Summer Epiphytic Diatoms from Terra Nova Bay and Cape Evans (Ross Sea, Antarctica) - A Synthesis and Final Conclusions
Despite recent advances in polar marine biology and related fields, many aspects of the ecological interactions that are crucial for the functioning of Antarctic shallow water habitats remain poorly understood. Although epiphytic diatoms play an essential role in the Antarctic marine food web, basic...
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ftuncampaniairis:oai:iris.unicampania.it:11591/372420 2024-04-14T08:03:52+00:00 Summer Epiphytic Diatoms from Terra Nova Bay and Cape Evans (Ross Sea, Antarctica) - A Synthesis and Final Conclusions Majewska, Roksana Convey, Peter DE STEFANO, Mario Majewska, Roksana Convey, Peter DE STEFANO, Mario 2016 http://hdl.handle.net/11591/372420 https://doi.org/10.1371/journal.pone.0153254 http://www.plosone.org/article/fetchObject.action?uri=info:doi/10.1371/journal.pone.0153254&representation=PDF eng eng info:eu-repo/semantics/altIdentifier/wos/WOS:000374131700030 volume:11 issue:4 firstpage:e0153254 journal:PLOS ONE http://hdl.handle.net/11591/372420 doi:10.1371/journal.pone.0153254 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-84964407581 http://www.plosone.org/article/fetchObject.action?uri=info:doi/10.1371/journal.pone.0153254&representation=PDF info:eu-repo/semantics/openAccess Antarctic Region Bay Diatom Expedition Geography Marine Biology Microscopy Electron Scanning Season Seaweed Ecosystem Food Chain Medicine (all) Biochemistry Genetics and Molecular Biology (all) Agricultural and Biological Sciences (all) info:eu-repo/semantics/article 2016 ftuncampaniairis https://doi.org/10.1371/journal.pone.0153254 2024-03-21T16:09:38Z Despite recent advances in polar marine biology and related fields, many aspects of the ecological interactions that are crucial for the functioning of Antarctic shallow water habitats remain poorly understood. Although epiphytic diatoms play an essential role in the Antarctic marine food web, basic information regarding their ecology, biodiversity and biogeography is largely unavailable. Here, we synthesise studies on Ross Sea epiphytic diatoms collected during 11 summer Antarctic expeditions between the years 1989/90 and 2011/12, presenting a full list of diatom taxa associated with three macroalgal species (Iridaea cordata, Phyllophora antarctica, and Plocamium cartilagineum) and their epiphytic sessile fauna. Diatom communities found during the three summer months at various depths and sampling stations differed significantly in terms of species composition, growth form structure and abundances. Densities ranged from 21 to >8000 cells mm(-2), and were significantly higher on the surface of epiphytic micro-fauna than on any of the macroalgal species examined. Generally, host organisms characterized by higher morphological heterogeneity (sessile micro-fauna, ramified Plocamium) supported richer diatom communities than those with more uniform surfaces (Iridaea). Differences between epiphytic communities associated with different macroalgae were reflected better in species composition than in growth form structure. The latter changed significantly with season, which was related strongly to the changing ice conditions. A general trend towards an increasing number of erect forms in deeper waters and tube-dwelling diatoms in the shallowest sites (2-5 m) was also observed. This study explores further important and largely previously unknown aspects of relationships and interactions between Antarctic epiphytic diatoms and their micro-and macro-environments. Article in Journal/Newspaper Antarc* Antarctic Antarctica Ross Sea Università degli Studi della Campania "Luigi Vanvitelli": CINECA IRIS V: Antarctic The Antarctic Ross Sea Terra Nova Bay Cape Evans ENVELOPE(161.550,161.550,-75.100,-75.100) PLOS ONE 11 4 e0153254 |
institution |
Open Polar |
collection |
Università degli Studi della Campania "Luigi Vanvitelli": CINECA IRIS V: |
op_collection_id |
ftuncampaniairis |
language |
English |
topic |
Antarctic Region Bay Diatom Expedition Geography Marine Biology Microscopy Electron Scanning Season Seaweed Ecosystem Food Chain Medicine (all) Biochemistry Genetics and Molecular Biology (all) Agricultural and Biological Sciences (all) |
spellingShingle |
Antarctic Region Bay Diatom Expedition Geography Marine Biology Microscopy Electron Scanning Season Seaweed Ecosystem Food Chain Medicine (all) Biochemistry Genetics and Molecular Biology (all) Agricultural and Biological Sciences (all) Majewska, Roksana Convey, Peter DE STEFANO, Mario Summer Epiphytic Diatoms from Terra Nova Bay and Cape Evans (Ross Sea, Antarctica) - A Synthesis and Final Conclusions |
topic_facet |
Antarctic Region Bay Diatom Expedition Geography Marine Biology Microscopy Electron Scanning Season Seaweed Ecosystem Food Chain Medicine (all) Biochemistry Genetics and Molecular Biology (all) Agricultural and Biological Sciences (all) |
description |
Despite recent advances in polar marine biology and related fields, many aspects of the ecological interactions that are crucial for the functioning of Antarctic shallow water habitats remain poorly understood. Although epiphytic diatoms play an essential role in the Antarctic marine food web, basic information regarding their ecology, biodiversity and biogeography is largely unavailable. Here, we synthesise studies on Ross Sea epiphytic diatoms collected during 11 summer Antarctic expeditions between the years 1989/90 and 2011/12, presenting a full list of diatom taxa associated with three macroalgal species (Iridaea cordata, Phyllophora antarctica, and Plocamium cartilagineum) and their epiphytic sessile fauna. Diatom communities found during the three summer months at various depths and sampling stations differed significantly in terms of species composition, growth form structure and abundances. Densities ranged from 21 to >8000 cells mm(-2), and were significantly higher on the surface of epiphytic micro-fauna than on any of the macroalgal species examined. Generally, host organisms characterized by higher morphological heterogeneity (sessile micro-fauna, ramified Plocamium) supported richer diatom communities than those with more uniform surfaces (Iridaea). Differences between epiphytic communities associated with different macroalgae were reflected better in species composition than in growth form structure. The latter changed significantly with season, which was related strongly to the changing ice conditions. A general trend towards an increasing number of erect forms in deeper waters and tube-dwelling diatoms in the shallowest sites (2-5 m) was also observed. This study explores further important and largely previously unknown aspects of relationships and interactions between Antarctic epiphytic diatoms and their micro-and macro-environments. |
author2 |
Majewska, Roksana Convey, Peter DE STEFANO, Mario |
format |
Article in Journal/Newspaper |
author |
Majewska, Roksana Convey, Peter DE STEFANO, Mario |
author_facet |
Majewska, Roksana Convey, Peter DE STEFANO, Mario |
author_sort |
Majewska, Roksana |
title |
Summer Epiphytic Diatoms from Terra Nova Bay and Cape Evans (Ross Sea, Antarctica) - A Synthesis and Final Conclusions |
title_short |
Summer Epiphytic Diatoms from Terra Nova Bay and Cape Evans (Ross Sea, Antarctica) - A Synthesis and Final Conclusions |
title_full |
Summer Epiphytic Diatoms from Terra Nova Bay and Cape Evans (Ross Sea, Antarctica) - A Synthesis and Final Conclusions |
title_fullStr |
Summer Epiphytic Diatoms from Terra Nova Bay and Cape Evans (Ross Sea, Antarctica) - A Synthesis and Final Conclusions |
title_full_unstemmed |
Summer Epiphytic Diatoms from Terra Nova Bay and Cape Evans (Ross Sea, Antarctica) - A Synthesis and Final Conclusions |
title_sort |
summer epiphytic diatoms from terra nova bay and cape evans (ross sea, antarctica) - a synthesis and final conclusions |
publishDate |
2016 |
url |
http://hdl.handle.net/11591/372420 https://doi.org/10.1371/journal.pone.0153254 http://www.plosone.org/article/fetchObject.action?uri=info:doi/10.1371/journal.pone.0153254&representation=PDF |
long_lat |
ENVELOPE(161.550,161.550,-75.100,-75.100) |
geographic |
Antarctic The Antarctic Ross Sea Terra Nova Bay Cape Evans |
geographic_facet |
Antarctic The Antarctic Ross Sea Terra Nova Bay Cape Evans |
genre |
Antarc* Antarctic Antarctica Ross Sea |
genre_facet |
Antarc* Antarctic Antarctica Ross Sea |
op_relation |
info:eu-repo/semantics/altIdentifier/wos/WOS:000374131700030 volume:11 issue:4 firstpage:e0153254 journal:PLOS ONE http://hdl.handle.net/11591/372420 doi:10.1371/journal.pone.0153254 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-84964407581 http://www.plosone.org/article/fetchObject.action?uri=info:doi/10.1371/journal.pone.0153254&representation=PDF |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1371/journal.pone.0153254 |
container_title |
PLOS ONE |
container_volume |
11 |
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4 |
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e0153254 |
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