当前位置: X-MOL 学术Urban Ecosyst. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Where are the turtles when they are not? Underwater refuges used by Hydromedusa tectifera COPE, 1869 in a suburban stream
Urban Ecosystems ( IF 2.9 ) Pub Date : 2020-05-14 , DOI: 10.1007/s11252-020-01004-3
María B. Semeñiuk , María J. Cassano , Rocío M. Sánchez , Ezequiel Palumbo , Leandro Alcalde

Habitat requirements of Hydromedusa tectifera from an urban impacted stream from the Buenos Aires province, the Rodriguez stream, are here studied. We describe the type of underwater refuges, how they are used in different stream sections, stream margins, year season, size class and sex of the individuals, and analyze patterns of recurrence and aggregative use of refuges. Fieldwork was carried out from March 2017 to January 2018. Turtles were caught manually recording the following variables: site, transect and margin, sex, straight carapace length, and weight. Substrate types are differently used according to stream section, stream margin, year season and size class of individuals, but no difference was found between sexes. In the whole stream, most used refuges were the hollows on the margins (55.05%), followed by marginal aquatic vegetation (19.27%). Turtles of all class sizes and both sexes refuge into hollows on the stream margins. Despite different microhabitats provide refuge to turtles during all year seasons, hollows are the most important refuge during extreme cold and extreme hot seasons. In addition, turtle recaptures evidence a recurrence and aggregative pattern in the use of refuges. This information provides insight into the key aspects of the microhabitat requirements of the species and will be certainly useful in mitigating and preventing negative effects of the current stream management policies. It is worth highlighting the need to keep the stream margins unaltered to favor the presence of turtles in urban environments.



中文翻译:

乌龟不在的时候在哪里?Hydromedusa tectifera COPE在郊区溪流中使用的水下避难所,1869年

水母的生境需求本文研究了来自布宜诺斯艾利斯省受城市影响的河流Rodriguez河流。我们描述了水下避难所的类型,如何在不同的河段中使用它们,河边距,年季,个体的大小等级和性别,并分析了复发和避难所的综合使用方式。野外调查于2017年3月至2018年1月进行。人工捕获的乌龟记录了以下变量:地点,样带和边缘,性别,直甲壳长度和体重。根据溪流断面,溪流余量,年季节和个体大小等级,使用不同的基质类型,但性别之间没有发现差异。在整个河流中,最常用的避难所是边缘的空洞(55.05%),其次是边缘的水生植被(19.27%)。各种等级和性别的海龟躲在溪流边缘的空洞中。尽管全年都有不同的微生境为海龟提供庇护,但在极端寒冷和极端炎热的季节,空洞是最重要的庇护所。此外,海龟的重新捕获证明了在避难所中的复发和聚集现象。该信息提供了对物种微生境要求的关键方面的洞察力,对于减轻和防止当前河流管理政策的负面影响肯定有用。值得强调的是,有必要保持溪流边际不变,以有利于海龟在城市环境中的生存。在极端寒冷和极端炎热的季节,空洞是最重要的避难所。此外,海龟的重新捕获证明了在避难所中的复发和聚集现象。该信息提供了对物种微生境要求的关键方面的洞察力,对于减轻和防止当前河流管理政策的负面影响肯定有用。值得强调的是,有必要保持溪流边际不变,以有利于海龟在城市环境中的生存。在极端寒冷和极端炎热的季节,空洞是最重要的避难所。此外,海龟的重新捕获证明了在避难所中的复发和聚集现象。该信息提供了对物种微生境要求的关键方面的洞察力,对于减轻和防止当前河流管理政策的负面影响肯定有用。值得强调的是,有必要保持溪流边际不变,以有利于海龟在城市环境中的生存。该信息提供了对物种微生境要求的关键方面的洞察力,对于减轻和防止当前河流管理政策的负面影响肯定有用。值得强调的是,有必要保持溪流边际不变,以有利于海龟在城市环境中的生存。该信息提供了对物种微生境要求的关键方面的洞察力,对于减轻和防止当前河流管理政策的负面影响肯定有用。值得强调的是,有必要保持溪流边际不变,以有利于海龟在城市环境中的生存。

更新日期:2020-05-14
down
wechat
bug