The importance of realistic dispersal models in conservation planning: application of a novel modelling platform to evaluate management scenarios in an Afrotropical biodiversity hotspot.
The importance of realistic dispersal models in conservation planning: application of a novel modelling platform to evaluate management scenarios in an Afrotropical biodiversity hotspot.
复制标题
DOI：
10.1111/1365-2664.12643
复制
发表时间：
2016-08
期刊：
影响因子：
--
通讯作者：
Matthysen E
中科院分区：
文献类型：
--
作者：
Aben J;Bocedi G;Palmer SC;Pellikka P;Strubbe D;Hallmann C;Travis JM;Lens L;Matthysen E
由于生物多样性热点地区的特点往往是人口密度高，因此实施只注重保护和扩大原始栖息地的保护管理做法可能是不现实的。遏制物种灭绝风险的另一种方法是改善现有栖息地斑块之间的连通性。然而，评估空间明确的管理策略是具有挑战性的，因为预测模型必须考虑到扩散过程，这在经验数据收集和建模方面都很困难。在这里，我们使用一个新颖的、基于个体的建模平台，结合人口统计学和机械扩散模型来评估在高度碎片化的生物多样性热点地区为保护森林鸟类而量身定制的现实管理方案的有效性。基于一种被充分研究过的森林鸟类的空间种群动态，对情景性能进行了评估。预计最大的人口增长发生在栖息地面积增加的情况下。然而，其有效性对空间规划非常敏感。与在栖息地网络中增加一个大的斑块相比，增加几个小的斑块产生了混合的好处：尽管总体种群规模增加了，但特定的新创建的斑块充当了分散汇，这损害了一些现有斑块的种群持久性。通过创造垫脚石来增加基质的连通性，可能会提高分散的成功率，并占用更小的斑块。合成与应用。我们表明，空间管理的有效性在很大程度上取决于个体在景观中的分散模式。对于物种保护规划，我们提倡使用在人口统计学中，特别是在分散行为中纳入足够现实主义的模型。我们表明，空间管理的有效性在很大程度上取决于个体在景观中的分散模式。对于物种保护规划，我们提倡使用在人口统计学中，特别是在分散行为中纳入足够现实主义的模型。
As biodiversity hotspots are often characterized by high human population densities, implementation of conservation management practices that focus only on the protection and enlargement of pristine habitats is potentially unrealistic. An alternative approach to curb species extinction risk involves improving connectivity among existing habitat patches. However, evaluation of spatially explicit management strategies is challenging, as predictive models must account for the process of dispersal, which is difficult in terms of both empirical data collection and modelling. Here, we use a novel, individual‐based modelling platform that couples demographic and mechanistic dispersal models to evaluate the effectiveness of realistic management scenarios tailored to conserve forest birds in a highly fragmented biodiversity hotspot. Scenario performance is evaluated based on the spatial population dynamics of a well‐studied forest bird species. The largest population increase was predicted to occur under scenarios increasing habitat area. However, the effectiveness was sensitive to spatial planning. Compared to adding one large patch to the habitat network, adding several small patches yielded mixed benefits: although overall population sizes increased, specific newly created patches acted as dispersal sinks, which compromised population persistence in some existing patches. Increasing matrix connectivity by the creation of stepping stones is likely to result in enhanced dispersal success and occupancy of smaller patches. Synthesis and applications. We show that the effectiveness of spatial management is strongly driven by patterns of individual dispersal across landscapes. For species conservation planning, we advocate the use of models that incorporate adequate realism in demography and, particularly, in dispersal behaviours. We show that the effectiveness of spatial management is strongly driven by patterns of individual dispersal across landscapes. For species conservation planning, we advocate the use of models that incorporate adequate realism in demography and, particularly, in dispersal behaviours.
登录
查看更多内容
影响因子：
1.7
作者：
Aerts, Raf;Thijs, Koen W.;Muys, Bart
通讯作者：
Muys, Bart
影响因子：
5.9
作者：
Green, Jonathan M. H.;Larrosa, Cecilia;Coad, Lauren
通讯作者：
Coad, Lauren
影响因子：
3.4
作者：
Aben, J.;Adriaensen, F.;Matthysen, E.
通讯作者：
Matthysen, E.
影响因子：
5.9
作者：
Boscolo, Danilo;Metzger, Jean Paul
通讯作者：
Metzger, Jean Paul
影响因子：
3.4
作者：
Fischer, J;Lindenmayer, DB
通讯作者：
Lindenmayer, DB