当前位置:
X-MOL 学术
›
Anim. Conserv.
›
论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Anthropogenic effects on the occurrence of medium‐sized mammals on the Brazilian Pampa biome
Animal Conservation ( IF 3.4 ) Pub Date : 2020-07-13 , DOI: 10.1111/acv.12618 D. O. Lima 1, 2 , C. Banks‐Leite 3 , M. L. Lorini 4 , E. Nicholson 5 , M. V. Vieira 2
Animal Conservation ( IF 3.4 ) Pub Date : 2020-07-13 , DOI: 10.1111/acv.12618 D. O. Lima 1, 2 , C. Banks‐Leite 3 , M. L. Lorini 4 , E. Nicholson 5 , M. V. Vieira 2
Affiliation
The Pampa biome within Brazil is one of South America’s most endangered biomes, due to conversion to croplands and use for cattle farming, with very limited coverage by protected areas. We investigated the impacts of (i) human population density, (ii) grassland and (iii) forest cover, (iv) protected areas and (v) mean size of farms on the occurrence patterns of 18 medium‐sized mammal species. We gathered information on the occurrence of these species between 2001 and 2010 from the literature and using unpublished field data from local experts. We obtained 1066 records, varying between 13 and 101 per species. Grassland cover had consistently positive effects on species richness (considering the 18 analyzed species), endangered species (considering 10 species that are endangered or data deficient) and occurrence of five individual species (considering each species separately). Human population density, forest cover and mean size of farms had diverse effects on individual species; however, both forest cover and human population density had positive effects on species richness and endangered species occurrence. For human population density this may result from areas suitable for people being similar to those suitable for many native species. The protected area network of the Pampa biome appeared ineffective at protecting the focal species, with predominantly negative effects on mammal occurrence. This inefficiency is probably related to its minor coverage; only 2.9% of the biome area is under any level of protection and only 0.4% under strict protection. To guarantee the conservation of mammal species in this threatened biome, it is important to protect the last remnants of native vegetation, mainly grasslands, avoiding their conversion into croplands.
中文翻译:
人为因素对巴西Pampa生物群系中型哺乳动物发生的影响
巴西境内的潘帕生物群系是南美最受威胁的生物群系之一,这归因于其已转变为农田并用于养牛业,保护区的覆盖面非常有限。我们调查了(i)人口密度,(ii)草地和(iii)森林覆盖,(iv)保护区和(v)农场平均规模对18种中型哺乳动物物种的发生方式的影响。我们从文献中收集了有关2001年至2010年间这些物种发生情况的信息,并使用了当地专家未发表的现场数据。我们获得了1066个记录,每个物种介于13到101之间。草地覆盖对物种丰富度具有持续的积极影响(考虑了18个分析物种),濒危物种(考虑到10个濒危物种或数据不足的物种)和5个单独物种的出现(分别考虑每个物种)。人口密度,森林覆盖率和农场平均规模对单个物种有不同的影响;然而,森林覆盖率和人口密度对物种丰富度和濒危物种的发生都有积极影响。对于人口密度而言,这可能是因为适合人类居住的区域与适合许多本地物种的区域相似。潘帕生物群系的保护区网络似乎在保护重点物种方面无效,主要对哺乳动物的发生产生负面影响。这种低效率可能与其覆盖范围较小有关;在任何级别的保护下,只有2.9%的生物群落面积,在严格保护下,只有0.4%。
更新日期:2020-07-13
中文翻译:
人为因素对巴西Pampa生物群系中型哺乳动物发生的影响
巴西境内的潘帕生物群系是南美最受威胁的生物群系之一,这归因于其已转变为农田并用于养牛业,保护区的覆盖面非常有限。我们调查了(i)人口密度,(ii)草地和(iii)森林覆盖,(iv)保护区和(v)农场平均规模对18种中型哺乳动物物种的发生方式的影响。我们从文献中收集了有关2001年至2010年间这些物种发生情况的信息,并使用了当地专家未发表的现场数据。我们获得了1066个记录,每个物种介于13到101之间。草地覆盖对物种丰富度具有持续的积极影响(考虑了18个分析物种),濒危物种(考虑到10个濒危物种或数据不足的物种)和5个单独物种的出现(分别考虑每个物种)。人口密度,森林覆盖率和农场平均规模对单个物种有不同的影响;然而,森林覆盖率和人口密度对物种丰富度和濒危物种的发生都有积极影响。对于人口密度而言,这可能是因为适合人类居住的区域与适合许多本地物种的区域相似。潘帕生物群系的保护区网络似乎在保护重点物种方面无效,主要对哺乳动物的发生产生负面影响。这种低效率可能与其覆盖范围较小有关;在任何级别的保护下,只有2.9%的生物群落面积,在严格保护下,只有0.4%。