Parasites and forest chronosequence: long-term recovery of nematomorph parasites after clear-logging.
Parasites and forest chronosequence: long-term recovery of nematomorph parasites after clear-logging.
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寄生虫和森林时间序列：砍伐后线形寄生虫的长期恢复。
DOI：
10.1016/j.foreco.2013.12.004
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发表时间：
2014
影响因子：
3.7
通讯作者：
Watanabe K,
中科院分区：
文献类型：
--
作者：
Fukushima K;Tokuchi N,Sato T;Watanabe K,
人为干扰影响生态系统联系的时间尺度往往不清楚。线虫形寄生虫通过操纵它们的陆地宿主，将森林与河流生态系统紧密地联系在一起。利用时间序列研究了森林砍伐后沿森林恢复梯度的线形植物及其陆地寄主的丰度和物种/遗传多样性。在不同林龄（3 ~ 48年）的8个流域只发现1种线虫。线形植物在采伐后立即发生局部灭绝，然后随林龄线性增加。它们的相对丰度在9月份的老林中最高，而在10月份的新林中最高，这表明砍伐不仅会造成长期（约50年）的规模破坏，而且会造成由线形物介导的森林-河流联系的时间中断。骆驼蟋蟀（Diestrammena tsushimensisandD.）线虫的优势最终寄主Elegantissima)在30年左右的森林中恢复到峰值，这不足以解释线虫的长期恢复。本研究提供了一个时间尺度（50年）的实证例子，在这个时间尺度上，森林和河流应该作为一个综合系统进行管理。
Temporal scales at which anthropogenic disturbances affect ecosystem linkages are often unclear. The nematomorph parasites tightly link forests to stream ecosystems via manipulation of their terrestrial hosts. We examined the abundance and species/genetic diversities of nematomorphs with their terrestrial hosts along a forest-recovery gradient after clear-cut logging, using a chronosequence. Only one nematomorph species was found from eight watersheds with different forest ages (3–48 years). The nematomorphs suffered local extinction immediately after logging and then increased linearly with forest age. Their relative abundances were highest in September in older forests, but in October in younger forests, suggesting clear-cut logging can cause not only long-term (>50 years) disruption of the magnitude but also timing of the forest–stream linkage mediated by the nematomorphs. Camel crickets (Diestrammena tsushimensisandD. elegantissima), dominant definitive hosts of the nematomorphs, recovered with a peak at around 30-year-old forests, which was insufficient to explain the long-term recovery of the nematomorphs. This study provided an empirical example of the time-scale (>50 years) at which forests and streams should be managed as integrated systems.