Urban specialization reduces habitat connectivity by a highly mobile wading bird.
Urban specialization reduces habitat connectivity by a highly mobile wading bird.
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DOI：
10.1186/s40462-020-00233-7
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发表时间：
2020-12-07
期刊：
影响因子：
4.1
通讯作者：
Hall RJ
中科院分区：
文献类型：
--
作者：
Teitelbaum CS;Hepinstall-Cymerman J;Kidd-Weaver A;Hernandez SM;Altizer S;Hall RJ
移动动物在栖息地运输营养物质和繁殖体，对食物网的功能和生态系统服务至关重要。城市化等人类活动可以改变动物的运动行为，包括场地保真度和资源利用。由于许多城市地区毗邻自然遗址，流动动物可能会将自然栖息地和城市栖息地联系起来。更广泛地说，了解城市地区的动物运动模式有助于预测城市扩张将如何影响高度流动的动物在生态过程中的作用。在这里，我们研究了一种季节性游牧涉禽，美国白鹭(Eudocimus Albus)在美国佛罗里达州南部的活动。白朱鹭是群居涉水鸟类，以水生猎物为食；近年来，一些朱鹭已经改变了它们的行为，开始在城市公园觅食，在那里它们由人喂养。我们使用空间网络方法来调查个人运动模式如何影响城市和非城市站点之间的连接。我们利用朱鹭在非繁殖季节的GPS跟踪数据建立了一个栖息地连通性网络，并将该网络与假设个体根据栖息地类型不分青红皂白地移动的模拟网络进行了比较。我们发现，观察到的网络比模拟网络连接得少，城市与城市和自然与自然的联系很强，使用城市站点的个人使用的栖息地变化最小。重要的是，少数同时使用城市和自然栖息地的朱鹭对互联互通做出了最大贡献。城市驯化野生动物的栖息地专门化可能会减少城市和自然地区之间的繁殖和营养交换，这既会对连接的有利影响(如基因流动)产生影响，也会对有害影响(如污染物或病原体的传播)产生后果。
Mobile animals transport nutrients and propagules across habitats, and are crucial for the functioning of food webs and for ecosystem services. Human activities such as urbanization can alter animal movement behavior, including site fidelity and resource use. Because many urban areas are adjacent to natural sites, mobile animals might connect natural and urban habitats. More generally, understanding animal movement patterns in urban areas can help predict how urban expansion will affect the roles of highly mobile animals in ecological processes. Here, we examined movements by a seasonally nomadic wading bird, the American white ibis (Eudocimus albus), in South Florida, USA. White ibis are colonial wading birds that forage on aquatic prey; in recent years, some ibis have shifted their behavior to forage in urban parks, where they are fed by people. We used a spatial network approach to investigate how individual movement patterns influence connectivity between urban and non-urban sites. We built a network of habitat connectivity using GPS tracking data from ibis during their non-breeding season and compared this network to simulated networks that assumed individuals moved indiscriminately with respect to habitat type. We found that the observed network was less connected than the simulated networks, that urban-urban and natural-natural connections were strong, and that individuals using urban sites had the least-variable habitat use. Importantly, the few ibis that used both urban and natural habitats contributed the most to connectivity. Habitat specialization in urban-acclimated wildlife could reduce the exchange of propagules and nutrients between urban and natural areas, which has consequences both for beneficial effects of connectivity such as gene flow and for detrimental effects such as the spread of contaminants or pathogens.
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影响因子：
3.9
作者：
Becker, Daniel J.;Teitelbaum, Claire S.;Hall, Richard J.
通讯作者：
Hall, Richard J.
影响因子：
3
作者：
Carrete, Martina;Tella, Jose L.
通讯作者：
Tella, Jose L.
影响因子：
0.3
作者：
Deng, J;Frederick, P
通讯作者：
Frederick, P
影响因子：
4.8
作者：
Coulon, A.;Aben, J.;Travis, J. M. J.
通讯作者：
Travis, J. M. J.
DOI：
10.1111/1365-2656.12418
发表时间：
2015-09
期刊：
The Journal of animal ecology
影响因子：
--
作者：
Farine DR;Whitehead H
通讯作者：
Whitehead H