Biomass of the cryptoendolithic microbiota from the Antarctic desert.
Extractable lipid phosphate was used to determine the biomass of the cryptoendolithic microbiota that colonizes sandstone rocks in the Ross Desert region of Antarctica. The mean amount of lipid phosphate was 0.053 micromole/cm2 (n = 9), which equals 2.54 g of C per m2 (range, 1.92 to 3.26 g of C per...
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ftpubmed:oai:pubmedcentral.nih.gov:202579 2023-05-15T13:52:27+02:00 Biomass of the cryptoendolithic microbiota from the Antarctic desert. Vestal, J R 1988-04 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC202579 http://www.ncbi.nlm.nih.gov/pubmed/11536603 en eng http://www.ncbi.nlm.nih.gov/pmc/articles/PMC202579 http://www.ncbi.nlm.nih.gov/pubmed/11536603 Research Article Text 1988 ftpubmed 2013-08-29T14:14:19Z Extractable lipid phosphate was used to determine the biomass of the cryptoendolithic microbiota that colonizes sandstone rocks in the Ross Desert region of Antarctica. The mean amount of lipid phosphate was 0.053 micromole/cm2 (n = 9), which equals 2.54 g of C per m2 (range, 1.92 to 3.26 g of C per m2) of biomass in the biotic zone of these rocks. The turnover of phospholipids was comparable to that of temperate sediments and soils (t1/2, 6 to 9 days) at 0 degrees C and a light intensity of 305 micromoles of photons per m2 per s, indicating that this was a good method to measure viable biomass. The biomass was 0.3 to 9.6% of the total carbon content of the biotic zone and was about 2 orders of magnitude smaller than the epilithic lichen dry weight at a location some 7 degrees north in latitude. The cryptoendolithic microbiota had a uniform density throughout the biotic zone under the rock surface. The results indicate that the cryptoendolithic microbial biomass is small but viable in this unique, extreme ecosystem. Text Antarc* Antarctic Antarctica PubMed Central (PMC) Antarctic The Antarctic |
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Research Article Vestal, J R Biomass of the cryptoendolithic microbiota from the Antarctic desert. |
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Research Article |
description |
Extractable lipid phosphate was used to determine the biomass of the cryptoendolithic microbiota that colonizes sandstone rocks in the Ross Desert region of Antarctica. The mean amount of lipid phosphate was 0.053 micromole/cm2 (n = 9), which equals 2.54 g of C per m2 (range, 1.92 to 3.26 g of C per m2) of biomass in the biotic zone of these rocks. The turnover of phospholipids was comparable to that of temperate sediments and soils (t1/2, 6 to 9 days) at 0 degrees C and a light intensity of 305 micromoles of photons per m2 per s, indicating that this was a good method to measure viable biomass. The biomass was 0.3 to 9.6% of the total carbon content of the biotic zone and was about 2 orders of magnitude smaller than the epilithic lichen dry weight at a location some 7 degrees north in latitude. The cryptoendolithic microbiota had a uniform density throughout the biotic zone under the rock surface. The results indicate that the cryptoendolithic microbial biomass is small but viable in this unique, extreme ecosystem. |
format |
Text |
author |
Vestal, J R |
author_facet |
Vestal, J R |
author_sort |
Vestal, J R |
title |
Biomass of the cryptoendolithic microbiota from the Antarctic desert. |
title_short |
Biomass of the cryptoendolithic microbiota from the Antarctic desert. |
title_full |
Biomass of the cryptoendolithic microbiota from the Antarctic desert. |
title_fullStr |
Biomass of the cryptoendolithic microbiota from the Antarctic desert. |
title_full_unstemmed |
Biomass of the cryptoendolithic microbiota from the Antarctic desert. |
title_sort |
biomass of the cryptoendolithic microbiota from the antarctic desert. |
publishDate |
1988 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC202579 http://www.ncbi.nlm.nih.gov/pubmed/11536603 |
geographic |
Antarctic The Antarctic |
geographic_facet |
Antarctic The Antarctic |
genre |
Antarc* Antarctic Antarctica |
genre_facet |
Antarc* Antarctic Antarctica |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC202579 http://www.ncbi.nlm.nih.gov/pubmed/11536603 |
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1766256737523859456 |