Results 21 to 30 of about 2,563 (104)

La creciente dependencia de mano de obra migrante para tareas agrícolas en el centro global. Una perspectiva comparada

open access: yesEstudios Geográficos, 2020
Numerosos estudios, sobre todo en las últimas décadas, han señalado el progresivo aumento del número de migrantes realizando trabajo agrícola en los Estados del centro global. Desde el paradigma de la ecología-mundo, se teorizó sobre el hecho de que este
Yoan Molinero-Gerbeau
doaj   +1 more source

Assessing limits of sustainable seed harvest in wild plant populations

open access: yesConservation Biology, Volume 39, Issue 5, October 2025.
Abstract Seed harvesting from wild plant populations is key for ecological restoration, but it may threaten the persistence of the source populations. Consequently, several countries have set guidelines limiting the proportions of harvestable seeds. However, these guidelines are inconsistent and lack a solid empirical basis.
Anna Bucharova   +3 more
wiley   +1 more source

Demographic performance review of a reintroduction project: Iberian lynx in Extremadura

open access: yesJournal of Applied Ecology, Volume 62, Issue 9, Page 2189-2201, September 2025.
Demographic performance reviews are essential for understanding the drivers of population growth and for evaluating the outcomes of reintroduction initiatives. IPMs as exemplified by our Iberian lynx case study provide a powerful and flexible framework for quantifying reintroduction performance and addressing key research and management questions.
José Jiménez   +7 more
wiley   +1 more source

Influences on cannabis policy design and adaptation in the American states

open access: yesPolicy Studies Journal, Volume 53, Issue 3, Page 723-746, August 2025.
Abstract Despite federal prohibitions, three‐quarters of states had implemented medical marijuana laws (MML) and one‐third had implemented recreational cannabis laws (RCL) by 2020. State policy designs varied considerably, and we focus on policy development and maturation in policy implementation, examining factors influencing design features of policy
Grant W. Neeley   +1 more
wiley   +1 more source

Forest citizens and people‐centered conservation in the Brazilian Amazon

open access: yesConservation Biology, Volume 39, Issue 3, June 2025.
Abstract Demands for territorial recognition are foundational to the claiming of rights by forest‐proximate people who attempt to conserve their forests. The rights of these often‐marginalized populations have been largely overlooked by conservationists, yet they are central to achieving people‐centered conservation. We further developed the concept of
Luke Parry   +9 more
wiley   +1 more source

Spatiotemporal Dynamics of Non‐Ecological Speciation in Rubyspot Damselflies (Hetaerina spp.)

open access: yesMolecular Ecology, Volume 34, Issue 12, June 2025.
ABSTRACT Non‐ecological speciation is a common mode of speciation, which occurs when allopatric lineages diverge in the absence of pronounced ecological differences. Yet, relative to other speciation mechanisms, non‐ecological speciation remains understudied.
C. Patterson   +8 more
wiley   +1 more source

Análisis del desempleo urbano a través de un estudio comparativo de métodos de clasificación

open access: yesRevista de Economía y Estadística, 2005
Este trabajo propende a identificar los factores de riesgo que inciden en la precariedad laboral de la Población Económicamente Activa. Se adoptó como plataforma informativa la base de datos de la Encuesta Permanente de Hogares, octubre 2002, relevada ...
Margarita Díaz   +4 more
doaj  

Reframing the Relationship Between Fertility and Education in Adolescence: 60 Years of Evidence From Latin America

open access: yesPopulation and Development Review, Volume 51, Issue 2, Page 656-701, June 2025.
Abstract It is a demographic puzzle that Latin America and the Caribbean's high levels of adolescent fertility have persisted over the course of its dramatic fertility transitions and schooling expansions. These phenomena usually occur alongside postponements to entry into motherhood.
Ann Garbett   +3 more
wiley   +1 more source

Remove saplings early: Cost‐effective strategies to contain tree invasions and prevent their impacts

open access: yesJournal of Applied Ecology, Volume 62, Issue 3, Page 661-676, March 2025.
Our highest‐ranking strategies represent management actions to start implementing in the field as part of an adaptive management plan that iteratively evaluates the validity of our simulation model and updates the management recommendations. Our study can be applied to guide management of invasive pines and replicated with any invasive woody species ...
Jaime Moyano   +7 more
wiley   +1 more source

Is there a basic framework for training in demography?

open access: yesPapeles de Población, 2003
¿Existe un marco de referencia básico para la enseñanza de la demografía?: Este trabajo hace un recuento del programa de demografía en Cedeplar —desde su comienzo como especialización en la maestría en la facultad de Economía, hasta la actualidad ...
Simone Wajnman   +1 more
doaj  

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