Fish assemblages in Atlantic Forest streams: the relative influence of local and catchment environments on taxonomic and functional species

2015 ◽  
Vol 25 (4) ◽  
pp. 527-544 ◽  
Author(s):  
Bianca de F. Terra ◽  
Robert M. Hughes ◽  
Francisco G. Araújo
2019 ◽  
Vol 17 (1) ◽  
Author(s):  
Katharina Eichbaum Esteves ◽  
Marcelo Horikoshi Candido Silva ◽  
Maressa Helena Nanini-Costa ◽  
Maria Letizia Petesse

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 and fish community indexes showed similar patterns of community structure among mesohabitats. Nevertheless, fish biomass, diversity and richness were associated with such unique environmental features as low shading and shallow habitats. The observed dispersion among mesohabitats suggests that these communities are subject to some level of disturbance, which may affect the value of patches as refugia. Thus, the sharing of these mesohabitat patches among species may represent an opportunistic strategy to maximize the use of available resources for these low density populations living in these unique environments.


2019 ◽  
Vol 44 (8) ◽  
pp. 1311-1321
Author(s):  
Maria Aparecida Cristo Anciutti ◽  
Veluma Ialú Molinari De Bastiani ◽  
Jacir Dal Magro ◽  
Fabio Luiz Carasek ◽  
Ronei Baldissera ◽  
...  

2019 ◽  
Vol 32 (3) ◽  
pp. 119-134
Author(s):  
Riccardo Mugnai ◽  
Arlindo Serpa-Filho ◽  
Jorge Luiz Nessimian ◽  
Adriano Brilhante Kury ◽  
Silvia Vendruscolo Milesi

2016 ◽  
Vol 81 (5) ◽  
pp. 480-487 ◽  
Author(s):  
Melina de Souza Leite ◽  
Maron Galliez ◽  
Thiago Lopes Queiroz ◽  
Fernando A.S. Fernandez

2020 ◽  
Vol 18 (4) ◽  
pp. 277-282
Author(s):  
Monalisa Silva-Araújo ◽  
Eduardo F. Silva-Junior ◽  
Vinicius Neres-Lima ◽  
Rafael Feijó-Lima ◽  
Flavia Tromboni ◽  
...  

2012 ◽  
Vol 10 (3) ◽  
pp. 675-684 ◽  
Author(s):  
Cristina da Silva Gonçalves ◽  
Francisco Manoel de Souza Braga

The lack of knowledge of the freshwater ichthyofauna of coastal streams in the State of São Paulo (Brazil) is a cause of concern, as these streams are inserted in the Atlantic forest, a hotspot highly threatened. The aim of the present study is to investigate the freshwater ichthyofauna composition of clear and blackwater streams in a preservation area of Brazilian Atlantic forest. Fish samples were taken using electrofishing. A total of 20 species were registered, with Astyanax ribeirae, Hollandichthys multifasciatus, and Mimagoniates microlepis (Characiformes, Characidae) as the more representative. In general, the observed pattern of occurrence and distribution of fish species varied according to habitat characteristics, due to the longitudinal gradient in clearwaters, and among clearwaters and blackwaters. In clearwater streams, the headwater stretches had lower species diversity, while the opposite occurred in the middle and lower sites. These longitudinal variations of ichthyofauna were related with habitat characteristics (depth, stream flow, and bottom type) in which they were found, since the diversity of habitats was higher in headwaters and lower in downstream reaches (middle and lower sites). The physical and chemical variables of water do not seem to have influenced the distribution of species in clearwater streams, but the clear and blackwater fish composition was influenced mainly by pH concentration. Unlike the spatial differences, significant temporal differences were not registered in fish assemblages, probably due to the absence of a pronounced dry season in the studied region.


Hydrobiologia ◽  
2006 ◽  
Vol 575 (1) ◽  
pp. 83-94 ◽  
Author(s):  
Darcilio F. Baptista ◽  
Daniel F. Buss ◽  
Mariana Egler ◽  
Alexandre Giovanelli ◽  
Mariana P. Silveira ◽  
...  

2020 ◽  
Author(s):  
Eva C. McClure ◽  
Andrew S. Hoey ◽  
Katherine T. Sievers ◽  
Rene A. Abesamis ◽  
Garry R. Russ

2020 ◽  
Vol 117 ◽  
pp. 106534
Author(s):  
Thamyrys B. Souza ◽  
Filipe M. França ◽  
Jos Barlow ◽  
Pavel Dodonov ◽  
Juliana S. Santos ◽  
...  

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