Benthic fauna living on Spartina alterniflora of Cananéia estuarine region (25º02'S - 47º56'W)

Abstract

The fauna of Spartina alterniflora from upper and lower shore levels has been monthly studied, from August 1981 to July 1982, in the Cananeia estuarine region, southern coast of São Paulo State, Brazil (25º02'S - 47º56'W). Biological samples were obtained by quadrats from two transects parallel to the water level. The mean density for the upper transect was 3,230 ind/m² and 2,403 ind/m² for the lower transect. Isopoda was the dominant group at both belts, Polychaeta was present consistently at lower transect and Gastropoda was at upper one. Monthly fluctuations of densities of several groups was related to plant biomass.

Zoobenthos; Spartina alterniflora; Density; Biomass; Estuaries; Cananéia: SP; Brazil

ARTIGOS

Benthic fauna living on Spartina alterniflora of Cananéia estuarine region (25º02'S - 47º56'W)

Airton Santo Tararam; Yoko Wakabara

Instituto Oceanográfico da Universidade de São Paulo (Caixa Postal 9075, 01051 São Paulo, SP)

ABSTRACT

The fauna of Spartina alterniflora from upper and lower shore levels has been monthly studied, from August 1981 to July 1982, in the Cananeia estuarine region, southern coast of São Paulo State, Brazil (25º02'S - 47º56'W). Biological samples were obtained by quadrats from two transects parallel to the water level. The mean density for the upper transect was 3,230 ind/m² and 2,403 ind/m² for the lower transect. Isopoda was the dominant group at both belts, Polychaeta was present consistently at lower transect and Gastropoda was at upper one. Monthly fluctuations of densities of several groups was related to plant biomass.

Descriptors: Zoobenthos, Spartina alterniflora, Density, Biomass, Estuaries, Cananéia: SP, Brazil.

Descritores: Zoobentos, Spartina alterniflora, Densidade, Biomassa, Estuários, Cananéia: SP, Brasil.

Full text available only in PDF format.

Texto completo disponível apenas em PDF.

Acknowledgements

Thanks are due to the staff of the Oceanographic Institute Marine Station at Cananeia for their friendly and dedicated field assistance, without which this study would not have been possible; to Lic. Aloisio Rebelo Rocha and Mr. Zairo de Freitas Pinto for the drawings. The authors also thank Dr. N. Yamaguti for his assistance in the correlation analysis and Ms. M. C. A. Catunda for help in the preparation of the English manuscript. We are especially grateful to Dr. P. G. Moore (Marine Biological Station of Millport, Scotland) for the critical reading of the manuscript and for his helpful suggestions.

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(Received 30-Oct-87; accepted 14-Dec-87)

Publication Dates

• Publication in this collection
  24 May 2012
• Date of issue
  1987

History

• Received
  30 Oct 1987
• Accepted
  14 Dec 1987