Species conservation under future climate change: the case of Bombusbellicosus, a potentially threatened South American bumblebee species
Species conservation under future climate change: the case of Bombusbellicosus, a potentially threatened South American bumblebee species
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未来气候变化下的物种保护：以 Bombusbellicosus 为例，一种可能受到威胁的南美大黄蜂物种
DOI：
10.1007/s10841-014-9740-7
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发表时间：
2015
影响因子：
1.9
通讯作者：
G. A. Melo
中科院分区：
文献类型：
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作者：
A. C. Martins;D. P. Silva;P. Marco;G. A. Melo
摘要蜜蜂保证了全球35%的粮食产量，但由于几种威胁，这一服务正在受到威胁。据报道，世界各地的熊蜂（熊蜂属）数量都在下降。Bombusbellicosus是南美洲报告的受威胁熊蜂的罕见案例之一。直到20世纪60年代，它曾经在巴西南部的草原上广泛分布。在此期间，该地区经历了越来越多的土地使用，导致蜜蜂的丰度和丰富度下降，并在当地消失的B.bellicosus。气候变化也被认为是导致B.bellicosus丰度下降的原因。在这里，我们使用物种分布模型来评估气候变化对巴西南部B.bellicosus分布的潜在影响，同时考虑当前和未来的气候情景。结果表明，适宜B.bellicosus生长的气候条件将向南退缩。巢内的蜡盖通常与居住在较冷气候的熊蜂物种有关。这种覆盖使巢内保持较高的温度，在未来温暖的气候下可能对物种有害。持续增长的土地使用是对这种传粉者的第二大威胁。本文的研究结果可能最终为南美洲的B.bellicosus保护提供理论依据和实际保护行动，特别是考虑到气候变化对该物种的潜在不利影响。
Abstract Bees ensure 35 % of global food production, but this service is endangered due to several threats. Declines in bumblebee populations (genus Bombus) have been reported worldwide. Bombusbellicosus is one of the rare cases of reported threatened bumblebees in South America. It was once widespread in southern Brazil’s grasslands until the 1960s. During that time, that area underwent increasing land use which led to a decrease in bee abundance and richness, and to local disappearance of B.bellicosus. Climate change is also believed to cause declines in the abundance of B.bellicosus. Here we used species distribution models to assess potential effects of climate changes on the distribution of B.bellicosus in southern Brazil, considering both current and future climate scenarios. Our results show that the suitable climatic conditions for B.bellicosus will retreat southwards. A wax cover inside its nests is usually related to Bombus species inhabiting cooler climates. This cover enables the maintenance of higher temperatures inside the nest and may be deleterious for the species under future warmer climates. Continuously growing land use is the second major threat to this pollinator. The results presented here may eventually provide theoretical grounds and enable practical conservation actions for B.bellicosus protection in South America, especially given the potential adverse effects of climate changes for this species.
DOI：
10.1098/rspb.2013.2440
发表时间：
2014-01-22
期刊：
Proceedings. Biological sciences
影响因子：
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作者：
Klatt BK;Holzschuh A;Westphal C;Clough Y;Smit I;Pawelzik E;Tscharntke T
通讯作者：
Tscharntke T