Results 41 to 50 of about 238,237 (159)

Spatial Structure Explains Morphological Variation Better Than Climatic Gradients in the South American Rattlesnake (Crotalus durissus)

open access: yesEcology and Evolution, Volume 16, Issue 3, March 2026.
We evaluated whether climatic gradients or spatial structure better explain body size variation in the South American rattlesnake (Crotalus durissus) across its wide geographic range. After explicitly accounting for spatial autocorrelation, climatic variables were not significant predictors of body size in either sex, whereas sex‐specific spatial ...
Mileny Otani   +3 more
wiley   +1 more source

The return of the Iberian lynx to Portugal: local voices

open access: yesJournal of Ethnobiology and Ethnomedicine, 2018
Background Ethnographic research can help to establish dialog between conservationists and local people in reintroduction areas. Considering that predator reintroductions may cause local resistance, we assessed attitudes of different key actor profiles ...
Margarida Lopes-Fernandes   +2 more
doaj   +1 more source

Síntese de diagnóstico: sistema biofísico [PDF]

open access: yes, 2006
Este trabalho faz uma caracterização da estrutura biofísica e das dinâmicas de ocupação do solo na região de Trás-os-Montes e Alto Douro (TMAD), com base na avaliação global dos valores naturais da região e da sua interacção com as actividades humanas ...
Aguiar, Carlos   +8 more
core  

Abundance and Seasonal Dynamics of Guiana Dolphins (Sotalia guianensis) in Southern Brazilian Estuarine and Adjacent Coastal Waters

open access: yesAquatic Conservation: Marine and Freshwater Ecosystems, Volume 36, Issue 2, February 2026.
ABSTRACT Estimating population parameters is crucial for understanding species dynamics and assessing anthropogenic impacts, thereby supporting conservation efforts. We evaluate key population parameters—group structure, abundance and capture–recapture probabilities—of the Guiana dolphin in the Paranaguá Estuarine Complex and adjacent coastal waters ...
Stephane P. G. de Moura   +3 more
wiley   +1 more source

Akodon serrensis Thomas, 1902 (Mammalia: Rodentia: Sigmodontinae): records in Santa Catarina state, southern Brazil [PDF]

open access: yesCheck List, 2012
We report Akodon serrensis Thomas, 1902 from three localities in the state of Santa Catarina, in southern Brazil. The specimens were identified based on cytogenetic and craniometric analyses. These are the first records of A. serrensis collected in Santa
André Testoni   +4 more
doaj   +3 more sources

Sistemas de monitorização e manutenção de infra-estruturas ferroviárias: rede convencional e alta velocidade [PDF]

open access: yes, 2010
A decisão de realizar trabalhos de manutenção ou de construção de novas linhas, depende fundamentalmente do tipo e frequência das circulações, assim como dos parâmetros de qualidade e conforto pretendidos em cada situação.
Alexandre, João Humberto Botelho
core  

The Role of Elevation, Connectivity and Land Cover on Migratory and Non‐Migratory Fish Communities in an Amazonian Riverine System

open access: yesAquatic Conservation: Marine and Freshwater Ecosystems, Volume 36, Issue 2, February 2026.
ABSTRACT Dams and deforestation are key drivers of freshwater biodiversity loss in the Amazon, as they alter river connectivity, water quality and habitat structure. This study investigates how connectivity (Reach Connectivity Index—RCI), elevation and natural land cover influence the diversity and composition of fish assemblages in a highly fragmented
Izaias Médice Fernandes   +6 more
wiley   +1 more source

Com muito gosto. Alimentação saudável, vida saudável [PDF]

open access: yes, 2012
Em Portugal, as tradições culinárias e gastronómicas são muito diversificadas. No Algarve, os ingredientes da culinária são muito variados, incluem os produtos da horta, do quintal, da agricultura industrial, da capoeira, da pecuária, da mariscagem e da ...
Braz, Nídia
core  

Serviços ecossistêmicos estratégicos: importância das unidades de conservação federais na segurança alimentar, pela conservação de parentes silvestres de plantas alimentícias

open access: yesBiodiversidade Brasileira
O presente artigo investiga as ocorrências dentro das unidades de conservação federais de espécies parentes silvestres de plantas de importância alimentar. Foram escolhidas as espécies dos gêneros Arachis (gênero do amendoim), Ipomoea (da batata-doce) e
Matheus Costa Ribeiro   +2 more
doaj   +1 more source

Melanonus zugmayeri Norman, 1930, captured off Portugal. A review of the current knowledge on this species

open access: yesScientia Marina, 2001
The capture of two specimens of Melanonus zugmayeri Norman, 1930 (Melanonidae) off Portugal was reported. Morphometric and meristic characteristics of the specimens examined were presented.
Miguel Henriques   +2 more
doaj   +1 more source

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