Results 1 to 10 of about 33 (28)

Seeing the wood despite the trees: Exploring human disturbance impact on plant diversity, community structure, and standing biomass in fragmented high Andean forests. [PDF]

Ecol Evol, 2021
High Andean forests play a key role in providing ecosystem services for neighboring urban settlements. Here, we aimed to identify and understand the effects of anthropogenic perturbations on diversity, composition, and structure of plant communities, as well as aboveground biomass in high Andean forest remnants in the hinterland of Bogotá.
Calbi M, Fajardo-Gutiérrez F, Posada JM, Lücking R, Brokamp G, Borsch T.   +5 more
europepmc   +2 more sources

A new species of Espeletiopsis (Millerieae, Asteraceae) from Colombia [PDF]

PhytoKeys, 2013
A new species of Espeletiopsis was found in two small páramos of Norte de Santander, Colombia. The species is named Espeletiopsis diazii honoring the contributions of Santiago Díaz-Piedrahita in recognition of his vast knowledge of the ...
Mauricio Diazgranados, Luis Roberto Sánchez   +1 more
doaj   +2 more sources

Geography shapes the phylogeny of frailejones (Espeletiinae Cuatrec., Asteraceae): a remarkable example of recent rapid radiation in sky islands [PDF]

PeerJ, 2017
Background The páramo ecosystem, located above the timberline in the tropical Andes, has been the setting for some of the most dramatic plant radiations, and it is one of the world’s fastest evolving and most diverse high-altitude ecosystems.
Mauricio Diazgranados, Janet C. Barber
doaj   +3 more sources

A nomenclator for the frailejones (Espeletiinae Cuatrec., Asteraceae) [PDF]

PhytoKeys, 2012
The páramos and high Andean forests of the tropical Andes are largely dominated by frailejones (Espeletiinae Cuatrec., Asteraceae). These plants are ecologically and culturally essential for both ecosystems and local inhabitants.
Mauricio Diazgranados
doaj   +2 more sources

Cariotipo de Espeletiopsis muiska [PDF]

Revista Mvz Cordoba, 2013
Objetivo. Estudiar el ciclo celular y realizar la descripción cromosómica de Espeletiopsis muiska, utilizando células meristemáticas de ápices radicales obtenidos a través de cultivo in vitro de embriones en medio MS suplementado con AIB.
Héctor Rondón B., Leidy Rache C., José Pacheco M.   +2 more
doaj   +3 more sources

Thermal niche traits of high alpine plant species and communities across the tropical Andes and their vulnerability to global warming

Journal of Biogeography, Volume 47, Issue 2, Page 408-420, February 2020., 2020
Abstract Aim The climate variability hypothesis (CVH) predicts that locations with reduced seasonal temperature variation select for species with narrower thermal ranges. Here we (a) test the CVH by assessing the effect of latitude and elevation on the thermal ranges of Andean vascular plant species and communities, and (b) assess tropical alpine ...
Francisco Cuesta, Carolina Tovar, Luis D. Llambí, William D. Gosling, Stephan Halloy, Julieta Carilla, Priscilla Muriel, Rosa I. Meneses, Stephan Beck, Carmen Ulloa Ulloa, Karina Yager, Nikolay Aguirre, Paul Viñas, Jorge Jácome, David Suárez‐Duque, Wouter Buytaert, Harald Pauli   +16 more
wiley   +1 more source

Composition and Antibacterial Screening of the Essential Oils of Leaves and Roots of Cuatrec

Natural Product Communications, 2007
Hydrodistillation of leaves and roots of Espeletiopsis angustifolia Cuatrec. (Asteraceae) yielded 0.18% and 0.15% essential oils, respectively. GC-MS analysis allowed identification of 24 components, which made up 92.9% of the total oil from the leaves ...
Gina Meccia, Luis B. Rojas, Judith Velasco, Tulia Díaz, Alfredo Usubillaga   +4 more
doaj   +1 more source

Análisis de los ácidos kaurénicos presentes en Espeletiopsis angustifolia Cuatrec. de los Andes venezolanos [PDF]

Avances en Química, 2010
Analysis of kaurenic acids present in Espeletiopsis angustifolia Cuatrec. from the Venezuelan Andes. Leaves of Espeletiopsis angustifolia were collected at paramo of San José de Acequias (Mérida State) at 2870 m.a.s.l.
Juan Carmona, Alfredo Usubillaga, Luis Rojas, Patricia Quintero, Gina Meccia   +4 more
doaj  

Compuestos químicos en los aceites esenciales de Espeletia spp. endémicas de Colombia y evaluación preliminar de su actividad antimicrobiana

Revista Peruana de Biología
En este trabajo se identifican los compuestos químicos presentes en los aceites esenciales de cinco especies de frailejones y se evaluó su actividad biológica frente a diferentes microorganismos.
Doris Gutiérrez Hernández, Diana Carolina Corzo Barragán, Johanna Esperanza Romero Murcia   +2 more
doaj   +1 more source

New Symptoms of the Affectation Syndrome of Frailejones in Colombia

Universitas Scientiarum
Frailejones —endemic plants of high mountain páramo— exhibit morphological changes, which can lead to death. Some of these changes have been regarded as symptoms and are grouped as the Af-fectation Syndrome of Frailejones.
Karlos Osher-Altsjor, Amanda Varela
doaj   +1 more source