From nature reserve to mosaic management: Improving matrix survival, not permeability, benefits regional populations under habitat loss and fragmentation
From nature reserve to mosaic management: Improving matrix survival, not permeability, benefits regional populations under habitat loss and fragmentation
复制标题
从自然保护区到镶嵌管理：改善基质生存而不是渗透性，使栖息地丧失和破碎的区域人口受益
DOI：
10.1111/1365-2664.14122
复制
发表时间：
2022
影响因子：
5.7
通讯作者：
Lindenmayer, David
中科院分区：
文献类型：
--
作者：
Yamaura, Yuichi;Fletcher, Robert J.;Lade, Steven J.;Higa, Motoki;Lindenmayer, David
虽然基质改善破碎化景观是一个很有前途的保护措施，基质渗透性（生物体进入基质的意愿）和运动在基质中的生存通常是聚合。因此，它是未知的矩阵属性需要改进。目前还不清楚是否矩阵升级，从扩散通道提供繁殖机会有很大的保护效益，以及是否有栖息地和矩阵management.We之间的互动影响研究矩阵的影响，区域人口在梯度的栖息地丧失和破碎化，利用模拟实验，集成的人口过程和运动建模的基础上电路理论。我们分别修改了基质渗透性和运动存活率的水平，以评估其各自的影响。我们还改变了数量和配置，不仅栖息地，但也改善了矩阵，以评估其对人口的生命率（大小，生存和密度）的影响。在二元景观包括栖息地和未改善的矩阵，矩阵移动生存有更大的影响，人口的生命率比矩阵渗透性。增加运动存活率增加的生命率，然而，增加基质渗透性降低的生命率。增加渗透性需要相应的增加运动生存，以抵消潜在的负面人口outcomes.When子集的矩阵功能的扩散通道只（没有繁殖机会存在）进行了改进，增加基质渗透性，但保持运动生存不变降低所有的重要率，特别是随着栖息地破碎化。相比之下，当运动生存增加，生命率增加了强大的栖息地破碎化。当生境数量适中时，改善扩散通道为种群生存提供繁殖机会的效益最大。我们还发现，栖息地和改善基质的数量之间的协同效应，和矩阵的改善的好处时，在空间上聚集的方式实现改善。合成和应用。旨在提高运动存活率的矩阵改进和连通性建模可能会带来更大的保护效益，而不是仅仅提高渗透率。缓冲和连接栖息地遗迹与改善矩阵可以提供好处，只要运动生存增加。同时实施生境管理和基质改善将产生协同保护效益。
Although matrix improvement in fragmented landscapes is a promising conservation measure, matrix permeability (willingness of an organism to enter the matrix) and movement survival in the matrix are usually aggregated. Consequently, it is unknown which matrix property needs to be improved. It also remains unclear whether matrix upgrading from dispersal passage to providing reproduction opportunities has large conservation benefits and whether there are interactive effects between habitat and matrix management.We examined matrix effects on regional populations across a gradient of habitat loss and fragmentation using simulation experiments that integrated demographic processes and movement modelling based on circuit theory. We separately modified the levels of matrix permeability and movement survival to evaluate their individual effects. We also altered the amount and configuration of not only habitat but also improved matrix to assess their effects on population vital rates (size, survival and density).In binary landscapes comprising habitat and unimproved matrix, matrix movement survival had larger effects on population vital rates than matrix permeability. Increasing movement survival increased vital rates, yet, increasing matrix permeability decreased vital rates. Increased permeability required corresponding increased movement survival to offset potential negative population outcomes.When subsets of the matrix functioning as dispersal passage only (where no reproduction opportunities existed) were improved, increasing matrix permeability but holding movement survival constant reduced all vital rates, especially with increasing habitat fragmentation. In contrast, when movement survival increased, vital rates increased given strong habitat fragmentation. The benefits of upgrading dispersal passage to provide reproduction opportunities for population survival were greatest when habitat amount was moderate. We also found synergetic effects between amounts of habitat and improved matrix, and the benefits of matrix improvement were promoted when improvement was achieved in a spatially aggregated manner.Synthesis and applications. Matrix improvement and connectivity modelling aimed at increasing movement survival will likely bring larger conservation benefits than those for improving permeability alone. Buffering and connecting habitat remnants with improved matrix could provide benefits as long as movement survival is increased. Simultaneous implementation of habitat management and matrix improvement would yield synergistic conservation benefits.
登录
查看更多内容
基质异质性对动物扩散的影响：从个体行为到种群水平参数
DOI：
10.1086/424767
发表时间：
2004
期刊：
The American Naturalist
影响因子：
--
作者：
E. Revilla;T. Wiegand;F. Palomares;P. Ferreras;M. Delibes
通讯作者：
M. Delibes
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.
影响因子：
10
作者：
Betts, Matthew G.;Phalan, Benjamin T.;Balmford, Andrew
通讯作者：
Balmford, Andrew
影响因子：
5.9
作者：
Marx, Andrew J.;Wang, Chao;Fletcher, Robert J., Jr.
通讯作者：
Fletcher, Robert J., Jr.
该矩阵改变了路径冗余对斑块定殖率的作用。
影响因子：
4.8
作者：
R. Fletcher;M. Acevedo;Ellen P. Robertson
通讯作者：
Ellen P. Robertson