Terrestrial vegetation at Canada Glacier, Southern Victoria Land, Antarctica
Terrestrial vegetation at Canada Glacier, Southern Victoria Land, Antarctica
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南极洲南维多利亚地加拿大冰川的陆地植被
作者：
A. Schwarz;T. Green;R. Seppelt
本文综述了S.S.S.I.加拿大冰川附近的苔藓植物。12号，泰勒谷，南维多利亚土地，进行了调查，以描述植被的存在，并调查影响植被分布的因素。生物量值为950至1，250 g m−2（干重），植被面积高达14，450 m2，表明这是维多利亚南部土地上重要的硬硅钙石生长区。通过详细的绘图，研究了植物种类与水流的关系。这是银真藓（Bryum argenteum）和海氏藓（Pottia heimii）的首次鉴定，也是该地区假三角真藓（Bryum pseudotriquetrum）的首次报道。该地点植物的组织氮值低于其他报告的数据，但这似乎不太可能成为生长的限制因素。它的结论是，在这方面，夏季水流与微地形有最大的影响，在确定苔藓，蓝藻和藻类生长。
SummaryBryophyte flushes in the vicinity of Canada Glacier in S.S.S.I. No. 12, Taylor Valley, Southern Victoria Land, were investigated in order to describe the vegetation present and to investigate factors affecting vegetation distribution. Biomass values from 950 to 1,250 g m−2 (dry weight) and vegetated areas up to 14,450 m2 indicate this is a significant area of bryophyte growth in Southern Victoria Land. The pattern of plant species in relation to water flow was investigated through detailed mapping. This is the first confirmed identification of Bryum argenteum, and Pottia heimii, and the first report of Bryum pseudotriquetrum from this area. Tissue nitrogen values for plants at this site are lower than other reported data, but it seems unlikely this would be a limiting factor for growth. It is concluded that, in this area, summer water flow in conjunction with microtopography has the greatest influence in determining where mosses, cyanobacteria and algae grow.