Results 91 to 100 of about 74,861 (209)

Conservación ex situ. Un banco de germoplasma de especies nativas. [PDF]

open access: yes
La pérdida de biodiversidad por actividades humanas, especialmente por deforestación en el Noroeste Argentino, destaca la necesidad de emprender acciones que combinen las estrategias en combinación in situ y ex situ.
De Viana, Marta Leonor   +3 more
core  

Interannual evaluation of the regenerative strategies of the exotic invasive species Gleditsia triacanthos compared with native Acacia aroma in the Chaco Serrano Woodland of Cordoba (Argentina) [PDF]

open access: yes, 2014
It has been proposed that exotic species, compared with native ones, differed in certain characteristics that may favor their expansion. The regenerative characteristics of exotic species may vary among reproductive seasons, modifying the patterns ...
Ferreras, Ana Elisa   +2 more
core   +1 more source

Unexpected spatial aggregation between two species of hummingbirds and their inconsistent spatial interactions with native and exotic plants in an urban ecological reserve

open access: yesIbis, Volume 167, Issue 4, Page 927-944, October 2025.
Hummingbirds play an important role as pollinators and are one of the primary examples of animal–plant coevolution. However, factors such as land‐use change, urbanization, exotic species introductions and the disappearance of native plants can negatively affect the persistence of hummingbird populations.
Gonzalo A. Ramírez‐Cruz   +4 more
wiley   +1 more source

Uso de espécies da flora na comunidade rural Santo Antônio, BR-163, amazônia brasileira

open access: yesFloresta e Ambiente
Realizou-se um estudo etnobotânico por meio de entrevistas com agricultores familiares da Comunidade Santo Antônio, localizada no Assentamento Moju I e II, região do entorno da rodovia BR-163. Foram encontradas 55 etnoespécies, sendo 67,3% nativas e 58,2%
Larissa Santos de Almeida   +5 more
doaj   +1 more source

Gas exchange and water use efficiency of native cover crops (Mendoza, Argentina), introduced crop species and weeds [PDF]

open access: yes, 2014
Los cultivos de cobertura son utilizados como una herramienta ambientalmentesostenible con diversos propósitos. Una de las mayores limitantes para el usode una cobertura vegetal es el consumo adicional de agua.
Alessandria, Esteban Emilio   +3 more
core  

Insights on the Potential of Natural Regeneration to Restore Cerrado Open Ecosystems

open access: yesAustral Ecology, Volume 50, Issue 9, September 2025.
The colonisation potential of native Cerrado species in degraded areas will depend on the remaining underground structures and not on seed rain from nearby conserved remnants. Effective restoration of the Cerrado will not be possible without active restoration, if the bud‐bank are not present in the system.
Bethina Stein   +4 more
wiley   +1 more source

Diferenciación de 4 especies Haplopappus mediante GC-MS [PDF]

open access: yes, 2013
78 p.En esta investigación se identificaron y cuantificaron compuestos químicos mayoritarios presentes en extractos resinosos y aceites esenciales de 4 especies de Haplopappus nativas de nuestro país; posteriormente, se comparó los patrones ...
Lizana Vargas, Laura Andrea   +1 more
core  

Listado anotado de Solanum L. (Solanaceae) en el Peru. [PDF]

open access: yes, 2015
The genus Solanum is among the most species-rich genera both of the Peruvian flora and of the tropical Andes in general. The present revised checklist treats 276 species of Solanum L., of which 253 are native, while 23 are introduced and/or cultivated. A
Baden, M.   +10 more
core   +4 more sources

Incentivo para o plantio de árvores nativas em áreas urbanas para proliferação de abelhas sem ferrão

open access: yesACTA Apicola Brasilica, 2015
Em decorrência de atividades antrópicas exploratórias, tem ocorrido aumento na supressão de espécies arbóreas, refletindo na biodiversidade e equilíbrio dos ecossistemas, reduzindo a população de espécies de abelhas. Objetivou-se com este trabalho, fazer
G. Martins   +3 more
doaj   +1 more source

Estudio morfológico de semillas de especies forestales nativas

open access: yesTecnología en Marcha, 2019
La semilla es el medio natural de dispersión, propagación y perpetuación de la mayoría de las especies y constituye, hasta el momento, la estructura menos conocida de las plantas superiores. Por el desconocimiento que existe sobre la morfología y manejo de las semillas forestales de las especies naticas, se decidió iniciar trabajos con semillas de diez
Arnáez-Serrano, Elizabeth   +1 more
openaire   +3 more sources

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