Temporal Variation in Birds and Fruits Along an Elevational Gradient in Costa Rica

Ecology ◽  
1991 ◽  
Vol 72 (1) ◽  
pp. 180-193 ◽  
Author(s):  
Bette A. Loiselle ◽  
John G. Blake
Keyword(s):  
Costa Rica ◽  
Temporal Variation ◽  
Elevational Gradient

scholarly journals Topography and Three-Dimensional Structure Can Estimate Tree Diversity along a Tropical Elevational Gradient in Costa Rica

2018 ◽  
Vol 10 (4) ◽  
pp. 629 ◽  
Author(s):  
Chelsea Robinson ◽  
Sassan Saatchi ◽  
David Clark ◽  
Johanna Hurtado Astaiza ◽  
Anna Hubel ◽  
...  
Keyword(s):  
Costa Rica ◽  
Three Dimensional ◽  
Elevational Gradient ◽  
Tree Diversity ◽  
Dimensional Structure ◽  
Three Dimensional Structure

scholarly journals Spatio-temporal variation in bird assemblages is associated with fluctuations in temperature and precipitation along a tropical elevational gradient

PLoS ONE ◽  
2018 ◽  
Vol 13 (5) ◽  
pp. e0196179 ◽  
Author(s):  
Vinicio Santillán ◽  
Marta Quitián ◽  
Boris A. Tinoco ◽  
Edwin Zárate ◽  
Matthias Schleuning ◽  
...  
Keyword(s):  
Temporal Variation ◽  
Elevational Gradient ◽  
Bird Assemblages ◽  
Temperature And Precipitation ◽  
Spatio Temporal

scholarly journals Microsatellite DNA Evidence for Gene Flow in Neotropical Lek-Mating Long-Tailed Manakins

The Condor ◽  
2003 ◽  
Vol 105 (3) ◽  
pp. 580-586 ◽  
Author(s):  
David B. McDonald
Keyword(s):  
Sexual Selection ◽  
Gene Flow ◽  
Costa Rica ◽  
Clustering Analysis ◽  
Elevational Gradient ◽  
Dna Evidence ◽  
Lek Mating ◽  
Rapid Divergence ◽  
Para Determinar ◽  
Single Cluster

Abstract I genotyped lek-mating Long-tailed Manakins (Chiroxiphia linearis) at Monteverde and Santa Rosa, Costa Rica, 115 km apart. Cavalli-Sforza distance was 0.04, DLR was 0.18, and RST and θ were both 0.02. Bayesian clustering analysis indicated that both populations were part of a single cluster rather than from distinct clusters. I present a binomial test for probability of allelic absence as a function of sample size. Genotypic likelihood tests assigned 50% of Monteverde birds to Santa Rosa, versus 26% of Santa Rosa birds to Monteverde. Two lines of evidence supported the idea of asymmetric gene flow up the elevational gradient from Santa Rosa to Monteverde. Low differentiation at this spatial scale, despite intense sexual selection, suggests that sexual selection alone is unlikely to promote rapid divergence leading to speciation. Reduced gene flow, produced by geographic barriers or behavioral factors, may also be required. Evidencia de Flujo Génico Mediante ADN Microsatelital en Chiroxiphia linearis, un Ave Neotropical con Estrategia Reproductiva Tipo “Lek” Resumen. Determiné el genotipo de individuos de Chiroxiphia linearis en dos poblaciones separadas por 115 km, Monteverde y Santa Rosa en Costa Rica. La distancia de Cavalli-Sforza fue 0.04, DLR fue 0.18, y tanto el valor de RST como el de θ fue 0.02. Un análisis de agrupamiento bayesiano indicó que ambas poblaciones pertenecen a un mismo grupo y no a dos grupos diferentes. Presento una prueba binomial para determinar la probabilidad de ausencia alélica como una función del tamaño muestral. La prueba de probabilidad genotípica asignó al 50% de los individuos de Monteverde a la población de Santa Rosa, mientras que un 26% de los individuos de Santa Rosa fue asignado a Monteverde. Dos líneas de evidencia apoyan la idea de flujo génico asimétrico hacia arriba del gradiente altitudinal entre Santa Rosa y Monteverde. A pesar de la intensa presión selectiva sexual, la baja diferenciación a esta escala espacial sugiere que probablemente la selección sexual por sí sola no promueve la rápida divergencia que conduce a la especiación. También se requeriría reducción del flujo génico a través de barreras geográficas y factores conductuales.

Functional structure and specialization in three tropical plant-hummingbird interaction networks across an elevational gradient in Costa Rica

Ecography ◽  
2015 ◽  
Vol 38 (11) ◽  
pp. 1119-1128 ◽  
Author(s):  
María A. Maglianesi ◽  
Nico Blüthgen ◽  
Katrin Böhning-Gaese ◽  
Matthias Schleuning
Keyword(s):  
Costa Rica ◽  
Elevational Gradient ◽  
Interaction Networks ◽  
Functional Structure ◽  
Tropical Plant

Temporal Variation in Infection Prevalence by the Amphibian Chytrid Fungus in Three Species of Frogs at La Selva, Costa Rica

Biotropica ◽  
2012 ◽  
Vol 44 (6) ◽  
pp. 779-784 ◽  
Author(s):  
Steven M. Whitfield ◽  
Jacob Kerby ◽  
Lydia R. Gentry ◽  
Maureen A. Donnelly
Keyword(s):  
Costa Rica ◽  
Temporal Variation ◽  
Infection Prevalence ◽  
Chytrid Fungus ◽  
La Selva ◽  
Amphibian Chytrid Fungus
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