Estrutura Da Macrofauna Bentônica No Supra, Meso E Infralitoral De Uma Praia Arenosa Do Sul Do Brasil

Borzone, Carlos Alberto; Souza, José Roberto Botêlho de

doi:10.4257/oeco.1997.0301.13

Cited by 23 publications

(27 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Species richness at intertidal stations 1 and 10 was higher than that found in other studies of Brazilian tropical estuarine systems (Corbisier, 1991), including that of the sandy-beach intertidal areas Reis et al, 2000;Denadai et al, 2001). Outer stations, both intertidally and subtidally, had a higher richness than other subtropical Brazilian soft-bottom communities (Borzone & Souza, 1997) and much higher than those of subtropical Atlantic estuaries Capitoli et al, 1978;Ieno & Bastida, 1998;Muniz & Venturini, 2001).…”

Section: Discussioncontrasting

confidence: 43%

Soft-Bottom macrobenthic communities of the Vitória Bay estuarine system, South-eastern Brazil

et al. 2005

View full text Add to dashboard Cite

The present work describes and analyses the structure of the macrobenthic epi- and infaunal assemblage of the estuarine system of Vitória Bay, South-eastern Brazil, from January 1998 to June 1999. Replicated sampling at intertidal and subtidal levels was conducted quarterly at ten stations. Intertidal and subtidal sediment composition was characterised. Water physico-chemical parameters were measured in situ. A total of 10,695 individuals, belonging to 144 taxa, were collected. Molluscs, crustaceans and polychaetes were the most abundant groups. The bivalves Anomalocardia brasiliana, Mytella guyanensis and M. falcata were the most abundant species. Locally, significant discharges of residential and industrial wastewater resulted in high organic content in the sediment (up to 30%) and low dissolved oxygen concentration in the water (< 1mg.l-1). Near the two entrances of the bay, high hydrodynamic activity and coarse sand reduced the detrimental effects of raw and treated sewage inputs. Species richness (S), diversity (H') and total abundance (A) decreased from outer-bay stations (22 < S < 72; 1.99 < H' < 2.85; 320 < A < 1737) towards inner-bay stations (2 < S < 45; 0.59 < H' < 2.67; 2 < A < 1317), where salinity and dissolved oxygen were lowest and organic matter content highest.
O presente trabalho analisa e descreve a estrutura das associações faunísticas macrobênticas (epifauna e infauna) do sistema estuarino da Baía de Vitória, sudeste do Brasil, de Janeiro de 1998 a Junho de 1999. Amostras replicadas em níveis de entre-marés e sublitoral foram coletadas em intervalos de três meses em dez estações. Foram caracterizadas as composições dos sedimentos de entre-marés e sublitoral. Os parâmetros físico-químicos da água foram medidos in situ. Foram coletados 10.695 indivíduos, compreendendo a 144 taxa. Os grupos mais abundantes foram moluscos, crustáceos e poliquetos. As espécies mais abundantes foram os bivalves Anomalocardia brasiliana, Mytella guyanensis e M. falcata. Localmente, descargas significativas de esgoto doméstico causaram um aumento da quantidade de matéria orgânica no sedimento (até 30%) e baixa concentração de oxigênio dissolvido na água (< 1mg.l-1). Próximo às duas entradas da baía, o alto hidrodinamismo e a presença de areia grossa reduziram os efeitos deletérios dos aportes de esgotos. A riqueza (S), a diversidade (H') de espécies e a abundância total (A), decresceram das estações externas do estuário (22 < S < 72; 1.99 < H' < 2.85; 320 < A < 1737) em direção às estações internas (2 < S < 45; 0.59 < H' < 2.67; 2 < A < 1317), onde a salinidade e oxigênio dissolvido foram menores e as quantidades de matéria orgânica maiores

show abstract

Section: Discussioncontrasting

confidence: 43%

Soft-Bottom macrobenthic communities of the Vitória Bay estuarine system, South-eastern Brazil

et al. 2005

View full text Add to dashboard Cite

show abstract

“…By contrast, in winter, this species was present in both sectors. The disappearance of B. bonariensis may be associated with the cleaning process, which consists of the removal of garbage along with the natural debris deposited by the tide on the upper beach, typically inhabited by beetle species belonging to the genus Bledius (BORZONE; SOUZA, 1997;VELOSO et al, 1997;SCHREINER;OZORIO, 2003). The removal of debris in the urbanized sector has resulted in an unfavorable environment for this species' survival, with adults migrating elsewhere in search of food resources, since adult beetles are generally able to fly and thus quickly to establish new populations along the coast (LLEWELLYN; SHACKLEY, 1996).…”

Section: Discussionmentioning

confidence: 99%

“…Most studies conducted on sandy beaches seek to associate spatial and temporal variations that occur in the macrobenthic communities and populations with environmental parameters and/or biological processes (BORZONE et al, 1996;SOUZA, 1997;SOUZA;BORZONE, 2000;BARROS et al, 2001;SOUZA;BORZONE, 2007;ALVES;PEZZUTO, 2009). Few studies aim to assess the consequences of human disturbances on population processes and community structure on sandy beaches (LERCARI; DEFEO, 2003).…”

Section: Introductionmentioning

confidence: 99%

Human impact on the benthic macrofauna of two beach environments with different morphodynamic characteristics in southern Brazil

et al. 2012

View full text Add to dashboard Cite

A B S T R A C TPollution, exploitation of resources, erosion and recreational activities produce the most common impacts that somehow alter the natural balance of beach ecosystems. The aim of this study was to compare the richness and abundance of the benthic macrofauna of two sectors, one non-urbanized and the other urbanized, on each of two morphodynamically different beaches. Sectors of each beach were analyzed taking into account morphodynamic, anthropogenic (recreational activities) and ecological aspects. Morphodynamically, one of the beaches presented sediment formed of fine sand with a gentle slope and morphodynamism with dissipative characteristics. The other was of sediment formed of medium sand with a steep profile and of intermediate to reflective morphodynamic characteristics. On both beaches during the summer, the urbanized sector was frequented by a greater number of users than the non-urbanized sector. On the beach with dissipative morphodynamism, negative relationships were observed between user abundance and the species Bledius bonariensis, Donax hanleyanus, Thoracophelia furcifera, Excirolana armata, Phoxocephalopsis sp. and Tholozodium rhombofrontalis. On the beach with intermediate to reflective morphodynamics, low abundances of Atlantorchestoidea brasiliensis and Excirolana braziliensis were recorded in the urbanized sector. Thus the results of this study suggest the use of certain species as indicators of human impacts on beach ecosystems. R E S U M OPoluição, exploração de recursos, erosão e atividades recreativas são os impactos mais comuns que de alguma forma alteram o equilíbrio natural do ecossistema praial. O objetivo deste trabalho foi comparar a riqueza e a abundância da macrofauna bentônica entre um setor não urbanizado e outro urbanizado de duas praias morfodinamicamente distintas. Os setores de cada praia foram analisados levando em consideração aspectos morfodinâmicos, antrópicos (atividades recreativas) e ecológicos. Morfodinamicamente, uma das praias apresentou sedimentos formados por areia fina, suave inclinação e morfodinamismo com características dissipativas. A outra praia apresentou sedimentos formados por areia média, perfil íngreme e características morfodinâmicas entre intermediárias a refletivas. Em ambas as praias, durante o verão, o setor urbanizado apresentou maior abundância de usuários do que o setor não urbanizado. Na praia com morfodinamismo dissipativo, relações negativas foram observadas entre a abundância de usuários e a dos organismos Bledius bonariensis, Donax hanleyanus, Thoracophelia furcifera, Excirolana armata, Phoxocephalopsis sp. e Tholozodium rhombofrontalis. Já na praia com morfodinamismo intermediário a refletivo, foram registradas baixas abundâncias de Atlantorchestoidea brasiliensis e Excirolana braziliensis no setor urbanizado. Assim, os resultados do presente estudo sugerem a utilização de algumas espécies como indicadores de impactos antrópicos nos ecossistemas praiais.

show abstract

“…Beach slope, surf water salinity and temperature and wave height and period were measured each month. Modal morphodynamic states were computed employing the dimensionless fall velocity parameter, according with MASSELINK & SHORT 1993(BORZONE & SOUZA 1997.…”

Section: Methodsmentioning

confidence: 99%

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.

View full text Add to dashboard Cite

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.

show abstract

Estrutura Da Macrofauna Bentônica No Supra, Meso E Infralitoral De Uma Praia Arenosa Do Sul Do Brasil

Cited by 23 publications

References 0 publications

Soft-Bottom macrobenthic communities of the Vitória Bay estuarine system, South-eastern Brazil

Soft-Bottom macrobenthic communities of the Vitória Bay estuarine system, South-eastern Brazil

Human impact on the benthic macrofauna of two beach environments with different morphodynamic characteristics in southern Brazil

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

Contact Info

Product

Resources

About