Benthic marine algae from South Shetland Islands (Antarctica): biodiversity and evolutionary patterns
[eng] The present work focuses on different aspects related to the Antarctic seaweed. As the main primary producers of the coastal areas of Antarctica, this group of organisms play a key role in shaping the biological communities and the ecological dynamics of Antarctic shores. However, compared to...
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ftubarcepubl:oai:diposit.ub.edu:2445/184229 2024-02-11T09:58:07+01:00 Benthic marine algae from South Shetland Islands (Antarctica): biodiversity and evolutionary patterns Martín Martín, Rafael Pablo Gómez Garreta, Ma. Amelia Rull, Jordi Universitat de Barcelona. Departament de Biologia, Sanitat i Medi Ambient 2021-09-17 211 p. application/pdf http://hdl.handle.net/2445/184229 http://hdl.handle.net/10803/673828 eng eng Universitat de Barcelona Tesis Doctorals - Departament - Biologia, Sanitat i Medi Ambient http://hdl.handle.net/2445/184229 http://hdl.handle.net/10803/673828 (c) Martín Martín, Rafael Pablo, 2022 info:eu-repo/semantics/openAccess Algues marines Antàrtida Biodiversitat Ecologia química Citogenètica Marine algae Antarctica Biodiversity Chemical ecology Cytogenetics info:eu-repo/semantics/doctoralThesis info:eu-repo/semantics/publishedVersion 2021 ftubarcepubl 2024-01-24T01:17:16Z [eng] The present work focuses on different aspects related to the Antarctic seaweed. As the main primary producers of the coastal areas of Antarctica, this group of organisms play a key role in shaping the biological communities and the ecological dynamics of Antarctic shores. However, compared to other groups of Antarctic organisms or the seaweed communities of other regions of the world, Antarctic macroalgae remain less studied. This is especially true in several areas of knowledge as their actual biodiversity, their evolutionary history and patterns, some aspects of their ecology or the total extent of their relations with other Antarctic organisms and their environment. Aiming to address the lack of knowledge of these areas, we aimed to extend it by focusing our work in several key aspects of Antarctic seaweed biology. As so, we tried to respond several specific questions regarding the topics above mentioned. In this context, we studied biodiversity of seaweed communities that are present in the South Shetland Islands. For that, we tried to identify the composition and influencing factors of the seaweed assemblages present in Deception Island. We also studied how seaweed biodiversity affects Antarctic epiphytic diatoms richness, studying the composition of them, both from Deception and Livingston islands. Moreover, we tried to expand the data with evolutionary relevance by analysing the nuclear DNA content and ploidy levels (C values), as well as the nuclear developmental patterning of some common Antarctic seaweed species with no previous data for those characters. This was achieved by using a fluorimetry technique that sets a reference for comparison for future studies on those parameters. Additionally, we condensed the latest knowledge on the chemical ecology of seaweeds and other organisms from Antarctica, and tried to expand it by investigating the potential antimicrobial activity of these seaweeds. For this, we tested their natural extracts against several Antarctic microorganisms and identified ... Doctoral or Postdoctoral Thesis Antarc* Antarctic Antarctica Deception Island South Shetland Islands Dipòsit Digital de la Universitat de Barcelona Antarctic Deception Island ENVELOPE(-60.633,-60.633,-62.950,-62.950) South Shetland Islands The Antarctic |
institution |
Open Polar |
collection |
Dipòsit Digital de la Universitat de Barcelona |
op_collection_id |
ftubarcepubl |
language |
English |
topic |
Algues marines Antàrtida Biodiversitat Ecologia química Citogenètica Marine algae Antarctica Biodiversity Chemical ecology Cytogenetics |
spellingShingle |
Algues marines Antàrtida Biodiversitat Ecologia química Citogenètica Marine algae Antarctica Biodiversity Chemical ecology Cytogenetics Martín Martín, Rafael Pablo Benthic marine algae from South Shetland Islands (Antarctica): biodiversity and evolutionary patterns |
topic_facet |
Algues marines Antàrtida Biodiversitat Ecologia química Citogenètica Marine algae Antarctica Biodiversity Chemical ecology Cytogenetics |
description |
[eng] The present work focuses on different aspects related to the Antarctic seaweed. As the main primary producers of the coastal areas of Antarctica, this group of organisms play a key role in shaping the biological communities and the ecological dynamics of Antarctic shores. However, compared to other groups of Antarctic organisms or the seaweed communities of other regions of the world, Antarctic macroalgae remain less studied. This is especially true in several areas of knowledge as their actual biodiversity, their evolutionary history and patterns, some aspects of their ecology or the total extent of their relations with other Antarctic organisms and their environment. Aiming to address the lack of knowledge of these areas, we aimed to extend it by focusing our work in several key aspects of Antarctic seaweed biology. As so, we tried to respond several specific questions regarding the topics above mentioned. In this context, we studied biodiversity of seaweed communities that are present in the South Shetland Islands. For that, we tried to identify the composition and influencing factors of the seaweed assemblages present in Deception Island. We also studied how seaweed biodiversity affects Antarctic epiphytic diatoms richness, studying the composition of them, both from Deception and Livingston islands. Moreover, we tried to expand the data with evolutionary relevance by analysing the nuclear DNA content and ploidy levels (C values), as well as the nuclear developmental patterning of some common Antarctic seaweed species with no previous data for those characters. This was achieved by using a fluorimetry technique that sets a reference for comparison for future studies on those parameters. Additionally, we condensed the latest knowledge on the chemical ecology of seaweeds and other organisms from Antarctica, and tried to expand it by investigating the potential antimicrobial activity of these seaweeds. For this, we tested their natural extracts against several Antarctic microorganisms and identified ... |
author2 |
Gómez Garreta, Ma. Amelia Rull, Jordi Universitat de Barcelona. Departament de Biologia, Sanitat i Medi Ambient |
format |
Doctoral or Postdoctoral Thesis |
author |
Martín Martín, Rafael Pablo |
author_facet |
Martín Martín, Rafael Pablo |
author_sort |
Martín Martín, Rafael Pablo |
title |
Benthic marine algae from South Shetland Islands (Antarctica): biodiversity and evolutionary patterns |
title_short |
Benthic marine algae from South Shetland Islands (Antarctica): biodiversity and evolutionary patterns |
title_full |
Benthic marine algae from South Shetland Islands (Antarctica): biodiversity and evolutionary patterns |
title_fullStr |
Benthic marine algae from South Shetland Islands (Antarctica): biodiversity and evolutionary patterns |
title_full_unstemmed |
Benthic marine algae from South Shetland Islands (Antarctica): biodiversity and evolutionary patterns |
title_sort |
benthic marine algae from south shetland islands (antarctica): biodiversity and evolutionary patterns |
publisher |
Universitat de Barcelona |
publishDate |
2021 |
url |
http://hdl.handle.net/2445/184229 http://hdl.handle.net/10803/673828 |
long_lat |
ENVELOPE(-60.633,-60.633,-62.950,-62.950) |
geographic |
Antarctic Deception Island South Shetland Islands The Antarctic |
geographic_facet |
Antarctic Deception Island South Shetland Islands The Antarctic |
genre |
Antarc* Antarctic Antarctica Deception Island South Shetland Islands |
genre_facet |
Antarc* Antarctic Antarctica Deception Island South Shetland Islands |
op_relation |
Tesis Doctorals - Departament - Biologia, Sanitat i Medi Ambient http://hdl.handle.net/2445/184229 http://hdl.handle.net/10803/673828 |
op_rights |
(c) Martín Martín, Rafael Pablo, 2022 info:eu-repo/semantics/openAccess |
_version_ |
1790593697566425088 |