追寻阿根廷灰锦鹿(Mazama gouazoubira)的足迹:新的地点记录、活动模式和栖息地使用情况

Q3 Agricultural and Biological Sciences
Therya Pub Date : 2024-01-30 DOI:10.12933/therya-24-5158
Roco Fleitas Quintana, Daniela Rodríguez, Diego Zeverini, Mariano Tagua, Jesús Luis Lucero, Carolina Szymañski
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引用次数: 0

摘要

褐锦鹿(Mazama gouazoubira)是一种新热带有蹄类动物,栖息于南美洲多个国家。在阿根廷,它分布在该国北部地区,而历史记录中并未提及门多萨省有这种动物。然而,在《阿根廷哺乳动物分类》(2019 年)中,门多萨东北部被认为是该物种的潜在分布区。在这项研究中,我们确认了门多萨省(德萨瓜德罗地区--RAMSAR遗址)存在棕色锦鹿,并对其活动模式和栖息地偏好进行了评估。我们在盐滩、灌木丛和森林三种环境中建立了 1 平方公里的网格。在每个网格中放置一个照相机陷阱(n = 38),在 2022 年 10 月至 2023 年 4 月期间活动 55 天,进行动物调查。此外,我们还根据 LANDSAT-8 图像计算了归一化植被指数(NDVI)值,作为每个网格的植被覆盖率估算指标。我们从相机运行的 51,072 小时(2,090 夜/捕获器 = 55 夜 * 38 台相机)采样工作中获得了 11 个个体(5 雄 6 雌)的 25 条独立记录。雄性个体的识别依据是鹿角的存在、大小、尺寸和质地,雌性个体的识别依据是体型和妊娠状况。在活动模式方面,我们观察到这些动物在下午(16 至 19 小时)和上午(8 至 9 小时)最为活跃,避开了太阳辐射最强的时刻(瑞利检验 r = 0.99,p < 0.001)。三种环境的 NDVI 差异很大(Chisq = 32.98;p < 0.001),森林的植被覆盖率最高。最后,我们使用二项分布的广义线性模型来评估植被对褐锦鹿出现的影响。我们发现,NDVI 值越高,鹿出现的概率就越高(z = 2.27;p < 0.05)。这些结果扩大了物种的分布范围,增加了门多萨省哺乳动物的多样性,为拟议中的德萨瓜德罗保护区(位于 RAMSAR 站点 Lagunas de Guanacache, Desaguadero y del Bebedero)的规划带来了附加价值。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Following the trail of the grey brocket deer (Mazama gouazoubira) in Argentina: new locality records, activity patterns and habitat use
The brown brocket deer (Mazama gouazoubira) is a species of neotropical ungulate that inhabits several countries in South America. In Argentina, it is distributed in the northern portion of the country, while historical records do not mention it in the province of Mendoza. However, in the Categorization of Mammals of Argentina (2019), the NE of Mendoza is proposed as a potential distribution area of the species. In this work we confirm the presence of the brown brocket deer in the province of Mendoza (locality of Desaguadero - RAMSAR Site), and we also evaluate its activity patterns and habitat preferences. We established 1 km2 grids in three environments: salt flats, shrublands, and forests. A camera trap (n = 38) was placed in each grid, active for 55 days between October 2022 and April 2023 for fauna survey. In addition, NDVI values (Normalized Difference Vegetation Index) were calculated from LANDSAT-8 images as an estimator of vegetation cover for each grid. We obtained 25 independent records of 11 individuals (5 males and 6 females) from a sampling effort of 51,072 hours of camera operation (2,090 night/trap = 55 night * 38 camera). The males were individually identified based on the presence of antlers, their size, dimension and texture, while the females by their body size and gestation condition. In terms of activity patterns, we observed that these animals are most active in the afternoon (16 to 19 hs) and morning (8 to 9 hs), avoiding the moments of greatest solar radiation (Rayleigh-test r = 0.99, p < 0.001). NDVI was significantly different among the three environments (Chisq = 32.98; p < 0.001), with the forest having the highest vegetation cover. Finally, generalized linear models with binomial distribution were used to evaluate the effect of vegetation on the presence of brown brocket deer. We found that the higher the NDVI value, the higher the probability of presence of the deer (z = 2.27; p < 0.05). These results expand the distribution of the species and increase the diversity of mammals for Mendoza province, which generates added value to the planning of the proposed protected area for Desaguadero in the RAMSAR site Lagunas de Guanacache, Desaguadero y del Bebedero.
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来源期刊
Therya
Therya Agricultural and Biological Sciences-Animal Science and Zoology
CiteScore
1.60
自引率
0.00%
发文量
40
审稿时长
8 weeks
期刊介绍: THERYA aims to disseminate information and original and unpublished knowledge related to the study of mammals in all disciplines of knowledge. It is an open forum for teachers, researchers, professionals and students worldwide in which articles are published in Spanish and English.
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