Results 21 to 30 of about 1,000 (172)

Redes e intercambio de capitales en condiciones de pobreza

open access: yesRedes. Revista hispana para el análisis de redes sociales, 2008
This paper refers to the study of the social networks involved in the strategies of social reproduction of poor families, in the view of theoretical discussions as well as empirical analysis. In the first place I explain the concept of network and social capital that I utilize in my investigations, emphasizing the way in which they insert themselves ...
openaire   +10 more sources

ANARQUISTAS "EN MOVIMIENTO". REDES DE CIRCULACIÓN E INTERCAMBIO EN EL NORTE GRANDE, 1900-1930 [PDF]

open access: yesDiálogo andino, 2020
espanolUtilizando una perspectiva metodologica basada en el enfoque transnacional y la relacion entre biografia e historia social, en el presente articulo nos proponemos reconstruir las trayectorias de algunos anarquistas "en movimiento", procedentes de Argentina, Chile y Bolivia, como expresion de un fenomeno mas general.
Ivanna Margarucci   +1 more
openaire   +1 more source

Redes de intercambio tempranas en lo Hoya Amazónica

open access: yesAmazonía Peruana, 1983
La única distribución diferencial de los recursos naturales entre la varzea y la tierra firme en la cuenca del Amazonas no puede explicar las extensas redes comerciales a lo largo del río principal que operaban en el momento de la conquista española de la zona.
openaire   +2 more sources

Effects of selective harvest on antler size of white‐tailed deer in Texas, USA

open access: yesWildlife Monographs, Volume 222, Issue 1, June 2026.
We conducted 20 years of experiments on the selective harvest of white‐tailed deer by antler size, judged inferior, in 2 areas of South Texas, USA. Selective harvest increased the phenotypic antler size of older males in one study area but not the other. There was little evidence of evolution resulting from selective harvesting. Abstract There has been
Don A. Draeger   +8 more
wiley   +1 more source

Simulating drying and human impacts on river networks to evaluate biological quality indices performance through the lens of metacommunity theory

open access: yesJournal of Applied Ecology, Volume 63, Issue 5, May 2026.
This work constitutes a first step towards developing simulation‐based assessments that incorporate catchment drying patterns to support biomonitoring of drying river networks. Our approach can inform stakeholders when current methods are likely to fail and contribute to decision‐making on whether adapting current methods is possible or developing new ...
Zeynep Ersoy   +6 more
wiley   +1 more source

A response to ‘Quantifying phenotypic plasticity at multiple levels—A comment on Gómez et al.’

open access: yesFunctional Ecology, Volume 40, Issue 3, Page 560-562, March 2026.
Read the free Plain Language Summary for this article on the Journal blog. Abstract In this reply, we clarify several conceptual misunderstandings raised in response to our Perspective on quantifying phenotypic plasticity. We emphasize that our central argument concerns the rigorous estimation of the magnitude of plasticity, rather than its mere ...
José M. Gómez   +3 more
wiley   +1 more source

Underrepresentation of bats in Africa's protected areas

open access: yesConservation Biology, Volume 40, Issue 1, February 2026.
Abstract Biodiversity is severely threatened globally, with habitat loss and other human pressures accelerating species extinctions. Protected areas (PAs) are a critical conservation tool; however, their effectiveness in safeguarding many taxa, such as bats, remains unclear.
Cecilia Montauban   +9 more
wiley   +1 more source

Movilidad científica y redes de vinculación internacional. El caso de los investigadores uruguayos

open access: yesRevista Latinoamericana de Población, 2018
En este artículo se analizan los determinantes del tamaño de las redes de vinculación internacional que integran investigadores uruguayos, con especial énfasis en el estudio de cómo el estatus migratorio de los investigadores se asocia a la pertenencia a
Sofía Robaina
doaj   +7 more sources

Spatial segregation and bycatch risk as potential drivers of population trends of wandering albatrosses at South Georgia

open access: yesConservation Biology, Volume 40, Issue 1, February 2026.
Abstract Spatial segregation in at‐sea distribution is frequently observed in seabirds and can have important implications for conservation and management. Globally, many albatross and petrel populations are declining due to bycatch in fisheries. In South Georgia, the decrease in wandering albatrosses (Diomedea exulans) differs among breeding sites ...
V. Warwick‐Evans   +3 more
wiley   +1 more source

Movilidad de estudiantes universitarios en Iberoamérica: instrumentos para el reconocimiento de los estudios

open access: yesRevista Iberoamericana de Educación, 2004
La puesta en marcha del Programa de Intercambio y Movilidad Académica (PIMA) entre universidades iberoamericanas, hizo necesario el diseño de estrategias y de instrumentos válidos para todas las entidades educativas componentes de las redes, que ...
Manuel Jaén García, Ana Madarro Racki
doaj  

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