Results 21 to 30 of about 2,307 (204)

Thermal tolerance of tropical and temperate alpine plants suggests that ‘mountain passes are not higher in the tropics’

Global Ecology and Biogeography, Volume 32, Issue 7, Page 1073-1086, July 2023., 2023
Abstract Aim Tolerance of species to extreme temperatures largely determines their distribution and vulnerability to climate change. We examined thermal tolerance in tropical and temperate alpine plants, testing the hypotheses that: (a) temperate plants are resistant to more extreme temperatures and have an overall wider thermal tolerance breadth (TTB);
Petr Sklenář, Ricardo Jaramillo, Susanne Sivila Wojtasiak, Rosa Isela Meneses, Priscilla Muriel, Adam Klimeš   +5 more
wiley   +1 more source

Measurement of actual evapotranspiration in a páramo ecosystem using portable closed chambers: Comparison between giant rosettes, tussock grasses and shrubs

Ecohydrology, Volume 16, Issue 4, June 2023., 2023
Abstract The páramos are Neotropical alpine tundra‐like ecosystems that play a crucial role as biodiversity hotspots and also act as water sources for the inter‐Andean regions and cities. Improving our understanding of hydrological processes, here evapotranspiration, is crucial, especially in the context of global changes.
Barbara Meyers, María Elena Gutiérrez‐Lagoueyte, Conrado Tobón   +2 more
wiley   +1 more source

The Nature of Espeletia Species [PDF]

, 2020
Abstract Species are often regarded as basic units of study in biology, following the presumption that they are real and discrete natural entities. But several biologists wonder if species are arbitrary divisions that do not correspond to discrete natural groups of organisms. Two issues must be addressed to solve this
Yam M. Pineda, Andrés J. Cortés, Santiago Madriñán, Iván Jiménez   +3 more
openaire   +1 more source

Assessment of Image-Texture Improvement Applied to Unmanned Aerial Vehicle Imagery for the Identification of Biotic Stress in Espeletia. Case Study: Moorlands of Chingaza (Colombia)

Ciencia e Ingeniería Neogranadina, 2019
Espeletia is one of the most representative endemic species of moorland ecosystems, and is currently being affected by biotic stress. Meanwhile, the analysis of images obtained by means of unmanned aerial vehicle imagery has proved its usefulness in ...
Laura Daniela Martín, Javier Medina, Erika Upegui   +2 more
doaj   +1 more source

Adaptation and Convergent Evolution within the Jamesonia-Eriosorus Complex in High-Elevation Biodiverse Andean Hotspots [PDF]

, 2014
The recent uplift of the tropical Andes (since the late Pliocene or early Pleistocene) provided extensive ecological opportunity for evolutionary radiations.
A Cosacov, AF Tryon, AF Tryon, AJ Drummond, AJ Drummond, AP Smith, AT Cochran, B Sidlauskas, BG Baldwin, C Hughes, CD Bell, DM Johnson, EE Goldberg, EH Zacharias, F Meinzer, F Rada, GA Miller, Gavin H. Thomas, GH Thomas, GH Thomas, GH Thomas, H Hooghiemstra, HM Cabrera, HM Cabrera, J Heled, JB Yoder, JE Keeley, JT Rauscher, LJ Revell, M Monasterio, M Pagel, M Pagel, M Pagel, MD Logacheva, MJ Donoghue, N Myers, N Wikström, NM Nürk, O Hedberg, P Sklenář, P Sánchez-Baracaldo, P Sánchez-Baracaldo, Patricia Sánchez-Baracaldo, PG Wolf, PJ de Lange, PO Lewis, R Karl, R Lanfear, RG FitzJohn, RJ Burnham, RS Jabaily, RT Pennington, S Madriñán, Simon Joly, T Van der Hammen, T Van der Hammen, von Hagen Bernhard, WP Maddison   +57 more
core   +4 more sources

Fragmocirrus espeletiae Foissner 2000

, 2020
Fragmocirrus espeletiae Foissner, 2000 Distribution. MEXICO: El Tegolome, near the town of Tlanchinol (ps), (Ts). VENEZUELA: South margin of the Henri Pittier National Park, Biological Station Rancho Grande (Foissner 2016).
Durán-Ramírez, Carlos Alberto, Dias, Roberto Júnio Pedroso, Estrada, Rosaura Mayén-   +2 more
openaire   +2 more sources

Climate Vulnerability Assessment of the Espeletia Complex on Páramo Sky Islands in the Northern Andes

Frontiers in Ecology and Evolution, 2020
Some of the largest impacts of climate change are expected in the environmentally heterogeneous and species rich high mountain ecosystems. Among those, the Neotropical alpine grassland above the tree line (c.
Jhon B. Valencia, Jhon B. Valencia, Jeison Mesa, Juan G. León, Santiago Madriñán, Santiago Madriñán, Andrés J. Cortés, Andrés J. Cortés   +7 more
doaj   +1 more source

Propagación de Espeletiopsis corymbosa, Espeletia barclayana, Espeletia summapacis y Espeletia killipii en condiciones de invernadero

Revista de la Academia Colombiana de Ciencias Exactas, Físicas y Naturales, 2020
Colombia cuenta con ecosistemas estratégicos, entre ellos los páramos ubicados por encima de los 3.000 ms.n.m. Estos ecosistemas se encuentran en riesgo debido a las actividades humanas. Con el fin de contribuir a la conservación de los frailejones, plantas características de los páramos, se generaron protocolos de propagación de Espeletiopsis ...
openaire   +2 more sources

Descifrando la flora de Bogotá y entendiendo la expedición de Mutis: el aporte de Santiago Díaz Piedrahita [PDF]

, 2015
Peer ...
Fernández Alonso, José Luis
core   +1 more source

PhytoKeys at 100: progress in sustainability, innovation, and speed to enhance publication in plant systematics [PDF]

, 2018
The file attached is the Published/publisher’s pdf version of the article.This is an open access article distributed under the terms of the Creative Commons Attribution License (CC BY 4.0), which permits unrestricted use, distribution, and reproduction ...
Knapp, S, Kress, WJ, Penev, L, Stoev, P
core   +2 more sources