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Spatial Distribution Patterns of the Antarctic Hair Grass Deschampsia antarctica in Relation to Environmental Variables on Barton Peninsula, King George Island

Cited 4 time in scopus
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Title
Spatial Distribution Patterns of the Antarctic Hair Grass Deschampsia antarctica in Relation to Environmental Variables on Barton Peninsula, King George Island
Other Titles
킹조지섬 바톤반도 환경요인에 따른 남극좀새풀 Deschampsia antarctica 분포 패턴
Authors
Ahn, In-Young
Park, Jeong Soo
Lee, Eun Ju
Subject
Environmental Sciences & Ecology; Physical Geography
Keywords
Deschampsia antarctica; King George Island; abundance; antarctic hair grass; distribution
Issue Date
2013
Publisher
Regents
Citation
Ahn, In-Young, Park, Jeong Soo, Lee, Eun Ju. 2013. "Spatial Distribution Patterns of the Antarctic Hair Grass Deschampsia antarctica in Relation to Environmental Variables on Barton Peninsula, King George Island". ARCTIC ANTARCTIC AND ALPINE RESEARCH, 45(4): 563-574.
Abstract
Understanding the patterns in species distribution and abundance along environmental gradients is a keystone in field ecological study. Because the Antarctic terrestrial communi-ties are simple, they provide a suitable opportunity for studying species distribution patterns in relation to environmental gradients. We applied diverse geostatistic methods and classi- cal statistic descriptors to analyze the spatial patterns of several variables, such as Descham- Korea psia antarctica abundance, moss cover, topography, and soil physical and chemical proper- ties. Directional semivariograms and kriged maps showed that strong anisotropy in a topographic variable was reflected in the soil variables. Especially, soil texture and moss cover were correlated with elevation, and electric conductivity and Na were influenced by the distance from the shoreline. Furthermore, the heavy snowfall in 2009 evidently affected the survival of the grass. A short growing period and waterlogging induced by heavy snowfall may limit survival of D. antarctica and the amount of snowfall can be a important factor limiting the grass expansion.ying species distribution patterns in relation to environmental gradients. We applied diverse geostatistic methods and classi- cal statistic descriptors to analyze the spatial patterns of several variables, such as Descham- Korea psia antarctica abundance, moss cover, topography, and soil physical and chemical proper- ties. Directional semivariograms and kriged maps showed that strong anisotropy in a topographic variable was reflected in the soil variables. Especially, soil texture and moss cover were correlated with elevation, and electric conductivity and Na were influenced by the distance from the shoreline. Furthermore, the heavy snowfall in 2009 evidently affected the survival of the grass. A short growing period and waterlogging induced by heavy snowfall may limit survival of D. antarctica and the amount of snowfall can be a important factor limiting the grass expansion.
URI
http://repository.kopri.re.kr/handle/201206/6024
DOI
http://dx.doi.org/10.1657/1938-4246-45.4.563
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