Pichancourt Jean-Baptiste, Burel Françoise, Auger Pierre
UMR ECOBIO CNRS, université Rennes-1, bât. 14b, campus de Beaulieu, 35042 Rennes cedex, France.
C R Biol. 2006 Jan;329(1):31-9. doi: 10.1016/j.crvi.2005.09.009. Epub 2005 Dec 2.
To better understand the role of habitat quality and boundaries on population dynamics at the landscape scale, we develop a model combining a spatially implicit approach, a spatial population Leslie-type model and an implicit model of habitat fragmentation. An original approach of elasticity permits to identify which types of element and boundary influence the most population viability according to the wood fragmentation degree. The studied species is a corridor forest insect sensitive to fragmentation (Abax parallelepipedus, Coleoptera, Carabidae). We show that a single large patch of wood is better than several small patches for the population viability.
为了更好地理解栖息地质量和边界在景观尺度上对种群动态的作用，我们开发了一个模型，该模型结合了空间隐式方法、空间种群莱斯利型模型和栖息地破碎化隐式模型。一种弹性的原始方法能够根据木材破碎程度确定哪些类型的元素和边界对种群生存力影响最大。所研究的物种是一种对破碎化敏感的走廊森林昆虫（扁圆步甲，鞘翅目，步甲科）。我们表明，对于种群生存力而言，一片大的林地比几片小的林地更好。
