Seasonal growth and mortality of Euphausia superba in Admiralty Bay, South Shetland Islands, Antarctica

1991 ◽  
Vol 48 (3) ◽  
pp. 335-342 ◽  
Author(s):  
S. McClatchie ◽  
S. Rakusa-Suszczewski ◽  
K. Filcek
Keyword(s):  
Euphausia Superba ◽  
South Shetland Islands ◽  
Seasonal Growth ◽  
Admiralty Bay ◽  
Shetland Islands

A new Antarctic foraminiferal species for detecting climate change in sub-Recent glacier-proximal sediments

2009 ◽  
Vol 21 (5) ◽  
pp. 439-448 ◽  
Author(s):  
Wojciech Majewski ◽  
Andrzej Tatur
Keyword(s):  
Climate Change ◽  
Climate Warming ◽  
The Arctic ◽  
South Shetland Islands ◽  
King George Island ◽  
Tidewater Glaciers ◽  
Admiralty Bay ◽  
Shetland Islands ◽  
Foraminiferal Species ◽  
Water Depths

AbstractCribroelphidium webbi sp. nov. is the only adequately described sub-Recent elphidiid foraminifer from Antarctica. In Admiralty Bay (King George Island, South Shetland Islands), it is found at several locations within inner fiord setting at water depths between 33 and 165 m, but most commonly shallower than 100 m. In outer basins this foraminifer is absent. In the cores analysed, C. webbi sp. nov. is present in well-constrained sub-Recent horizons that are clearly related to climate warming and deglaciation. These horizons represent a diachronous facies marker rather than a single stratigraphic layer. Cribroelphidium webbi sp. nov. shows clear association with retreating tidewater glaciers, therefore it is an important sensitive glacier-proximal indicator. It appears that it shares similar ecologic affinities with Cribroelphidium excavatum clavatum, which is widely distributed throughout the Arctic.

Stable isotopes identify an ontogenetic niche expansion in Antarctic krill (Euphausia superba) from the South Shetland Islands, Antarctica

2013 ◽  
Vol 160 (6) ◽  
pp. 1311-1323 ◽  
Author(s):  
Michael J. Polito ◽  
Christian S. Reiss ◽  
Wayne Z. Trivelpiece ◽  
William P. Patterson ◽  
Steven D. Emslie
Keyword(s):  
Stable Isotopes ◽  
Antarctic Krill ◽  
Euphausia Superba ◽  
South Shetland Islands ◽  
The South ◽  
Niche Expansion ◽  
Shetland Islands ◽  
Ontogenetic Niche ◽  
Antarctic Krill Euphausia Superba

scholarly journals New records of isopod species of the Antarctic Specially Managed Area No. 1, Admiralty Bay, South Shetland Islands

2017 ◽  
Vol 38 (3) ◽  
pp. 409-419
Author(s):  
Karol Zemko ◽  
Krzysztof Pabis ◽  
Jacek Siciński ◽  
Magdalena Błażewicz
Keyword(s):  
Southern Ocean ◽  
New Records ◽  
South Shetland Islands ◽  
Small Scale ◽  
King George Island ◽  
Admiralty Bay ◽  
Shetland Islands ◽  
The Antarctic ◽  
First Time ◽  
Marine Basins

AbstractAdmiralty Bay (King George Island) is an Antarctic Specially Managed Area and one the most thoroughly studied small-scale marine basins in the Southern Ocean. Our study provides new data on the isopod fauna in this glacially affected fjord. Twelve species of isopods were recorded in this basin for the first time. Six of them were found for the first time in the region of the South Shetland Islands. The highest number of species new for Admiralty Bay were found in the families Munnopsidae (4 species) and Munnidae (3 species).

New data on the occurrence of Acanthocephala in some fish in Admiralty Bay (South Shetland Islands)

2013 ◽  
Vol 58 (4) ◽  
Author(s):  
Krzysztof Zdzitowiecki ◽  
Zdzisław Laskowski
Keyword(s):  
South Shetland Islands ◽  
Admiralty Bay ◽  
Shetland Islands ◽  
Notothenia Coriiceps ◽  
Reverse Situation ◽  
The Mean ◽  
Trematomus Bernacchii ◽  
Notothenia Rossii

AbstractNew data on the infection with Acanthocephala of 33 fish caught in Admiralty Bay in November 2007 to January 2008 are given. These fish belong to 5 species: Notothenia rossii (22 immature specimens), Lindbergichthys nudifrons (n = 7), Trematomus bernacchii (n = 1), T. newnesi (n = 1) and Harpagifer antarcticus (n = 2). Three species of Echinorhynchida: Aspersentis megarhynchus, Metacanthocephalus dalmori and M. johnstoni and four species of Polymorphida: Corynosoma arctocephali, C. bullosum, C. hamanni and C. pseudohamanni, were found. Prevalence of N. rossii and L. nudifrons was 100%. The mean abundance of infection of N. rossii (125.09) was larger than that of Notothenia coriiceps (82.93). Data of infection of N. rossii in 2007 was almost identical with that in 1979 (mean abundance 118.66). The most abundant in this host were A. megarhynchus, M. johnstoni, C. hamanni and C. pseudohamanni (mean abundances 36.36, 29.77, 13.86 and 44.73, respectively). In total Echinorhynchida were more abundant than Polymorphida in 2007/08 (66.18 versus 58.91). Reverse situation was in 1979 (mean abundance 47.36 for Echinorhynchida and 71.3 for Polymorphida. Only 7 L. nudifrons were examined in 2007/08 and Echinorhynchida were more numerous in this host (mean abundance 26.71) than Polymorphida (10.29). Single specimens of other fish were infected with a few Acanthocephala belonging to species recorded in the same hosts with those found in 1978/79.

scholarly journals Geographical Research of the 30th Polish Antarctic Expedition at Arctowski Polish Station (King George Island, South Shetland Islands, Antarctica)

2008 ◽  
Vol 13 (1) ◽  
pp. 51-56 ◽  
Author(s):  
Piotr Angiel
Keyword(s):  
Environmental Conditions ◽  
South Shetland Islands ◽  
King George Island ◽  
Aeolian Transport ◽  
Admiralty Bay ◽  
Shetland Islands ◽  
Geographical Research ◽  
Outwash Plain ◽  
Antarctic Expedition ◽  
Quartz Grains

Abstract This paper presents the scope of geographical research conducted at Arctowski Station during the 30th Polish Antarctic Expedition. The research included meteorological, climatological, geomorphological and glaciological issues. During the expedition, research was conducted on sandur sediments on the outwash plain of Sphinx Glacier, the size of the aeolian transport, intensity of periglacial phenomena, and the way in which environmental conditions are recorded on quartz grains collected on the Admiralty Bay beaches. Detailed measurements of the basic meteorological components were made, geomorphological maps of the outwash plains of Sphinx, Baranowski, and Windy Glaciers were also completed.

Genetic diversity and structure of Euphausia superba in the South Shetland Islands using the mitochondrial ND6 gene

Crustaceana ◽  
2019 ◽  
Vol 92 (11-12) ◽  
pp. 1295-1309
Author(s):  
Yao Dong ◽  
Guangrui Qi ◽  
Chunlei Feng ◽  
Wei Wang ◽  
Fengying Zhang ◽  
...  
Keyword(s):  
Genetic Variation ◽  
Demographic History ◽  
Scientific Information ◽  
Euphausia Superba ◽  
South Shetland Islands ◽  
Sudden Expansion ◽  
The South ◽  
Shetland Islands ◽  
Fisheries Resources ◽  
Genetic Diversity And Structure

Abstract Euphausia superba is an abundant element in the marine plankton on the planet. Despite substantial research on this species, there is no comprehensive understanding of the population genetics of E. superba yet. In this study, the ND6 gene was used to assess the genetic variation in E. superba. In the South Shetland Islands, the population of E. superba shows abundant genetic variation, but we found a lack of genetic structure. An analysis of the demographic history suggested that a sudden expansion has been responsible for its high biomass. Our study could not only broaden our comprehension of E. superba, but also provide more scientific information on fisheries resources exploitation, biodiversity conservation and the maintenance of a proper ecological balance.

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