Results 31 to 40 of about 4,281 (217)

Dynamic Adaptive Environmental Flows (DAE‐Flows) to Reconcile Long‐Term Ecosystem Demands With Hydropower Objectives

open access: yesWater Resources Research, Volume 59, Issue 7, July 2023., 2023
Abstract This study investigates how environmental flows (e‐flows) can be designed as dynamic operating policies to optimize long‐term economic and ecosystem performance in reservoir systems. The main goal is to provide e‐flow solutions that contribute to better preparedness and flexibility of hydro‐systems to face multiyear stress periods, reducing ...
Ana Paula Dalcin   +3 more
wiley   +1 more source

Cytogenetic analyses of two Curimatidae species (Pisces; Characiformes) from the Paranapanema and Tietê Rivers [PDF]

open access: yesBrazilian Journal of Biology, 2007
Cytogenetic analyses were performed in two Curimatidae species (Steindachnerina insculpta and Cyphocharax modesta) from the Paranapanema and Tietê Rivers (São Paulo State, Brazil), showing a karyotype composed of 54 meta-submetacentric chromosomes in both species. Silver- and chromomycyn-staining and fluorescent in situ hybridization (FISH) using a 18S
De Rosa, LVS   +5 more
openaire   +7 more sources

Sleeping accommodations for researchers increase the likelihood of biodiversity inventories in protected areas 在保护区内为科研人员提供住所,可增加创建生物多样性名录的可能性

open access: yesIntegrative Conservation, Volume 2, Issue 1, Page 62-68, March 2023., 2023
Biodiversity assessments are needed to better understand biodiversity distribution and threats in parks. Our results showed that arthropod inventories are more likely if park accommodations are available for researchers. Small investments in providing accommodations may increase biodiversity assessments in parks.
Gabrielly P. Ferreira   +3 more
wiley   +1 more source

A Thermo‐Compositional Model of the Cratonic Lithosphere of South America

open access: yesGeochemistry, Geophysics, Geosystems, Volume 22, Issue 4, April 2021., 2021
Abstract New seismic data on the crust and upper mantle of South America have recently become available and describe its deep structure with unprecedented resolution. Here, seismic data are combined with gravity data and mineral physics constraints to develop self‐consistent models of the temperature, composition, and density of the South American ...
N.‐P. Finger   +5 more
wiley   +1 more source

Ichthyofauna of streams of the Lower Paranapanema River basin, state of Paraná, Brazil [PDF]

open access: yesCheck List, 2015
Several studies of small watersheds of in the Upper Paraná River basin are currently available. Howev-er, the number and extent of its tributary streams still pose a challenge to enhancing current knowledge of their ichthyofauna. This study aimed to survey the fish fauna of three streams of the Lower Paranapanema River basin, state of Paraná, Brazil ...
Ana Vidotto-Magnoni   +6 more
openaire   +2 more sources

Distribution modeling of Psellogrammus kennedyi (Eigenmann, 1903) and new records in the Lower Paranapanema River, Brazil [PDF]

open access: yesCheck List, 2021
Understanding the potential distribution of non-native species can be an important tool in preventing biological invasions. We recorded for the first time Psellogrammus kennedyi, a small non-native characiform, in the Lower Paranapanema River, Brazil ...
Lucas Ribeiro Jarduli   +5 more
doaj   +3 more sources

Population genetic structuring in pacu (Piaractus mesopotamicus) across the Paraná-Paraguay basin: evidence from microsatellites [PDF]

open access: yes, 2009
The Paraná-Paraguay basin encompasses central western Brazil, northeastern Paraguay, eastern Bolivia and northern Argentina. The Pantanal is a flooded plain with marked dry and rainy seasons that, due to its soil characteristics and low declivity, has a ...
CALCAGNOTTO, Daniela, DESALLE, Rob
core   +1 more source

Fishes from first order streams of lower Paranapanema and Ivaí rivers, upper Paraná River basin, Paraná, Brazil [PDF]

open access: yesCheck List, 2012
This study was developed as a research of first order streams fish assemblages located in two Conservation Units in Northwestern Paraná, Brazil, with the purpose of providing information about ichthyofauna composition of these water bodies while they are still under protection.
Cionek, Vivian de Mello   +5 more
openaire   +3 more sources

Topics on Landscape Archaeology.

open access: yesRevista do Museu de Arqueologia e Etnologia, 2000
Relations between archaeology and geography, defined as landscape archaeology, are emphasized in this article. Archaeological investigations in Paranapanema River Basin, called Paranapanema Project, São Paulo State, reinforce this interdisciplinary ...
José Luiz de Morais
doaj   +1 more source

Fish, lower Ivinhema River basin streams, state of Mato Grosso do Sul, Brazil. [PDF]

open access: yes, 2008
The Ivinhema River basin is one of the main tributaries of the western portion of Paraná River. However,few data are available on the fish communities of its streams.
Súarez, Y. R.
core   +1 more source

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