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Registros recuperados: 7
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Holocene coastal changes and infilling of the La Perroche marsh (French Atlantic coast) ArchiMer
Clave, B; Masse, L; Carbonel, P; Tastet, Jp.
The La Perroche marsh is a small Holocene marsh on the south-western coast of the Oleron island (Bay of Biscay, France) presently occupied by a freshwater swamp and separated from the ocean by a continuous sand dune ridge. The study of its infill shows first basal conglomeratic deposits with calcareous pebbles on a Cenomanian rough substrate. The Holocene infill since 6000 years BP begins with a very fast sedimentation of sands. Then, the sedimentation becomes finer, with lagoonal to freshwater influences recorded by ostracods. The distribution of these deposits inside the marsh is asymmetric, with a thick sandy-gravely layer in the eastern part and a succession of sands, clays and organic layers in the western part. Communication with the sea is episodic,...
Tipo: Text Palavras-chave: Changements côtiers; Marais maritime; Holocène; Ostracodes; Sédiments; Coastal changes; Coastal salt marsh; Holocene; Ostracods; Sediments.
Ano: 2001 URL: http://archimer.ifremer.fr/doc/00322/43349/42877.pdf
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Intraspecific variation in the shell ornamentation of benthic Ostracoda (Crustacea) from Kiribati, Pacific Ocean ArchiMer
Eagar, Sh.
Twenty four species of ostracod have been found on Tarawa Atoll and fifteen on Kuria Island, Republic of Kiri-bati in the western Pacific Ocean. Thirteen species are common to both atolls. A consistent difference has been discovered in the ostracod faunas of Tarawa and Kuria, with those from Kuria showing coarser texture in the ornamentation than their counterparts from Tarawa. The variation of carapace ornamentation has led to multiple names for a species. A characteristic ornamentation at a particular locality may be a due to a small number of specimens colonising the new locality and having a limited gene pool. Alternatively, any variation in the ornamentation may be a clue to multiple phases of colonisation within a small area.
Tipo: Text Palavras-chave: Ostracodes; Atoll; Benthique; Pacifique; Île; Ostracods; Atoll; Benthic; Pacific; Island.
Ano: 1999 URL: http://archimer.ifremer.fr/doc/00325/43585/44024.pdf
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Levantine intermediate water hydrodynamic and bottom water ventilation in the northern Tyrrhenian Sea over the past 56,000 years: New insights from benthic foraminifera and ostracods ArchiMer
Minto'O, Charlie Morelle Angue; Bassetti, Maria-angela; Morigi, Caterina; Ducassou, Emmanuelle; Toucanne, Samuel; Jouet, Gwenael; Mulder, Thierry.
Foraminifera and ostracods have been quantitatively studied in core MD01-2472, from the upper continental slope (at water depth of 501 m), to evaluate their relationship with bottom water condition variability and decipher the control of the Levantine Intermediate Water (LIW) current on benthic faunas. The occurrence of reworked ostracod species (originating from the continental shelf) and, the presence of shallow water Elphidium/Ammonia benthic foraminifera are used to estimate the degree of along-slope transport at the core site. This has revealed two intervals of along-slope transport also associated with coarse-grained contourite deposits, deposited during the YD and HS2 episodes. Planktonic-benthic foraminiferal and ostracod assemblages reflect...
Tipo: Text Palavras-chave: Ostracods; Foraminifera; LIW; Corsica margin.
Ano: 2015 URL: https://archimer.ifremer.fr/doc/00245/35648/34208.pdf
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Ostracoda and foraminifera from Paleocene (Olinda well), Paraíba Basin, Brazilian Northeast Anais da ABC (AABC)
PIOVESAN,ENELISE K.; MELO,ROBBYSON M.; LOPES,FERNANDO M.; FAUTH,GERSON; COSTA,DENIZE S..
ABSTRACT Paleocene ostracods and planktonic foraminifera from the Maria Farinha Formation, Paraíba Basin, are herein presented. Eleven ostracod species were identified in the genera Cytherella Jones, Cytherelloidea Alexander, Eocytheropteron Alexander, Semicytherura Wagner, Paracosta Siddiqui, Buntonia Howe, Soudanella Apostolescu, Leguminocythereis Howe and, probably, Pataviella Liebau. The planktonic foraminifera are represented by the genera Guembelitria Cushman, Parvularugoglobigerina Hofker, Woodringina Loeblich and Tappan, Heterohelix Ehrenberg, Zeauvigerina Finlay, Muricohedbergella Huber and Leckie, and Praemurica Olsson, Hemleben, Berggren and Liu. The ostracods and foraminifera analyzed indicate an inner shelf paleoenvironment for the studied...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Brazil; Ostracods; Paleocene; Paraíba Basin; Foraminifera.
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000401443
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Paleolimnological inferences based on Oligocene ostracods (Crustacea: Ostracoda) from Tremembé Formation, Southeast Brazil Anais da ABC (AABC)
BERGUE,CRISTIANINI T.; MARANHÃO,MARIA DA SAUDADE A.S.; FAUTH,GERSON.
Non-marine Oligocene ostracods from Tremembé Formation (Taubaté Basin, Southeast Brazil) are studied for the first time. The study reveals rich assemblages which are probably composed of many new taxa, two of which are described here. The sixteen ostracod species registered are classified in the generaCypretta Vávra, Strandesia Stuhlmann,Potamocypris Brady, Heterocypris Claus,Eucypris Vávra, Herpetocypris Brady and Norman, Cytheridella Daday and LimnocythereBrady. Two new species of the latter are herein proposed: L. mandubi sp. nov. and L. katu sp. nov. The succession of ostracod assemblages along the studied core changes conspicuously in composition, abundance and preservation, and are characterized by the following associations:...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Ostracods; Paleolimnology; Taxonomy; Tremembé Formation.
Ano: 2015 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652015000401531
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Pseudocriboconcha prinsi gen. et sp. nov. (Ostracoda) from the late Mississippian (Carboniferous) of the Cantabrian Zone (northern Spain) Naturalis
Sánchez de Posada, L.C.; Sanz-López, J..
A new ostracod found in the Mississippian of the Cantabrian Mountains shows ornamental features similar to Criboconcha Cooper, hitherto known from Mississippian and Pennsylvanian strata of different parts of the world (especially from the U.S.A.). However, some features of this ostracod are very different from the typical characteristcs of the Healdiidae and support bairdiocyproidean affinities. The new genus Pseudocriboconcha (type species Pseudocriboconcha prinsi sp. nov.) is proposed. This species is distinguishedby distinct pits on the lateral surface; a posterior ridge ending in dorsal and ventral spines; a rounded rim parallel to the borders of each valve; and a spine on this rim, above the anterior end and directed dorsally or anterodorsally.
Tipo: Article / Letter to the editor Palavras-chave: Ostracods; Pseudocriboconcha prinsi; Carboniferous; Spain; 38.22.
Ano: 2010 URL: http://www.repository.naturalis.nl/record/361969
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Вертикальное распределение и суточные вертикальные миграции остракод Южной Атлантики IBSS Repository
Драпун, И. Е..
Исследовано вертикальное распределение и особенности суточных вертикальных миграций остракод в слое 0 - 500 м в разных районах южно-атлантического субтропического круговорота. Рассчитаны коэффициенты интенсивности миграций (К500) 16 массовых видов остракод с 7 суточных станций, а также К500 самок, самцов и разновозрастных личинок трех наиболее многочисленных видов - Mikroconchoecia curta, Discoconchoecia elegans и Obtusoecia antarctica. У видов с широкими ареалами наибольшие К% наблюдались в южной части Бразильского течения. Показано влияние слоя скачка температуры и солености на величину К500. С уменьшением градиентов в слое скачка интенсивность миграций усиливалась. К слою скачка также приурочен максимум обилия остракод в верхнем 500-метровом слое....
Tipo: Journal Contribution Palavras-chave: Остракоды; Южно-атлантический субтропический круговорот; Вертикальное распределение; Суточные вертикальные миграции; Коэффициент интенсивности миграций; Ostracods; South-Atlantic subtropical circulation; Vertical distribution; Daily vertical migrations; Coefficients of migration intensity Vertical migrations.
Ano: 2002 URL: http://repository.ibss.org.ua/dspace/handle/99011/409
Registros recuperados: 7
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