Results 261 to 270 of about 2,550,404 (403)

Assessing spatial variability and efficacy of surrogate species at an ecosystem scale

open access: yesConservation Biology, EarlyView.
Abstract Preserving biodiversity is a central goal of conservation, but, in practice, monitoring biodiversity often involves assessing population trends for one or a handful of species that are presumed proxies for biodiversity. Despite the popularity of surrogate species strategies, the links between biodiversity and surrogate species are rarely ...
Kristin M. Brunk   +4 more
wiley   +1 more source

El cambio social

open access: yesEconómica, 1958
The concept of social change refers to alterations and modifications in the social behavior and the cultural values of determinated social systems and structures. In opposition to the so called social progress, social change has no teologic meaning. Social system means a structure of social processes and relations showing some regularity. The dichotomy
openaire   +2 more sources

Call for new criteria for monitoring and registering Natura 2000 species data

open access: yesConservation Biology, EarlyView.
Abstract The European Union's Birds and Habitats Directives are intended to guarantee the persistence of species and natural habitats across member states. To achieve this laudable aim, the Natura 2000 network of protected areas was established in 1992. Since then, member states are required to regularly monitor species and habitats and report findings
Meritxell Genovart   +8 more
wiley   +1 more source

Habitat dynamics of flagship species for conservation prioritization in southern Europe

open access: yesConservation Biology, EarlyView.
Abstract Biodiversity loss is accelerating due to human actions, and decision‐making for conservation needs to be streamlined. Ex situ biodiversity modeling and monitoring based on satellite time‐series data could be an affordable and cost‐efficient tool for improving the prioritization of conservation areas.
Antonio Velasco‐Rodríguez   +4 more
wiley   +1 more source

Una letra de cambio avalada de 1403 [PDF]

open access: hybrid, 1983
Rafael Conde y Delgado de Molina
openalex   +1 more source

¿Cambio climático? [PDF]

open access: yes, 1991
Puigcerver, Manuel
core  

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