Connectivity and edge effects increase bee colonization in an experimentally fragmented landscape

Connectivity and edge effects increase bee colonization in an experimentally fragmented landscape
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连通性和边缘效应增加了蜜蜂在实验性破碎景观中的殖民化

DOI:
10.1111/ecog.05299
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发表时间:
2021
期刊:
影响因子:
5.9
通讯作者:
Haddad, Nick M.
Haddad, Nick M.
中科院分区:
环境科学与生态学1区
文献类型:
--
作者:
Griffin, Sean R.;Haddad, Nick M.

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虽然景观走廊增加了许多动物和植物的扩散,但这些积极影响是否延伸到殖民化和建立碎片新种群的过程中,仍然是未知的。在实验破碎的景观工作,我们测试了两个方面的栖息地碎片改变走廊-连通性和边缘面积比-决定殖民模式的一个孤独的,腔巢蜂Megachile rotundata。我们发现,虽然连通性最初会影响巢址占用率,但边缘面积比最终决定了斑块占用和筑巢的最终模式,这可能是由于我们的重点物种对栖息地的选择。蜜蜂殖民地也较高的补丁,其首选的食物资源,花从豆科植物的丰度较高。我们的研究结果表明,在基于栖息地的保护中,考虑连通性和边缘对种群动态的影响是重要的。
Though landscape corridors increase dispersal of many animals and plants, it remains unknown whether these positive effects extend to the process of colonization and establishment of new populations in fragments. Working in experimentally fragmented landscapes, we tested how two aspects of habitat fragments altered by corridors – connectivity and edge‐to‐area ratio – determine patterns of colonization by a solitary, cavity‐nesting beeMegachile rotundata. We found that though connectivity initially affected rates of nest‐site occupation, edge‐to‐area ratio ultimately determined the final patterns of patch occupation and nest building, likely due to habitat selection by our focal species. Bee colonization was also higher in patches with higher abundances of their preferred food resources, flowers from the Fabaceae family. Our results show the importance of considering the effects of both connectivity and edge on population dynamics in habitat‐based conservation.
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