Results 11 to 20 of about 2,307 (204)

Hongos detectados en la entomofauna asociada a Espeletia pycnophylla

Revista U.D.C.A Actualidad & Divulgación Científica, 2020
Algunas especies del género Espeletia sp. (Asteraceae) son afectados por hongos fitopatógenos e insectos en páramos de los Andes del Norte, amenazando su permanencia y la prestación de servicios que se les atribuye, como la regulación del ciclo hídrico ...
Eliana Galindez Chicaiza, Luz Estela Lagos-Mora, Guillermo Castillo-Belalcázar, Claudia Salazar-González, Carlos Betancourth-García   +4 more
doaj   +4 more sources

Chemical Composition and Antibacterial Activity of the Essential Oil of [PDF]

Natural Product Communications, 2012
The essential oil of the leaves of Espeletia nana Cuatrec, obtained by hydrodistillation, was analyzed by GC-MS, which allowed the identification of 24 components, which made up 99.9% of the oil.
Alexis Peña, Luis Rojas, Rosa Aparicio, Libia Alarcón, José Gregorio Baptista, Judith Velasco, Juan Carmona, Alfredo Usubillaga   +7 more
doaj   +3 more sources

Pollination ecology in the tropical Andes: moving towards a cross-scale approach. [PDF]

Biol Rev Camb Philos Soc
ABSTRACT Plant–pollinator interactions structure ecological communities and represent a key component of ecosystem functioning. Pollination networks are expected to be more diverse and specialised in the tropics, but pollination ecology in these regions has been understudied in comparison to other areas.
Rueda-Uribe C, Chautá A, Woodman TL, Lasso E, Pelayo RC, Manrique-Garzón LM, Muñoz MC, Allgayer R, Ashman TL, Bocedi G, Burslem DFRP, Camargo-Martínez PA, Echeverry-Galvis MÁ, González-Arango C, Gubry-Rangin C, Lancaster LT, Layton KKS, Manfredini F, Martel C, Montti L, Papadopulos AST, Raguso RA, Ready J, Rico-Guevara A, Rocabado C, Travis JMJ.   +25 more
europepmc   +2 more sources

Are We Witnessing a Speciation Continuum? Evidence From Current and Past Gene Flow in the Genus Oritrophium s.s. (Asteraceae) From the Tropical High Andes. [PDF]

Mol Ecol
ABSTRACT Determining species boundaries is key for appropriately assessing biodiversity. However, the continuity of the speciation process makes delimiting species a difficult task, especially for recently diverged taxa. Furthermore, past introgression may leave traces that result in reticulate evolutionary patterns, challenging the estimation of ...
Gorospe JM, Salomón L, Armijos-Barros J, Kantor A, Kolář F, Arnelas I, Sklenář P, Schmickl R.   +7 more
europepmc   +2 more sources

Global variability in hydraulic traits and water use strategies of mountain shrubs and dwarf shrubs. [PDF]

Plant Biol (Stuttg)
Shrubs show a wide range of hydraulic strategies to achieve a balanced and favourable water status in mountain areas. Abstract Shrubs are perennial, multi‐stemmed woody plants whose adaptation to stress factors allows them to colonise extreme habitats, including high elevations. Accordingly, shrubs are one of the most important growth forms in mountain
Musso C, Ganthaler A, Mayr S.
europepmc   +2 more sources

Tracking Small Animals in Complex Landscapes: A Comparison of Localisation Workflows for Automated Radio Telemetry Systems. [PDF]

Ecol Evol
Automated radio telemetry grids provide the possibility of studying movement of small animals at very fine spatial scales, but the influence of rugged terrains and vegetation on localisation error curtails the applicability of this technology. In this study, we present a comparative workflow to reduce error and show how selecting higher radio signal ...
Rueda-Uribe C, Sargent AJ, Echeverry-Galvis MÁ, Camargo-Martínez PA, Capellini I, Lancaster LT, Rico-Guevara A, Travis JMJ.   +7 more
europepmc   +2 more sources

Phylogenetic signatures of ecological divergence and leapfrog adaptive radiation in Espeletia [PDF]

American Journal of Botany, 2021
PREMISEEvents of accelerated species diversification represent one of Earth’s most celebrated evolutionary outcomes. Northern Andean high‐elevation ecosystems, or páramos, host some plant lineages that have experienced the fastest diversification rates, likely triggered by ecological opportunities created by mountain uplifts, local climate shifts, and ...
Pouchon, Charles, Lavergne, Sébastien, Fernández, Ángel, Alberti, Adriana, Aubert, Serge, Mavarez, Jesus   +5 more
openaire   +4 more sources

Les Espècies del gènere Espeletia [PDF]

Butlletí de la Institució Catalana d'Història Natural, 1949
Cuatrecasas i Arumí, Josep
core   +2 more sources

Climatic and Edaphic Drivers of Soil Organic Carbon and Pyrogenic Carbon Stocks Across Elevation and Disturbance Gradients in Colombian Andean Forests. [PDF]

Glob Chang Biol
This study examined soil organic carbon (SOC) and pyrogenic carbon (PyC) stocks in tropical Andean soils across elevation and disturbance gradients in Colombia. SOC stocks to 100 cm depth averaged 433.10 Mg C ha−1 while PyC was 34.13 Mg C ha−1. Key drivers of PyC stocks include soil clay (%), mean annual precipitation (PA), pH, Ca, and NDVI, which ...
Montes-Pulido CR, Bird MI, da Silva Carvalho LC, Serrano J, Quesada CA, Feldpausch TR.   +5 more
europepmc   +2 more sources

Understorey vegetation moderates climate in open forests: The role of the skirt‐forming grass tree Xanthorrhoea semiplana F.Muell

Austral Ecology, Volume 48, Issue 8, Page 2185-2204, December 2023., 2023
Skirts of grass trees provide considerable buffering from ambient climatic conditions. The degree of climate moderation by microsites in forests with open canopy is determined by a complex array of drivers. Abstract Microsites are created by abiotic and biotic features of the landscape and may provide essential habitats for the persistence of biota ...
Xiangning Kok, Liene Bruns, Greg Guerin, Gunnar Keppel   +3 more
wiley   +1 more source