Dynamic populations in a dynamic landscape: the metapopulation structure of the marsh fritillary butterfly
Dynamic populations in a dynamic landscape: the metapopulation structure of the marsh fritillary butterfly
复制标题
动态景观中的动态种群：沼泽贝母蝴蝶的复合种群结构
DOI：
--
复制
发表时间：
2002
期刊：
影响因子：
--
通讯作者：
I. Hanski
中科院分区：
文献类型：
--
作者：
N. Wahlberg;T. Klemetti;I. Hanski
沼泽贝母蝶Euphydryas aurinia是北方欧洲大部分地区的濒危物种。描述了E.在过去的几十年里，该物种在芬兰急剧减少。我们发现两种类型的栖息地补丁适合的物种：半永久性草地和森林中的短暂皆伐。斑块面积是预测该虫发生的最显著变量。Aurinia在一个栖息地补丁。该物种往往被发现在年轻而不是老皆伐地，显然是因为植被变得太高，在后者。本文用关联函数模型模拟了该虫的集合种群动态。在其动态景观中的aurinia，并发现半永久性草地的持续存在对于芬兰东南部研究区域的物种生存至关重要。
The marsh fritillary butterfly Euphydryas aurinia is an endangered species in most of northern Europe. We describe the metapopulation structure of E. aurinia in Finland, where the species has declined drastically in the past decades. We found two types of habitat patches suitable for the species: semi-permanent meadows and transient clearcuts in the forest. Patch area was the most significant variable predicting the occurrence of E. aurinia in a habitat patch. The species tended to be found in young rather than old clearcuts, apparently because the vegetation became too high in the latter. We used the incidence function model to simulate the metapopulation dynamics of E. aurinia in its dynamic landscape and discovered that the continued presence of the semi-permanent meadows is essential for the survival of the species in the study area in southeast Finland.