Results 41 to 50 of about 864,950 (233)

Multiple scales of fear: foraging behaviour of white‐naped jays in semiarid landscapes

open access: yesOikos, EarlyView.
Animals must constantly balance the need to find resources with the risk of predation. Not only avoiding direct encounters with predators but also assessing the overall risk of their environment using cues, social information or habitat traits at multiple spatial and temporal scales.
Maria Carolina Beiriz   +2 more
wiley   +1 more source

Bibliografia de recursos naturais da Amazônia brasileira. [PDF]

open access: yes, 2017
bitstream/item/145920/1/BIBLIOG-RECURSOS-NATURAIS ...
LOPES, A. de S. A., VAZ PEREIRA, I. C.
core  

DESPERDÍCIO DE ALIMENTOS: O PESO DAS PERDAS PARA OS RECURSOS NATURAIS

open access: yesRevista Agroecossistemas, 2019
Não há solução simples para alimentar sustentavelmente nove bilhões de pessoas, especialmente quando se converge para o aumento dos padrões de consumo.
Vanessa Pinto Barrozo   +4 more
semanticscholar   +1 more source

Urbanization and food transition in the Brazilian Amazon: From wild to domesticated meat

open access: yesPeople and Nature, EarlyView.
Abstract Urbanization is expected to influence food transitions, resulting in a shift from wild foods to more domesticated foods. Concomitantly, food insecurity and urban demand for natural resources, including wildlife, are expected to increase overall, even when the per capita consumption is expected to decrease.
Willandia A. Chaves   +7 more
wiley   +1 more source

The Importance of Environmental Heterogeneity in Evaluating the Conservation Status of Two Frog Species in a Changing Amazonian Interfluve

open access: yesAnimal Conservation, EarlyView.
Identifying the most effective criterion to assess the conservation status of vulnerable species in threatened tropical regions is crucial to evaluate recovery plans. We investigated the influence of environmental heterogeneity on the extent of occurrence (EOO), area of occupied habitat (AOH), and density variation of two Amazonian riparian frog ...
Rafael F. Jorge   +3 more
wiley   +1 more source

O Cajueiro nativo de roraima na experiência do Prevfogo nas terras indígenas do "Lavrado":

open access: yesBiodiversidade Brasileira, 2019
O estado de Roraima comporta a maior savana amazônica - o "lavrado", de cerca de 61 mil km², compartilhada em parte com a Guiana. A região é habitada pelas etnias Macuxi, Taurepang e Ingaricó (tronco linguístico Karib) e Wapichana (tronco Aruak ...
Ari Alfredo Weiduschat   +1 more
doaj   +3 more sources

Abiotic drivers of co‐occurrence and diversity patterns of Calopterygidae species in Amazonian protected freshwaters

open access: yesEcological Entomology, EarlyView.
Species co‐occurrences rely on their ability to explore similar or distinct available resources, and possible niche overlap can prevent their presence and establishment in a given site Damselflies of the Calopterygidae family demonstrated negative co‐occurrences in streams inside and outside PAs, highlighting that their ecological similarity is ...
Joás Silva Brito   +13 more
wiley   +1 more source

A exploração sustentada dos recursos naturais no Arquipélago dos Bijagós [PDF]

open access: yes, 2010
Considera-se pertinente este estudo sobre a exploração sustentada dos recursos naturais no Arquipélago dos Bijagós, dada a sua localização estratégica na geografia atlântica e a sua vulnerabilidade às influências externas que afectam o seu equilíbrio ...
Madeira, João
core   +1 more source

The role of habitat simplification and seasonality in shaping interactions between ants, plants and herbivores in a neotropical savanna

open access: yesEcological Entomology, EarlyView.
We evaluated how chronic anthropogenic disturbances (CAD) and seasonal variation influence interactions between ants and plants with extrafloral nectaries (EFN's), with emphasis on the responses of ants, herbivores, and plants. Ant and herbivore diversity remained stable across seasons in the preserved cerrado, whereas the pasture had higher ant ...
Edvânia Costa de Oliveira Sá   +6 more
wiley   +1 more source

Cálculo de precipitação média utilizando método de Thiessen e as linhas de cumeada

open access: yesRevista Ambiente & Água, 2018
O presente estudo propõe um método para calcular as áreas de influência baseado no Método de Thiessen e considerando as linhas de cumeada do relevo.
Alexandre Germano Marciano   +2 more
doaj   +1 more source

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