New data on the taxonomic composition of macroinvertebrates in marine habitats from the Livingston Island, Antarctica
Antarctic marine organisms are characterised by a significant level of endemism. This is due to geological, climatological and oceanographic reasons, such as the break-up of Antarctida from Gondwana during the Cretaceous; the formation of a circumpolar current; the extremely low water temperatures (...
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Format: | Conference Object |
Language: | English |
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Pensoft Publishers
2019
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Online Access: | https://doi.org/10.3897/aca.2.e46493 https://aca.pensoft.net/article/46493/ |
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Open Polar |
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Pensoft Publishers |
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ftpensoft |
language |
English |
topic |
Maritime Antarctica macrozoobenthos meiobenthos Parborlasia corrugatus Barrukia cristata Nacella concinna Aequiyoldia eightsii |
spellingShingle |
Maritime Antarctica macrozoobenthos meiobenthos Parborlasia corrugatus Barrukia cristata Nacella concinna Aequiyoldia eightsii Kenderov,Lyubomir Evtimova,Vesela Mitov,Plamen Apostolov,Apostol Uzunova,Eliza Kenderov,Marian New data on the taxonomic composition of macroinvertebrates in marine habitats from the Livingston Island, Antarctica |
topic_facet |
Maritime Antarctica macrozoobenthos meiobenthos Parborlasia corrugatus Barrukia cristata Nacella concinna Aequiyoldia eightsii |
description |
Antarctic marine organisms are characterised by a significant level of endemism. This is due to geological, climatological and oceanographic reasons, such as the break-up of Antarctida from Gondwana during the Cretaceous; the formation of a circumpolar current; the extremely low water temperatures (close to freezing); the short summer seasons. The South Shetland Islands (West Antarctic Peninsula) are one of 29 known biogeographic areas in the Southern Hemisphere (Griffiths et al. 2009). King George Island is the largest island from the South Shetlands and eight countries have their polar bases there. Marine bottom macroinvertebrates from the surrounding seawaters are very well studied (Siciński et al. 2011). Less research was carried out in the region of the nearby Livingston Island. There are located two polar bases: "St. Kliment Ohridski" (Bulgaria) and "Juan Carlos I" (Spain). We can assume that in the seawaters of the South Bay we can also expect a rich bottom macroinvertebrate fauna because of the similar conditions and the close distance between the two islands. The aim of this study is to present the first Bulgarian results on the taxonomic composition of marine macroinvertebrates from the South Bay, Livingston Island. The samples were collected during the XXVIIth Bulgarian Antarctic Expedition (2018–2019 austral summer). Various sites in four areas were sampled: the coastal zone in front of the Bulgarian Polar Base (Costa Bulgara); a small bay south of Cape Hesperides (Reservnoto port); Johnsons Dock Bay near the Spanish research station and Walker Bay near Hannah Point. Samples were collected mainly through bottom trawling at depths of 2 to 20 meters on different types of bottom substrates using Zodiac boats. A total of 11 macrozoobenthos samples were collected. Our preliminary results show that the main macrozoobenthic species are well known in the seawaters of the South Shetlands and usually they have a circumpolar distribution. At the site with soft muddy bottoms (Johnsons Dock Bay), the corrugated ribbon worm Parborlasia corrugatus (McIntosh, 1876) (order Heteronemertea, class Pilidiophora, phylum Nemertea) as well as ascidians (order Phlebobranchia, class Ascidiacea, phylum Chordata) had the highest biomass. The most abundant in the Johnsons Dock Bay were the Antarctic bivalve Aequiyoldia eightsii (Jay, 1839) (order Nuculanida, class Bivalvia, phylum Mollusca); the scale worm Barrukia cristata (Willey, 1902) and the catworm Aglaophamus trissophyllus (Grube, 1877) (both of order Phyllodocida, class Polychaeta, phyllum Annelida). The seroid isopod Spinoserolis beddardi (Calman, 1920) (order Isopoda, class Malacostraca, phyllum Arthropoda) dominated in the muddy / sandy bottom of Hannah Point. The habitats of the rocky bottom (Costa Bulgara) were inhabited mainly by crustaceans (order Aphipoda, class Malacostraca, phyllum Arthropoda) and gastropods (phylum Mollusca). In the tidal zone of this habitat (0–2m), the predominant species was the Antarctic limplet Nacella concinna (Strebel, 1908) (order Patellogastropoda, class Gastropoda, phylum Mollusca). |
format |
Conference Object |
author |
Kenderov,Lyubomir Evtimova,Vesela Mitov,Plamen Apostolov,Apostol Uzunova,Eliza Kenderov,Marian |
author_facet |
Kenderov,Lyubomir Evtimova,Vesela Mitov,Plamen Apostolov,Apostol Uzunova,Eliza Kenderov,Marian |
author_sort |
Kenderov,Lyubomir |
title |
New data on the taxonomic composition of macroinvertebrates in marine habitats from the Livingston Island, Antarctica |
title_short |
New data on the taxonomic composition of macroinvertebrates in marine habitats from the Livingston Island, Antarctica |
title_full |
New data on the taxonomic composition of macroinvertebrates in marine habitats from the Livingston Island, Antarctica |
title_fullStr |
New data on the taxonomic composition of macroinvertebrates in marine habitats from the Livingston Island, Antarctica |
title_full_unstemmed |
New data on the taxonomic composition of macroinvertebrates in marine habitats from the Livingston Island, Antarctica |
title_sort |
new data on the taxonomic composition of macroinvertebrates in marine habitats from the livingston island, antarctica |
publisher |
Pensoft Publishers |
publishDate |
2019 |
url |
https://doi.org/10.3897/aca.2.e46493 https://aca.pensoft.net/article/46493/ |
long_lat |
ENVELOPE(-60.613,-60.613,-62.654,-62.654) ENVELOPE(-60.617,-60.617,-62.650,-62.650) ENVELOPE(-60.350,-60.350,-62.665,-62.665) ENVELOPE(-60.368,-60.368,-62.660,-62.660) ENVELOPE(-60.500,-60.500,-62.600,-62.600) ENVELOPE(168.683,168.683,-77.517,-77.517) ENVELOPE(-60.783,-60.783,-62.467,-62.467) ENVELOPE(-36.783,-36.783,-54.117,-54.117) ENVELOPE(-63.579,-63.579,-64.870,-64.870) ENVELOPE(-60.700,-60.700,-62.633,-62.633) |
geographic |
Antarctic Antarctic Peninsula Austral Hannah Hannah Point Johnsons Johnsons Dock King George Island Livingston Island McIntosh Nacella Small Bay South Bay South Shetland Islands The Antarctic Walker Bay |
geographic_facet |
Antarctic Antarctic Peninsula Austral Hannah Hannah Point Johnsons Johnsons Dock King George Island Livingston Island McIntosh Nacella Small Bay South Bay South Shetland Islands The Antarctic Walker Bay |
genre |
Antarc* Antarctic Antarctic Peninsula Antarctica King George Island Livingston Island South Shetland Islands Walker Bay |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Antarctica King George Island Livingston Island South Shetland Islands Walker Bay |
op_source |
ARPHA Conference Abstracts 2: e46493 |
op_relation |
info:eu-repo/semantics/altIdentifier/eissn/2603-3925 info:eu-repo/grantAgreement/EC/FP7/9708190 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.3897/aca.2.e46493 |
container_title |
ARPHA Conference Abstracts |
container_volume |
2 |
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1766276972656197632 |
spelling |
ftpensoft:10.3897/aca.2.e46493 2023-05-15T14:05:14+02:00 New data on the taxonomic composition of macroinvertebrates in marine habitats from the Livingston Island, Antarctica Kenderov,Lyubomir Evtimova,Vesela Mitov,Plamen Apostolov,Apostol Uzunova,Eliza Kenderov,Marian 2019 text/html https://doi.org/10.3897/aca.2.e46493 https://aca.pensoft.net/article/46493/ en eng Pensoft Publishers info:eu-repo/semantics/altIdentifier/eissn/2603-3925 info:eu-repo/grantAgreement/EC/FP7/9708190 info:eu-repo/semantics/openAccess ARPHA Conference Abstracts 2: e46493 Maritime Antarctica macrozoobenthos meiobenthos Parborlasia corrugatus Barrukia cristata Nacella concinna Aequiyoldia eightsii Conference Abstract 2019 ftpensoft https://doi.org/10.3897/aca.2.e46493 2022-03-01T12:41:05Z Antarctic marine organisms are characterised by a significant level of endemism. This is due to geological, climatological and oceanographic reasons, such as the break-up of Antarctida from Gondwana during the Cretaceous; the formation of a circumpolar current; the extremely low water temperatures (close to freezing); the short summer seasons. The South Shetland Islands (West Antarctic Peninsula) are one of 29 known biogeographic areas in the Southern Hemisphere (Griffiths et al. 2009). King George Island is the largest island from the South Shetlands and eight countries have their polar bases there. Marine bottom macroinvertebrates from the surrounding seawaters are very well studied (Siciński et al. 2011). Less research was carried out in the region of the nearby Livingston Island. There are located two polar bases: "St. Kliment Ohridski" (Bulgaria) and "Juan Carlos I" (Spain). We can assume that in the seawaters of the South Bay we can also expect a rich bottom macroinvertebrate fauna because of the similar conditions and the close distance between the two islands. The aim of this study is to present the first Bulgarian results on the taxonomic composition of marine macroinvertebrates from the South Bay, Livingston Island. The samples were collected during the XXVIIth Bulgarian Antarctic Expedition (2018–2019 austral summer). Various sites in four areas were sampled: the coastal zone in front of the Bulgarian Polar Base (Costa Bulgara); a small bay south of Cape Hesperides (Reservnoto port); Johnsons Dock Bay near the Spanish research station and Walker Bay near Hannah Point. Samples were collected mainly through bottom trawling at depths of 2 to 20 meters on different types of bottom substrates using Zodiac boats. A total of 11 macrozoobenthos samples were collected. Our preliminary results show that the main macrozoobenthic species are well known in the seawaters of the South Shetlands and usually they have a circumpolar distribution. At the site with soft muddy bottoms (Johnsons Dock Bay), the corrugated ribbon worm Parborlasia corrugatus (McIntosh, 1876) (order Heteronemertea, class Pilidiophora, phylum Nemertea) as well as ascidians (order Phlebobranchia, class Ascidiacea, phylum Chordata) had the highest biomass. The most abundant in the Johnsons Dock Bay were the Antarctic bivalve Aequiyoldia eightsii (Jay, 1839) (order Nuculanida, class Bivalvia, phylum Mollusca); the scale worm Barrukia cristata (Willey, 1902) and the catworm Aglaophamus trissophyllus (Grube, 1877) (both of order Phyllodocida, class Polychaeta, phyllum Annelida). The seroid isopod Spinoserolis beddardi (Calman, 1920) (order Isopoda, class Malacostraca, phyllum Arthropoda) dominated in the muddy / sandy bottom of Hannah Point. The habitats of the rocky bottom (Costa Bulgara) were inhabited mainly by crustaceans (order Aphipoda, class Malacostraca, phyllum Arthropoda) and gastropods (phylum Mollusca). In the tidal zone of this habitat (0–2m), the predominant species was the Antarctic limplet Nacella concinna (Strebel, 1908) (order Patellogastropoda, class Gastropoda, phylum Mollusca). Conference Object Antarc* Antarctic Antarctic Peninsula Antarctica King George Island Livingston Island South Shetland Islands Walker Bay Pensoft Publishers Antarctic Antarctic Peninsula Austral Hannah ENVELOPE(-60.613,-60.613,-62.654,-62.654) Hannah Point ENVELOPE(-60.617,-60.617,-62.650,-62.650) Johnsons ENVELOPE(-60.350,-60.350,-62.665,-62.665) Johnsons Dock ENVELOPE(-60.368,-60.368,-62.660,-62.660) King George Island Livingston Island ENVELOPE(-60.500,-60.500,-62.600,-62.600) McIntosh ENVELOPE(168.683,168.683,-77.517,-77.517) Nacella ENVELOPE(-60.783,-60.783,-62.467,-62.467) Small Bay ENVELOPE(-36.783,-36.783,-54.117,-54.117) South Bay ENVELOPE(-63.579,-63.579,-64.870,-64.870) South Shetland Islands The Antarctic Walker Bay ENVELOPE(-60.700,-60.700,-62.633,-62.633) ARPHA Conference Abstracts 2 |