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(Reference retrieved automatically from SciELO through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Stream fish, water and habitat quality in a pasture dominated basin, southeastern Brazil

Full text
Author(s):
L. Casatti [1] ; F. Langeani [2] ; A. M. Silva [3] ; R. M. C. Castro [4]
Total Authors: 4
Affiliation:
[1] Universidade Estadual Paulista. Departamento de Zoologia e Botânica. Laboratório de Ictiologia - Brasil
[2] Universidade Estadual Paulista. Departamento de Zoologia e Botânica. Laboratório de Ictiologia - Brasil
[3] Universidade Estadual Paulista. Departamento de Engenharia Ambiental - Brasil
[4] Universidade de São Paulo. FFCLRP. Departamento de Biologia - Brasil
Total Affiliations: 4
Document type: Journal article
Source: Brazilian Journal of Biology; v. 66, p. 681-696, 2006-05-00.
Field of knowledge: Biological Sciences - Zoology
Abstract

A fish survey in 35 stream reaches (from 1st to 3rd order) with physicochemical and habitat assessment in the São José dos Dourados system, southeastern Brazil, was conducted. Most of the basin land cover (77.4%) is used for pasture. From the sampled stream reaches, 24 were of good physicochemical quality, 10 of fair quality, and only one of poor quality. A habitat assessment showed that 10 stream reaches were considered fair, 22 were poor, and 3 were very poor. Fifty species were collected and their abundances showed strong correlation with habitat descriptors. In addition to the correlation between fish abundance and habitat, some species also showed optimal distribution related to the degree of physical habitat conservation. Streams located in this region experience organic pollution, but the most important aspect is the decline of the instream physical habitat condition, especially in first order streams, which negatively affects coarse substrates and water column dependent fish species. Effluent control, riparian vegetation restoration programs, siltation control and adequate sustainable soil use are practices which could mitigate such impacts. (AU)

FAPESP's process: 99/05279-4 - Structure and Functioning of Meso and Micro-Scale Watersheds of the São Paulo State: Basis to Generate and Sustain Biodiversity
Grantee:Luiz Antonio Martinelli
Support type: BIOTA-FAPESP Program - Thematic Grants
FAPESP's process: 00/12939-0 - Mapping of the cover and soil use in the hydrographic basins of the Alto Paranapanema Aguapeí, Peixe/Santo Anastácio and São José dos Dourados, based on satellite images
Grantee:Alexandre Marco da Silva
Support type: Scholarships in Brazil - Post-Doctorate
FAPESP's process: 99/05193-2 - Consolidation of the infrastructure and computerization of the fish collection in the Department of Zoology IBILCE-UNESP, São José do Rio Preto, SP
Grantee:Francisco Langeani Neto
Support type: BIOTA-FAPESP Program - Regular Research Grants
FAPESP's process: 00/01919-8 - Biology and structure of three communities of fish from the Sete de Setembro tributary, Morro do Diabo State Park, Alto Rio Paraná Basin, SP
Grantee:Lilian Casatti
Support type: Scholarships in Brazil - Post-Doctorate
FAPESP's process: 01/13340-7 - Evaluation of the biotic integrity of the rivers of the northwest region of the State of São Paulo, Alto Paraná basin, using communities of fish
Grantee:Lilian Casatti
Support type: BIOTA-FAPESP Program - Young Investigators Grants
FAPESP's process: 98/05072-8 - Fish diversity of the headwaters and streams of the Upper Paraná River System in the State of São Paulo, Brazil
Grantee:Ricardo Macedo Corrêa e Castro
Support type: BIOTA-FAPESP Program - Thematic Grants
FAPESP's process: 03/12893-8 - Food of Knodus moenkhausii (Pisces, Ostariophysi, Characidae), an allochtonous species in streams of the northwest of the State of São Paulo
Grantee:Mônica Ceneviva Bastos
Support type: Scholarships in Brazil - Scientific Initiation