Many losers and few winners in dung beetle responses to Amazonian forest fragmentation
Many losers and few winners in dung beetle responses to Amazonian forest fragmentation
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粪甲虫对亚马逊森林破碎化的反应，输家多，赢家少
DOI：
10.1016/j.biocon.2023.110024
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发表时间：
2023
影响因子：
5.9
通讯作者：
Noble C
中科院分区：
文献类型：
--
作者：
Noble C
热带森林破碎化预计将导致依赖森林的物种（“输家”）的损失和耐扰物种（“赢家”）的增殖。在这里，我们使用多物种占用模型来量化破碎化对亚马逊蜣螂在物种和群落水平上的影响。我们研究了物种栖息地偏好与破碎化响应之间的关系，以了解破碎化响应的种间变化如何转化为α和β多样性的模式。我们在21个森林斑块和2个连续森林中对蜣螂进行了采样。对于每个样地，我们量化了三个破碎化指标（面积、形状和周围森林数量），并模拟了它们对物种发生和群落特性的影响。大多数物种最可能发生在大的森林斑块内，而周围森林量对所有物种都有积极影响。超过80%的物种是森林专门化物种，物种的面积响应与其森林专门化水平呈正相关。观察到的物种水平的响应反映在群落水平上，森林专家在较大的森林斑块中的代表性更大，直到88公顷的阈值，此后稳定；景观中只有1%的斑块达到了这个阈值。物种丰富度也随斑块面积的增加而增加，但周围森林数量对物种丰富度的正向影响更大。群落结构由小块地到大块地，以及在更孤立的块地之间，物种更替呈梯度变化。我们的研究结果表明，大多数亚马逊地区的蜣螂物种在破碎的景观中成为“失败者”，尤其是森林专家。我们建议景观尺度规划，以保持森林连通性，包括大型森林遗迹。
Tropical forest fragmentation is expected to result in the loss of forest-dependent species (‘losers’) and proliferation of disturbance-tolerant species (‘winners’). Here, we use multi-species occupancy modelling to quantify the effects of fragmentation on Amazonian dung beetles at the species and community level. We investigate the relationship between species' habitat preferences and fragmentation responses to understand how interspecific variation in fragmentation responses translates into patterns of alpha and beta diversity. We sampled dung beetles within 21 forest patches and 2 continuous forests. For each site, we quantified three fragmentation metrics (area, shape, and surrounding forest amount) and modelled their effects on species occurrence and community properties. Most species were most likely to occur within large forest patches, while surrounding forest amount had a positive impact on all species. Over 80 % of species were forest specialists and species' area responses were positively correlated with their level of forest specialization. Observed species-level responses were reflected at the community level, with greater representation of forest specialists in larger forest patches up to an 88-ha threshold, stabilizing thereafter; this threshold was met by only 1 % of patches in the landscape. Species richness also increased with patch area, although surrounding forest amount had a greater positive impact. Communities were structured by a gradient of species turnover from small to large patches, and among more isolated patches. Our findings show that most Amazonian dung beetle species become ‘losers’ within fragmented landscapes, particularly forest specialists. We recommend landscape-scale planning to retain forest connectivity including large forest remnants.
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影响因子：
13.6
作者：
Haddad NM;Brudvig LA;Clobert J;Davies KF;Gonzalez A;Holt RD;Lovejoy TE;Sexton JO;Austin MP;Collins CD;Cook WM;Damschen EI;Ewers RM;Foster BL;Jenkins CN;King AJ;Laurance WF;Levey DJ;Margules CR;Melbourne BA;Nicholls AO;Orrock JL;Song DX;Townshend JR
通讯作者：
Townshend JR
基质组成介导栖息地破碎化的影响：建模研究
影响因子：
5.2
作者：
Jordan Chetcuti;W. Kunin;J. Bullock
通讯作者：
J. Bullock
物种丰富的森林附近牧场中亚马逊粪甲虫的物种突然消失
影响因子：
1.9
作者：
Ricardo J. Silva;Tatiane D. Pelissari;D. Krinski;G. Canale;F. Vaz
通讯作者：
F. Vaz
亚马逊森林砍伐支离破碎的边境地区陆生哺乳动物对河岸森林的利用阈值
影响因子：
3.4
作者：
Bárbara Zimbres;C. Peres;G. Penido;R. B. Machado
通讯作者：
R. B. Machado
影响因子：
5.9
作者：
Fletcher, Robert J., Jr.;Didham, Raphael K.;Haddad, Nick M.
通讯作者：
Haddad, Nick M.