登录 | 注册 | 中文  | English  | 用时: 0.42s
元数据
高级检索
首页 > 中国极地考察知识库 > 成果信息库 > 已审查 Factors influencing small-scale distribution of 10 macrolichens in King George Island, Western Antarctica

Factors influencing small-scale distribution of 10 macrolichens in King George Island, Western Antarctica

【标题】Factors influencing small-scale distribution of 10 macrolichens in King George Island, Western Antarctica

【Title】Factors influencing small-scale distribution of 10 macrolichens in King George Island, Western Antarctica

【作者】 刘华杰

【Author】 Liu Huajie

【期刊】极地研究

【Journal】Advances in Polar Science

【期刊年份】2012

【卷】23

【期】3

【关键词】 bird disturbance; canonical correspondence analysis; lichen ecology; maritime Antarctica; soil accumulation

【Keywords】 bird disturbance; canonical correspondence analysis; lichen ecology; maritime Antarctica; soil accumulation

【摘要】 Lichens are among the main primary colonists in most terrestrial ecosystems of Antarctica, where the effects of environmental factors on spatial distribution of lichens are essential to understand the functioning of Antarctic terrestrial ecosystems. We measured abundance of 10 frequently observed macrolichens and environmental factors at a small scale (20 × 20 cm), in the ice-free areas of Fildes Peninsula and Ardley Island, King George Island, West Antarctica, and assessed the effects of environmental factors on the local distribution of lichens. Canonical correspondence analyses (CCA) show that 8 out of 15 environmental factors, belonging to 4 sets of variables, are important in spatial distribution of the 10 lichens. Variation partitioning analyses show that most of the variation in distribution of the 10 lichens is described by the spatial heterogeneity of substrate, bird influence and microclimate and topography, whereas human impact has no significant effects.

【Abstract】 Lichens are among the main primary colonists in most terrestrial ecosystems of Antarctica, where the effects of environmental factors on spatial distribution of lichens are essential to understand the functioning of Antarctic terrestrial ecosystems. We measured abundance of 10 frequently observed macrolichens and environmental factors at a small scale (20 × 20 cm), in the ice-free areas of Fildes Peninsula and Ardley Island, King George Island, West Antarctica, and assessed the effects of environmental factors on the local distribution of lichens. Canonical correspondence analyses (CCA) show that 8 out of 15 environmental factors, belonging to 4 sets of variables, are important in spatial distribution of the 10 lichens. Variation partitioning analyses show that most of the variation in distribution of the 10 lichens is described by the spatial heterogeneity of substrate, bird influence and microclimate and topography, whereas human impact has no significant effects.

【基金/项目】

【下载】 PDF(246.8 KB)