Monothalamous foraminifera from Admiralty Bay, King George Island, West Antarctica

• Autorzy: Majewski W , Lecroq B. , Sinniger F. , Pawlowski J.
• Języki publikacji: EN

Abstrakty

EN

During the late 2007 austral summer, 20 sediment samples were collected in Admiralty Bay (King George Island, South Shetlands, West Antarctica) from 8 down to 254 m water-depth (mwd). The samples yielded abundant assemblage of monothalamous benthic foraminifera, belonging to at least 40 morphospecies. They constituted the first such collection from Antarctic Peninsula fjords and provided a new insight into this group's diversity and distribution. Among organic-walled taxa, Psammophaga sp., Allogromia cf. crystalli- fera, and three morphotypes of Gloiogullmia were especially abundant. Agglutinated forms were dominated by Hippocrepinella hirudinea, Psammosphaera spp., Lagenammina spp., and various mudballs. Although, the majority of the morphotypes were known from other high-latitude locations, some were reported for the first time. Our quantitative data (>125 |m) showed the greatest differences between monothalamous foraminifera assemblages at shallowest water depths above 50 mwd. The deepest assemblages from between 179 and 254 mwd, were most similar, suggesting uniform near-bottom conditions at ~200 mwd throughout the Admiralty Bay.

Słowa kluczowe

EN

Admiralty Bay; Antarctic; benthic foraminifera; morphospecies; West Antarctic; distribution; King George Island

• Wydawca: -
• Czasopismo: Polish Polar Research
• Rocznik: 2007
• Tom: 28
• Numer: 3
• Opis fizyczny: p.187-210,fig.,ref.

Twórcy

autor

Majewski W

• University of Geneva, Sciences III, 30 Quai Ernest Ansermet, CH 1211 Geneve 4, Switzerland

autor

Lecroq B.

autor

Sinniger F.

autor

Pawlowski J.

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