Aspects of global change and the biodiversity along an altitudinal transect in continental Antarctica

全球变化和南极洲大陆海拔断面生物多样性的各个方面

• 批准号: 129331136
• 负责人: Professorin Dr. Sieglinde Ott
• 金额: --
• 依托单位: Department Biologie
• 依托单位国家: 德国
• 项目类别: Infrastructure Priority Programmes
• 财政年份: 2009
• 资助国家: 德国
• 起止时间: 2008-12-31 至 2013-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/129331136?language=en
• 关键词: Aspects; global; change; biodiversity; along

Lichens and bryophytes form the dominant vegetation at terrestrial sites across the Antarctic. Detailed research has been done at terrestrial coastal sites of the maritime Antarctic. While there is a broad knowledge on well developed communhies of lichens and bryophytes considering physiology and vegetation ecology of these coastal sites the knowledge of diversity, ecology and physiology is scarce across continental sites. The rare investigations on continental Antarctica focused on coastal sites (on more or less sea level) where lichen colonisation occurred. The question arises whether lichen colonisation is restricted to lower altitudes at continental sites or will appear also up to higher elevations. The hypothesis ofthe project is that lichens are able to colonise higher altitudes as long as micro niches with suitable environmental parameters are available. Therefore, the proposed project focuses on the characterisation of microclimate and atmospheric parameters to be able to describe environmental parameters which may influence and effect lichen species at respective habitats. In addition, chlorophyll a fluorescence will be calculated to get indications on response of photosynthesisactivity. The project also emphasises on the diversity of lichen species along an altitudinal transect up to 3000m a.s.l. and the interactions between and among species considering the colonisation process. The aim ofthe project is to correlate the data achieved with environmental change at the continental Antarctic.

地衣和苔藓植物是南极陆地上的主要植被。已经在南极海域的陆地沿海地区进行了详细的研究。虽然考虑到这些沿海地区的生理学和植被生态学，人们对发育良好的地衣和苔藓植物群落有了广泛的了解，但在大陆地区，关于多样性、生态和生理学的知识却很少。对南极洲大陆的罕见调查集中在发生地衣殖民的沿海地点（或多或少在海平面上）。问题是，地衣的殖民化是否仅限于大陆地区的低海拔地区，还是也会出现在较高海拔地区。该项目的假设是，只要有具有合适环境参数的微型生态位，地衣就能够在更高的海拔地区定居。因此，拟议项目的重点是微气候和大气参数的表征，以便能够描述可能影响和影响各自栖息地的地衣物种的环境参数。此外，还将计算叶绿素a荧光以获得光合作用反应的指示。该项目还强调沿海拔 3000m 的横断面地衣物种的多样性。以及考虑殖民过程的物种之间的相互作用。该项目的目的是将获得的数据与南极大陆的环境变化联系起来。