Results 11 to 20 of about 119 (50)

GEOINDICADORES COMO FERRAMENTA PARA ANÁLISE DOS PROCESSOS ANTROPOGEOMORFOLÓGICOS NA MICROBACIA DO RIO TRACAJÁ, AMAZÔNIA, BRASIL [PDF]

open access: yes, 2022
It is necessary to know the characteristics of the landscape to identify the potential and vulnerability of the ecosystem, and based on this information, plan and manage the environment in order to conserve natural resources and promote sustainable ...
Cavalheiro, Wanderson Cleiton Schmidt   +9 more
core   +2 more sources

Contrasting fish size distributions between Neotropical run-of-river and storage reservoirs [PDF]

open access: yes, 2018
The spectrum size has been used to assess environmental disturbances and to understanding the energy flow in ecosystems. The objective of this work was to investigate if the operation regimes of reservoirs, including run-of-river and storage systems ...
Gomes, Louise Cristina   +2 more
core   +2 more sources

CARACTERÍSTICAS HIDROGEOMORFOMÉTRICAS E DINÂMICA DA COBERTURA DO SOLO NA MICROBACIA DO RIO CONFINAMENTO, RONDÔNIA, BRASIL [PDF]

open access: yes, 2022
Planning for the sustainable use of natural resources is based on information on landscape characteristics. In view of the above, the objective of this study was to provide information on the hydrogeomorphometric characteristics and dynamics of soil ...
Adilson dos Santos Hara, Francisco   +9 more
core   +2 more sources

Comentários sobre a distribuição geográfica de Astyanax altiparanae Garutti & Britski, 2000 (Osteichthyes, Characidae) na bacia do rio Iguaçu

open access: yesActa Scientiarum: Biological Sciences, 2008
Garutti (1995) fez a revisão de algumas espécies de Astyanax (Osteichthyes, Characidae) e aquela, conhecida como “tambiú” na bacia do alto rio Paraná, anteriormente identificada como Astyanax bimaculatus, foi considerada nova e posteriormente descrita ...
Weferson Júnio da Graça   +1 more
doaj   +1 more source

Reproductive biology of a tetragonopterinae (osteichthyes, characidae) of the Ubatiba fluvial system, Maricá - RJ [PDF]

open access: yes, 1999
Aspects of the reproductive biology of one Tetragonopterinae was assessed in the Ubatiba river - Maricá / RJ. Length structure and mean size suggested sexual dimorphism, females reaching larger sizes than males.
Jaqueline Petito, Rosana Mazzoni
core   +3 more sources

ANÁLISE HIDROGEOMORFOMÉTRICA E DINÂMICA DE COBERTURA DO SOLO DA MICROBACIA DO RIO FORMOSO, AMAZÔNIA OCIDENTAL, BRASIL [PDF]

open access: yes, 2022
Information on hydrogeomorphometric characteristics and soil cover dynamics of microbasins are essential for proper land use planning. Therefore, the objective of this work was to analyze the geometric, topographic, hydrographic characteristics and the ...
Cavalheiro, Wanderson Cleiton Schmidt   +6 more
core   +2 more sources

ANÁLISE DA PAISAGEM NA MICROBACIA RIO DAS ALMAS, RONDÔNIA, AMAZÔNIA OCIDENTAL, BRASIL [PDF]

open access: yes, 2021
In recent decades, the advance of agricultural activities in the Amazon forest has been questioned in view of the negative socio-environmental consequences.
Fernandes dos Santos Junior, Nilson Reinaldo   +6 more
core   +2 more sources

LISTA DAS ESPÉCIES DE PEIXES DO RIO FRUTEIRAS (BACIA DO RIO ITAPEMIRIM), ESPÍRITO SANTO, SUDESTE DO BRASIL [PDF]

open access: yes, 2017
The Itapemirim river basin is part of the basins of southern Espírito Santo and the great Eastern coastal system and incorporates a large portion of the fish fauna of the coastal basin; 79 species are currently known in the basins of southern Espírito ...
de Almeida, Frederico Belei   +4 more
core   +1 more source

Fish, Maringá urban streams, Pirapó River drainage, upper Paraná River basin, Paraná state, Brazil [PDF]

open access: yes, 2009
The metropolitan area of Maringá, Paraná state (southeastern Brazil), has many small headwater streams that are affected by urban development. Checklists of fish species in these sites are important tools to learn about the biodiversity of impacted ...
Almir Cunico   +4 more
core   +1 more source

PROTEÍNA BRUTA EM DIETAS PARA ALEVINOS DE TAMBAQUI, COLOSSOMA MACROPOMUM (Cuvier, 1818) [PDF]

open access: yes, 2016
Tambaqui is intensively farmed because of its production characteristics; however, there is a lack of information lacks about the nutritional requirements of this species.
Bomfim, Marcos Antonio Delmondes   +4 more
core  

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