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Esteves,Katharina Eichbaum; Silva,Marcelo Horikoshi Candido; Nanini-Costa,Maressa Helena; Petesse,Maria Letizia. |
ABSTRACT This study aimed to determine whether fish species occupy different mesohabitats, as defined by specific criteria of substrate types in Atlantic Forest blackwater streams. We sampled fourteen coastal blackwater rivers along the coast of São Paulo State, Brazil, during the low-flow season (June-September/2016). For each stream, we selected three mesohabitat types (sand, leaf-litter and trunks) in a 100 m river stretch. We sampled 41 mesohabitats, 31 of which contained fish, resulting in 15 species. When multivariate analysis of variance (MANOVA) was applied to the mesohabitat abiotic variables, no significant differences were indicated between them. ANOSIM for species density and biomass and Redundancy Analyses (RDAs) for species density, biomass... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Community structure; Leaf-litter; Mesohabitat; Spatial distribution; Substrate types. |
Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252019000100212 |
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Campolim,Marcos Bührer; Henriques,Marcelo Barbosa; Petesse,Maria Letizia; Rezende,Karina Fernandes Oliveira; Barbieri,Edison. |
Abstract: The objective of this work was to verify the existence of bioaccumulation in mussels of the species Perna perna, by determining the concentration of metal trace elements, in Urubuqueçaba Island, Santos Bay, Santos, SP, Brazil. Mussels were collected in natural banks and rocky shores, and sampling took place from April 2010 to June 2011. The concentration of the trace metal elements - aluminum, cadmium, cromium, copper, iron, manganese, nickel, lead, and zinc - was determined according to mussel sex, length, and seasonality classes, in a flame atomic absorption spectrometer. Statistical analyses were applied to the results with the use of the software PAST, with parametric and nonparametric approaches, at 5% probability. In the summer, mussels... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Perna perna; Bivalve mollusks; Bioaccumulation; Seasonality. |
Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2017001201131 |
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