Results 71 to 80 of about 713,515 (172)

Amphibians' Expansion to Record Elevations Influences Chytrid (Batrachochytrium dendrobatidis) Infection Dynamics

open access: yesBiotropica, Volume 58, Issue 2, March 2026.
Peruvian frogs underwent a climate‐driven range expansion into deglaciating mountains, exposing themselves and their fungal pathogen Batrachochytrium dendrobatidis (Bd) to challenging new thermal environments. Bd has dispersed extensively in these new habitats, and elevation may mediate the apparent sublethal impacts of infection for frogs.
Emma Steigerwald   +6 more
wiley   +1 more source

Variación sintáctica en la causativización léxica [PDF]

open access: yes, 2014
La investigación de los patrones de causativización léxica (directa) de intransitivos es un tema fundamental en el campo léxico-semántico, puesto que las posibilidades y restricciones en la causativización de estos verbos siempre han provocado divisiones
Jiménez Fernández, Ángel Luis   +1 more
core  

Policymaking for Emigrants in Latin America and the Caribbean: A Mixed‐Methods Study

open access: yesLatin American Policy, Volume 17, Issue 1, March 2026.
ABSTRACT While scholars have identified models of political emigrant policies across countries, we still lack an understanding of how these models come about and persist. Using a sequential mixed‐methods approach—including quantitative analysis of policy mixes in 22 Latin American and Caribbean countries and a comparative case study of Colombia and ...
Luicy Pedroza, Pau Palop‐García
wiley   +1 more source

Dificultades en el aprendizaje de la noción de variación [PDF]

open access: yes, 1998
Este artículo considera algunas dificultades de comprensión sobre variación en estudiantes de octavo grado. La aproximación a la historia de la matemática señala que la variable es una herramienta de la matemática para representar la variación y que su ...
Andrade, Carmen
core  

A Dominant Founder Lineage Has Possible Fitness Costs for the Endangered Mexican Grey Wolf

open access: yesMolecular Ecology, Volume 35, Issue 5, March 2026.
ABSTRACT The Mexican grey wolf (Canis lupus baileyi) is an endangered and genetically distinct subspecies of grey wolf adapted to the warm climates of the southwestern United States and Mexico. Following centuries of eradication efforts, Mexican grey wolves were protected under the Endangered Species Act in 1976, prompting an international ex situ ...
Yeraldi Loera   +12 more
wiley   +1 more source

Beyond species means – the intraspecific contribution to global wood density variation

open access: yesNew Phytologist, Volume 249, Issue 6, Page 2630-2651, March 2026.
Summary Wood density is central for estimating vegetation carbon storage and a plant functional trait of great ecological and evolutionary importance. However, the global extent of wood density variation is unclear, especially at the intraspecific level. We assembled the most comprehensive wood density collection to date, including 109 626 records from
Fabian Jörg Fischer   +105 more
wiley   +1 more source

Construcción de números figurales desde el análisis aritmético hasta su generalización [PDF]

open access: yes, 2017
Este taller experiencial tiene como propósito construir números figurales para su generalización desde el análisis, organización y modelación de procesos que involucran variación, mediante el uso de leyes matemáticas, sucesiones, tablas y gráficas ...
Estrada , Daniel   +3 more
core  

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