Can a trait-based multi-taxa approach improve our assessment of forest management impact on biodiversity?
Can a trait-based multi-taxa approach improve our assessment of forest management impact on biodiversity?
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DOI：
10.1007/s10531-013-0565-6
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发表时间：
2013-11-01
影响因子：
3.4
通讯作者：
Moretti, Marco
中科院分区：
文献类型：
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作者：
Aubin, Isabelle;Venier, Lisa;Moretti, Marco
收获对森林生物多样性的影响已得到广泛研究，但对于需要进行综合跨分类群评估的管理人员来说，应用仍然是一个重大挑战。使用收获后的北方森林演替作为一个模型系统，我们调查的有用性的特征为基础的多类群的方法，以提高我们的理解干扰后的社区动态。我们评估的强度响应森林采伐和恢复模式的四个类群的对比属性（植被，步甲，蜘蛛和鸟类）沿着收获后的时间序列的短叶松站在加拿大的北方森林。我们使用了一套互补的功能和分类多样性指标，以确定共同点和不同点的社区组装过程和敏感性，收获类群之间。尽管整体相似的社区响应大多数对分类群和指标，跨分类群一致性的强度变化很大的指标，说明分类群响应收获的复杂性，以及包括各种生物多样性指标的影响评估的必要性。在所选的四个类群中，蜘蛛被发现对收获最敏感，收获后对环境变化的反应强烈，群落恢复过程缓慢。鸟类和步甲表现出高度一致的反应模式，收获的强烈反应，然后是一个显着的恢复过程。地面植被是最有弹性的收获。我们讨论了这些对比的恢复过程的管理影响，概述了目前这种方法的局限性，并建议实施有效的综合多类群监测计划的步骤。
Harvest impact on forest biodiversity has been widely studied, but for managers confronted with a need for integrated cross-taxa assessment, application remains a significant challenge. Using post-harvest boreal forest succession as a model system, we investigate the usefulness of a trait-based multi-taxa approach to improve our understanding of the community dynamics after disturbance. We assess the strength of response to forest harvesting and recovery patterns of four taxa with contrasting attributes (vegetation, carabids, spiders and birds) along a post-harvest chronosequence of jack pine stands in the boreal forests of Canada. We used a complementary set of functional and taxonomic diversity metrics to identify commonalities and dissimilarities in the community assembly processes and sensitivities to harvesting among taxa. Despite the overall similarity of community response for most pairs of taxa and metrics, the strength of cross-taxa congruency varied greatly among metrics, illustrating the complexity of taxa response to harvest as well as the necessity of including a variety of biodiversity metrics in impact assessments. Of the four selected taxa, spiders were found the most sensitive to harvesting, with a strong response to environmental changes after harvest and a slow community recovery process. Birds and carabids showed highly congruent response patterns, with a strong response to harvest followed by a marked recovery process. Ground vegetation was the most resilient to harvesting. We discuss the management implications of these contrasting recovery processes, outline the current limitations of this method and suggest steps toward the implementation of effective integrated multi-taxa monitoring programs.