Results 51 to 60 of about 10,032 (185)
Pesquisa Agropecuária Brasileira, 2004 Os sistemas agroflorestais são uma alternativa sustentável de produção agropecuária. O objetivo deste trabalho foi avaliar a qualidade de um solo sob sistema agroflorestal, mediante a quantificação dos seguintes atributos físicos do solo: densidade ...
Rodrigo Carvalho +2 more
doaj +1 more source
Wildlife Monographs, Volume 223, Issue 1, August 2026.We synthesized GPS telemetry, genetic, and pathogen data to evaluate metapopulation processes in a reintroduced Rocky Mountain bighorn sheep (Ovis canadensis canadensis) population in Dinosaur National Monument. We estimated subpopulation‐specific abundances and found 4 small subpopulations with high genetic diversity, partial connectivity, and ...
Sarah L. Carroll +8 more
wiley +1 more source
Ciência e Agrotecnologia, 2004 Objetivou-se com esta pesquisa estudar o efeito econômico do povoamento de alevinos I de carpa comum (Cyprinus carpio LINNAEUS, 1758) com densidade diferenciada e com alimentação artificial e adubação química.
Álvaro Graeff
doaj +1 more source
Densidad, clase social y apoyo expresivo
Redes. Revista hispana para el análisis de redes sociales, 2011 En el análisis de redes personales, la oposición entre redes bonding y bridging ha estado en el centro de varias de las hipótesis que relacionan la estructura de las redes con el apoyo disponible en ellas. La densidad ha sido uno de los indicadores más recurrentes para medir las redes bonding o close-knit dada su facilidad de operacionalización e ...
Cruz, Irene, Verd, Joan Miquel
openaire +6 more sources
Journal of Applied Ecology, Volume 63, Issue 8, August 2026.Our findings show that Eurasian jay dispersal activity depends on specific understorey structures when selecting caching microsites—particularly shrub cover and standing pines. These features could be directly shaped by management to promote assisted natural oak regeneration.
Olivia Lorente‐Casalini +4 more
wiley +1 more source
Ciência Rural, 2004 Com a intensa utilização de tecnologias voltadas à motomecanização das operações agrícolas, o processo de compactação do solo, causado pelo tráfego, é um fator limitante à obtenção de maior produtividade agrícola.
Streck Carlos Arnoldo +3 more
doaj
Evaluating synthetic substitutes to reduce illegal harvesting and support species recovery
Conservation Biology, Volume 40, Issue 4, August 2026.Abstract Providing synthetic substitutes is a widely promoted strategy to shift consumer demand away from wildlife products derived from threatened species. Yet, there is little evidence on whether product substitution prevents illegal or unsustainable harvesting and contributes to the recovery of threatened populations.
Aditya Shekhar Malgaonkar +17 more
wiley +1 more source
Use of intertidal areas by shrimps (Decapoda) in a brazilian Amazon estuary
Anais da Academia Brasileira de Ciências, 2014 The present work investigated the occupation and the correlation of the shrimp abundance in relation to environmental variables in different habitats (mangroves, salt marshes and rocky outcrops) in an Amazon estuary.
HEBERT A. SAMPAIO +1 more
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Uncovering correlates of decline and critical refuges for a threatened terrestrial mammal
Conservation Biology, Volume 40, Issue 4, August 2026.Abstract Globally, the geographic ranges of numerous species are contracting. Identifying spatiotemporal patterns of threat impact can illuminate why species decline in some parts of their range but persist in others. We developed a correlative approach to identify species’ response thresholds and locate ecological refuge areas associated with ...
Natalya M. Maitz +5 more
wiley +1 more source
Planta Daninha, 2011 Volunteer canola (Brassica napus) and Sinapis arvensis are well identified weeds of different cropping systems. Quantitative information on regarding seed production by them is limited.
E Soltani +4 more
doaj +1 more source