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Late Pleistocene Environmental Factors defining the Black Sea, and Submerged Landscapes on the Western Continental Shelf ArchiMer
Lericolais, Gilles.
The Black Sea semi-enclosed basin is bounded by Europe, Asia Minor and the Caucasus and is ultimately connected to the Atlantic Ocean via the Mediterranean and Aegean seas and various straits. The Bosporus Strait connects it to the Sea of Marmara, and the Dardanelles Strait connects it to the Aegean Sea region of the Mediterranean. For about 15 years the sedimentary systems of the northwestern part of the Black Sea extending from the continental shelf and slope down to the deep-sea zone have been studied using geophysical and coring techniques. These results provide a robust record of water-level fluctuations in the Black Sea since the Last Glacial Maximum (LGM) and thereby shed new light on its disputed aspects. The deep-sea fan studies demonstrate that...
Tipo: Text Palavras-chave: Black Sea basin; Late Pleistocene environmental factors; Marine sedimentology research; Submerged landscapes; Water-level fluctuation; Western continental shelf.
Ano: 2017 URL: http://archimer.ifremer.fr/doc/00391/50264/51052.pdf
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Trophic interactions among sympatric zooplanktivorous fish species in volume change conditions in a large, shallow, tropical lake Neotropical Ichthyology
Moncayo-Estrada,Rodrigo; Lind,Owen T; Escalera-Gallardo,Carlos.
Significant reductions in the water volume of shallow lakes impose a restriction on species segregation promoting more interactions in the trophic relationships. The diets of three closely related zooplanktivorous silversides belonging to the Atherinopsidae species flock of lake Chapala , Mexico, were analyzed at two sites (Chirostoma jordani, C. labarcae, and C. consocium). Diets were described in critical shallow (August 2000) and volume recovery conditions (August 2005). Diets included mainly cladocerans (Bosmina, Ceriodaphnia, and Daphnia) and copepods (Cyclops). A significant difference in diets was detected when comparing years (MRPP analysis, A = 0.22, p < 0.0001) and sites at different years (MRPP analysis, A = 0.17, p = 0.004). According to...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Niche breadth; Silversides; Segregation; Water-level fluctuation.
Ano: 2011 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252011000100016
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