Observações sôbre a fauna bêntica do complexo estuarino-lagunar de Cananéia (SP)

Tommasi, Luiz Roberto

doi:10.1590/s0373-55241970000100003

Cited by 30 publications

(15 citation statements)

References 8 publications

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“…Low salinity generally occurring in the inner sections of estuaries has been noted (Tommasi, 1970;Capitoli et al, 1978;Wu and Richards, 1981) as the principal limiting factor for the occupation of marine species. Consequently, a decreasing gradient of species richness is generally observed towards the internal sectors of estuaries, mainly occupied by estuarine or typically euryhaline species, e.g.…”

Section: Discussionmentioning

confidence: 99%

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Composition and distribution of benthic molluscs on intertidal flats of Paranaguá Bay (Paraná, Brazil)

Boehs¹,

Absher²,

Cruz-Kaled³

2004

Sci. Mar.

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SUMMARY: Mollusc species composition, abundance and spatial distribution were analysed from April 1996 to October 1997 on two tidal flats in Paranaguá Bay (SE Brazil) at the entrance (St. I) (Lat. 25º32'S) and in the intermediate sector (St. II) (Lat. 25º30'S) of the estuary. At St. I, with the highest and least variable salinity, species richness (R = 40) and diversity (H´ = 1; D S = 0.85) were higher than at St. II (R = 22 and H´ = 0.54; D S = 0.57). The tropical clam Anomalocardia brasiliana was the most conspicuous mollusc of the two assemblages, followed by Cerithium atratum, Neritina virginea and Crassostrea sp. at St. I and by Macoma constricta and N. virginea at St. II. On the two flats, the decrease in species richness and abundance towards the upper tidal levels suggests a strong relationship between relative tolerance to physiological stress in the organisms and the degree of immersion/submersion.Key words: Benthic molluscs, species composition, spatial distribution, tidal flats, Anomalocardia brasiliana, Paranaguá Bay, southeastern Brazil. RESUMEN: COMPOSICIÓN Y DISTRIBUCIÓN DE MOLUSCOS BENTÓNICOS EN LLANOS INTERMAREALES DELA BAHÍA DE PARAGUA-NÁ (PARANÁ, BRASIL). -Se ha analizado la composición específica de moluscos, abundancia y distribución espacial en dos llanos intermareales de la bahía de Paraguaná (SE de Brasil), entre abril de 1996 y octubre de 1997, en la boca (estación I) (Lat. 25º32'S) y en el sector intermedio (estación II) (Lat. 25º30' S) del estuario. En la estación I, con la salinidad más elevada y menos variable, la riqueza específica (R = 40) y diversidad (H' = 1; D s = 0.85) fueron superiores a los valores detectados en la estación II (R = 22 y H' = 0.54; D s = 0.57). El bivalvo tropical Anomalocardia brasiliana fue el molusco más conspícuo de las dos zonas, seguido por Cerithium atratum, Neritina virginea y Crassostrea sp. en la estación I y por Macoma constricta y N. virginea en la estación II. En los dos llanos, el descenso en riqueza específica y en abundancia hacia los niveles mareales superiores sugiere una fuerte relación entre la tolerancia relativa al estrés fisiológico en los organismos y en el grado de inmersión/emersión.Palabras clave: moluscos bentónicos, composición específica, distribución espacial, llanos intermareales, Anomalocardia brasiliana, Bahía de Paraguaná, Brasil.

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Section: Discussionmentioning

confidence: 99%

“…At St. II, where the salinity was lower and more fluctuating than at St. I (Boehs, 2000), those species reported as typically estuarine such as Thais mariae, Mytella charruana and Tagelus plebeius (Tommasi, 1970;Rios, 1994) were found to occur, whilst they were absent at the entrance to the bay (St. I).…”

Section: Discussionmentioning

confidence: 99%

Composition and distribution of benthic molluscs on intertidal flats of Paranaguá Bay (Paraná, Brazil)

Boehs¹,

Absher²,

Cruz-Kaled³

2004

Sci. Mar.

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“…Numerically dominant polychaete species from the estuarine systems along Marine Ecoregions of Brazil Fernandes (2003); Oliveira & Mochel (1999) M A N U S C R I P T A C C E P T E D ACCEPTED MANUSCRIPT Santos et al (1994) Barros et al (2008); Magalhães (2008);Magalhães et al (2011); Silva (2006b) Paixao et al (2010); Paixao et al (2011) Mendes (2011); Mendes & Soares-Gomes (2011); Attolini1 et al (1997);Flynn et al (1996);Flynn et al (1998);Tommasi (1970);Varoli (1988);Varoli (1990) …”

mentioning

confidence: 99%

Predicting ecological changes on benthic estuarine assemblages through decadal climate trends along Brazilian Marine Ecoregions

Bernardino

Netto

Pagliosa

et al. 2015

Estuarine, Coastal and Shelf Science

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“…The general benthic community pattern observed in the Trapandé Bay, in which highest densities and species numbers were recorded at the estuary mouth and decreased towards the inner areas, is recurrent in other estuaries from southern and southeastern Brazil, as shown in Cananeia (TOMMASI 1970), Paranaguá Bay (LANA 1986) and Patos Lagoon (BEMVENUTI & NETTO 1998). The temporal and spatial variation in faunal parameters clearly demonstrated the impact of environmental variations in either chemical composition or particle size on the distribution of the macrofauna.…”

Section: Discussionmentioning

confidence: 85%

The spatial distribution of the subtidal benthic macrofauna and its relationship with environmental factors using geostatistical tools: a case study in Trapandé Bay, southern Brazil

Souza¹,

Gilbert²,

Camargo³

et al. 2013

Zoologia (Curitiba)

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ABSTRACT. Modeling the distribution patterns of the estuarine macrobenthic community has revealed itself as a difficult task due to spatio-temporal heterogeneity. This study uses ordinary kriging and Poisson modeling to generate distribution maps of the subtidal benthic macrofauna in the Trapandé Bay (southeastern Brazil). Samples were taken in duplicate from 36 locations distributed along nine transects perpendicular to the main estuarine axis in October 2006 and March 2007. One-hundred and seventy taxa belonging to 12 phyla, were identified, with dominance of Annelida Polychaeta. Distribution maps were prepared to illustrate the total density, the number of species and the six most numerous taxa, as well as abiotic parameters. The general distribution pattern has revealed that the greatest number of species and the highest densities are at the estuary mouth, decreasing towards its inner areas. However the temporal and spatial changes observed at the estuary mouth have clearly shown the impact of environmental variations such as nutrients and freshwater input, attributed to increased rainfall in March. The increased flow in the Cananeia Sea, coming from the drainage basin, produces major changes in sediment and faunal composition. Ordinary kriging associated with Poisson modeling has proved to be a powerful and promising tool for modeling the macrofauna, despite the fact that it is not frequently used due to the scarcity of appropriate software.

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Observações sôbre a fauna bêntica do complexo estuarino-lagunar de Cananéia (SP)

Cited by 30 publications

References 8 publications

Composition and distribution of benthic molluscs on intertidal flats of Paranaguá Bay (Paraná, Brazil)

Composition and distribution of benthic molluscs on intertidal flats of Paranaguá Bay (Paraná, Brazil)

Predicting ecological changes on benthic estuarine assemblages through decadal climate trends along Brazilian Marine Ecoregions

The spatial distribution of the subtidal benthic macrofauna and its relationship with environmental factors using geostatistical tools: a case study in Trapandé Bay, southern Brazil

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