Non-structural carbohydrate content in cryptogamic Antarctic species after two years of passive warming on the Fildes Peninsula
Cryptogamic vegetation dominates the ice-free areas of the maritime Antarctic. This particular flora grows slowly due to extreme environmental conditions, typically low temperature that may limit growth during a short summer. Over the last 50 years, the Antarctic Peninsula has undergone the highest...
Main Authors: | , , , , |
---|---|
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Masaryk Univerzity
2015
|
Subjects: | |
Online Access: | http://journals.muni.cz/CPR/article/view/12869 |
id |
ftmasarykunivojs:oai:ojs.journals.muni.cz:article/12869 |
---|---|
record_format |
openpolar |
spelling |
ftmasarykunivojs:oai:ojs.journals.muni.cz:article/12869 2023-05-15T13:46:41+02:00 Non-structural carbohydrate content in cryptogamic Antarctic species after two years of passive warming on the Fildes Peninsula Casanova-Katny, Angélica Pizarro, Marisol Caballero, Marta María Cordero, Raúl Zúiga, Gustavo E. 2015-01-01 application/pdf http://journals.muni.cz/CPR/article/view/12869 eng eng Masaryk Univerzity http://journals.muni.cz/CPR/article/view/12869/11203 http://journals.muni.cz/CPR/article/view/12869 Copyright (c) 2020 Czech Polar Reports https://creativecommons.org/licenses/by-nc-nd/4.0 CC-BY-NC-ND Czech Polar Reports; Vol 5 No 1 (2015); 88-98 Czech Polar Reports; Vol. 5 No. 1 (2015); 88-98 1805-0697 1805-0689 Antarctica OTC bryophytes lichens carbohydrate metabolism info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 2015 ftmasarykunivojs 2022-06-26T10:16:32Z Cryptogamic vegetation dominates the ice-free areas of the maritime Antarctic. This particular flora grows slowly due to extreme environmental conditions, typically low temperature that may limit growth during a short summer. Over the last 50 years, the Antarctic Peninsula has undergone the highest registered temperature increases in Antarctica. As a consequence of higher temperatures, we hypothesized that lichens and mosses would produce more carbohydrates. To test this, open top chambers (OTCs) were installed in an Usnea-Himantormia community on Fildes Peninsula of King George Island. After two years, lichen thalli and plant tissues were collected to quantify non-structural carbohydrates in three lichens and two mosses. Responses contrasted between species. While non-structural carbohydrates were higher in the OTC for the lichen Himantormia lugubris, the values decreased in the moss Polytrichastrum alpinum. No marked responses to experimental warming were observed in the other three species. A significant species-specific increase in soluble sugar was observed inside the OTCs, while polyols content were not markedly different due to OTC treatment. In general, the obtained results indicate that warming does not increase carbohydrate content in all cryptogams, instead suggesting a strong species-specific response to a scenario of global warming. Further long-term warming experiments are needed to assess the responses of target species in the terrestrial Antarctic ecosystem. Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula Antarctica King George Island Masaryk University Journals Antarctic The Antarctic Antarctic Peninsula King George Island Fildes ENVELOPE(-58.817,-58.817,-62.217,-62.217) Fildes peninsula ENVELOPE(-58.948,-58.948,-62.182,-62.182) |
institution |
Open Polar |
collection |
Masaryk University Journals |
op_collection_id |
ftmasarykunivojs |
language |
English |
topic |
Antarctica OTC bryophytes lichens carbohydrate metabolism |
spellingShingle |
Antarctica OTC bryophytes lichens carbohydrate metabolism Casanova-Katny, Angélica Pizarro, Marisol Caballero, Marta María Cordero, Raúl Zúiga, Gustavo E. Non-structural carbohydrate content in cryptogamic Antarctic species after two years of passive warming on the Fildes Peninsula |
topic_facet |
Antarctica OTC bryophytes lichens carbohydrate metabolism |
description |
Cryptogamic vegetation dominates the ice-free areas of the maritime Antarctic. This particular flora grows slowly due to extreme environmental conditions, typically low temperature that may limit growth during a short summer. Over the last 50 years, the Antarctic Peninsula has undergone the highest registered temperature increases in Antarctica. As a consequence of higher temperatures, we hypothesized that lichens and mosses would produce more carbohydrates. To test this, open top chambers (OTCs) were installed in an Usnea-Himantormia community on Fildes Peninsula of King George Island. After two years, lichen thalli and plant tissues were collected to quantify non-structural carbohydrates in three lichens and two mosses. Responses contrasted between species. While non-structural carbohydrates were higher in the OTC for the lichen Himantormia lugubris, the values decreased in the moss Polytrichastrum alpinum. No marked responses to experimental warming were observed in the other three species. A significant species-specific increase in soluble sugar was observed inside the OTCs, while polyols content were not markedly different due to OTC treatment. In general, the obtained results indicate that warming does not increase carbohydrate content in all cryptogams, instead suggesting a strong species-specific response to a scenario of global warming. Further long-term warming experiments are needed to assess the responses of target species in the terrestrial Antarctic ecosystem. |
format |
Article in Journal/Newspaper |
author |
Casanova-Katny, Angélica Pizarro, Marisol Caballero, Marta María Cordero, Raúl Zúiga, Gustavo E. |
author_facet |
Casanova-Katny, Angélica Pizarro, Marisol Caballero, Marta María Cordero, Raúl Zúiga, Gustavo E. |
author_sort |
Casanova-Katny, Angélica |
title |
Non-structural carbohydrate content in cryptogamic Antarctic species after two years of passive warming on the Fildes Peninsula |
title_short |
Non-structural carbohydrate content in cryptogamic Antarctic species after two years of passive warming on the Fildes Peninsula |
title_full |
Non-structural carbohydrate content in cryptogamic Antarctic species after two years of passive warming on the Fildes Peninsula |
title_fullStr |
Non-structural carbohydrate content in cryptogamic Antarctic species after two years of passive warming on the Fildes Peninsula |
title_full_unstemmed |
Non-structural carbohydrate content in cryptogamic Antarctic species after two years of passive warming on the Fildes Peninsula |
title_sort |
non-structural carbohydrate content in cryptogamic antarctic species after two years of passive warming on the fildes peninsula |
publisher |
Masaryk Univerzity |
publishDate |
2015 |
url |
http://journals.muni.cz/CPR/article/view/12869 |
long_lat |
ENVELOPE(-58.817,-58.817,-62.217,-62.217) ENVELOPE(-58.948,-58.948,-62.182,-62.182) |
geographic |
Antarctic The Antarctic Antarctic Peninsula King George Island Fildes Fildes peninsula |
geographic_facet |
Antarctic The Antarctic Antarctic Peninsula King George Island Fildes Fildes peninsula |
genre |
Antarc* Antarctic Antarctic Peninsula Antarctica King George Island |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Antarctica King George Island |
op_source |
Czech Polar Reports; Vol 5 No 1 (2015); 88-98 Czech Polar Reports; Vol. 5 No. 1 (2015); 88-98 1805-0697 1805-0689 |
op_relation |
http://journals.muni.cz/CPR/article/view/12869/11203 http://journals.muni.cz/CPR/article/view/12869 |
op_rights |
Copyright (c) 2020 Czech Polar Reports https://creativecommons.org/licenses/by-nc-nd/4.0 |
op_rightsnorm |
CC-BY-NC-ND |
_version_ |
1766245073135075328 |