dragonflies and damselflies), there were sufficient data available to examine range margin changes over both time intervals. We found that most taxa shifted their northern range margins polewards and this finding was not greatly influenced by changes in recorder effort. The mean northwards range margin change in the first time interval was 23 km per decade (N= 13 taxonomic groups) and, in the second interval, was 18 km per decade (N= 16 taxonomic groups) during periods when the British climate warmed by 0.21 and 0.28 °C per decade, respectively. For the four taxa examined over both intervals, there was evidence for higher rate of range margin change in the more recent time interval in the two Lepidoptera groups. Our analyses confirm a continued range margin shift polewards in a wide range of taxonomic groups.
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