Alimentação de peixes na microbacia do Ribeirão Grande, Serra da Mantiqueira oriental, SP

Braga, Francisco Manoel de Souza; Gomiero, Leandro Muller

doi:10.1590/s1676-06032009000300021

Cited by 27 publications

(32 citation statements)

References 25 publications

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“…However, autochthonous resources dominated the diet of most species. This was also observed in studies performed by GOMIERO (2009) andRONDINELI et al (2011). The low contribution of allochthonous items can be explained by the disruption of riparian vegetation in the studied areas.…”

Section: Discussionsupporting

confidence: 83%

Diet and trophic guilds of fish assemblages in two streams with different anthropic impacts in the northwest of Paraná, Brazil

Bonato¹,

Delariva²,

Silva³

2012

Zoologia (Curitiba)

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Section: Discussionsupporting

confidence: 83%

Diet and trophic guilds of fish assemblages in two streams with different anthropic impacts in the northwest of Paraná, Brazil

Bonato¹,

Delariva²,

Silva³

2012

Zoologia (Curitiba)

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“…These characteristics were determined for each species from the literature on the regional fish fauna (Casatti and Castro 1998;Luiz et al 1998;Casatti et al 2001;Gibran et al 2001;Castro et al 2004;Gerhard 2005;Oliveira and Bennemann 2005;Ferreira 2007; Gomiero and Braga 2007;Esteves et al 2008;Braga and Gomiero 2009;Rolla et al 2009;Costa and Schulz 2010;Esteves and Alexandre 2011;Rondineli et al 2011). When information was not available for a given species, the characteristics of the genus or family were considered.…”

Section: Ibi Developmentmentioning

confidence: 99%

A Fish-Based Index of Biotic Integrity for the Assessment of Streams Located in a Sugarcane-Dominated Landscape in Southeastern Brazil

Santos

Esteves

2015

Environmental Management

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A multimetric, fish-based Index of Biotic Integrity (IBI) was developed and tested to assess the ecological status of streams with different riparian conditions in the Piracicaba River Basin. Nine streams with three categories of riparian zone preservation were selected: native forest (NF) with preserved forest, secondary forest (SF) with forest in an advanced state of regeneration and surrounded by sugarcane plantations, and sugarcane (SC) without riparian vegetation and surrounded by SC crops. A continuous scoring system was employed, and candidate metrics were tested for range, responsiveness, and redundancy, resulting in the selection of eight metrics to compose the index. The final IBI score was positively correlated with an Environmental Index both in the dry (Spearman's rho = 0.76; P = 0.01) and rainy seasons (Spearman's rho = 0.66; P = 0.04), suggesting that this IBI is a suitable tool for the assessment of the biological conditions of these streams. The highest IBI values were observed in the rainy season at the NF and SF sites, with significant differences between the NF and SC sites (Kruskal-Wallis test: P = 0.03). The results indicated some variability in the biological integrity at SF and SC sites, suggesting a relationship with the intensity of the management of this crop. Patterns were consistent with other studies that have shown the effects of agriculture on the environmental quality of streams, which indicate the importance of the riparian zone to the maintenance of ecosystem integrity and supports the use of the IBI for biological monitoring in similar regions.

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“…Characidium zebra, an invertivorous, stealth predator species, showed the same afore mentioned pattern. These species, among other from Heptapteridae (Pagotto et al, 2011), Trichomycteridae (Uieda & Pinto, 2011) and Crenuchidae families (Braga & Gomiero, 2009) might be considered specialized, once they are strongly subordinated to specific niches availability in the system. Thereby, changes in environmental conditions that alter specific niches may deeply affect those species (Villéger et al, 2010), as observed for the simplified reach.…”

Section: Discussionmentioning

confidence: 99%

Trophic organization and fish assemblage structure as disturbance indicators in headwater streams of lower Sorocaba River basin, Sao Paulo, Brazil

2013

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Studies that investigate the relationship patterns between environmental structure complexity and fish fauna provide crucial information to stream restoration efforts. In order to test the hypothesis that streams with more complex environmental structure sustain more diverse and functionally more complex fish communities we sampled fish fauna from Sorocaba River headwater stream reaches (SE -Brazil). Reaches represented two distinct treatments: (1) a simplified reach, characterized by unstable fine substrate, clay, deeper channel and higher water velocity and (2) structurally complex reaches, characterized by coarse substrate, with gravel, pebble, rock, stems and branches and leaves inside the channel, producing a diverse pattern of microhabitat, associated with sequences of pools, runs, and riffles. Both trophic structure and taxonomic composition varied significantly between treatments. Invertivorous trophic group exclusively occurred in structurally complex reaches, which also presented greater diversity and species richness. We suggest enhancing in-stream environmental structure that suffered simplification processes due to human impacts in order to reestablish fish communities and ecossistemic functioning.Estudos que buscam investigar os padrões de relação entre a complexidade da estrutura ambiental e a fauna de peixes fornecem informações cruciais para os esforços de restauração de riachos. Para testar a hipótese de que riachos com estrutura ambiental mais complexa sustentam comunidades ícticas mais diversas do ponto de vista taxonômico e funcional, a ictiofauna de trechos de riachos de cabeceira do rio Sorocaba (SE -Brasil) foi amostrada, representando dois tratamentos distintos: (1) um trecho de riacho simplificado, caracterizado por substrato fino e inconsolidado, composto por areia e silte, curso d'água mais profundo, com maior velocidade e poucos elementos diversificadores da estrutura de habitat e (2) trechos de riacho estruturalmente complexos, com substrato de fundo composto por elementos irregulares como cascalho, rochas, seixos, troncos, galhos e restos de madeira, produzindo um padrão diverso de microhabitats, associados à sequências de poços, corredeiras e trechos rápidos. Tanto a estrutura trófica quanto a composição taxonômica foram distintas em relação aos dois tipos de riachos. O grupo trófico dos invertívoros ocorreu somente nos trechos estruturalmente mais complexos, que apresentaram também maior diversidade e riqueza de espécies. Sugere-se incrementar a estrutura ambiental de riachos que sofreram simplificação ambiental, devido à ação humana, a fim de promover a reestruturação da comunidade íctica e o funcionamento ecossistêmico.

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Alimentação de peixes na microbacia do Ribeirão Grande, Serra da Mantiqueira oriental, SP

Cited by 27 publications

References 25 publications

Diet and trophic guilds of fish assemblages in two streams with different anthropic impacts in the northwest of Paraná, Brazil

Diet and trophic guilds of fish assemblages in two streams with different anthropic impacts in the northwest of Paraná, Brazil

A Fish-Based Index of Biotic Integrity for the Assessment of Streams Located in a Sugarcane-Dominated Landscape in Southeastern Brazil

Trophic organization and fish assemblage structure as disturbance indicators in headwater streams of lower Sorocaba River basin, Sao Paulo, Brazil

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