Negative effects of density on space use of small mammals differ with the phase of the masting-induced population cycle.
Negative effects of density on space use of small mammals differ with the phase of the masting-induced population cycle.
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DOI：
10.1002/ece3.2513
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发表时间：
2016-12
影响因子：
2.6
通讯作者：
Crone, Elizabeth E.
中科院分区：
文献类型：
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作者：
Bogdziewicz, Michal;Zwolak, Rafal;Redosh, Lauren;Rychlik, Leszek;Crone, Elizabeth E.
关键词：
家域的大小通常随着人口密度的增加而减少，但测试这种关系如何受到其他因素的影响（例如，食物供应、亲属结构）是一项艰巨的任务。我们使用空间显式捕获-再捕获模型来研究黄颈鼠（Apodemus flavicollis）的家域大小如何随种群密度而变化。研究了山毛榉（Fagus sylvatica）肥大引起的种群波动的两个不同阶段：肥大后丰度高峰期（肥大后第一个夏天，n = 2）和随后的崩溃期（肥大后第二个夏天，n = 2）的种群密度和家域大小之间的关系。我们从6月到9月生活诱捕小鼠，以避免秋季种子落下对家域大小的混淆影响。根据一般的预测，我们发现，家域的大小与人口密度呈负相关。然而，在控制了密度的影响后，小鼠的活动范围在桅杆后的几年比在崩溃阶段更大。这表明在桅杆后的几年里，邻居之间的空间重叠更高。我们认为，增加的空间重叠是由负密度依赖扩散引起的，负密度依赖扩散导致种群内个体在周期的高峰期具有较高的相关性。
Home range size generally decreases with increasing population density, but testing how this relationship is influenced by other factors (e.g., food availability, kin structure) is a difficult task. We used spatially explicit capture–recapture models to examine how home range size varies with population density in the yellow‐necked mouse (Apodemus flavicollis). The relationship between population density and home range size was studied at two distinct phases of population fluctuations induced by beech (Fagus sylvatica) masting: post‐mast peak in abundance (first summer after mast, n = 2) and subsequent crash (second summer after mast, n = 2). We live‐trapped mice from June to September to avoid the confounding effects of autumn seedfall on home range size. In accordance with general predictions, we found that home range size was negatively associated with population density. However, after controlling for the effect of density, home ranges of mice were larger in post‐mast years than during the crash phase. This indicates a higher spatial overlap among neighbors in post‐mast years. We suggest that the increased spatial overlap is caused by negative density‐dependent dispersal that leads to high relatedness of individuals within population in the peak phase of the cycle.
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影响因子：
5.9
作者：
Efford, M. G.;Dawson, D. K.;Qureshi, Q.
通讯作者：
Qureshi, Q.
影响因子：
4.8
作者：
Andreassen, HP;Gundersen, G
通讯作者：
Gundersen, G
影响因子：
1.9
作者：
Borchers, D. L.;Efford, M. G.
通讯作者：
Efford, M. G.
影响因子：
4.8
作者：
Efford, Murray G.;Dawson, Deanna K.;Borchers, David L.
通讯作者：
Borchers, David L.
DOI：
10.1007/978-0-387-78151-8_11
发表时间：
2009-01-01
期刊：
MODELING DEMOGRAPHIC PROCESSES IN MARKED POPULATIONS
影响因子：
--
作者：
Efford, Murray G.;Borchers, David L.;Byrom, Andrea E.
通讯作者：
Byrom, Andrea E.