Results 21 to 30 of about 1,075 (178)

Assessing responses of reef island seabirds to environmental and anthropogenic drivers

Conservation Biology, EarlyView.
Abstract Tropical insular ecosystems face escalating, cumulative impacts of land‐ and sea‐based ecological threats that jeopardize the long‐term sustainability of their native communities. This joint vulnerability is epitomized by reef island seabirds, which are exposed to reef decline and coastal erosion driven by climate change, reduction in prey ...
Tristan Berr, Alexandre Millon, Pascal Dumas, Poetea Guehenneuc, Fany Perez, Hélène De Méringo, Julien Baudat‐Franceschi, Éric Vidal   +7 more
wiley   +1 more source

Control lineal robusto de sistemas no lineales diferencialmente planos

Revista Iberoamericana de Automática e Informática Industrial RIAI, 2011
Resumen: En este trabajo se proponen controladores basados en observadores lineales para el control robusto de una clase amplia de sistemas no lineales conocidos como sistemas diferencialmente planos, sean estos monovariables o multivariables.
Hebertt Sira-Ramirez, Alberto Luviano-Juárez, John Cortés-Romero   +2 more
doaj   +1 more source

Wood Thrush (Hylocichla mustelina) occupancy patterns reveal sensitivity to low precipitation on nonbreeding grounds in northern Costa Rica

Ibis, EarlyView.
Climatic change and anthropogenic disturbances are reshaping animal populations. Habitat loss and extreme climatic events are particularly strong drivers of declines in species that depend on forested areas. For migratory songbirds, climate and the persistence of suitable habitat over time are fundamental to sustaining populations annually.
Isabel Vargas‐Valverde, Natalie V. Sánchez, Manuel Spínola, Gerardo Avalos   +3 more
wiley   +1 more source

Ecology of reintroduced Rocky Mountain bighorn sheep in Dinosaur National Monument La Ecología de Borrego Cimarron de las Montañas Rocosas Reintroducido en el Monumento Nacional de Dinosaurio

Wildlife Monographs, Volume 223, Issue 1, August 2026.
We synthesized GPS telemetry, genetic, and pathogen data to evaluate metapopulation processes in a reintroduced Rocky Mountain bighorn sheep (Ovis canadensis canadensis) population in Dinosaur National Monument. We estimated subpopulation‐specific abundances and found 4 small subpopulations with high genetic diversity, partial connectivity, and ...
Sarah L. Carroll, Elizabeth P. Flesch, Salix R. Scoresby, Emily Spencer, Rachel S. Crowhurst, Clinton W. Epps, Nathan L. Galloway, William M. Janousek, Tabitha A. Graves   +8 more
wiley   +1 more source

Acorn caching hotspots of the Eurasian jay in pine plantations: Ecological basis for understorey management to assist oak regeneration

Journal of Applied Ecology, Volume 63, Issue 8, August 2026.
Our findings show that Eurasian jay dispersal activity depends on specific understorey structures when selecting caching microsites—particularly shrub cover and standing pines. These features could be directly shaped by management to promote assisted natural oak regeneration.
Olivia Lorente‐Casalini, Pedro Villar‐Salvador, Carlota Arroyo‐Casas, Amaia Vieco‐Martínez, José María Rey‐Benayas   +4 more
wiley   +1 more source

Network modularity analysis reveals strategies for strengthening forest resistance, recovery and resilience to disturbances

Journal of Ecology, Volume 114, Issue 8, August 2026.
Our findings highlight the need to jointly consider resistance, recovery and resilience when conceptualizing or implementing forest management strategies. Our network approach identifies the bundles of manageable predictors most consistently associated with forest resistance and resilience, providing a basis for developing management strategies, while ...
Pilar Hurtado, Josep Maria Espelta, Luciana Jaime, Manto Samou Kokolaki, Ella Jaeger, Francisco Lloret   +5 more
wiley   +1 more source

Una aplicación de la teoría de perturbaciones en la mecánica cuántica elemental

Momento, 1991
En el presente artículo se presentan y discuten algunos resultados obtenidos al hacer uso de la teoría de perturbaciones de primer orden independiente del tiempo, en un problema físico sencillo.
Mauricio García Castañeda
doaj  

Efecto de las hozaduras de jabalí sobre el valor ecológico y pastoral de pastos supraforestales pirenaicos

Pirineos: Revista de Ecología de Montaña, 2011
Las hozaduras de jabalí son una de las mayores perturbaciones actuales de los pastos supraforestales pirenaicos. Sus consecuencias para el ecosistema no están todavía perfectamente descritas, a pesar de ser uno de los hábitats de mayor interés de ...
C. G. Bueno, I. C. Barrio, R. García-González, C. L. Alados, D. Gómez-García   +4 more
doaj   +1 more source

Climatic niche position predicts population dynamics in Mediterranean shrubs after drought

Journal of Ecology, Volume 114, Issue 8, August 2026.
Climatic conditions closer to the species' climatic niche centroid generally resulted in higher population growth in two Mediterranean shrubs, but demographic responses differed between species and were further influenced by drought‐induced vegetation die‐off.
Teresa Sánchez‐Mejía, Maria Paniw, Francisco Lloret   +2 more
wiley   +1 more source

Controlabilidad de ecuaciones de evolución semilineales con impulsos y retardos

NOVASINERGIA, 2020
Para muchos sistemas de control en la vida real, impulsos y retardos son fenómenosintrínsecos que no modifican su controlabilidad. Así conjeturamos que, bajo ciertascondiciones, perturbaciones del sistema causadas por cambios abruptos y retardos ...
Jesús Aponte, Hugo Leiva
doaj   +1 more source