Community-based monitoring reveals low anthropogenic pressure on a game vertebrate population in a sustainable-use Amazonian protected area

IF 2.2 3区 环境科学与生态学 Q2 BIODIVERSITY CONSERVATION Environmental Conservation Pub Date : 2024-02-23 DOI:10.1017/s0376892924000031
Yasmin Maria Sampaio dos Reis, Maíra Benchimol
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Abstract

Summary Biodiversity systematic monitoring programmes have been expanding across the globe, especially in protected areas (PAs). Amongst sustainable-use PAs, medium- to large-sized mammals and birds comprise crucial groups to monitor, given their importance to forest functionality and subsistence for local residents. Here, we used 6 years of community-based monitoring data from a sustainable-use PA in the Brazilian Amazonia (Tapajós–Arapiuns Extractive Reserve) to examine the influence of anthropogenic stressors and time on the density and biomass of forest mammal and bird game species. We further assessed trends in population density of target groups over the period. A total of 1915 km of line-transect surveys were completed by trained local monitors along eight established transects, providing data from 12 medium-sized and five large-sized game genera. Generalized linear mixed models of all medium-sized species, all large species and four individual taxa (Tinamidae, Dasyproctidae, primates and Cervidae) showed that some species (e.g., Dasyprocta croconota) exhibited great density, whereas others (e.g., Tapirus terrestris and Tayassu pecari) were rarely detected. Anthropogenic variables did not affect the density and biomass of the overall medium-sized and large vertebrates. Dasyproctidae, Tinamidae and primates were the only taxa influenced by anthropogenic stressors, with negative influence occurring only for Tinamidae. Moreover, density of groups and taxa remained stable throughout the period in the Reserve, although the frequency of some species may indicate past population losses. Continuation of this monitoring programme is required to improve understanding of population fluctuations, but over the 6 years studied, game population density and biomass were not linked to anthropogenic stressors.
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以社区为基础的监测显示,在一个可持续利用的亚马逊保护区内,人为因素对一种野生脊椎动物种群造成的压力很小
摘要 生物多样性系统监测计划在全球范围内不断扩大,尤其是在保护区(PAs)内。在可持续利用的保护区中,中型到大型哺乳动物和鸟类是需要监测的重要类群,因为它们对森林功能和当地居民的生计非常重要。在此,我们利用巴西亚马孙地区一个可持续利用保护区(塔帕约斯-阿拉皮翁斯采伐保护区)6 年的社区监测数据,研究了人为压力因素和时间对森林哺乳动物和鸟类的密度和生物量的影响。我们还进一步评估了目标群体在此期间的种群密度变化趋势。训练有素的当地监测员沿着 8 条既定的横断面完成了总长 1915 公里的线性调查,提供了 12 种中型和 5 种大型野味的数据。对所有中型物种、所有大型物种和四个单个类群(Tinamidae、Dasyproctidae、灵长类和 Cervidae)的广义线性混合模型显示,一些物种(如 Dasyprocta croconota)密度很大,而其他物种(如 Tapirus terrestris 和 Tayassu pecari)则很少被发现。人为变数对整个中型和大型脊椎动物的密度和生物量没有影响。受人为胁迫因素影响的类群仅有蛙科(Dasyproctidae)、滇金丝猴科(Tinamidae)和灵长类,其中只有滇金丝猴科(Tinamidae)受到负面影响。此外,保护区内各类群和分类群的密度在整个期间保持稳定,尽管某些物种的出现频率可能表明其种群数量在过去有所减少。为了更好地了解种群的波动情况,需要继续开展这项监测计划,但在所研究的 6 年中,狩猎动物的种群密度和生物量与人为压力因素并无关联。
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来源期刊
Environmental Conservation
Environmental Conservation 环境科学-环境科学
CiteScore
5.20
自引率
3.70%
发文量
43
审稿时长
>36 weeks
期刊介绍: Environmental Conservation is one of the longest-standing, most highly-cited of the interdisciplinary environmental science journals. It includes research papers, reports, comments, subject reviews, and book reviews addressing environmental policy, practice, and natural and social science of environmental concern at the global level, informed by rigorous local level case studies. The journal"s scope is very broad, including issues in human institutions, ecosystem change, resource utilisation, terrestrial biomes, aquatic systems, and coastal and land use management. Environmental Conservation is essential reading for all environmentalists, managers, consultants, agency workers and scientists wishing to keep abreast of current developments in environmental science.
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