RESPONSE OF ALGAL AND CYANOBACTERIAL COMMUNITIES FROM ARCTIC AND ANTARCTIC WETLAND HABITATS TO FREEZING AND DESICCATION STRESS
Polar hydro-terrestrial habitats represent a unique mosaic of unstable extreme environments characterised by presence of liquid water from melting permafrost, snowfields and glaciers during very short summer (Elster 2002). Filamentous cyanobacteria are often dominant in these habitats and are respon...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.551.4174 2023-05-15T13:53:26+02:00 RESPONSE OF ALGAL AND CYANOBACTERIAL COMMUNITIES FROM ARCTIC AND ANTARCTIC WETLAND HABITATS TO FREEZING AND DESICCATION STRESS Xxx Międzynarodowe Sympozjum Polarne Marie Šabacká Josef Elster The Pennsylvania State University CiteSeerX Archives application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.551.4174 http://ocean.am.gdynia.pl/sem/30msp/Mk-69.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.551.4174 http://ocean.am.gdynia.pl/sem/30msp/Mk-69.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://ocean.am.gdynia.pl/sem/30msp/Mk-69.pdf text ftciteseerx 2016-01-08T11:34:32Z Polar hydro-terrestrial habitats represent a unique mosaic of unstable extreme environments characterised by presence of liquid water from melting permafrost, snowfields and glaciers during very short summer (Elster 2002). Filamentous cyanobacteria are often dominant in these habitats and are responsible for high accumu-lation of nutrients and energy. They are exposed to severe conditions, whereof changes in desiccation-rehydration and freeze-thaw cycles are one of the most stressful. The ability of recovery from freezing and desiccation gives them a great ecological advantage and enables dominating cyanobacterial mats and crusts to be perennial (Davey 1989). Therefore, dried mats are subject to wind erosion, they may act as significant sources of propagules for airborne dispersal (Ellis-Evans and Walton 1990) and can be brought onto glacier surface and washed away into the drainage system inside the glaciers. Viability after freezing and desiccation was laboratory tested in isolated algal and cyanobacterial strains and natural samples from various hydro-terrestrial environments collected at the end of the summer season 2002 at several spots of British Antarctic Territory. Whereas mild freezing (–4°C), representing diurnal freeze-thaw cycles during the austral summer Text Antarc* Antarctic Arctic permafrost Unknown Arctic Antarctic Austral British Antarctic Territory ENVELOPE(0.000,0.000,-90.000,-90.000) Davey ENVELOPE(-58.567,-58.567,-61.967,-61.967) |
institution |
Open Polar |
collection |
Unknown |
op_collection_id |
ftciteseerx |
language |
English |
description |
Polar hydro-terrestrial habitats represent a unique mosaic of unstable extreme environments characterised by presence of liquid water from melting permafrost, snowfields and glaciers during very short summer (Elster 2002). Filamentous cyanobacteria are often dominant in these habitats and are responsible for high accumu-lation of nutrients and energy. They are exposed to severe conditions, whereof changes in desiccation-rehydration and freeze-thaw cycles are one of the most stressful. The ability of recovery from freezing and desiccation gives them a great ecological advantage and enables dominating cyanobacterial mats and crusts to be perennial (Davey 1989). Therefore, dried mats are subject to wind erosion, they may act as significant sources of propagules for airborne dispersal (Ellis-Evans and Walton 1990) and can be brought onto glacier surface and washed away into the drainage system inside the glaciers. Viability after freezing and desiccation was laboratory tested in isolated algal and cyanobacterial strains and natural samples from various hydro-terrestrial environments collected at the end of the summer season 2002 at several spots of British Antarctic Territory. Whereas mild freezing (–4°C), representing diurnal freeze-thaw cycles during the austral summer |
author2 |
The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
Xxx Międzynarodowe Sympozjum Polarne Marie Šabacká Josef Elster |
spellingShingle |
Xxx Międzynarodowe Sympozjum Polarne Marie Šabacká Josef Elster RESPONSE OF ALGAL AND CYANOBACTERIAL COMMUNITIES FROM ARCTIC AND ANTARCTIC WETLAND HABITATS TO FREEZING AND DESICCATION STRESS |
author_facet |
Xxx Międzynarodowe Sympozjum Polarne Marie Šabacká Josef Elster |
author_sort |
Xxx Międzynarodowe |
title |
RESPONSE OF ALGAL AND CYANOBACTERIAL COMMUNITIES FROM ARCTIC AND ANTARCTIC WETLAND HABITATS TO FREEZING AND DESICCATION STRESS |
title_short |
RESPONSE OF ALGAL AND CYANOBACTERIAL COMMUNITIES FROM ARCTIC AND ANTARCTIC WETLAND HABITATS TO FREEZING AND DESICCATION STRESS |
title_full |
RESPONSE OF ALGAL AND CYANOBACTERIAL COMMUNITIES FROM ARCTIC AND ANTARCTIC WETLAND HABITATS TO FREEZING AND DESICCATION STRESS |
title_fullStr |
RESPONSE OF ALGAL AND CYANOBACTERIAL COMMUNITIES FROM ARCTIC AND ANTARCTIC WETLAND HABITATS TO FREEZING AND DESICCATION STRESS |
title_full_unstemmed |
RESPONSE OF ALGAL AND CYANOBACTERIAL COMMUNITIES FROM ARCTIC AND ANTARCTIC WETLAND HABITATS TO FREEZING AND DESICCATION STRESS |
title_sort |
response of algal and cyanobacterial communities from arctic and antarctic wetland habitats to freezing and desiccation stress |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.551.4174 http://ocean.am.gdynia.pl/sem/30msp/Mk-69.pdf |
long_lat |
ENVELOPE(0.000,0.000,-90.000,-90.000) ENVELOPE(-58.567,-58.567,-61.967,-61.967) |
geographic |
Arctic Antarctic Austral British Antarctic Territory Davey |
geographic_facet |
Arctic Antarctic Austral British Antarctic Territory Davey |
genre |
Antarc* Antarctic Arctic permafrost |
genre_facet |
Antarc* Antarctic Arctic permafrost |
op_source |
http://ocean.am.gdynia.pl/sem/30msp/Mk-69.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.551.4174 http://ocean.am.gdynia.pl/sem/30msp/Mk-69.pdf |
op_rights |
Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
_version_ |
1766258542916927488 |