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首页> 外文期刊>The Herpetological journal >Microhabitat use by the sand dune lizard Liolaemus multimaculatus in a pampean coastal area in Argentina
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Microhabitat use by the sand dune lizard Liolaemus multimaculatus in a pampean coastal area in Argentina

机译：沙丘蜥蜴Liolaemus multimaculatus在阿根廷黄褐色沿海地区的微生境利用

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摘要

The sand dune lizard (Liolaemus multimaculatus) is a vulnerable species, endemic to the Pampean coasts in Argentina,yet no studies exist on its preferences for microhabitats. This work has three primary goals: 1) to assess preferencesin microhabitat use in relation to their availability; 2) to evaluate differences in male, female and juvenile microhabitatuse; and 3) to describe the microhabitat structure required and preferred by lizards. The study was carried out at MarChiquita Provincial Nature Reserve, Buenos Aires Province, Argentina. We assessed microhabitat selection and evaluateddifferences in microhabitat use between individual categories, by applying null models. Magnitude of selection wasevaluated using Jacobs' index of selectivity. Spatial niche width and overlap were calculated using Hurlbert'smeasurement and Pianka's index respectively. Results showed that the sand dune lizard did not use microhabitatsaccording to their availability, but rather that it prefers microhabitats with low to medium vegetation cover, and tendsto avoid those with high or no vegetation cover. No differences between individual categories were found. Preferredmicrohabitats allow sand burying and rapid movements and offer refuges from predators. This study allows us to identifysuitable microhabitats for this species, thus contributing to the development of conservation plans.
机译：沙丘蜥蜴（Liolaemus multimaculatus）是一种易受伤害的物种，在阿根廷的庞贝山沿海特有，但尚无关于微生境的偏爱的研究。这项工作的三个主要目标是：1）评估微栖息地使用偏好与可用性的关系; 2）评估男性，女性和青少年微习惯的差异; 3）描述蜥蜴所需要和喜欢的微生境结构。这项研究是在阿根廷布宜诺斯艾利斯省的MarChiquita省级自然保护区进行的。我们通过应用空模型评估了微生境的选择，并评估了各个类别之间微生境的使用差异。使用Jacobs选择性指数评估选择的幅度。空间利基宽度和重叠度分别使用Hurlbert测量和Pianka指数计算。结果表明，沙丘蜥蜴没有根据其可利用性来使用微生境，而是偏爱植被覆盖度低至中度的微生境，而倾向于避免植被覆盖度高或没有的生境。没有发现各个类别之间的差异。首选的微生境可以掩埋沙子并快速移动，并提供食肉动物的庇护所。这项研究使我们能够确定适合该物种的微生境，从而有助于制定保护计划。

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