Spatial patterns of snake diversity in an urban area of north-east Brazil

IF 1.1 4区 生物学 Q3 ZOOLOGY Herpetological Journal Pub Date : 2019-10-01 DOI:10.33256/29.4.274281
R. França
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引用次数: 6

Abstract

The distribution of animal populations within an assemblage includes a wide variety of patterns, which are fundamental to understanding population dynamics and aid in conservation actions. We examined a snake assemblage in an urban area to describe species distribution patterns and to identify which places are more likely to contain snakes, both venomous and non-venomous. The study was conducted in the urban area of the municipality of Rio Tinto in north-east Brazil. We used a geostatistical modelling technique called ordinary kriging to identify which places were more likely to contain snakes, and a statistical spatial method (average nearest neighbour distance) to detect distribution patterns of snake species within the study area. A total of 291 individuals distributed among 28 species were recorded. The snakes were found in streets, homes, churches, university campus, streams, and even in local supermarkets. Ordinary kriging showed that the area of distribution of individuals was concentrated at three distinct points located in the centre of the urban area. The significant results of the average nearest neighbour distance analysis showed a clustered distribution for two species and dispersed distributions for eight species. Information on urban sites where snakes are more likely to be found is important not only for conservation, but also to help local citizens better understand and live amongst snakes
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巴西东北部城市蛇类多样性的空间格局
动物种群在一个群落中的分布包括各种各样的模式,这是理解种群动态和帮助保护行动的基础。我们研究了一个城市地区的蛇群,以描述物种分布模式,并确定哪些地方更有可能包含蛇,无论是有毒的还是无毒的。这项研究是在巴西东北部的里约热内卢Tinto市的市区进行的。我们使用了一种称为普通克里格的地质统计学建模技术来确定哪些地方更有可能包含蛇,并使用统计空间方法(平均最近邻距离)来检测研究区域内蛇种的分布模式。共有291只,分布在28个种中。人们在街道、家庭、教堂、大学校园、溪流甚至当地超市里都能找到这些蛇。普通克里格分析表明,个体的分布区域集中在位于城市中心的三个不同的点上。平均最近距离分析结果显示,2种为聚类分布,8种为分散分布。关于蛇更容易被发现的城市地点的信息不仅对保护很重要,而且对帮助当地居民更好地了解蛇并与蛇生活在一起也很重要
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来源期刊
Herpetological Journal
Herpetological Journal 生物-动物学
CiteScore
2.40
自引率
10.00%
发文量
25
审稿时长
>12 weeks
期刊介绍: The Herpetological Journal is the Society''s prestigious quarterly scientific journal.
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