Documenting lemming population change in the Arctic: Can we detect trends?
Documenting lemming population change in the Arctic: Can we detect trends?
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DOI：
10.1007/s13280-019-01198-7
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发表时间：
2020-03-01
期刊：
影响因子：
6.5
通讯作者：
Solovyeva, Diana V.
中科院分区：
文献类型：
--
作者：
Ehrich, Dorothee;Schmidt, Niels M.;Solovyeva, Diana V.
旅鼠是苔原食物网的关键组成部分，其动态变化会影响整个生态系统。我们全面概述了旅鼠监测和研究活动，并评估了环极地北极地区旅鼠丰度的最新趋势。自 2000 年以来，旅鼠已在 49 个地点受到监测，其中 38 个地点仍然活跃。这些地点分布不均匀，尤其是俄罗斯和高北极加拿大的代表性不足。所有地点都对丰度进行了监测，但方法和精确度差异很大。其他重要的属性，如健康、遗传多样性和人口变化的潜在驱动因素，往往没有受到监测。尽管检测到与田鼠同域的低北极种群呈负趋势，但没有证据表明旅鼠种群总体上正在减少。为了跟上北极变化的步伐，我们建议维持长期计划，同时协调方法、提高空间覆盖范围并整合生态系统视角。
Lemmings are a key component of tundra food webs and changes in their dynamics can affect the whole ecosystem. We present a comprehensive overview of lemming monitoring and research activities, and assess recent trends in lemming abundance across the circumpolar Arctic. Since 2000, lemmings have been monitored at 49 sites of which 38 are still active. The sites were not evenly distributed with notably Russia and high Arctic Canada underrepresented. Abundance was monitored at all sites, but methods and levels of precision varied greatly. Other important attributes such as health, genetic diversity and potential drivers of population change, were often not monitored. There was no evidence that lemming populations were decreasing in general, although a negative trend was detected for low arctic populations sympatric with voles. To keep the pace of arctic change, we recommend maintaining long-term programmes while harmonizing methods, improving spatial coverage and integrating an ecosystem perspective.