Results 31 to 40 of about 439 (161)

Una visión paleolimnológica de la variabilidad hidroclimática reciente en el centro de Argentina: desde la pequeña edad de hielo al siglo XXI.

open access: yesLatin American Journal of Sedimentology and Basin Analysis, 2021
En este trabajo se presenta una revisión de diferentes estudios paleolimnológicos previamente publicados y desarrollados en la región subtropical Argentina, con la finalidad de efectuar comparaciones latitudinales de la respuesta hidrológica de estos ...
Francisco E. Córdoba   +4 more
doaj   +2 more sources

Record phenological responses to climate change in three sympatric penguin species

open access: yesJournal of Animal Ecology, Volume 95, Issue 3, Page 455-469, March 2026.
This paper is impressive because we managed to monitor extensively a really difficult place to reach and operate in. We deployed 77 cameras across Antarctica and the Sub Antarctic islands to monitor three different species of penguins. We found that they are the fastest advancing vertebrates with respect to their timing of breeding.
Ignacio Juarez Martinez   +8 more
wiley   +1 more source

Dinámica estacional de pasto banderita [Bouteloua curtipendula (Mich.) Torr.] en Chihuahua, México: enfoque geoestadístico

open access: yesRevista Mexicana de Ciencias Pecuarias
Los datos fenológicos observados en tierra, junto con datos satelitales, son herramientas cruciales para identificar la estación de crecimiento de la vegetación.
Ireyli Zuluamy Iracheta-Lara   +4 more
doaj   +1 more source

Community‐driven variations in snow algae color modulate snow albedo reduction

open access: yesNew Phytologist, Volume 249, Issue 4, Page 1739-1752, February 2026.
Summary Snow algae blooms visibly alter snow color and surface energy balance, yet the biological basis of this variability remains unclear. We investigated how pigment composition and community structure shape the optical properties of snow algae blooms of distinct colors – red, orange, and green – co‐occurring within the same snowfield in Glacier ...
Pablo Almela   +4 more
wiley   +1 more source

Variabilidad ambiental y respuestas fisiológicas de Polylepis cuadrijuga (Rosaceae) en un ambiente fragmentado en el Páramo de la Rusia (Colombia)

open access: yesRevista de Biología Tropical, 2013
Polylepis cuadrijuga is an endemic woody species from the Colombian Eastern range, being the only tree species with capacity to live on mountainous environments beyond 4 000m of altitude. Grazing and agriculture have transformed at least 30% of the Guantiva-La Rusia region, turning continuous extensions of high Andean forest in a fragmented landscape ...
Carolina del Valle Ramos   +3 more
openaire   +3 more sources

Finding floral and faunal species richness optima among active fire regimes

open access: yesConservation Biology, Volume 39, Issue 6, December 2025.
Abstract Changing fire regimes have important implications for biodiversity and challenge traditional conservation approaches that rely on historical conditions as proxies for ecological integrity. This historical‐centric approach becomes increasingly tenuous under climate change, necessitating direct tests of environmental impacts on biodiversity.
Zachary L. Steel   +8 more
wiley   +1 more source

Great minds map alike: Citizen and expert distribution models of schistosome snail hosts in rural west Uganda

open access: yesEcological Solutions and Evidence, Volume 6, Issue 4, October–December 2025.
Citizen scientists and an expert jointly monitor Biomphalaria snails (the intermediate host of Schistosoma mansoni) in rural areas of southwest Uganda, generating over 4500 georeferenced records. By comparing expert‐ and citizen‐based distribution models under perfect and imperfect detection, we demonstrate that site type and NDVI consistently ...
Noelia Valderrama‐Bhraunxs   +5 more
wiley   +1 more source

Citogenética de peces

open access: yesVisión Antataura
El papel fundamental de los peces es mantener el equilibrio en el ecosistema, por su adaptabilidad.  La diversidad genética y estructura cromosómica refleja la biología evolutiva a través de técnicas de cariotipado, bandeo cromosómico e hibridación ...
Mauro Nirchio Tursellino   +2 more
doaj   +1 more source

Salty suitors: High larval sodium intake reduces adult lifespan and influences reproductive behaviour in a lepidopteran herbivore

open access: yesEcological Entomology, Volume 50, Issue 5, Page 886-898, October 2025.
Low‐sodium females took significantly longer to start mating than high‐sodium females, but no pairings differed in the duration of copulation. Reproductive outputs, measured by number of clutches, hatching young, adult offspring and pupation time, did not differ across parental sodium pairings.
Maggie C. Vincent   +3 more
wiley   +1 more source

INCIDENCIA DE LA VARIABILIDAD Y CAMBIO CLIMÁTICO SOBRE LAS COBERTURAS VEGETALES DE LA CUENCA DEL RÍO GUAPÉ DEL PÁRAMO SUMAPAZ

open access: yesRevista Ingeniería, Matemáticas y Ciencias de la Información
Los páramos son ecosistemas que no solo tienen importancia hidrológica, sino, también, son esenciales en el ámbito ambiental, social, cultural, entre otros.
Milton Augusto García Mora   +2 more
doaj   +1 more source

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