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The interplay of climate and land use change affects the distribution of EU bumblebees

机译:气候和土地利用变化的相互作用影响着欧盟大黄蜂的分布

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摘要

Bumblebees in Europe have been in steady decline since the 1900s. This decline is expected to continue with climate change as the main driver. However, at the local scale, land use and land cover (LULC) change strongly affects the occurrence of bumblebees. At present, LULC change is rarely included in models of future distributions of species. This study's objective is to compare the roles of dynamic LULC change and climate change on the projected distribution patterns of 48 European bumblebee species for three change scenarios until 2100 at the scales of Europe, and Belgium, Netherlands and Luxembourg (BENELUX). We compared three types of models: (1) only climate covariates, (2) climate and static LULC covariates and (3) climate and dynamic LULC covariates. The climate and LULC change scenarios used in the models include, extreme growth applied strategy (GRAS), business as might be usual and sustainable European development goals. We analysed model performance, range gain/loss and the shift in range limits for all bumblebees. Overall, model performance improved with the introduction of LULC covariates. Dynamic models projected less range loss and gain than climate-only projections, and greater range loss and gain than static models. Overall, there is considerable variation in species responses and effects were most pronounced at the BENELUX scale. The majority of species were predicted to lose considerable range, particularly under the extreme growth scenario (GRAS; overall mean: 64% ± 34). Model simulations project a number of local extinctions and considerable range loss at the BENELUX scale (overall mean: 56% ± 39). Therefore, we recommend species-specific modelling to understand how LULC and climate interact in future modelling. The efficacy of dynamic LULC change should improve with higher thematic and spatial resolution. Nevertheless, current broad scale representations of change in major land use classes impact modelled future distribution patterns.
机译:自1900年代以来,欧洲的大黄蜂一直在稳定下降。预计这种下降将以气候变化为主要驱动因素继续。但是,在地方范围内,土地利用和土地覆被(LULC)的变化极大地影响了大黄蜂的发生。目前,LULC的变化很少包含在物种的未来分布模型中。这项研究的目的是比较欧洲,比利时,荷兰和卢森堡(BENELUX)在3100年前的三种变化情景下,动态LULC变化和气候变化在48种欧洲大黄蜂物种预计分布模式中的作用。我们比较了三种类型的模型:(1)仅气候协变量,(2)气候和静态LULC协变量,以及(3)气候和动态LULC协变量。模型中使用的气候和LULC变化方案包括极端增长应用策略(GRAS),可能的惯常业务和可持续的欧洲发展目标。我们分析了所有大黄蜂的模型性能,范围增益/损耗以及范围限制的变化。总体而言,通过引入LULC协变量可以提高模型性能。动态模型预测的距离损失和增益比纯气候预测要少,而距离损失和增益的预测要大于静态模型。总体而言,在BENELUX规模上,物种反应存在很大差异,且影响最为明显。预计大多数物种将丧失相当大的范围,特别是在极端增长情况下(GRAS;总体平均值:64%±34)。模型模拟预测了BENELUX尺度下的许多局部灭绝和相当大的范围损失(总体平均值:56%±39)。因此,我们建议进行特定物种的建模,以了解LULC和气候在未来的建模中如何相互作用。动态LULC更改的效果应通过更高的主题和空间分辨率来提高。然而,当前主要土地利用类别变化的大规模表述会影响未来的分配模式。

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