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首页> 外文期刊>Chelonian conservation and biology >Habitat Use by Five Turtle Species in the Middle Mississippi River
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Habitat Use by Five Turtle Species in the Middle Mississippi River

机译：密西西比河中部的五个海龟物种的栖息地利用

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摘要

Turtles face unique conservation challenges in modern modified river systems. Despite their ecological importance, gaps in knowledge still exist that may hinder their conservation. Turtle by-catch data from the US Army Corps of Engineers' Long-Term Resource Monitoring Program were analyzed for 5 turtle species (false map turtle, Graptemys pseudogeographica; red-eared slider, Trachemys scripta; common snapping turtle, Chelydra serpentina; smooth softshell turtle, Apalone mutica; and spiny softshell turtle, Apalone spinifera) to better understand macrohabitat and mesohabitat use. These species demonstrated differences in habitat use between various macrohabitats, substrata, velocity classes, and depth classes. Common snapping turtles and spiny softshell turtles were captured most often in tributaries, whereas red-eared sliders were captured most often in tributaries and closed side channels. Smooth softshell turtles used open side channels and unstructured main-channel borders most often. False map turtles were found in a variety of macrohabitats, but catch was highest near main-channel wing dikes. Shallow, low-velocity habitat seems most important to turtles. Turtle-specific sampling methods should be employed to learn more about turtles in the middle Mississippi River.
机译：乌龟在现代化的河流系统中面临独特的保护挑战。尽管它们具有生态重要性，但仍然存在可能阻碍其保护的知识空白。分析了美国陆军工程兵部队长期资源监测计划的海龟兼捕数据，分析了5种海龟种类（假图龟，Graptemys pseudogeographica；红耳滑块，Trachemys scripta；普通鳄龟，Chelydra serpentina；光滑的软壳） （Apalone mutica）和有刺的软壳乌龟（Apalone spinifera），以更好地了解大型栖息地和中栖息地的使用。这些物种证明了各种大型生境，地层，速度类别和深度类别在生境使用上的差异。常见的鳄龟和带刺的甲鱼在支流中捕获最多，而红耳滑子在支流和封闭侧沟中捕获最多。光滑的甲鱼经常使用开放式侧向通道和不规则的主通道边界。在各种大型栖息地中都发现了假地图龟，但在主河道堤防附近的捕获量最高。浅，低速的栖息地对海龟来说似乎最重要。应采用特定于海龟的采样方法来了解有关密西西比河中部海龟的更多信息。

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