Annual variation of the ostracod fauna at flamengo bay (2006)
- Authors:
- Autor USP: EICHLER, BEATRIZ BECK - IO
- Unidade: IO
- Subjects: OSTRACODA; ECOLOGIA DE COMUNIDADES
- Language: Português
- Abstract: Flamengo's bay surface is approximately 18 km2 with average 2,5 km wide. Sediments are usually a mixture of sand and pellits at different proportions, typical of low energy environments. Low oxygen, high concentration of organic matter and low pH values were generally recorded at the same stations, thus being related with intense bacterial activity. These places where considered stressful to the alocthonous ostracod fauna. The inverse correlation between oxygen and organic matter defines the faunal distribution inside Flamengo bay, as most of the main species have a similar response to the variation of these abiothic parameters. The Ostracoda fauna inside Flamengo bay may be characterized as typical from well oxygenized coastal marine environments, as even the most abundant species Callistocythere litoralensis, have its distribution restricted by the concentration of organic matter in the sediments. The most abundant species found at this bay, doesn't answer well to the environment stress, as the areas more altered by anthropogenic actions are not favored by an opportunistic response. Even where some dominance is detected, a great number of species is present, indicating more a better exploration of the environmental condition, opposite to a typical opportunistic situation common in more stressful coastal environments. Ostracods are accounted in large numbers during all the study. Very few barren stations were found, being the majority sampled atSaco do Ribeira. At this area very few individuals were found during all the study, probably correlated with its more stressful conditions (shallow waters, hypoxia, less alkali environment, chronic diesel contamination). Among the major species none is seasonal, those who are, accounted for few individuals being rare when found. The most abundant are: Callistocythere litoralensis, Callistocythere ornata, Cushmanidea varibilis, Cyprideis sp., Neomonoceratina mediterrânea, Semixestoleberis sp., Whatleyella sanguinettiae and Xestoleberis sp.. All those species migrate inside the Flamengo bay, compensating any seasonal change that may take place at this environment.
- Imprenta:
- Source:
- Título do periódico: resumos
- Conference titles: Simpósio Brasileiro Oceanografia
-
ABNT
GHISELLI, Renato Olindo e EICHLER, Beatriz Beck. Annual variation of the ostracod fauna at flamengo bay. 2006, Anais.. São Paulo: Instituto Oceanográfico, Universidade de São Paulo, 2006. . Acesso em: 24 abr. 2024. -
APA
Ghiselli, R. O., & Eichler, B. B. (2006). Annual variation of the ostracod fauna at flamengo bay. In resumos. São Paulo: Instituto Oceanográfico, Universidade de São Paulo. -
NLM
Ghiselli RO, Eichler BB. Annual variation of the ostracod fauna at flamengo bay. resumos. 2006 ;[citado 2024 abr. 24 ] -
Vancouver
Ghiselli RO, Eichler BB. Annual variation of the ostracod fauna at flamengo bay. resumos. 2006 ;[citado 2024 abr. 24 ] - Repartition des foraminiferes benthiques dans la zone sud-ouest du systeme estuarien-lagunaire d'iguape-cananeia (bresil)
- Potencial de preservacao de feraminiferos da enseada do flamengo, ubatuba, sp: implicacoes paleoambientais
- Ecologia e distribuição da fauna de ostracodes na Baía da Guanabara.
- Contribuicao a caracterizacao ambiental do litoral norte do estado de sao paulo, com base no estudo de foraminiferos
- Comportement des peuplements de foraminiferes et comparaison avec l'avifaune dans une lagune fortement stratifiée: La lagoa da Conceição (SC, Brésil)
- Variacao na coloracao das carapacas de foraminiferos e ostracodes e suas implicacoes ambientais ao longo de um testemunho coletado na regiao costeira de ubatuba, sp
- Estudo preliminar das condicoes ecologicas das baias de santos e sao vicente (sp) com base na distribuicao de foraminiferos bentonicos
- Levantamento faunistico dos ostracodes no sistema estuarino lagunar de cananeia e iguape, litoral sul de sao paulo
- Ostracodes na Baía de Guanabara, obtidos no Inverno de 2000: resultados preliminares
- Foraminifera as indicators of marine pollutant contamination on the inner continental shelf of southern Brazil
How to cite
A citação é gerada automaticamente e pode não estar totalmente de acordo com as normas