Bumble bees show trait-dependent vulnerability to landscape simplification
Bumble bees show trait-dependent vulnerability to landscape simplification
复制标题
熊蜂对景观简化表现出特征依赖的脆弱性
DOI：
10.1007/s10531-015-1008-3
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发表时间：
2015
影响因子：
3.4
通讯作者：
Henrik G. Smith
中科院分区：
文献类型：
--
作者：
A. Persson;M. Rundlöf;Y. Clough;Henrik G. Smith
农业集约化导致蜜蜂授粉者的大规模损失，但尽管一些物种受到负面影响，但其他物种似乎能够承受变化的条件。有人认为，某些形态、生态和生活史特征使某些物种更容易受到景观变化的影响。关于哪些特征使物种脆弱以及为什么脆弱的信息可能有助于保护正在衰退的物种。我们对与饮食广度、运动和筑巢习惯相关的多种特征如何减轻熊蜂对景观简化的脆弱性进行了全面分析。我们调查了大黄蜂在鲜花丰富的非作物栖息地，无论是复杂的景观（与非作物栖息地接壤的小农田），或简单的景观（与较大的领域，因此较少的非作物栖息地）。我们分析了景观类型是否与蜂群大小、蜂王出现日期、蜂群生命周期长度、筑巢生境、胸部宽度、喙长或胸部和喙的变异性相互作用，以解释熊蜂的丰度。与复杂的景观相比，简单的工作人员和男性的物种与地面上的巢，小规模的殖民地和长殖民地周期相对较少。简单的景观举办较少的男性晚出现的物种和物种的高度可变的喙长度。这表明筑巢栖息地和食物资源的时空可用性作为熊蜂的生态过滤器。当校正系统发育相关性时，与筑巢栖息地和女王出现相关的群体大小，表明景观简化通过对性状组合的影响起作用。我们的研究结果有保护的后果表明，下降熊蜂物种可以支持提供足够的筑巢栖息地和首选的植物物种在整个季节和筑巢栖息地的短距离内，允许利用也有殖民地的物种与工人很少。
Agricultural intensification has resulted in large-scale loss of bee pollinators, but while some species have been negatively affected others seem to endure changed conditions. It has been suggested that certain morphological, ecological and life-history traits make some species more vulnerable to landscape changes. Information on which traits make species vulnerable and why may aid conservation of declining species. We performed a comprehensive analysis of how multiple traits related to diet breadth, movement and nesting habits moderate vulnerability of bumble bees to landscape simplification. We surveyed bumble bees in flower-rich non-crop habitats in either complex landscapes (with small crop fields bordered by non-crop habitats), or simple landscapes (with larger fields and therefore less non-crop habitats). We analysed if landscape type interacted with colony size, queen emergence date, colony life-cycle length, nesting habitat, thorax width, proboscis length or variability in thorax and proboscis, to explain bumble bee abundances. Workers and males of species with above-ground nests, small sized colonies and long colony cycle were relatively less abundant in simple compared to in complex landscapes. Simple landscapes hosted fewer males of late emerging species and species with highly variable proboscis length. This suggests that both nesting habitat and spatio-temporal availability of food resources act as ecological filters for bumble bees. Colony size correlated with nesting habitat and queen emergence when correcting for phylogenetic correlations, suggesting that landscape simplification acts through effects on combinations of traits. Our results have consequences for conservation by suggesting that declining bumble bee species can be supported by providing adequate nesting habitats and preferred plant species throughout the season and within short distance from nesting habitats, to allow utilisation also by species having colonies with few workers.
影响因子：
3.3
作者：
Heard, M. S.;Carvell, C.;Bourke, A. F. G.
通讯作者：
Bourke, A. F. G.