Results 71 to 80 of about 362,357 (213)

Description of a new genus and species of Candonopsini (Crustacea, Ostracoda, Candoninae) from the alluvial valley of the Upper Paraná River (Brazil, South America) [PDF]

open access: yes, 2012
The genus Candobrasilopsis gen. nov. is here described, with C. rochai gen. nov. sp. nov. as type species, from the alluvial valley of the Upper Paraná River.
Higuti, Janet, Martens, Koen
core   +3 more sources

Social, Technological, Economic, and Policy Factors in the Circular Economy Transition in Brazil

open access: yesSustainable Development, EarlyView.
ABSTRACT A well‐functioning circular economy (CE) integrates resilience across economic, environmental, and social dimensions. This study identifies key drivers and barriers to Brazil's CE transition through 20 semi‐structured interviews with stakeholders. Major sociocultural barriers include inadequate education and limited CE awareness, while growing
Alejandro Gallego‐Schmid   +9 more
wiley   +1 more source

Chromosomal analyses in Megalonema platanum (Siluriformes: Pimelodidae), an endangered species from South American rivers

open access: yesNeotropical Ichthyology
This study presents chromosomal data of Megalonema platanum from rio Tibagi, Paraná, Brazil and from rio Paraná, Argentina. The diploid number was equal 54 with karyotype composition of 24m+16sm+2st+12a in both populations.
Rafael Augusto de Carvalho   +5 more
doaj   +1 more source

Taxonomic revision of Galeocharax (Characiformes: Characidae: Characinae)

open access: yesNeotropical Ichthyology, 2017
The taxonomy of Galeocharax, a genus of freshwater fishes distributed in most South American cis-Andean river systems, except the rio Negro, rio São Francisco and rio Xingu basins and the eastern drainages of Brazil, is herein revised.
Victor Giovannetti   +2 more
doaj   +1 more source

Variabilidade genética de duas populações de Astyanax altiparanae da bacia do alto rio Paraná. [PDF]

open access: yes, 2012
O presente trabalho tem como objetivo caracterizar a estrutura genética de duas populações de A. altiparanae da bacia do alto rio Paraná (Paranapanema e Tietê) através da análise de 11 marcadores moleculares do tipo microssatélite.Organizado por: Sílvio ...
BORTOLOZZI, J.   +6 more
core  

Assessing the Effects of Biodiesel Production on Sustainability: A Bayesian Two‐Stage Data Envelopment Analysis Approach

open access: yesSustainable Development, EarlyView.
ABSTRACT Sustainable development transforms production systems, requiring integrated environmental, social, and economic strategies. Energy systems are key agro‐industrial supply chains in developing countries. Brazil's soybean supply chain impacts Gross Domestic Product, mainly through exports.
Aline Veronese da Silva   +3 more
wiley   +1 more source

Two new species of Rineloricaria (Siluriformes: Loricariidae) from the rio Iguaçu basin, southern Brazil

open access: yesNeotropical Ichthyology
Rineloricaria langei and R. maacki, new species, are described from upper and middle regions of the rio Iguaçu basin, a left bank tributary of the rio Paraná basin, southern Brazil. Rineloricaria langei has narrow body and is similar to R.
Leonardo F. S. Ingenito   +3 more
doaj   +1 more source

Estrutura e dinâmica em uma floresta de várzea do Rio Amazonas no Estado do Amapá. [PDF]

open access: yes, 2008
O Rio Amazonas; O braço norte do Rio Amazonas; A várzea do estuário amazônico; A floresta de várzea do estuário amazônico; Uso dos recursos da floresta de várzea do estuário; A estrutura da floresta de várzea do estuário; Distribuição diamétrica; A ...
QUEIROZ, J. A. L. de
core  

A novel circumscription and classification for Neurolaeneae (Asteraceae)

open access: yesTAXON, EarlyView.
Abstract Neurolaeneae (Asteraceae) have a complicated taxonomic history. The tribe was described in 1927, but subsequently disregarded in 1977, and later reinstated as a tribe following a large‐scale phylogenetic analysis of Asteraceae in 2002. To date, this tribe has remained poorly studied and it has never been the subject of a comprehensive ...
Vinicius R. Bueno   +4 more
wiley   +1 more source

GEOPROCESSAMENTO PARA CARTOGRAFIA DO ALOGRUPO ALTO RIO PARANÁ (SP, PR E MS)

open access: yesRevista Brasileira de Cartografia, 2009
Técnicas de geoprocessamento foram utilizadas para mapear a distribuição de depósitos quaternários que compõem o Alogrupo Alto Rio Paraná, na Bacia Hidrográfica do Alto Rio Paraná (SP, PR e MS).
Alethéa Ernandes Martins Sallun   +2 more
doaj  

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