人为压力对喀麦隆南部三片森林蝗虫物种多样性的影响

IF 1 Q3 ENTOMOLOGY
C. Oumarou Ngoute, S. Kekeunou, M. Lecoq, A. R. Nzoko Fiemapong, Philène Corine Aude Um Nyobe, C. B. Bilong Bilong
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引用次数: 10

摘要

蝗虫在热带雨林中高度多样化,被认为具有生态和保护的重要性。然而,对中非蝗虫的种群动态及其群落结构的研究仍然很少。我们在这里报道了人类活动对喀麦隆南部三个地区蝗虫物种多样性的影响:翁格特,更多的人为森林;扎马科,中度人工林;和Ngutadjap,一个没有那么人性化的森林。使用清扫网、象限和陷阱收集数据。我们使用五种统计方法分析了人类活动的压力如何影响蝗虫物种组成:(1)两种特定丰富度的非参数估计量,(2)丰度,(3)丰度分布模型,(4)α多样性指数和(5)β多样性指数。结果显示,两个地点之间的物种丰富度没有显著差异(Zamakoe有9个物种,Ongot和Ngutadjap各有7个物种)。在这些物种中,一个是Ongot和Zamakoe特有的,而一个、两个和三个物种分别只在Ongot、Ngutadjap和Zamako发现。蝗虫的数量和物种多样性随着人类对森林的压力而增加。我们注意到,与人类活动较少的Ngutadjap地区相比,受人类活动压力最大的两个地区(Ongot和Zamakoe)的蝗虫群落非常相似。最常见的蚱蜢物种,马泽果,在森林砍伐最多的地方最为丰富。物种多样性在人类化程度较高和中等的森林中最高,与人类化程度较低的森林相比,这两个蝗虫群落的多样性指数显示出更大的相似性。这项工作使我们能够更好地了解这些昆虫群落的参数如何反映喀麦隆南部的森林退化程度。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Effect of anthropogenic pressure on grasshopper (Orthoptera: Acridomorpha) species diversity in three forests in southern Cameroon
Grasshoppers are highly diversified in tropical rainforests and considered of both ecological and conservation importance. The population dynamics of central African grasshoppers, however, and the structure of their communities remain poorly studied. We report here on the impact of human activities on the diversity of grasshopper species from three localities in southern Cameroon: Ongot, more anthropized forest; Zamakoe, moderately anthropized forest; and Ngutadjap, less anthropized forest. Data were collected using sweep nets, quadrats, and pitfall traps. We analyzed how pressures from human activities affected the grasshopper species compositions using five statistical methods: (1) two non-parametric estimators for specific richness, (2) abundance, (3) abundance distribution model, (4) α diversity index, and (5) β diversity index. The results showed no significant differences in species richness between the sites (nine species at Zamakoe, seven each at Ongot and Ngutadjap). Among these species, one was specific to Ongot and Zamakoe, while one, two, and three species, respectively, were found only in Ongot, Ngutadjap, and Zamakoe. Abundance and species diversity of grasshoppers increased with anthropogenic pressure on the forests. We noticed a great similarity between the grasshopper communities of the two localities under the greatest anthropogenic pressure (Ongot and Zamakoe) compared to that of the less anthropized locality of Ngutadjap. The most common grasshopper species, Mazeagranulosa, was most abundant where deforestation was highest. Species diversity was highest in the more and moderately anthropized forests, and the diversity index showed greater similarity between these two grasshopper communities compared with that of the less anthropized forest. This work enables us to better understand how the parameters of these insect communities reflect the degree of forest degradation in southern Cameroon.
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来源期刊
Journal of Orthoptera Research
Journal of Orthoptera Research Agricultural and Biological Sciences-Insect Science
CiteScore
1.90
自引率
25.00%
发文量
20
审稿时长
12 weeks
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