Results 81 to 90 of about 4,281 (217)

Parameter estimates for fishes of the upper Paraná river floodplain and Itaipu reservoir (Brazil) [PDF]

open access: yes, 2005
Estimates of the growth (K), natural mortality (M), consumption/biomass (Q/B) rate and trophic level (TL) for 35 species in the upper Paraná river floodplain and the Itaipu reservoir (interconnected ecosystems) are presented.
Agostinho, A.A., Angelini, R.
core  

Lista de espécies de Sapindaceae para um remanescente de Floresta Estacional Semidecidual no sul do Brasil : Estação Ecológica do Caiuá. [PDF]

open access: yes, 2014
(Lista de espécies de Sapindaceae para um remanescente de Floresta Estacional Semidecidual no sul do Brasil: Esta- ção Ecológica do Caiuá). Com o objetivo de ampliar os conhecimentos sobre a flora do estado do Paraná e de suas áreas ripárias, foi ...
de Souza, Maria Conceição   +2 more
core   +3 more sources

Subsurface Geology of the Paraná‐Etendeka Large Igneous Province: Implications to Province Stratigraphy and CO2 Storage

open access: yesBasin Research, Volume 37, Issue 3, May/June 2025.
This work presents insights into the anatomy of the Paraná‐Etendeka volcanic sequences from subsurface geophysical data and how subsurface data aids in the stratigraphic correlation of volcanic formations regionally. Additionally, we describe facies distribution and reservoir properties, providing perspectives for CCS in the Paraná‐Etendeka LIP ...
Lucas M. M. Rossetti   +7 more
wiley   +1 more source

A new species of the catfish genus Cambeva from the Paranapanema river drainage, southeastern Brazil (Siluriformes: Trichomycteridae)

open access: yesTropical Zoology, 2020
The recently described catfish trichomycterid genus Cambeva comprises about 25 valid species, occurring mostly in river basins of south-eastern and southern Brazil. Fifteen species are endemic to the Paraná river basin, of which three are endemic to the
Axel M. Katz, Wilson J.E.M. Costa
doaj   +1 more source

Genética e conservação de estoques pesqueiros de águas continentais no Brasil: situação atual e perspectivas. [PDF]

open access: yes, 2019
Esta publicação procura traçar um pouco do panorama da pesca em águas continentais do Brasil, o impacto do uso e da degradação ambiental sobre esses recursos e a possibilidade do uso de instrumentos de genética, como uma nova abordagem para o manejo de ...
HILSDORF, A. W. S. RESENDE, E. K. de   +1 more
core  

Identification of mineral components in tropical soils using reflectance spectroscopy and advanced spaceborne thermal emission and reflection radiometer (ASTER) data. [PDF]

open access: yes, 2019
Soil characteristics provide important support for understanding transformations that occur in environmental systems. Physical characteristics and chemical compositions of soils controlled by pedogenetic processes, climatic changes and land use imply ...
SOUZA FILHO, C. R. de, VICENTE, L. E.
core   +1 more source

Environmental education for sustainable management of the basins of the rivers Pirapó, Paranapanema III and Parapanema IV [PDF]

open access: yesBrazilian Journal of Biology, 2015
The growing concern about the quantity and quality of water has led managers and researchers from various countries to concentrate efforts in the study, planning and management of watersheds, considered appropriate units for the rational and sustainable management of water resources.
Obara, A. T.   +6 more
openaire   +5 more sources

From Africa to Brazil: detection of African Oreochromis niloticus parasites in Brazilian fish farms

open access: yesActa Limnologica Brasiliensia, 2019
Aim To evaluate the introduction of Oreochromis niloticus gill parasites in the Paranapanema River basin, northern Paraná, southern Brazil, as well as to inventory its occurrences in Brazilian fish farms and discuss the risks of transmission to native ...
Diego Azevedo Zoccal Garcia   +2 more
doaj   +1 more source

Post-impoundment biomass and composition of phytoplankton in the Yangtze River [PDF]

open access: yes, 2007
Damming, and thus alteration of stream flow, promotes higher phytoplankton populations and encourages algal blooms (density > 10(6) cells L-1) in the Three Gorges Reservoir (TGR). Phytoplankton composition and biomass were studied in the Yangtze River
Chen, Hongtao   +4 more
core   +1 more source

Changes in Flood Magnitude and Frequency Projected for Vulnerable Regions and Major Wetlands of South America

open access: yesGeophysical Research Letters, Volume 52, Issue 5, 16 March 2025.
Abstract The increase in atmospheric CO2 concentration elevates atmospheric temperature and enhances water storage capacity. This could lead to more extreme precipitation events, while simultaneously, higher temperatures may cause land and soil to dry out. Such alterations create ambiguous expectations regarding the direction of hydrological changes in
I. Petry   +7 more
wiley   +1 more source

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