Diatom communities differ among Antarctic moss and lichen vegetation types
Abstract Continental Antarctica is a polar desert containing sparse pockets of vegetation within ice-free areas. Despite the recognized association between lichens, mosses and epiphytic diatoms, the environmental factors controlling diatom community structure are poorly understood. We investigated t...
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crcambridgeupr:10.1017/s0954102020000620 2024-03-03T08:36:57+00:00 Diatom communities differ among Antarctic moss and lichen vegetation types Bishop, Jordan M. Wasley, Jane Waterman, Melinda J. Kohler, Tyler J. Van de Vijver, Bart Robinson, Sharon A. Kopalová, Kateřina 2020 http://dx.doi.org/10.1017/s0954102020000620 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0954102020000620 en eng Cambridge University Press (CUP) https://www.cambridge.org/core/terms Antarctic Science volume 33, issue 2, page 118-132 ISSN 0954-1020 1365-2079 Geology Ecology, Evolution, Behavior and Systematics Oceanography journal-article 2020 crcambridgeupr https://doi.org/10.1017/s0954102020000620 2024-02-08T08:36:49Z Abstract Continental Antarctica is a polar desert containing sparse pockets of vegetation within ice-free areas. Despite the recognized association between lichens, mosses and epiphytic diatoms, the environmental factors controlling diatom community structure are poorly understood. We investigated the association between diatom communities and host vegetation characteristics by experimentally adding nutrients and/or water to two bryophyte (healthy and moribund) and two lichen (crustose and Usnea ) vegetation types in the Windmill Islands. Diatom communities were morphologically characterized, diversity indices calculated and differences between treatments, vegetation type and vegetation characteristics tested. We identified 49 diatom taxa, 8 of which occurred with > 1% relative abundance. Bryophyte and lichen vegetation harboured significantly different diatom communities, both in composition and diversity indices. Specifically, Luticola muticopsis was more prevalent in moribund bryophytes and crustose lichens, and Usnea lichens showed lower species richness than other types. While nutrient and water additions did not significantly alter diatom communities, diversity indices and some species showed relationships with vegetation physiological characteristics, notably %N and δ 13 C, suggesting the importance of ambient gradients in water and nutrient availability. Collectively, this work suggests that future conditions favouring the dominance of a particular vegetation type may have a homogenizing effect on the terrestrial diatom communities of East Antarctica. Article in Journal/Newspaper Antarc* Antarctic Antarctic Science Antarctica East Antarctica polar desert Windmill Islands Cambridge University Press Antarctic East Antarctica Windmill Islands ENVELOPE(110.417,110.417,-66.350,-66.350) Antarctic Science 33 2 118 132 |
institution |
Open Polar |
collection |
Cambridge University Press |
op_collection_id |
crcambridgeupr |
language |
English |
topic |
Geology Ecology, Evolution, Behavior and Systematics Oceanography |
spellingShingle |
Geology Ecology, Evolution, Behavior and Systematics Oceanography Bishop, Jordan M. Wasley, Jane Waterman, Melinda J. Kohler, Tyler J. Van de Vijver, Bart Robinson, Sharon A. Kopalová, Kateřina Diatom communities differ among Antarctic moss and lichen vegetation types |
topic_facet |
Geology Ecology, Evolution, Behavior and Systematics Oceanography |
description |
Abstract Continental Antarctica is a polar desert containing sparse pockets of vegetation within ice-free areas. Despite the recognized association between lichens, mosses and epiphytic diatoms, the environmental factors controlling diatom community structure are poorly understood. We investigated the association between diatom communities and host vegetation characteristics by experimentally adding nutrients and/or water to two bryophyte (healthy and moribund) and two lichen (crustose and Usnea ) vegetation types in the Windmill Islands. Diatom communities were morphologically characterized, diversity indices calculated and differences between treatments, vegetation type and vegetation characteristics tested. We identified 49 diatom taxa, 8 of which occurred with > 1% relative abundance. Bryophyte and lichen vegetation harboured significantly different diatom communities, both in composition and diversity indices. Specifically, Luticola muticopsis was more prevalent in moribund bryophytes and crustose lichens, and Usnea lichens showed lower species richness than other types. While nutrient and water additions did not significantly alter diatom communities, diversity indices and some species showed relationships with vegetation physiological characteristics, notably %N and δ 13 C, suggesting the importance of ambient gradients in water and nutrient availability. Collectively, this work suggests that future conditions favouring the dominance of a particular vegetation type may have a homogenizing effect on the terrestrial diatom communities of East Antarctica. |
format |
Article in Journal/Newspaper |
author |
Bishop, Jordan M. Wasley, Jane Waterman, Melinda J. Kohler, Tyler J. Van de Vijver, Bart Robinson, Sharon A. Kopalová, Kateřina |
author_facet |
Bishop, Jordan M. Wasley, Jane Waterman, Melinda J. Kohler, Tyler J. Van de Vijver, Bart Robinson, Sharon A. Kopalová, Kateřina |
author_sort |
Bishop, Jordan M. |
title |
Diatom communities differ among Antarctic moss and lichen vegetation types |
title_short |
Diatom communities differ among Antarctic moss and lichen vegetation types |
title_full |
Diatom communities differ among Antarctic moss and lichen vegetation types |
title_fullStr |
Diatom communities differ among Antarctic moss and lichen vegetation types |
title_full_unstemmed |
Diatom communities differ among Antarctic moss and lichen vegetation types |
title_sort |
diatom communities differ among antarctic moss and lichen vegetation types |
publisher |
Cambridge University Press (CUP) |
publishDate |
2020 |
url |
http://dx.doi.org/10.1017/s0954102020000620 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0954102020000620 |
long_lat |
ENVELOPE(110.417,110.417,-66.350,-66.350) |
geographic |
Antarctic East Antarctica Windmill Islands |
geographic_facet |
Antarctic East Antarctica Windmill Islands |
genre |
Antarc* Antarctic Antarctic Science Antarctica East Antarctica polar desert Windmill Islands |
genre_facet |
Antarc* Antarctic Antarctic Science Antarctica East Antarctica polar desert Windmill Islands |
op_source |
Antarctic Science volume 33, issue 2, page 118-132 ISSN 0954-1020 1365-2079 |
op_rights |
https://www.cambridge.org/core/terms |
op_doi |
https://doi.org/10.1017/s0954102020000620 |
container_title |
Antarctic Science |
container_volume |
33 |
container_issue |
2 |
container_start_page |
118 |
op_container_end_page |
132 |
_version_ |
1792496575417679872 |