Macroinfauna of Six Beaches near Guaratuba Bay, Southern Brazil

Barros, Francisco; Borzone, Carlos Alberto; Rosso, Sérgio

doi:10.1590/s1516-89132001000400005

Cited by 44 publications

(48 citation statements)

References 28 publications

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“…Euzonus furciferus were not found in typical reflective beaches with coarse sand of the Paraná littoral (BORZONE et al 1996, BARROS et al 2001. Densities in Atami Beach were similar to those found by GIANUCA (1987) for a population at the dissipative beach of Cassino, in Rio Grande do Sul (South Brazil), with an annual mean of 425 ind.…”

Section: Discussionsupporting

confidence: 62%

Population dynamics and secondary production of Euzonus furciferus Ehlers (Polychaeta, Opheliidae) in an exposed sandy beach of Southern Brazil

Souza

Borzone

2007

Rev. Bras. Zool.

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The distribution, population dynamics and secondary production of the polychaete Euzonus furciferus was studied in Atami Beach (Southern Brazil), from February 1992 to March 1993. Euzonus furciferus Ehlers, 1897 is the only deposit feeder species of the upper intertidal region. The organisms were present in the sandy beach all over the year, concentrated in a narrow band, and reaching maximal densities of 3,029 individuals m-2. Peaks of abundance occurred in September 1992, with a mean of 681.8 individuals m-2. Recruitment occurred in winter, with a peak in July. Mean annual biomass was estimated in 0.218 gAFDW m-2, with a total annual production of 0.466 gAFDW m-2 y-1, giving a P/B ratio of 2.13 y-1. Similar values were found for a filter-feeder polychaete inhabiting the same beach, suggesting that general food disposability of each particular environment is more important for production than the trophic strategic employed by those organisms exploring this environment.

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Section: Discussionsupporting

confidence: 62%

Population dynamics and secondary production of Euzonus furciferus Ehlers (Polychaeta, Opheliidae) in an exposed sandy beach of Southern Brazil

Souza

Borzone

2007

Rev. Bras. Zool.

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“…In fact, this site is shallower than the other studied sites, and it is located close to the surf zone of the largest sandy beach in the inlet and therefore is subjected a priori to a greater hydrodynamism. Sediments of the surf zone are usually environments of great hydrodynamic energy (Barros et al 2001) which translates in frequent changes in sedimentary composition and an exacerbated physical stress for the benthic fauna. In addition, hydrodynamic events associated with winter storms also affect the infauna by removing, mobilizing or burying established populations in any given area (Dobbs and Mozarik 1983;Probert 1984;Reiss and Kröncke 2005) and resuspending potential sources of food such as carrion (Chatzinikolaou and Richardson 2008); this may also lead to the disappearance of most of the macrofauna in such conditions (Carpentier et al 1997).…”

Section: Discussionmentioning

confidence: 99%

Temporal dynamics of gastropod fauna on subtidal sandy sediments of the Ensenada de Baiona (NW Iberian Peninsula)

2010

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The temporal variation of the gastropod fauna inhabiting sandy sediments of the Ensenada de Baiona (Galicia, Spain) was studied at three subtidal sites from February 1996 to February 1997 by means of quantitative sampling. A total of 5,463 individuals representing 51 gastropod species and 22 families were found. The family Pyramidellidae was the most diverse in number of species (11 species), followed by Rissoidae and Trochidae (4 species each). The dogwhelk, Nassarius reticulatus, and the rissoid snail, Rissoa parva, were the numerically dominant species at the three studied sites; those and other abundant species showed their greatest densities by the end of summer and the beginning of autumn. In general, univariate measures of the assemblage (number of species, abundance, diversity and evenness) showed variations through time; greater values were recorded between summer and autumn depending on the site. Multivariate analyses done on abundance data showed certain seasonality in the evolution of the assemblage as expected for shallow subtidal sandy sediments at temperate latitudes; those seasonal changes were mostly related to variations in abundance of numerically dominant species. Although the measured sedimentary variables did not show significant correlations with faunal univariate parameters, sediment heterogeneity due to the presence of mats of Zostera marina L. and shells of dead bivalves might explain the differences in composition of the gastropod assemblage among sampling sites.

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“…1 m above astronomical tides (Carvalho et al 1996;Schettini et al 1999). Most beaches are exposed and dominated by waves due to NS orientation of the coastline and NE-SW waves system or winds prevailing in the region (Klein and Menezes 2001;Barros et al 2001). Four predominant sea states were identified in the region: (1) sea winds from east-northeast (ENE), predominant throughout the year; (2) sea winds from south-southeast (SSE) (3) southwest and (4) east swells.…”

Section: Sampled Localitiesmentioning

confidence: 99%

Protodrilus (Protodrilidae, Annelida) from the southern and southeastern Brazilian coasts

et al. 2013

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Protodrilus corderoi, Protodrilus ovarium n. sp. and Protodrilus pythonius n. sp. are reported from beaches in southern and southeastern Brazil and described combining live observations with light and electron scanning microscopy studies. Protodrilus corderoi is redescribed from new collections at the type locality, and a neotype for the species is assigned since the original type material no longer exists. New information on reproductive organs, segmental adhesive glands and unpigmented ciliary receptors as well as morphometrics is provided. Protodrilus ovarium n. sp. and P. pythonius n. sp. are formally described. Protodrilus ovarium n. sp. is diagnosed by the presence of separated lateral organs on segments 7-12, three spermioducts of segments 10-12 and salivary glands in segments 1-9. Protodrilus pythonius n. sp. is defined by the presence of separated lateral organs on segments 7-16, long pygidial lobes and body tapering toward the pygidium. The distribution of the different species in more or less spacious habitats seems to be correlated with their gross morphology. Protodrilus pythonius n. sp., with relatively long and wide body and long palps with ciliary bands, was collected in very coarse sandy sediments at a reflective sheltered beach. Conversely, P. corderoi and P. ovarium n. sp., both possessing more slender bodies with shorter, less ciliated palps, occurred in medium-coarse, well-sorted sediments in the more energetic swash zone of exposed intermediate-reflective beaches. The finding of P. pythonius and P. corderoi in nearby beaches corroborates other studies showing a higher morphological variability among species in different habitats within the same geographical area than among species in the same habitat in different geographical areas.

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Macroinfauna of Six Beaches near Guaratuba Bay, Southern Brazil

Abstract: ABSTRACT

Cited by 44 publications

References 28 publications

Population dynamics and secondary production of Euzonus furciferus Ehlers (Polychaeta, Opheliidae) in an exposed sandy beach of Southern Brazil

Population dynamics and secondary production of Euzonus furciferus Ehlers (Polychaeta, Opheliidae) in an exposed sandy beach of Southern Brazil

Temporal dynamics of gastropod fauna on subtidal sandy sediments of the Ensenada de Baiona (NW Iberian Peninsula)

Protodrilus (Protodrilidae, Annelida) from the southern and southeastern Brazilian coasts

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