当前位置：
X-MOL 学术
›
J. Appl. Ecol.
›
论文详情
Our official English website, www.x-mol.net, welcomes your
feedback! (Note: you will need to create a separate account there.)
Recovery of a boreal ground‐beetle (Coleoptera: Carabidae) fauna 15 years after variable retention harvest
Journal of Applied Ecology ( IF 5.0 ) Pub Date : 2020-06-28 , DOI: 10.1111/1365-2664.13687 Linhao Wu 1 , Fangliang He 1 , John R. Spence 1
中文翻译：
可变保留收获后15年恢复了北方甲虫（鞘翅目：甲壳纲）动物区系
更新日期：2020-06-28
Journal of Applied Ecology ( IF 5.0 ) Pub Date : 2020-06-28 , DOI: 10.1111/1365-2664.13687 Linhao Wu 1 , Fangliang He 1 , John R. Spence 1
Affiliation
|
- Retention harvests are preferred over traditional clear‐cuts for sustainable forest management because maintenance and re‐establishment of native forest biodiversity is a priority. However, few studies have examined long‐term responses of biotic assemblages to retention harvest at particular sites.
- We studied the effects of decreasing initial harvest intensities (clear‐cut, 10%, 20%, 50% and 75% dispersed green‐tree retention) on carabid beetle assemblages relative to assemblage changes in un‐harvested control stands in four successionally ordered cover‐types of boreal mixedwood forest. We also studied temporal effects by comparing assemblages over a 16‐year pre‐ and post‐harvest period, using data collected through monitoring of the EMEND (Ecosystem Management Emulating Natural Disturbance) experiment in NW Alberta, Canada.
- Retention harvests affected assemblages differently across cover‐types. Assemblages in compartments harvested in the earlier forest successional stages of ‘deciduous’ or ‘deciduous with spruce understorey’ converged towards the pre‐harvest structure of corresponding controls over time. In contrast, beetle assemblages in ‘mixed’ or ‘conifer’ compartments, that represent later successional forest, moved steadily away from their pre‐harvest structures during the first post‐harvest decade. These latter assemblages became strikingly more similar to those under deciduous canopies by 15‐year post‐harvest.
- Synthesis and applications. Variable retention harvests will promote and maintain biodiversity better than clear‐cutting. Higher retention levels promote faster recovery, but towards fauna typical of early successional forest in all cover‐types. Carabids associated with conifer habitats are less resistant to impact from harvesting than are those from broadleaf deciduous forest. Therefore, conifer‐dominated stands present the most significant management challenge and higher retention levels are required to promote rapid and effective faunal recovery in such late successional stands.
中文翻译：
可变保留收获后15年恢复了北方甲虫（鞘翅目：甲壳纲）动物区系
- 对于可持续森林管理而言，保留采伐优于传统的伐木方式，因为维护和重建本地森林生物多样性是当务之急。但是，很少有研究研究生物组合对特定地点的保留收成的长期响应。
- 我们研究了相对于未经收获的对照林分，在四个连续订购的覆盖物中，降低初始收获强度（清晰的，10％，20％，50％和75％的分散绿树保留）对甲虫组合的影响北方混交林的类型。我们还通过比较在加拿大西北阿尔伯塔省EMEND（模拟自然干扰的生态系统管理）实验中收集的数据，通过比较16年收获前和收获后的组合研究了时间效应。
- 保留收成对不同封面类型的组合的影响不同。随着时间的推移，在早期森林演替阶段“落叶”或“云杉下层落叶的”采伐的隔间中的组合逐渐趋向于相应控制的收获前结构。相反，在收获后的第一个十年中，代表后来演替森林的“混合”或“针叶树”区室中的甲虫组合逐渐远离其收获前结构。到收获后的15年，这些后来的组合变得与落叶盖下的组合更加相似。
- 综合与应用。可变保留的收获将比明确的收获更好地促进和维护生物多样性。较高的保留水平促进更快的恢复，但对于所有覆盖类型的早期演替森林来说都是典型的动物。与阔叶落叶林相比，与针叶树栖息地相关的钩扣对收获影响的抵抗力较小。因此，以针叶树为主的林分带来了最重大的管理挑战，在这样的后期演替林分中，需要更高的保留水平来促进快速有效的动物恢复。
京公网安备 11010802027423号