Idiosyncratic trends of woodland invertebrate biodiversity in Britain over 45 years
Idiosyncratic trends of woodland invertebrate biodiversity in Britain over 45 years
复制标题
45 年来英国林地无脊椎动物生物多样性的特殊趋势
DOI：
10.1111/icad.12685
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发表时间：
2023
影响因子：
3.5
通讯作者：
Bowler D
中科院分区：
文献类型：
--
作者：
Bowler D
在过去的一个世纪里，英国的林地覆盖率有所增加，并将通过旨在应对气候变化的林地创造计划进一步增加。然而，林地覆盖率增加对物种，特别是无脊椎动物的广泛影响还没有得到全面的评估。在这里，我们使用专业记录协会收集的物种出现记录，量化了英国21个广泛分类类群中2762种无脊椎动物的林地关联度。然后，我们将物种的林地关联度与1970年至2015年间发表的长期全国分布趋势的估计值关联起来。在所有的分类群中，29%的物种与阔叶林地覆盖呈正相关，而27%的物种与阔叶林地覆盖呈负相关。与阔叶林地相关的物种有较正的长期分布趋势的轻微趋势，但这种影响没有太大的解释力。对于15%的物种，我们发现了与阔叶林地覆盖的非单调关联，因此它们的出现在中间覆盖水平达到顶峰。与单调的林地正关联或负关联物种相比，中等盖度物种具有更多的正向长期分布趋势。我们的研究结果表明，尽管林地覆盖度增加，但林地无脊椎动物并没有持续增加。虽然由于我们使用了不同的发生记录，因此有必要谨慎一些，但与林地相关的物种分布趋势的相当大的差异可以解释为林地物种的高度多样性及其利用林地生境的方式。创造林地，或增加总体上的树木覆盖率，可能会对物种产生特殊的影响，这取决于新林地的创建和管理方式。
Woodland cover in Britain has increased over the past century and is set to increase further through woodland creation schemes aiming to tackle climate change. Nonetheless, the wider repercussions of increasing woodland cover for species, especially invertebrates, have not been comprehensively assessed.Here, we quantified the woodland associations of 2762 invertebrate species in Britain across 21 broad taxon groups using species occurrence records collected by specialist recording societies. We then related the strength of species' woodland associations to published estimates of their long‐term national distribution trends between 1970 and 2015.Across all taxa, 29% of species were positively associated with broadleaf woodland cover, whereas 27% of species were negatively associated. There was a slight tendency for species associated with broadleaf woodland to have more positive long‐term distribution trends, but the effect had little explanatory power. For 15% of species, we detected a non‐monotonic association with broadleaf woodland cover, such that their occurrence peaked at intermediate levels of cover. Intermediate‐cover species had more positive long‐term distribution trends than species with monotonic positive or negative woodland associations.Our findings suggest that woodland invertebrates have not consistently increased, despite the increases in woodland cover. While some caution is warranted owing to our use of heterogeneous occurrence records, the considerable variation in distribution trends of woodland‐associated species could be explained by the high diversity of woodland species and ways in which they use woodland habitat. Woodland creation, or increasing tree cover in general, could have idiosyncratic impacts on species, depending on how new woodlands are created and managed.