Measuring the dispersal of saproxylic insects: a key characteristic for their conservation
Measuring the dispersal of saproxylic insects: a key characteristic for their conservation
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测量腐木昆虫的扩散：保护其的一个关键特征
DOI：
10.1007/s10144-006-0262-3
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发表时间：
2006
影响因子：
1.7
通讯作者：
T. Ranius
中科院分区：
文献类型：
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作者：
T. Ranius
在自然保护学科中，重要的是要了解在什么情况下种群可以通过殖民化来补偿局部灭绝而生存。许多腐木（=木栖）昆虫物种的数量正在减少，并且由于管理森林中的栖息地可用性较低而被视为受到威胁。人们使用了几种方法来更好地了解数量下降的腐木昆虫的传播生物学和定植能力。本文总结并比较了此类研究的结果。当使用多种方法研究同一物种时，结果是一致的，但不同的方法揭示了传播生物学的不同方面。捕获-再捕获和遥测是可用于量化现场扩散速率和范围的直接方法。对遗传结构和占据模式的研究是互补的，因为它们揭示了在比直接方法研究更大的空间和时间范围内发生的扩散的后果。由于殖民而不是分散对于种群的持续存在很重要，因此殖民实验提供了有用的信息。为了获得与保护工作相关的信息，应对代表受威胁物种的模式物种进行扩散研究。常见物种和稀有物种的定殖能力概率不同，因此研究稀有物种的扩散也很重要，即使这比较困难。
In the discipline of nature conservation it is important to understand under which circumstances populations can survive by compensating local extinctions with colonizations. Many saproxylic (= wood-dwelling) insect species have declining populations and are regarded as threatened due to low habitat availability in managed forests. Several methods have been used to better understand the dispersal biology and colonization ability of saproxylic insects with declining populations. The present article summarizes and compares the results of such studies. When the same species have been studied using several methods, the results are consistent, but different aspects of dispersal biology are revealed with different methods. Capture-recapture and telemetry are direct methods that can be used to quantify dispersal rate and range in the field. Studies of genetic structure and occupancy patterns are complementary, as they reveal the consequences of dispersals that have taken place over a larger spatial and temporal scale than is possible to study with direct methods. Because colonization, rather than dispersal, is important for population persistence, colonization experiments provide useful information. To obtain information relevant for conservation work, dispersal studies should be conducted on model species that are representative of threatened species. Colonization ability probability differs between common and rare species, and therefore it is important to also study the dispersal of rare species, even if it is more difficult.