Results 41 to 50 of about 59,759 (132)

Evaluación de la riqueza y estacionalidad de aves marinas en los montes submarinos de la Cordillera Volcánica Submarina del Coco: análisis en rutas de investigación y ecoturismo

Biocenosis
Las aves marinas desempeñan un papel crítico en los ecosistemas oceánicos, aunque son uno de los grupos menos estudiados en el Pacífico Este Tropical, particularmente en Costa Rica.
Sergio Arias, Roberto Vargas-Masís, Geiner Golfín Duarte   +2 more
semanticscholar   +1 more source

Análisis de recapturas de carriceros (Acrocephalus spp.) en Txingudi: ruta migratoria, tiempo de paso y velocidades migratorias

Munibe Ciencias Naturales, 2010
Se analizan las recapturas de carriceros (Acrocephalus spp.) que se han anillado en Txingudi (N de España) y recapturado en otras zonas, y viceversa, para estudiar el origen de los carriceros que pasan por este espacio natural en su migración hacia o desde las áreas de invernada, en el C y S de África, así como sus tiempos de paso y velocidades ...
openaire   +2 more sources

Conservation‐focused mapping of avian migratory routes using a pan‐European automated telemetry network

Conservation Biology, Volume 39, Issue 4, August 2025.
Abstract Accelerated biodiversity loss has destabilized functional links within and between ecosystems. Species that cross different ecosystems during migration between breeding and nonbreeding sites are particularly sensitive to global change because they are exposed to various, often ecosystem‐specific, threats.
Lucy Mitchell, Vera Brust, Thiemo Karwinkel, Susanne Åkesson, Dmitry Kishkinev, Gabriel Norevik, Tibor Szep, Anders Hedenström, Sander Lagerveld, Barbara Helm, Heiko Schmaljohann   +10 more
wiley   +1 more source

La construcción social de la ruta migratoria en la frontera tabasqueña

REVISTA TRACE
This article analyzes migratory routes, not only as the sum of trajectories between two geographical points, rather as a process that involves the construction of social spaces through the mobility, hope and settlement of the migrants. We argue that migratory routes are constructed through widely diverse groups of people involved, such as the migrants,
Alma Rosa Lizárraga Ramos, María Dolores París Pombo   +1 more
openaire   +1 more source

Delineating ecologically distinct groups for annual cycle management of a declining shorebird

Journal of Applied Ecology, Volume 62, Issue 5, Page 1152-1165, May 2025.
Using measurements of migratory connectivity in concert with expert opinion can define ecologically distinct groups for wildlife management that differ in the environmental conditions they experience across seasons of the annual cycle, which is a key component for understanding and reversing declines of migratory species. Abstract Patterns of migratory
Elly C. Knight, Jay Carlisle, Andy J. Boyce, David Bradley, Paula Cimprich, Stephanie Coates, Stephen J. Dinsmore, Cory J. Gregory, Joel G. Jorgensen, Jeffrey F. Kelly, David Newstead, Alina Olalla, Larkin A. Powell, Amy L. Scarpignato, T. Lee Tibbitts, Nils Warnock, Walter Wehtje, Peter P. Marra, Autumn‐Lynn Harrison   +18 more
wiley   +1 more source

Racialized and moral‐religious politics of migrant acompañamiento: Informal hosting as local care entrepreneurship along migration routes

The Journal of Latin American and Caribbean Anthropology, Volume 30, Issue 1, March 2025.
Abstract This article contributes to understanding contemporary processes of racialization in the Central American migration landscape by looking at the residential reception of increasingly diverse groups of people on the move. Based on research in southern Honduras, it argues that we need to disentangle the racialized and religious politics involved ...
Nanneke Winters
wiley   +1 more source

European Biometric Borders and (Im)Mobilities in West Africa: Reflections on Migrant Strategies for Border Circumvention and Subversion

Politics &Policy, Volume 53, Issue 1, February 2025.
ABSTRACT This article argues that the European biometric ID installations and securitization practices at West African borders harm African migrants and compromise the security goals of Europe and Africa. Using Niger's experience, I contend that migrants' poor adaption to the biometric border processes is closely connected to their identity conflicts ...
Victor Chidubem Iwuoha
wiley   +1 more source

La naturaleza no existe: conservacionismos y relaciones internacionales en Doñana

Arbor: Ciencia, Pensamiento y Cultura, 2016
Tras descartar el acercamiento metodológico a la historia de Doñana como un paso hacia la “conservación de la Naturaleza” con mayúscula, este artículo sitúa la historia del Parque en los contextos políticos, personales y científicos que lo hicieron ...
Lino Camprubí
doaj   +1 more source

Habitat Changes at the Local Scale Have Major Impacts on Waterfowl Populations Across a Migratory Flyway

Global Change Biology, Volume 30, Issue 12, December 2024.
Migratory waterbirds are declining worldwide due to habitat loss, but not much is known about how the loss of specific wetlands can affect waterbird populations at the biogeographical scale. To investigate that, we used the Guadalquivir Marshes (SW Spain) as a case study and combined 38 years of waterfowl winter counts with environmental and remote ...
Miguel de Felipe, Juan A. Amat, José Luis Arroyo, Rubén Rodríguez, Carmen Díaz‐Paniagua   +4 more
wiley   +1 more source

De la miseria a la pobreza (análisis de las migraciones internas indígenas en México)

Análisis Económico, 2006
Se analizan las condiciones de pobreza en las entidades con una proporción importante de población indígena, así como las principales entidades destino, con el propósito de identificar los factores y las condiciones que han permitido la consolidación ...
José Manuel Hernández Trujillo
doaj