Habitat selection and 3D space use partitioning of resident juvenile hawksbill sea turtles in a small Caribbean bay

Habitat selection and 3D space use partitioning of resident juvenile hawksbill sea turtles in a small Caribbean bay
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加勒比小海湾中幼年玳瑁海龟的栖息地选择和 3D 空间利用分区

DOI:
10.1007/s00227-021-03912-0
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发表时间:
2021
期刊:
影响因子:
2.4
通讯作者:
Jobsis, P. D.
Jobsis, P. D.
中科院分区:
生物学2区
文献类型:
--
作者:
Matley, J. K.;Johansen, L. K.;Klinard, N. V.;Eanes, S. T.;Jobsis, P. D.

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了解水生动物如何选择和分配资源提供了有关社区动态的相关信息,可用于帮助管理保护工作。极度濒危的玳瑁海龟(Eretmochelys imbricata)在其幼年发育的很长一段时间里都在沿海沃茨中度过。一个强大的倾向,保持居民在小面积,往往在高密度,提出了问题,青少年如何分区资源,包括选择栖息地和空间重叠之间的同种。使用36和41声接收器之间的1.5平方公里的研究地点,本研究量化了白天和黑夜的栖息地选择,以及二维和三维空间使用的23个少年Hawksbills在两个相邻的加勒比海觅食地-布鲁尔湾和Hawksbill湾,圣托马斯,美国维尔京群岛之间2015年和2018年。我们发现,珊瑚礁,岩石,人工dolosse形成机场跑道,是最强烈的选择栖息地的基础上资源选择指数。2D和3D中的个人活动空间在白天都比晚上大,尽管在这两个时期每个人都使用了海湾的相同部分。3D方法还显示了白天更深的空间使用。个体之间的活动空间的每周比较显示有限的重叠(平均95% UD重叠;白天:0.15(2D)和0.07(3D),晚上:0.11(2D)和0.03(3D)),这表明一定程度的资源分区或领土。本研究结果提供相关的空间利用信息的资源管理的幼年玳瑁,其中许多种群面临栖息地退化和人口下降。
Understanding how aquatic animals select and partition resources provides relevant information about community dynamics that can be used to help manage conservation efforts. The critically endangered hawksbill sea turtle (Eretmochelys imbricata) spends an extended part of its juvenile development in coastal waters. A strong proclivity to remain resident in small areas, often in high density, raises questions about how juveniles partition resources including selection of habitat and spatial overlap among conspecifics. Using between 36 and 41 acoustic receivers in the 1.5 km2study site, this study quantified day-and-night habitat selection, as well as 2D and 3D space use of 23 juvenile hawksbills within two adjacent Caribbean foraging grounds—Brewers Bay and Hawksbill Cove, St. Thomas, US Virgin Islands—between 2015 and 2018. We found that coral reef, rock, and the artificial dolosse forming an airport runway, were the most strongly selected habitats based on resource selection indices. Individual activity spaces in 2D and 3D were both larger during the day compared to night, although the same parts of the bay were used by each individual during both periods. The 3D approach also showed deeper space use during the day. Weekly comparisons of activity space between individuals showed limited overlap (mean 95% UD overlap; day: 0.15 (2D) and 0.07 (3D), night: 0.11 (2D) and 0.03 (3D)), suggesting some degree of resource partitioning or territoriality. Results from this study provide relevant space use information for resource management of juvenile hawksbills, in which many populations are facing habitat degradation and population declines.
美国佛罗里达州棕榈滩浅礁栖息地幼年大西洋绿海龟 (Chelonia mydas L.) 的活动范围和栖息地利用
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发表时间: 2013
期刊: PloS one
影响因子: 3.7
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