Characterization of Chasmoendolithic Community in Miers Valley, McMurdo Dry Valleys, Antarctica
The Antarctic Dry Valleys are unable to support higher plant and animal life and so microbial communities dominate biotic ecosystem processes. Soil communities are well characterized, but rocky surfaces have also emerged as a significant microbial habitat. Here, we identify extensive colonization of...
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ftunivsthongkong:oai:repository.ust.hk:1783.1-98504 2023-05-15T13:37:09+02:00 Characterization of Chasmoendolithic Community in Miers Valley, McMurdo Dry Valleys, Antarctica Yung, Cheuk Man Chan, Yuki Lacap, Donnabella C. Pérez-Ortega, Sergio de los Rios-Murillo, Asuncion Lee, Charles K. Cary, S. Craig Pointing, Stephen B. 2014 http://repository.ust.hk/ir/Record/1783.1-98504 https://doi.org/10.1007/s00248-014-0412-7 http://lbdiscover.ust.hk/uresolver?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rfr_id=info:sid/HKUST:SPI&rft.genre=article&rft.issn=0095-3628&rft.volume=v. 68&rft.issue=(2)&rft.date=2014&rft.spage=351&rft.aulast=Yung&rft.aufirst=C.C.M.&rft.atitle=Characterization+of+Chasmoendolithic+Community+in+Miers+Valley,+McMurdo+Dry+Valleys,+Antarctica&rft.title=Microbial+Ecology http://www.scopus.com/record/display.url?eid=2-s2.0-84904547176&origin=inward http://gateway.isiknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=LinksAMR&SrcApp=PARTNER_APP&DestLinkType=FullRecord&DestApp=WOS&KeyUT=000339735300017 English eng http://repository.ust.hk/ir/Record/1783.1-98504 Microbial Ecology, v. 68, (2), August 2014, p. 351-359 0095-3628 https://doi.org/10.1007/s00248-014-0412-7 http://lbdiscover.ust.hk/uresolver?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rfr_id=info:sid/HKUST:SPI&rft.genre=article&rft.issn=0095-3628&rft.volume=v. 68&rft.issue=(2)&rft.date=2014&rft.spage=351&rft.aulast=Yung&rft.aufirst=C.C.M.&rft.atitle=Characterization+of+Chasmoendolithic+Community+in+Miers+Valley,+McMurdo+Dry+Valleys,+Antarctica&rft.title=Microbial+Ecology http://www.scopus.com/record/display.url?eid=2-s2.0-84904547176&origin=inward http://gateway.isiknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=LinksAMR&SrcApp=PARTNER_APP&DestLinkType=FullRecord&DestApp=WOS&KeyUT=000339735300017 Article 2014 ftunivsthongkong https://doi.org/10.1007/s00248-014-0412-7 2019-09-03T18:31:15Z The Antarctic Dry Valleys are unable to support higher plant and animal life and so microbial communities dominate biotic ecosystem processes. Soil communities are well characterized, but rocky surfaces have also emerged as a significant microbial habitat. Here, we identify extensive colonization of weathered granite on a landscape scale by chasmoendolithic microbial communities. A transect across north-facing and south-facing slopes plus valley floor moraines revealed 30-100 % of available substrate was colonized up to an altitude of 800 m. Communities were assessed at a multidomain level and were clearly distinct from those in surrounding soils and other rock-inhabiting cryptoendolithic and hypolithic communities. All colonized rocks were dominated by the cyanobacterial genus Leptolyngbya (Oscillatoriales), with heterotrophic bacteria, archaea, algae, and fungi also identified. Striking patterns in community distribution were evident with regard to microclimate as determined by aspect. Notably, a shift in cyanobacterial assemblages from Chroococcidiopsis-like phylotypes (Pleurocapsales) on colder-drier slopes, to Synechococcus-like phylotypes (Chroococcales) on warmer-wetter slopes. Greater relative abundance of known desiccation-tolerant bacterial taxa occurred on colder-drier slopes. Archaeal phylotypes indicated halotolerant taxa and also taxa possibly derived from nearby volcanic sources. Among the eukaryotes, the lichen photobiont Trebouxia (Chlorophyta) was ubiquitous, but known lichen-forming fungi were not recovered. Instead, fungal assemblages were dominated by ascomycetous yeasts. We conclude that chasmoendoliths likely constitute a significant geobiological phenomenon at lower elevations in granite-dominated Antarctic Dry Valley systems. © 2014 Springer Science+Business Media New York. Article in Journal/Newspaper Antarc* Antarctic Antarctica McMurdo Dry Valleys The Hong Kong University of Science and Technology: HKUST Institutional Repository Antarctic McMurdo Dry Valleys Miers ENVELOPE(163.850,163.850,-78.100,-78.100) Miers Valley ENVELOPE(164.200,164.200,-78.100,-78.100) The Antarctic Microbial Ecology 68 2 351 359 |
institution |
Open Polar |
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The Hong Kong University of Science and Technology: HKUST Institutional Repository |
op_collection_id |
ftunivsthongkong |
language |
English |
description |
The Antarctic Dry Valleys are unable to support higher plant and animal life and so microbial communities dominate biotic ecosystem processes. Soil communities are well characterized, but rocky surfaces have also emerged as a significant microbial habitat. Here, we identify extensive colonization of weathered granite on a landscape scale by chasmoendolithic microbial communities. A transect across north-facing and south-facing slopes plus valley floor moraines revealed 30-100 % of available substrate was colonized up to an altitude of 800 m. Communities were assessed at a multidomain level and were clearly distinct from those in surrounding soils and other rock-inhabiting cryptoendolithic and hypolithic communities. All colonized rocks were dominated by the cyanobacterial genus Leptolyngbya (Oscillatoriales), with heterotrophic bacteria, archaea, algae, and fungi also identified. Striking patterns in community distribution were evident with regard to microclimate as determined by aspect. Notably, a shift in cyanobacterial assemblages from Chroococcidiopsis-like phylotypes (Pleurocapsales) on colder-drier slopes, to Synechococcus-like phylotypes (Chroococcales) on warmer-wetter slopes. Greater relative abundance of known desiccation-tolerant bacterial taxa occurred on colder-drier slopes. Archaeal phylotypes indicated halotolerant taxa and also taxa possibly derived from nearby volcanic sources. Among the eukaryotes, the lichen photobiont Trebouxia (Chlorophyta) was ubiquitous, but known lichen-forming fungi were not recovered. Instead, fungal assemblages were dominated by ascomycetous yeasts. We conclude that chasmoendoliths likely constitute a significant geobiological phenomenon at lower elevations in granite-dominated Antarctic Dry Valley systems. © 2014 Springer Science+Business Media New York. |
format |
Article in Journal/Newspaper |
author |
Yung, Cheuk Man Chan, Yuki Lacap, Donnabella C. Pérez-Ortega, Sergio de los Rios-Murillo, Asuncion Lee, Charles K. Cary, S. Craig Pointing, Stephen B. |
spellingShingle |
Yung, Cheuk Man Chan, Yuki Lacap, Donnabella C. Pérez-Ortega, Sergio de los Rios-Murillo, Asuncion Lee, Charles K. Cary, S. Craig Pointing, Stephen B. Characterization of Chasmoendolithic Community in Miers Valley, McMurdo Dry Valleys, Antarctica |
author_facet |
Yung, Cheuk Man Chan, Yuki Lacap, Donnabella C. Pérez-Ortega, Sergio de los Rios-Murillo, Asuncion Lee, Charles K. Cary, S. Craig Pointing, Stephen B. |
author_sort |
Yung, Cheuk Man |
title |
Characterization of Chasmoendolithic Community in Miers Valley, McMurdo Dry Valleys, Antarctica |
title_short |
Characterization of Chasmoendolithic Community in Miers Valley, McMurdo Dry Valleys, Antarctica |
title_full |
Characterization of Chasmoendolithic Community in Miers Valley, McMurdo Dry Valleys, Antarctica |
title_fullStr |
Characterization of Chasmoendolithic Community in Miers Valley, McMurdo Dry Valleys, Antarctica |
title_full_unstemmed |
Characterization of Chasmoendolithic Community in Miers Valley, McMurdo Dry Valleys, Antarctica |
title_sort |
characterization of chasmoendolithic community in miers valley, mcmurdo dry valleys, antarctica |
publishDate |
2014 |
url |
http://repository.ust.hk/ir/Record/1783.1-98504 https://doi.org/10.1007/s00248-014-0412-7 http://lbdiscover.ust.hk/uresolver?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rfr_id=info:sid/HKUST:SPI&rft.genre=article&rft.issn=0095-3628&rft.volume=v. 68&rft.issue=(2)&rft.date=2014&rft.spage=351&rft.aulast=Yung&rft.aufirst=C.C.M.&rft.atitle=Characterization+of+Chasmoendolithic+Community+in+Miers+Valley,+McMurdo+Dry+Valleys,+Antarctica&rft.title=Microbial+Ecology http://www.scopus.com/record/display.url?eid=2-s2.0-84904547176&origin=inward http://gateway.isiknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=LinksAMR&SrcApp=PARTNER_APP&DestLinkType=FullRecord&DestApp=WOS&KeyUT=000339735300017 |
long_lat |
ENVELOPE(163.850,163.850,-78.100,-78.100) ENVELOPE(164.200,164.200,-78.100,-78.100) |
geographic |
Antarctic McMurdo Dry Valleys Miers Miers Valley The Antarctic |
geographic_facet |
Antarctic McMurdo Dry Valleys Miers Miers Valley The Antarctic |
genre |
Antarc* Antarctic Antarctica McMurdo Dry Valleys |
genre_facet |
Antarc* Antarctic Antarctica McMurdo Dry Valleys |
op_relation |
http://repository.ust.hk/ir/Record/1783.1-98504 Microbial Ecology, v. 68, (2), August 2014, p. 351-359 0095-3628 https://doi.org/10.1007/s00248-014-0412-7 http://lbdiscover.ust.hk/uresolver?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rfr_id=info:sid/HKUST:SPI&rft.genre=article&rft.issn=0095-3628&rft.volume=v. 68&rft.issue=(2)&rft.date=2014&rft.spage=351&rft.aulast=Yung&rft.aufirst=C.C.M.&rft.atitle=Characterization+of+Chasmoendolithic+Community+in+Miers+Valley,+McMurdo+Dry+Valleys,+Antarctica&rft.title=Microbial+Ecology http://www.scopus.com/record/display.url?eid=2-s2.0-84904547176&origin=inward http://gateway.isiknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=LinksAMR&SrcApp=PARTNER_APP&DestLinkType=FullRecord&DestApp=WOS&KeyUT=000339735300017 |
op_doi |
https://doi.org/10.1007/s00248-014-0412-7 |
container_title |
Microbial Ecology |
container_volume |
68 |
container_issue |
2 |
container_start_page |
351 |
op_container_end_page |
359 |
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1766088675925426176 |