Effects of artificial water provision on migratory blue wildebeest and zebra in the Makgadikgadi Pans ecosystem, Botswana
Effects of artificial water provision on migratory blue wildebeest and zebra in the Makgadikgadi Pans ecosystem, Botswana
复制标题
人工供水对博茨瓦纳马卡迪卡迪潘斯生态系统中迁徙的蓝角马和斑马的影响
DOI：
10.1016/j.biocon.2022.109502
复制
发表时间：
2022
影响因子：
5.9
通讯作者：
Bennitt E
中科院分区：
文献类型：
--
作者：
Bennitt E
在受水资源支配的迁徙性热带生态系统中，人为改变水资源可影响食草动物的分布和移动。博茨瓦纳的Makgadikgadi Pans维持着大约10，000只蓝色角马（Connochaetecomalinus）和24，000只平原斑马（Equus quagga），它们在有永久水源的旱季范围和有多产草的雨季范围之间迁徙。在雨季范围内，通过抽取一些天然水坑，建立了人工供水点。我们结合了航空调查和GPS项圈的数据，分别在20和12斑马前和后AWP安装，和17后AWP角马，测试假设有关的大规模和小规模的运动模式。后AWP，较高比例的角马，但不是斑马，在雨季范围在旱季。后AWP斑马迁移到他们的雨季范围发生更长的降雨停止后比前AWP，虽然这一时期仍然短于角马（一个月相比，三个）。接近水坑的空间利用概率的影响随季节变化的两个物种，并遵循相反的趋势，这表明资源分区或竞争效应。这两个物种访问AWPs比自然水坑，特别是角马在旱季。角马的运动模式更容易受到AWPs的干扰，这可能会导致居住的发展，降低人口的弹性。管理干预措施，如AWPs，可以在不同程度上影响物种，因此，应评估几个物种的反应，以确定迁移生态系统的恢复力和功能的干扰程度。
In migratory tropical ecosystems governed by water availability, artificially altering water availability can affect herbivore distribution and movement. The Makgadikgadi Pans, Botswana, sustains approximately 10,000 blue wildebeest (Connochaetestaurinus) and 24,000 plains zebra (Equus quagga) migrating between a dry season range with permanent water and a rainy season range with productive grasses. Artificial water points (AWPs) have been created by pumping some natural waterholes in the rainy season range. We combined data from aerial surveys and from GPS collars on 20 and 12 zebra pre- and post-AWP installation, respectively, and on 17 wildebeest post-AWP, to test hypotheses relating to large- and small-scale movement patterns. Post-AWP, a higher proportion of wildebeest, but not zebra, were in the rainy season range during the dry season. Post-AWP zebra migration to their rainy season range occurred longer after rainfall cessation than pre-AWP, though this period was still shorter than that of wildebeest (one month compared to three). The effect of proximity to waterholes on probability of space use varied seasonally for both species and followed opposing trends, suggesting resource partitioning or competition effects. Both species visited AWPs more than natural waterholes, particularly wildebeest in the dry season. Wildebeest movement patterns were more likely to be disturbed by AWPs, which could cause the development of residency and reduce population resilience. Management interventions, such as AWPs, can affect species to different extents, so the responses of several species should be assessed to determine the level of disturbance to migratory ecosystem resilience and functioning.
登录
查看更多内容
通过水点控制优化大型野生动物保护区的野生动物管理：生物经济分析。
影响因子：
8.7
作者：
E. Mwakiwa;W. F. de Boer;J. Hearne;R. Slotow;F. van Langevelde;Mike Peel;C. C. Grant;Y. Pretorius;J. D. Stigter;A. Skidmore;I. Heitkönig;H. J. de Knegt;E. Kohi;N. Knox;H. Prins
通讯作者：
H. Prins
南部非洲陆地生物多样性对人为气候变化的潜在反应
DOI：
--
发表时间：
2011
期刊：
影响因子：
--
作者：
G. Midgley;W. Thuiller
通讯作者：
W. Thuiller
影响因子：
6.8
作者：
AKAIKE, H
通讯作者：
AKAIKE, H
影响因子：
4.8
作者：
Redfern, JV;Grant, R;Getz, WM
通讯作者：
Getz, WM
供水改变了喀拉哈里中部角马的适应性栖息地选择和恢复能力
DOI：
--
发表时间：
2018
期刊：
影响因子：
--
作者：
Moses Selebatso;E. Bennitt;G. Maude;R. Fynn
通讯作者：
R. Fynn