Browsing Articulos, Pre-prints (Instituto de Ciencias Ambientales y Ecológicas (ICAE)) by Author "García Nuñez, Carlos"
Now showing items 1-20 of 21
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Carbon and water balance in polylepis sericea, a tropical tree-line species
Rada R., Fermin J.; Azócar, Aura; González, J.; Briceño, Benito E.; García Nuñez, Carlos (1996) -
Cold resistance mechanisms in high desert Andean plants
Squeo, F. A.; Rada R., Fermin J.; García Nuñez, Carlos; Ponce, Manuel; Rojas, A.; Azócar, Aura (1996) -
Coupling soil water and shoot dynamics in three grass species: A spatial stochastic model on water competition in Neotropical savanna
Segarra, J.; Acevedo, Miguel F.; Raventos, José; García Nuñez, Carlos; Silva Armas, Juan F. (Ecological Modelling 220: 2734 - 2743, Países Bajos, 2009-10-24)Savannas are ecosystems known for their high environmental and economic value. They cover at least 20% of the global land surface and, in some cases, can act as a boundary between tropical rainforest and deserts.Water is ... -
Distribution of juveniles of tree species along a canopy closure gradientin a tropical cloud forest of the Venezuelan Andes
Quevedo R., Ana Mercedes; Jeréz R., Mauricio; Schwarzkopf Kratzer, Teresa; García Nuñez, Carlos (iForest, 2015-07-31)Cloud forests represent a minor portion of the world forests, though outstanding in terms of biodiversity, endemisms, and environmental services provided. Understanding the factors that drive the regeneration and species ... -
Fruit, seed production and size structure in some evergreen tree species of the Venezuelan savannas
García Nuñez, Carlos; Azócar, Aura; Silva Armas, Juan F. (1996) -
Functional characterisitcs of the arborescent genus Polylepis along a latitudinal gradient in the high Andes
Azócar, Aura; Rada R., Fermin J.; García Nuñez, Carlos (Interciencia 32(10): 663-668, Venezuela, 2007-09)Polylepis is a genus restricted to the Andean Mountain Range, naturally occurring above the upper continuous forest limit. The purpose of this work was to integrate and compare functional characteristics in terms of water ... -
Gas exchange and low temperature resistance in two tropical high mountain tree species from the Venezuelan Andes
Cavieres, L.; Rada R., Fermin J.; Azócar, Aura; García Nuñez, Carlos; Cabrera, Maira (2000) -
Leaf gas exchange and water relations in Polylepis tarapacana at extreme altitudes in the Bolivian Andes
García Nuñez, Carlos; Rada R., Fermin J.; Boero, C.; González, J.; Gallardo, M.; Azócar, Aura; Liberman Cruz, M.; Hilal, M.; Prado, F. (2004) -
Leaf gas exchange in canopy species of a Venezuelan cloud forest
Rada R., Fermin J.; García Nuñez, Carlos; Ataroff Soler, Michele (Biotropica 41(6): 659-664, Venezuela, 2009-11)Tropical cloud forests are considered humid ecosystems with frequent cloud cover down to the ground surface. However, seasonal variation in precipitation may induce short-term water stress. For canopy leaves, this water ... -
Low temperature resistance in Polylepis tarapacana, a tree growing at the highest altitudes in the world
Rada R., Fermin J.; García Nuñez, Carlos; Boero, C.; Gallardo, M.; Hilal, M.; González, J.; Prado, F.; Liberman Cruz, M.; Azócar, Aura (2001) -
Low temperature resistance in saplings and ramets of Polylepis sericea in the Venezuelan Andes
Rada R., Fermin J.; García Nuñez, Carlos; Rangel, Sairo (Acta Oecologica 35(5): 610–613, Países Bajos, 2009-10)The frequent occurrence of all year-round below zero temperatures in tropical high mountains constitutes a most stressful climatic factor that plants have to confront. Polylepis forests are found well above the continuous ... -
Modelling competitive ability of neotropical savanna grasses: Simulation of shading and drought impacts on biomass production
Segarra, J.; Raventos, José; Acevedo, Miguel F.; Silva Armas, Juan F.; García Nuñez, Carlos (Ecological Informatis 13: 57-69, España, 2013)In this paper, we develop a technique to model the spatial distribution of shoots along vertical and horizontal dimensions of a plant community. We use it to simulate the growth of a tropical savanna near the city of ... -
Photosynthetic acclimation to light in juveniles of two cloud forest tree species
Azócar, Aura; García Nuñez, Carlos; Rada R., Fermin J. (TREES 10: 114-124, 1995) -
Relaciones hídricas e intercambio de gases en Theobroma cacao var. Guasare bajo períodos de déficit hídrico
Rada R., Fermin J.; Jaimez, Ramón; García Nuñez, Carlos; Azócar, Aura; Ramírez Rojas, Marvelis E. (2005)Se evaluó las relaciones hídricas y el intercambio de gases en Theobroma cacao var. Guasare bajo períodos de déficit hídrico. Se midieron las variables microclimáticas (temperatura del aire, humedad relativa y radiación ... -
Seasonal gas exchange and water relations in juveniles of two evergreen neotropical savanna tree species with contrasting regeneration strategies
García Nuñez, Carlos; Azócar, Aura; Rada R., Fermin J. (Trees 25(3): 473-483, Venezuela, 2011)Colonization dynamics of woody species into grasslands in Neotropical savannas are determined by two main factors: plant-available moisture and fire. Considering seasonality of precipitation and high fire frequency in these ... -
Seasonal variations in leaf gas exchange of platain cv. Hartón (Musa AAB) under different soil water conditions in a himid tropical region
Jaimez, Ramón; Rada R., Fermin J.; García Nuñez, Carlos; Azócar, Aura (2005)The seasonal effect of soil water availability on leaf gas exchange of plantain plants cv. Hartón growing on two different texture soils (loamy and clayey) were evaluated. Soil water deficits corresponded to 48, 24 and 4 ... -
Seed dispersal in Palicourea rigida H.B.K, a common treelet species from neotropical savannas
Wütherich, Dirk; Azócar, Aura; García Nuñez, Carlos; Silva Armas, Juan F. (2001)The dispersal system of Palicourea rigida (Rubiaceae), a common woody species of neotropical savannas, was studied in a seasonal Venezuelan savanna. Production and consumption of fruits, dispersal agents, feeding ... -
Seed dispersal in Palicourea rigida, a common treelet species from neotropical savannas
Silva Armas, Juan F.; Azócar, Aura; García Nuñez, Carlos; Wütherich, Dirk (SABER ULA, 2005-01-26)Seed dispersal in Palicourea rigida, a common treelet species from neotropical savannas (Wütherich, Dirk † ; Azócar, Aura; García, Nuñez, Carlos and Silva, Juan F. ) Abstract The dispersal system of Palicourea ... -
Seed production and soil seed bank in three evergreen woody species from a neotropical savanna
Silva Armas, Juan F.; Azócar, Aura; García Nuñez, Carlos (SABER ULA, 2001)Seed production and soil seed bank in three evergreen woody species from a neotropical savanna (Azócar, Aura; García, Nuñez, Carlos and Silva, Juan F. ) Abstract Results of a 3-y study on the populations of three ... -
Selvas y bosques nublados de Venezuela
Ataroff Soler, Michele; García Nuñez, Carlos (Medina, E., Huber, O., Nassar, J., Navarro, P. Recorriendo el paisaje vegetal en Venezuela. Ediciones IVIC, Instituto Venezolano de Investigaciones Científicas. Caracas, Venezuela. pp. 125-155, Venezuela, 2013)