Aquatic insects indicate terrestrial habitat degradation: changes in taxonomical structure and functional diversity of dragonflies in tropical rainforest of East Kalimantan
Aquatic insects indicate terrestrial habitat degradation: changes in taxonomical structure and functional diversity of dragonflies in tropical rainforest of East Kalimantan
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DOI：
10.1080/03946975.2012.717480
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发表时间：
2012-09-01
期刊：
影响因子：
0.9
通讯作者：
Drozd, Pavel
中科院分区：
文献类型：
--
作者：
Dolny, Ales;Harabis, Filip;Drozd, Pavel
蜻蜓是一种淡水无脊椎动物，常被用作淡水生态系统的生态指标。尽管早期的研究表明，成年odonates可能是很好的指标，复杂的景观变化，实用odonates作为合适的指标，以表明健康的非水生（森林）栖息地仍然知之甚少。本研究分析了印度尼西亚双溪湾防护林的成年树群落格局对空间和时间的干扰特征。该保护区的核心包括东加里曼丹海岸沿着仅存的几片原始雨林之一，而保护区的其余部分则被次生林、灌木丛、草地和农田所覆盖。在个别采样点的成虫群落进行了分析，（1）他们的强度，（2）人为干扰的频率，（3）时间，因为最后一次这样的干扰，而控制随机变量（水生和陆生生境的类型）被删除。本研究测试了这些因素对（1）物种丰富度，（2）Zygoptera的比例，（3）森林专家的比例，和（4）婆罗洲特有种的比例的影响。在热带雨林中的人为干扰导致显着的变化，在分类组成和功能多样性的齿动物。这里报道的结果表明，在odonate组合的逐渐变化对应于森林环境的人为影响的程度。成年的odonates包括一个适当的敏感性和通用的指标组，用于确定陆地森林环境以及淡水栖息地的变化。
As a group of freshwater invertebrates, dragonflies (Odonata) are commonly used as ecological indicators of freshwater ecosystems. Despite earlier studies suggesting that adult odonates may be good indicators for complex changes in a landscape, the utility of odonates as suitable indicators to indicate health of non-aquatic (forest) habitats remains poorly understood. This study analyses the adult dragonfly assemblage pattern against spatial and temporal disturbance characteristics in Indonesia's Sungai Wain Protection Forest. The core of this reserve comprises one of the few remaining fragments of primary rain forest along the East Kalimantan coast, whereas the rest of the reserve is covered by secondary forest, scrub, grassland, and farmland. Adult dragonfly assemblages at individual sampling sites were analysed in relation to (1) their intensity, (2) frequency of human-caused disturbances, and (3) the time since the last such disturbance, while controlling random variables (type of aquatic and terrestrial habitat) were removed. This study tests the effect of these factors on (1) species richness, (2) proportion of Zygoptera, (3) proportion of forest specialists, and (4) proportion of Borneo's endemics. The human-induced disturbances in the rain forest resulted in pronounced changes in the taxonomical composition and functional diversity of the odonate fauna. Results reported here demonstrate that gradual changes in the odonate assemblages correspond to the degree of anthropogenic influences on forest environments. Adult odonates comprise an appropriately sensitive and versatile indicator group for identifying changes in terrestrial forest environments as well as in freshwater habitats.