Modelling the impact of forest design plans on an endangered mammal species: the Eurasian red squirrel
Modelling the impact of forest design plans on an endangered mammal species: the Eurasian red squirrel
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DOI：
10.4404/hystrix-27.1-11673
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发表时间：
2016-01-01
影响因子：
1.5
通讯作者：
Lurz, Peter W. W.
中科院分区：
文献类型：
--
作者：
Jones, Hannah E.;White, Andrew;Lurz, Peter W. W.
欧亚红松鼠（Sciurus vulgaris）在英国受到来自北美灰松鼠的威胁。国家拯救物种的措施包括大型针叶林保护区，其管理包括支持本地物种的措施。然而，森林是多用途的环境，林业工作者必须平衡不同的木材生产、舒适和养护目标。我们提出了一个数学建模框架，探讨潜在的砍伐和重建计划的影响，两个储备，基德兰和Uswayford森林，在北方英格兰。与森林管理人员合作，我们采用了一个迭代过程，使用该模型来评估四个森林设计计划（砍伐和重建方案），目的是提高红松鼠种群的生存能力。总体而言，该模型预测，在同一时间在两个森林灭绝是罕见的，但在Uswayford（84%）单独高。通过砍伐和重新造林调整，以及改善两个相邻森林之间的扩散，生存率可以大幅提高（从16%提高到70%）。这项研究提供了一个范例，说明建模如何直接投入土地管理，以帮助管理人员客观地平衡多用途林业的不同压力。
The Eurasian red squirrel (Sciurus vulgaris) is under threat in the UK from the introduced North American grey squirrel. National measures to save the species include large conifer forest reserves where management encompasses measures to bolster the native species. However, forests are multipurpose environments and foresters have to balance different timber production, amenity and conservation objectives. We present a mathematical modelling framework that examines the impacts of potential felling and restocking plans for two reserves, Kidland and Uswayford forests, in northern England. In collaboration with forest managers, we employed an iterative process that used the model to assess four forest design plans (felling and restocking scenarios) with the aim of improving red squirrel population viability. Overall, the model predicted that extinction in both forests at the same time was rare, but high in Uswayford (84%) alone. Survival could be drastically increased (from 16% to 70%) by felling and restocking adjustments, and improving dispersal between the two adjacent forests. This study provides an exemplar of how modelling can have a direct input to land management to help managers objectively balance the differing pressures of multipurpose forestry.