Results 141 to 150 of about 10,366 (173)

Patrones de dispersión de semillas por aves en perchas en un gradiente altitudinal con alteración antrópica

Acta Biológica Colombiana, 2006
En tres sitios ubicados en un gradiente altitudinal de bosque altoandino sometido a disturbio antrópico, se estudiaron patrones de arribo de semillas dispersadas por aves a perchas en áreas abiertas.
Carlos Alberto Vargas Rincón, Orlando Vargas Ríos   +1 more
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Evaluación comparativa de algunas características limnológicas de seis ambientes leníticos de Colombia

Revista Facultad de Ingeniería Universidad de Antioquia, 2013
Este estudio propuso evaluar algunas características limnológicas de seis ambientes leníticos de Colombia ubicados en un gradiente altitudinal de las regiones Caribe, Andina y Amazónica.
Esnedy Hernández, Néstor Aguirre, Jaime Palacio, John Jairo Ramírez, Santiago R. Duque, Cástor Guisande, Nelson Aranguren, Martha Mogollón   +7 more
doaj  

El glaciar 15 del Antizana, Ecuador : investigaciones glaciologicas 1994-1997 [PDF]

, 1998
Ayabaca, E., Chango, Ramon, Cruz, Alfredo de la, Francou, Bernard, Sémiond, Hubert   +4 more
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Populações de minhocas (abundância e riqueza específica) em um gradiente altitudinal no Pico Caratuva na Serra do Mar do Paraná. [PDF]

, 2014
BROWN, G. G., CARDOSO, G. B. X., FEIJOO, A., NADOLNY, H. S.   +3 more
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Análisis de anillos de crecimiento sobre imágenes digitales usando SIG libre [PDF]

, 2013
Arenas Castro, Salvador, Fernández Haeger, Juan, Jordano Barbudo, Diego   +2 more
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Densidad y riqueza de aves en comunidades nidificantes de la Península Ibérica [PDF]

, 1986
Potti, J.
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Leaf wettability decreases along an extreme altitudinal gradient

Oecologia, 2009
The duration and amount of water captured on leaves and its functional significance is highly varied. Leaf surface wettability influences water absorption, gas exchange, pathogen infection, nutrient leaching, contamination by pollutants, self-cleaning properties and in freezing environments the probability of extrinsic ice nucleation.
Biva, Aryal, Gilbert, Neuner
openaire   +2 more sources

Altitudinal Gradient May Shadow the Effects of Altitudinal Range on Species Diversity

Applied Mechanics and Materials, 2014
Altitudinal range is widely used as a proxy of habitat heterogeneity to explain broad-scale geographical patterns of species diversity. Though altitudinal range is a factors derived from altitudinal gradient, altitudinal range’s effects on species diversity on altitudinal gradient remain little known.
Miao Li, Jian Meng Feng
openaire   +1 more source

Leaf breakdown along an altitudinal stream gradient

Fundamental and Applied Limnology, 1998
Breakdown of alder (Alnus glutinosa) leaf litter was followed in fourteen sampling stations along a 1400 m altitudinal gradient of a 1st to 3rd-order undisturbed stream. Altitudinal patterns of leaf mass loss, nitrogen concentration in the leaves, fungal biomass determined as ergosterol content, and numbers and biomass of shredders and total ...
Fabre, Eric, Chauvet, Eric
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Change of Leaf Morphology along Altitudinal Gradients

Advanced Materials Research, 2013
It is the most effective way to study the effect of global warming on plant morphology by analyzing a plant species on a mount along altitudinal gradients. Altitudinal increase means decrease of temperature and metabolic rate as well. This might affect the leaf morphology greatly. The SEM study reveals that the size of nanopore on the epidermis changes
Hai Yan Kong, Rou Xi Chen, Ji Huan He, Lu Feng Mo   +3 more
openaire   +1 more source