The distribution of lichens and mosses at Edward VII Peninsula, Marie Byrd Land, Antarctica

IF 1.8 4区地球科学 Q3 ENVIRONMENTAL SCIENCES

Antarctic Science Pub Date : 2022-12-01 DOI:10.1017/S0954102022000396

R. Ochyra, D. O. Øvstedal, P. Broady

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引用次数: 0

Abstract

Abstract This is the first detailed study of the distribution of mosses and lichens at Alexandra Mountains and Rockefeller Mountains, Edward VII Peninsula, Antarctica. A total of 418 samples was collected on 21 nunataks in the summer of 1987–1988. Lichens included 44 taxa, bringing the total known from Edward VII Peninsula to 50. Ten lichen species were new records for the Continental Antarctic zone, whilst only six were endemic to that zone. There were six species and one variety of moss, bringing the total known from Edward VII Peninsula to seven species and one variety. These included the first record of a species of Orthotrichum in Continental Antarctica. Two other species and a variety were new records for Edward VII Peninsula. Overall, the flora was species rich for a Continental Antarctic region and was comparable with the species-rich sites of Botany Bay and Kar Plateau, which are at approximately the same latitude (77°S) in southern Victoria Land. This rich flora was probably supported by a reliable summer water supply from melting snowfall and snowdrift and by the range of microenvironments at nunataks with different degrees of nutrient enrichment from nesting birds.

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南极洲玛丽·伯德地爱德华七世半岛地衣和苔藓的分布

摘要这是对南极洲爱德华七世半岛亚历山德拉山脉和洛克菲勒山脉苔藓和地衣分布的首次详细研究。1987年至1988年夏天，共在21个努纳塔克采集了418个样本。地衣包括44个分类群，使爱德华七世半岛已知的总数达到50个。10种地衣是南极大陆带的新记录，而只有6种是该地区的特有物种。苔藓共有六种一变种，使爱德华七世半岛已知的苔藓总数达到七种一变种。其中包括在南极洲大陆首次记录到一种正交虫。另外两个物种和一个变种是爱德华七世半岛的新记录。总的来说，南极大陆地区的植物区系物种丰富，与维多利亚地南部大约相同纬度（77°S）的植物湾和卡尔高原的物种丰富地区相当。这种丰富的植物群可能得到了来自融化的降雪和雪堆的可靠夏季供水的支持，以及努纳塔克斯的一系列微环境的支持，这些微环境具有不同程度的筑巢鸟类的营养富集。

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来源期刊

Antarctic Science 地学-地球科学综合

CiteScore

3.60

自引率

6.20%

发文量

审稿时长

3 months

期刊介绍： Antarctic Science provides a truly international forum for the broad spread of studies that increasingly characterise scientific research in the Antarctic. Whilst emphasising interdisciplinary work, the journal publishes papers from environmental management to biodiversity, from volcanoes to icebergs, and from oceanography to the upper atmosphere. No other journal covers such a wide range of Antarctic scientific studies. The journal attracts papers from all countries currently undertaking Antarctic research. It publishes both review and data papers with no limits on length, two-page short notes on technical developments and recent discoveries, and book reviews. These, together with an editorial discussing broader aspects of science, provide a rich and varied mixture of items to interest researchers in all areas of science. There are no page charges, or charges for colour, to authors publishing in the Journal. One issue each year is normally devoted to a specific theme or papers from a major meeting.