Terrestrial mammal responses to habitat structure and quality of remnant riparian forests in an Amazonian cattle-ranching landscape
Terrestrial mammal responses to habitat structure and quality of remnant riparian forests in an Amazonian cattle-ranching landscape
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陆地哺乳动物对亚马逊流域牧场景观中残留河岸森林栖息地结构和质量的反应
DOI：
10.1016/j.biocon.2016.11.033
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发表时间：
2017
影响因子：
5.9
通讯作者：
Zimbres B
中科院分区：
文献类型：
--
作者：
Zimbres B
1970 年至 2010 年巴西亚马逊地区的大规模森林砍伐造成了约 1.5 Mha 的碎片化区域，称为“森林砍伐弧”。巴西各地的农民和牧场主都被法律要求在其土地内划出河岸森林地带，但最近的立法变化放宽了这些河岸森林的最低强制性条件。在这种背景下，我们评估了河岸森林残余物作为亚马逊流域南部广阔的破碎景观中中型至大型陆地哺乳动物的景观连接器的功能作用。我们选择了 38 个河岸林带和连续森林内的 5 个河岸地点，沿每个河岸带安装了 4 到 5 个相机陷阱（199 个相机陷阱站），并在 2013 年和 2014 年旱季每个站对陆地哺乳动物群进行了 60 天的采样。我们比较了连续森林和高度破碎森林中哺乳动物对河岸森林的利用，并检查了走廊宽度、走廊栖息地的影响结构和景观环境对哺乳动物物种丰富度、组成和功能多样性的影响，所有这些在连续森林中都高于河岸残余物。走廊类型之间的功能多样性差异与性状无关，并由物种丰富度差异介导。森林栖息地退化与总体物种丰富度降低有关，而森林专家在日益宽阔的走廊中物种更加丰富。成分变化表明，森林砍伐和森林退化有利于森林栖息地特异性较低的耐基质物种。我们展示了河岸走廊森林哺乳动物的潜在景观连通性作用，其宽度和森林退化状况是全群落响应的关键预测因素。我们提供证据证明这些残留河岸带对森林脊椎动物的重要性，加强了科学论据，有助于证明最近陷入困境的巴西维持有效河岸走廊的法律要求的合理性。
Extensive 1970–2010 deforestation in the Brazilian Amazon has generated a ~ 1.5 Mha fragmented region known as the ‘arc of deforestation’. Farmers and cattle ranchers throughout Brazil are legally required to set-aside riparian forest strips within their landholdings, but recent legislative changes have relaxed the minimum mandatory conditions of these riparian forests. In this context, we assessed the functional role of riparian forest remnants as landscape connectors for medium to large-bodied terrestrial mammals in a vast fragmented landscape of southern Amazonia. We selected 38 riparian forest strips and five riparian sites within continuous forest, installed four to five camera-traps along each riparian zone (199 camera-trap stations), and sampled the terrestrial mammal assemblage for 60 days per station during the dry seasons of 2013 and 2014. We compared mammal use of riparian forests within both continuous and highly fragmented forests, and examined the effects of corridor width, corridor habitat structure, and landscape context on mammal species richness, composition, and functional diversity, all of which were higher in continuous forests than in riparian remnants. Functional diversity differences between corridor type was trait-independent and mediated by differences in species richness. Forest habitat degradation was associated with overall lower species richness, whereas forest specialists were more species-rich in increasingly wider corridors. Compositional shifts indicate that deforestation and forest degradation favours matrix-tolerant species with lower levels of forest habitat specificity. We show the potential landscape connectivity role for forest mammals of riparian corridors, whose width and forest degradation status are key predictors of community-wide responses. We provide evidence on the importance of these relict riparian strips to forest vertebrates, strengthening the scientific arguments that help justify the recently embattled legal requirements to maintain effective riparian corridors in Brazil.
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影响因子：
3.7
作者：
Meek PD;Ballard GA;Fleming PJ;Schaefer M;Williams W;Falzon G
通讯作者：
Falzon G
治理对巴西农业和保护土地可用性的影响。
影响因子：
11.4
作者：
G. Sparovek;A. Barretto;M. Matsumoto;G. Berndes
通讯作者：
G. Berndes
DOI：
10.1073/pnas.100126797
发表时间：
2000-05-23
影响因子：
11.1
作者：
Andelman, SJ;Fagan, WF
通讯作者：
Fagan, WF
破碎的亚马逊森林景观中的人类与野生动物冲突：大型猫科动物掠夺牲畜的决定因素
DOI：
--
发表时间：
2006
期刊：
影响因子：
--
作者：
Fernanda Michalski;R. L. P. Boulhosa;A. Faria;Carlos A. Peres
通讯作者：
Carlos A. Peres
巴西亚马逊原始和次生林的大型脊椎动物群落
影响因子：
1.4
作者：
Luke Parry;J. Barlow;C. Peres
通讯作者：
C. Peres