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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ftdoajarticles:oai:doaj.org/article:65949bbf05124f87a3bdda618fe574fd 2023-05-15T13:46:32+02:00 Summer Epiphytic Diatoms from Terra Nova Bay and Cape Evans (Ross Sea, Antarctica)--A Synthesis and Final Conclusions. Roksana Majewska Peter Convey Mario De Stefano 2016-01-01T00:00:00Z https://doi.org/10.1371/journal.pone.0153254 https://doaj.org/article/65949bbf05124f87a3bdda618fe574fd EN eng Public Library of Science (PLoS) http://europepmc.org/articles/PMC4831778?pdf=render https://doaj.org/toc/1932-6203 1932-6203 doi:10.1371/journal.pone.0153254 https://doaj.org/article/65949bbf05124f87a3bdda618fe574fd PLoS ONE, Vol 11, Iss 4, p e0153254 (2016) Medicine R Science Q article 2016 ftdoajarticles https://doi.org/10.1371/journal.pone.0153254 2022-12-31T01:34:57Z 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 microfauna, 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 Directory of Open Access Journals: DOAJ Articles 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 |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Medicine R Science Q |
spellingShingle |
Medicine R Science Q Roksana Majewska Peter Convey Mario De Stefano Summer Epiphytic Diatoms from Terra Nova Bay and Cape Evans (Ross Sea, Antarctica)--A Synthesis and Final Conclusions. |
topic_facet |
Medicine R Science Q |
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 microfauna, 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. |
format |
Article in Journal/Newspaper |
author |
Roksana Majewska Peter Convey Mario De Stefano |
author_facet |
Roksana Majewska Peter Convey Mario De Stefano |
author_sort |
Roksana Majewska |
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. |
publisher |
Public Library of Science (PLoS) |
publishDate |
2016 |
url |
https://doi.org/10.1371/journal.pone.0153254 https://doaj.org/article/65949bbf05124f87a3bdda618fe574fd |
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_source |
PLoS ONE, Vol 11, Iss 4, p e0153254 (2016) |
op_relation |
http://europepmc.org/articles/PMC4831778?pdf=render https://doaj.org/toc/1932-6203 1932-6203 doi:10.1371/journal.pone.0153254 https://doaj.org/article/65949bbf05124f87a3bdda618fe574fd |
op_doi |
https://doi.org/10.1371/journal.pone.0153254 |
container_title |
PLOS ONE |
container_volume |
11 |
container_issue |
4 |
container_start_page |
e0153254 |
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1766244013816414208 |