A turtle population study in an isolated urban wetland complex in Ontario reveals a few surprises
A turtle population study in an isolated urban wetland complex in Ontario reveals a few surprises
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DOI：
10.1139/facets-2019-0046
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发表时间：
2019-11-16
期刊：
影响因子：
3.1
通讯作者：
MacDonald, Suzanne E.
中科院分区：
文献类型：
--
作者：
Dupuis-Desormeaux, Marc;D'Elia, Vince;MacDonald, Suzanne E.
我们报告的第一个标记的淡水龟在一个孤立的城市湿地复杂的调查结果，在加拿大发展最快的城市之一。虽然我们发现海龟在每个调查的湿地，海龟的密度和组合在较小的湿地显着不同，比在较大的湿地机构。我们还记录了两种海龟，被认为是缺席了这个湿地复合体，北方地图龟和东部麝香龟。我们注意到，一个湿地，是由一个高流量的道路一分为二显示男性倾斜的性别比例在人口的米德兰彩绘龟，但不是在人口的东部啮龟。总体而言，湿地复合体内的性比并不偏态。这些结果加强了以前对同一复合体中单个湿地的研究的结论，该研究发现道路死亡率与米德兰彩龟的男性倾斜性别比例之间存在相关性。我们讨论人口的来源和复杂的内汇和保护陆上走廊，支持海龟的安全运动在这个省重要的湿地复杂的重要性。[图形]。
We report on the results of the first mark-recapture survey of freshwater turtles in an isolated urban wetland complex in one of Canada's fastest growing municipalities. Although we found turtles in every surveyed wetland, the density and assemblage of turtles in smaller wetlands were significantly different than in larger wetland bodies. We also documented two species of turtles that were thought to be absent from this wetland complex, the Northern Map turtle and Eastern Musk turtle. We noted that a wetland that was bisected by a high-traffic road showed a male-skewed sex ratio in the population of Midland Painted turtles but not in the population of Eastern Snapping turtles. As a whole, the sex ratios inside the wetland complex were not skewed. These results reinforce the conclusions of a previous study of a single wetland within this same complex that had found a correlation between road mortality and a male-skewed sex ratio in Midland painted turtles. We discuss population sources and sinks within the complex and the importance of protecting the overland corridors that support the safe turtle movements within this provincially significant wetland complex.[GRAPHICS].