Ocupação espaço-temporal pelos macroinvertebrados bentônicos na bacia do rio Ribeirão, Paranaguá, PR (Brasil)
DOI:
https://doi.org/10.5380/abpr.v33i0.633Keywords:
ocupação espacial, rios-litorâneos, Chironomidae, Palaemonidae, spatial-distribution, coast stream, l'occupation-spacial, les-rivières-littoralesAbstract
O presente trabalho visou compreender a estrutura da comunidade de macroinvertebrados bentônicos da bacia do rio Ribeirão no município de Paranaguá (Pr), com coletas realizadas no período de outubro/2002 e fevereiro/2003 durante as estações de primavera e verão, respectivamente. Chironomidae mostrou-se predominante na maioria dos substratos amostrados, com exceção de Vegetação Marginal onde Palaemonidae foi dominante. A ocorrência de fortes chuvas no período da coleta de verão levou a um aumento da diversidade devido a quebra de dominância dos grupos majoritários.
ABSTRACT
To understand the structure of the community of benthonic macroinvertebrates of the basin of the Ribeirão river in the city of Paranaguá (PR). The samplings were carried through from October/2002 to February/2003, during the Spring and Summer, respectively. Chironomidae predominante in the majority of substrata, except in the Marginal Vegetation, where Palaemonidae predominates. The occurrence of strong rains in the period of the Summer collection possibly contributed to the increase of the diversity due the decrease of the dominance in the majority of groups in the samples collected in the period from October/ 2002 to February/2003.
RÉSUMÉ
Le présent travail visait etablar la structure de la population de macroinvértebré bentoniques de la bassin du riviere Ribeirão dans les ville de Paranaguá (PR), avec collectes ayant eté realisé dans les période de octobre de 2002 et fevrier de 2003 au cours des la saison de la printemps et été respetivement. Chironomidae montrait predominante dans les majorité des types ayant été echantillonné, avec la exception de la végétation marginal, où Palaemonidae etait dominant. Locurrance de fort pluie dans le période de la collecte dété portait lune elévation de la diversité dû la casse de la predominance des groupes majoritaires.
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