Antarctic Benthic Fauna in the Global Climate Change

Kidawa, Anna; Janecki, Tomasz

doi:10.2478/v10190-010-0006-5

Cited by 2 publications

(2 citation statements)

References 81 publications

(130 reference statements)

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“…The biplot depicting the result of the PCA (Figure 7) indicates two separate clusters of stations, with Southern Ocean stations grouped with a limited number of southern Atlantic stations situated below 52 • S latitude, and other Atlantic stations grouped together. This split therefore appears to be marked by the Antarctic Polar Front, which has previously been discussed to form a biogeographical boundary that has delineated benthic faunal diversity and richness [147][148][149]. The role of the Antarctic Circumpolar Current in exhibiting a strong influence on environmental variables [150] and in preventing the latitudinal traversal of species is well-known, but given the high similarity of community composition between regions in this study, it does not influence this at higher taxonomic levels.…”

Section: Environmental Drivers In Community Compositionmentioning

confidence: 55%

Pan-Atlantic Comparison of Deep-Sea Macro- and Megabenthos

et al. 2023

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Deep-sea benthic fauna is vital for a well-functioning marine ecosystem but is increasingly under threat from a changing environment. To monitor and conserve this fauna, an understanding of their large-scale spatial and bathymetric distribution and their environmental drivers is necessary. In this study, we conduct a multivariate analysis on abundance benthic fauna data collected at the phylum and multitaxon levels using an epibenthic sledge (EBS) across the Atlantic, and identify the environmental factors that affect such data. Our findings show a decrease in abundance with depth in most of the Atlantic but find relatively heterogeneous abundances with depth within the Southern Ocean. Principal component analyses indicate differences in environmental conditions south of the Antarctic Polar Front (~52° S), outlining contrasts in the quantities of macronutrients and physical factors. Despite this, community composition seemed markedly similar throughout the Atlantic with the Antarctic Circumpolar Current seemingly not affecting benthic community composition for higher taxonomic levels. Those differences that did occur were largely caused by benthic chlorophyll, benthic iron, and surface silicate through a Bio-ENV. Overall, we argue that further large-scale spatial and bathymetric distribution studies are important amid environmental changes that are driving shifts in benthic community abundance and composition.

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Section: Environmental Drivers In Community Compositionmentioning

confidence: 55%

Pan-Atlantic Comparison of Deep-Sea Macro- and Megabenthos

et al. 2023

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“…However, those putative drifts are zoologically restricted to some species of litholid crustaceans and geographically limited to the continental slope of the Bellingshausen Sea, the Balleny Islands and the Antarctic Peninsula (García Raso et al . 2005 and cited literature), the latter with a higher warming threat (see Kidawa & Janecki 2011 and references therein). A similar situation occurred for litholids from the sub-Antarctic Kerguelen region (Macpherson 2004) and Arctic waters (Starikov et al .…”

Section: Discussionmentioning

confidence: 99%

Inhabitant or visitor? Unexpected finding of Aglaophenia (Cnidaria, Hydrozoa) in Antarctic waters

Cantero

2017

Antarctic Science

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Benthic hydrozoans are one of the most speciose and characteristic taxa from the Antarctic region, with a high number of endemic species, but diversity at the genus level is low and some families with world wide distribution are unrepresented. This is the case of the family Aglaopheniidae. A new species to science of the genus Aglaophenia Lamouroux has been found in the eastern end of the Weddell Sea, at depths of 65–116 m, within the material obtained by the German Antarctic expedition ANT XV/3. This finding constitutes a new record for the Weddell Sea fauna, the first evidence of the genus for the Polar Regions, and even the family Aglaopheniidae from Antarctic waters. The material has been accurately examined and described. Literature concerning the species of Aglaophenia from the sub-Antarctic and other close areas has been reviewed and, as a result, a checklist of 20 species, with their corresponding distribution, is given. The material examined does not agree with any of the species and therefore it is described as a new species. Some possible scenarios for the presence of an aglaopheniid in Antarctic waters are discussed (e.g. alien species, relict, global climate change, microhabitat).

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Antarctic Benthic Fauna in the Global Climate Change

Cited by 2 publications

References 81 publications

Pan-Atlantic Comparison of Deep-Sea Macro- and Megabenthos

Pan-Atlantic Comparison of Deep-Sea Macro- and Megabenthos

Inhabitant or visitor? Unexpected finding of Aglaophenia (Cnidaria, Hydrozoa) in Antarctic waters

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