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Braz. j. biol ; 62(4a): 735-742, Nov. 2002. mapas, tab, graf
Artículo en Inglés | LILACS | ID: lil-335630

RESUMEN

The monthly fluctuations of amphipods associated to the algae Bryocladia trysigera was described from March 1997 to February 1998 at the rocky shore known as Poço de Anchieta in the Peruíbe Beach, Itanhaém, Southeastern Brazil. A total of 75,344 individuals were sampled, belonging to 10 species and 9 families. Three species dominated the phytal in number: Hyale nigra, Caprella danileviskii and Caprella penantis. Despite the alternation in dominance of the 3 most abundant species, the amphipod species composition remained generally unchanged, so that the majority of the species were observed in all sampling months. The temporally changing pattern of the community structure, with a decline in amphipod abundance in winter followed by an increase in spring, was probably due to a higher predation pressure in winter period


Asunto(s)
Animales , Anfípodos/clasificación , Ecosistema , Eucariontes , Densidad de Población , Estaciones del Año , Anfípodos/fisiología , Brasil
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