Comparing the landscape level perceptual abilities of forest sciurids in fragmented agricultural landscapes*
Comparing the landscape level perceptual abilities of forest sciurids in fragmented agricultural landscapes*
复制标题
比较破碎农业景观中森林松鼠的景观水平感知能力*
DOI：
10.1023/a:1008154532512
复制
发表时间：
2000
影响因子：
5.2
通讯作者：
Patrick A. Zollner
中科院分区：
文献类型：
--
作者：
Patrick A. Zollner
感知范围是动物能够感知到远处景观元素（如栖息地）存在的最大距离。这种感知能力是有趣的，因为它们影响了动物成功分散到景观中的一个新补丁的概率。此外，了解物种之间的感知范围如何不同，可能有助于解释不同物种对斑块隔离的敏感性。本研究的目的是评估的感知范围东部花栗鼠（Tamias striatus），灰松鼠（松鼠carolinensis），狐狸松鼠（松鼠尼日尔）在破碎的农业景观。动物被捕获在偏远的林地和转移到陌生的农田。在那里，他们被释放在不同的距离从一个林地和他们的运动走向或远离林地被用来评估他们的能力，感知森林栖息地。观察到的感知范围约为120米的花栗鼠，300米的灰松鼠，和400米的狐狸松鼠，表明，差异的牺牲级的感知能力可能会影响这些物种的发生在孤立的栖息地补丁。
Perceptual range is the maximum distance from which an animal can perceive the presence of remote landscape elements such as patches of habitat. Such perceptual abilities are of interest because they influence the probability that an animal will successfully disperse to a new patch in a landscape. Furthermore, understanding how perceptual range differs between species may help to explain differential species sensitivity to patch isolation. The objective of this research was to assess the perceptual range of eastern chipmunks (Tamias striatus), gray squirrels (Sciurus carolinensis), and fox squirrels (Sciurus niger) in fragmented agricultural landscapes. Animals were captured in remote woodlots and translocated to unfamiliar agricultural fields. There they were released at different distances from a woodlot and their movements towards or away from the woodlot were used to assess their ability to perceive forested habitat. Observed perceptual ranges of approximately 120 m for chipmunks, 300 m for gray squirrels, and 400 m for fox squirrels, suggest that differences in landscape-level perceptual abilities may influence the occurrence of these species in isolated habitat patches.