Impact of the Black-capped Marmot (Marmota camtschatica bungei) on Floristic Diversity of Arctic Tundra in Northern Siberia
Impact of the Black-capped Marmot (Marmota camtschatica bungei) on Floristic Diversity of Arctic Tundra in Northern Siberia
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DOI：
10.1080/15230430.2001.12003423
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发表时间：
2001-05
期刊：
影响因子：
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通讯作者：
Youri Semenov;R. Ramousse;M. Berre;Youri Tutukarov
中科院分区：
文献类型：
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作者：
Youri Semenov;R. Ramousse;M. Berre;Youri Tutukarov
通过描述性和定量方法在三个土拨鼠栖息地研究了黑顶土拨鼠对北极苔原植被的影响。栖息地核心区域（主要洞穴）的植被不同于外围区域（次要洞穴、路径、抓挠区域）或无土拨鼠的苔原区域。在主要洞穴区，物种丰富度、多样性和公平性较低。在同一地方，禾本科植物的丰度增加，而灌木的优势和隐花植物（苔藓植物和地衣）的存在则下降。一些杂草更常见于土拨鼠主要洞穴周围。其中一些是稀有的，被列为西伯利亚北极苔原的受保护物种。这表明黑顶土拨鼠通过挖洞、践踏和排泄等活动改变了微地形和土壤特性，从而影响了北极苔原的植物区系结构和组成。
The impact of black-capped marmots on arctic tundra vegetation was examined by descriptive and quantitative methods in three marmot home ranges. Vegetation in the home range core area (main burrows) differed from the peripheral zone (secondary burrows, paths, scratching areas) or from marmot-free tundra area. In main burrow plots species richness, diversity, and equitability were low. In the same places graminoid abundance were increased, whereas dominance of shrubs and presence of cryptogams (bryophytes and lichens) were declined. Some forbs were more often found around marmot main burrows. Some of these are rare and listed as protected species in Siberian Arctic tundra. This suggests that through activities such as burrowing, trampling, and excretion black-capped marmots modify microrelief and soil properties, which influence the floristic structure and composition of the arctic tundra.