干旱区生态环境知识资源中心(Arid): Estimating microbial mat biomass in the McMurdo Dry Valleys, Antarctica using satellite imagery and ground surveys

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DOI	10.1007/s00300-020-02742-y
	Estimating microbial mat biomass in the McMurdo Dry Valleys, Antarctica using satellite imagery and ground surveys
	Power, Sarah N.; Salvatore, Mark R.; Sokol, Eric R.; Stanish, Lee F.; Barrett, J. E.
通讯作者	Power, SN
来源期刊	POLAR BIOLOGY
ISSN	0722-4060
EISSN	1432-2056
出版年	2020
卷号	43 期号:11 页码:1753-1767
英文摘要	Cyanobacterial mat communities are the main drivers of primary productivity in the McMurdo Dry Valleys, Antarctica. These microbial communities form laminar mats on desert pavement surfaces adjacent to glacial meltwater streams, ponds, and lakes. The low-density nature of these communities and their patchy distribution make assessments of distribution, biomass, and productivity challenging. We used satellite imagery coupled with in situ surveying, imaging, and sampling to systematically estimate microbial mat biomass in selected wetland regions in Taylor Valley, Antarctica. On January 19th, 2018, the WorldView-2 multispectral satellite acquired an image of our study areas, where we surveyed and sampled seven 100 m(2)plots of microbial mats for percent ground cover, ash-free dry mass (AFDM), and pigment content (chlorophyll-a, carotenoids, and scytonemin). Multispectral analyses revealed spectral signatures consistent with photosynthetic activity (relatively strong reflection at near-infrared wavelengths and relatively strong absorption at visible wavelengths), with average normalized difference vegetation index (NDVI) values of 0.09 to 0.28. Strong correlations of microbial mat ground cover (R-2 = 0.84), biomass (R-2 = 0.74), chlorophyll-a content (R-2 = 0.65), and scytonemin content (R-2 = 0.98) with logit transformed NDVI values demonstrate that satellite imagery can detect both the presence of microbial mats and their key biological properties. Using the NDVI-biomass correlation we developed, we estimate carbon (C) stocks of 21,715 kg (14.7 g C m(-2)) in the Canada Glacier Antarctic Specially Protected Area, with an upper and lower limit of 74,871 and 6312 kg of C, respectively.
英文关键词	Antarctica Microbial mat Multispectral imagery NDVI Nostocales Remote sensing
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000570814800001
WOS关键词	SOUTHERN VICTORIA LAND ; TAYLOR VALLEY ; COMMUNITY COMPOSITION ; SOIL BIODIVERSITY ; ORGANIC-MATTER ; DESERT ; SCYTONEMIN ; VEGETATION ; ECOSYSTEMS ; DIVERSITY
WOS类目	Biodiversity Conservation ; Ecology
WOS研究方向	Biodiversity & Conservation ; Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/326367
作者单位	[Power, Sarah N.; Barrett, J. E.] Virginia Polytech Inst & State Univ, Dept Biol Sci, 2125 Derring Hall,Mail Code 0406,926 West Campus, Blacksburg, VA 24061 USA; [Salvatore, Mark R.] No Arizona Univ, Dept Astron & Planetary Sci, NAU Box 6010, Flagstaff, AZ 86011 USA; [Sokol, Eric R.; Stanish, Lee F.] Battelle Mem Inst, Natl Ecol Observ Network, 1685 38th St,Suite 100, Boulder, CO 80301 USA
推荐引用方式 GB/T 7714	Power, Sarah N.,Salvatore, Mark R.,Sokol, Eric R.,et al. Estimating microbial mat biomass in the McMurdo Dry Valleys, Antarctica using satellite imagery and ground surveys[J],2020,43(11):1753-1767.
APA	Power, Sarah N.,Salvatore, Mark R.,Sokol, Eric R.,Stanish, Lee F.,&Barrett, J. E..(2020).Estimating microbial mat biomass in the McMurdo Dry Valleys, Antarctica using satellite imagery and ground surveys.POLAR BIOLOGY,43(11),1753-1767.
MLA	Power, Sarah N.,et al."Estimating microbial mat biomass in the McMurdo Dry Valleys, Antarctica using satellite imagery and ground surveys".POLAR BIOLOGY 43.11(2020):1753-1767.