Results 71 to 80 of about 295,506 (201)

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

open access: yesIbis, 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   +3 more
wiley   +1 more source

Prevalence of Plasmodium parasites in non-human primates and mosquitoes in areas with different degrees of fragmentation in Colombia

open access: yesMalaria Journal, 2019
Background Parasites from the genus Plasmodium, the aetiological agent of malaria in humans, can also infect non-human primates (NHP), increasing the potential risk of zoonotic transmission with its associated global public health concerns.
Silvia Rondón   +3 more
doaj   +1 more source

Thermotolerance thresholds of the photosystem II increase with elevation in conifer species in the Spanish Pyrenees

open access: yesPlant Biology, EarlyView.
In vitro‐tested photosystem II thermotolerance of seven temperate conifers indicated higher thermal thresholds in species growing in high elevations compared to those in the lowlands. Higher thermotolerance might be explained by the adaptation of species in higher elevations to extreme diurnal temperature fluctuations.
N. Kunert, E. Düsterhöft
wiley   +1 more source

Revista Odontológica de Los Andes. Vol. 20, Núm. 1. Enero- Junio 2025

open access: yes
Ver Texto Complero de: Revista Odontológica de Los Andes. Vol. 20, Núm. 1.
de Los Andes, Universidad
core   +1 more source

Mixed‐vertebrate pollination traits and pollinators of Haageocereus acranthus (Cactaceae) in a lomas desert ecosystem of coastal Peru

open access: yesPlant Biology, EarlyView.
In a lomas desert ecosystem of coastal Peru, the columnar cactus Haageocereus acranthus shows traits and interactions consistent with a mixed‐vertebrate pollination system (hummingbirds and bats), with no detectable differences between flower colour morphotypes in either traits or interactions.
B. Garcia‐Simpson   +3 more
wiley   +1 more source

CÓDIGOS DE BARRAS DE LA VIDA: INTRODUCCIÓN Y PERSPECTIVA

open access: yesActa Biológica Colombiana, 2011
RESUMEN Los códigos de barra de ADN representan una iniciativa global para acumular cortas secuencias estandarizadas de ADN de la gran mayoría de las especies de eucariotas del planeta, con el propósito de facilitar la identificación y conocimiento de la
Andrew J. Crawford   +2 more
doaj  

Distribución y conservación de especies amenazadas en Mesoamérica, Chocó y Andes tropicales

open access: yesRevista Mexicana de Biodiversidad, 2011
En este estudio se modeló el nicho ecológico proyectado como distribución potencial de 313 especies amenazadas en Mesoamérica, Chocó y los Andes tropicales, según las listas de la UICN.
María Cecilia Londoño-Murcia   +1 more
doaj   +1 more source

Al Este de los Andes. Tomo II

open access: yes, 1988
Esta obra se propone superar la rígida división que suelen establecer los estudios americanistas entre las sociedades andinas y las sociedades de la selva amazónica. En el primer tomo, F. M. Renard-Caseritz y Th.
Taylor, Anne-Christine
core   +1 more source

Gonolobus in the spotlight: History, diversity, and citizen science

open access: yesTAXON, Volume 75, Issue 5, October 2026.
Abstract Gonolobus (Apocynaceae) is a distinctive genus of climbing plants, distributed from the southern United States to Argentina. This study presents a comprehensive, integrative analysis of the genus, synthesizing its intricate taxonomic history, biogeographic patterns, and the contribution of citizen science to its modern systematics. We compiled
Leonardo O. Alvarado‐Cárdenas   +4 more
wiley   +1 more source

Registro de diatomeas de los últimos 1400 años de la Laguna Pululos, Jujuy, Argentina

open access: yesEcología Austral, 2015
En este trabajo se presenta información paleoambiental de alta resolución cronológica (multi-decadal) de los últimos 1400 años para el sector noroeste de la Puna seca de la provincia de Jujuy (Argentina).
Marcelo R. Morales   +2 more
doaj   +1 more source

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