Results 51 to 60 of about 1,029,918 (230)

La Políticas Exterior de Rusia en Oriente Medio. ¿Continuidad o Cambio?

open access: yesRevista UNISCI, 1970
El recorrido histórico por la política exterior de la URSS/Rusia hacia Oriente Medio en el último siglo presenta una línea de continuidad, apenas alterada por las dinámicas espacio-temporales vividas por el país. Rusia ha ejecutado una política exterior más orientada a responder a los movimientos norteamericanos en la región que a consolidar una ...
openaire   +4 more sources

Morphotype Bias, Morph Specific Recruitment and No Elevation‐Life History Relation in High Altitude Mesquite Lizard Populations

open access: yesIntegrative Zoology, EarlyView.
Site‐level differences in population growth (λ) and phenotype frequencies. Mountain silhouettes represent the three study sites. Morph relative abundances are shown in the colored vertical bar. Point estimates and confidence intervals of λ for each site are displayed below, with the dashed line marking the threshold for demographic stability (λ = 1 ...
Brasil Canales‐Gordillo   +4 more
wiley   +1 more source

Republica de Corea :su dinamico socio del comercio exterior

open access: yes, 2020
PREFACIO / Sun Whan Chang Ⅰ. INFORMACION GENERAL TIERRA Y CLIMA HISTORIA, PUEBLO Y LENGUA POBLACION GOBIERNO RELIGION EDUCACION MEDIOS DE COMUNICACION DIAS FESTIVOS HOTELES Y LINEAS AEREAS MONEDA CORRIENTE "SAEMAUL ...

core   +1 more source

Advancing conservation breeding programs for marine invertebrates

open access: yesConservation Biology, EarlyView.
Abstract In the face of ecosystem change and biodiversity loss caused by climate change and other stressors, conservation breeding, or captive breeding, with the aim of reintroduction for wild population recovery, is an emerging tool for preventing species’ extinction and rehabilitating ecosystems.
Elora H. López‐Nandam   +3 more
wiley   +1 more source

Water quality management in a tropical karstic system influenced by land use in Chiapas, Mexico

open access: yesEnvironmental Challenges
Urbanization and agricultural activities are increasingly threatening karstic systems and the water resources they provide, which are crucial for the livelihood of rural communities.
Mazari-Hiriart Marisa   +4 more
doaj   +1 more source

Impact of global change on the distribution of mountain mammals and birds

open access: yesConservation Biology, EarlyView.
Abstract Climate change and land‐use changes are key drivers of global biodiversity loss. Many species are shifting to higher elevations or latitudes in response to global warming, often encountering unfavorable land‐use conditions during the shift. These changes can lead to reduced range size and increased extinction risks, particularly for mountain ...
Chiara Dragonetti   +5 more
wiley   +1 more source

Eficiencia del transporte de carga internacional mexicano: análisis por entidad federativa a través del Índice Malmquist, 2010-2014

open access: yesEconomía Teoría y Práctica, 2019
Un eslabón crucial en el comercio exterior de México, es el transporte de carga internacional carretero, el cual se presupone eficiente per se, lo que no siempre sucede en la realidad.
América Ivonne Zamora Torres   +1 more
doaj   +1 more source

Extreme site fidelity in long‐distance migratory shorebirds in Australia and potential implications for conservation

open access: yesConservation Biology, EarlyView.
Abstract Site fidelity is the tendency for animals to repeatedly return to the same locations, either within or between years. Site fidelity enables animals to utilize knowledge of previously visited locations, including assessments of seasonal variations in health and mortality risks (e.g., predation), resource availability, and social benefits such ...
Tobias A. Ross   +13 more
wiley   +1 more source

Tasa de cambio real y consumo: teoría, evidencia y estudios del caso colombiano (1950-1997)

open access: yesLecturas de Economía, 2010
Se presenta un modelo teórico convencional de determinación simultánea de la tasa de cambio real (el precio relativo de los bienes internacionalmente transables con respecto al de los no transables), el consumo y la posición financiera neta del país con ...
Carlos Esteban Posada
doaj   +1 more source

'Cambios estructurales en las series de comercio exterior español, 1960-1997

open access: yesEkonomiaz. Revista vasca de Economía, 2006
El artículo destaca la singularidad del periodo posterior a 1986 a través de un análisis de rupturas estructurales aplicado a los flujos de exportación e importación españoles de los últimos cuatro decenios. El trabajo confirma la existencia de una nueva etapa en el comercio exterior de España a partir de la adhesión a las Comunidades Europeas, debido ...
Ana Belén Gracia Andía   +1 more
openaire   +1 more source

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