The viability of two populations of the terrestrial orchid Cyclopogon luteoalbus in a fragmented tropical mountain cloud forest: Dormancy delays extinction

2014 ◽  
Vol 170 ◽  
pp. 162-168 ◽  
Author(s):  
Lilian Juárez ◽  
Carlos Montaña ◽  
Miguel Franco
Keyword(s):  
Cloud Forest ◽  
Terrestrial Orchid ◽  
Tropical Mountain ◽  
Two Populations

Climate-growth relationships of Pinus pseudostrobus from a tropical mountain cloud forest in northeast Mexico

2020 ◽  
Vol 64 ◽  
pp. 125749
Author(s):  
Genaro Gutiérrez-García ◽  
Laura E. Beramendi-Orosco ◽  
Kathleen R. Johnson
Keyword(s):  
Cloud Forest ◽  
Tropical Mountain ◽  
Pinus Pseudostrobus

On the Need for a System of Cloud-forest Parks in Middle America and the Caribbean

1978 ◽  
Vol 5 (3) ◽  
pp. 183-190 ◽  
Author(s):  
Anne LaBastille ◽  
Douglas J. Pool
Keyword(s):  
New World ◽  
Cloud Forest ◽  
Tropical Mountain ◽  
Middle America ◽  
The Caribbean ◽  
Mountain Vegetation ◽  
High Precipitation ◽  
Forest Parks

Tropical New World cloud-forest may best be described as the area of persistent cloud contact with tropical mountain vegetation. Cloud-forest exists in at least five life-zones, being characterized, generally speaking, by having high precipitation and humidity, dripping moisture, continuous cloud or mist cover, absence of frost, and trees laden with mosses and epiphytes.

scholarly journals Genomic signatures of rapid adaptive divergence in a tropical montane species

2021 ◽  
Vol 17 (7) ◽  
pp. 20210089
Author(s):  
Per G. P. Ericson ◽  
Martin Irestedt ◽  
Huishang She ◽  
Yanhua Qu
Keyword(s):  
Environmental Heterogeneity ◽  
Adaptive Divergence ◽  
Glacial Cycles ◽  
Genomic Signatures ◽  
Tropical Mountain ◽  
Population Genomic ◽  
Allopatric Divergence ◽  
Suitable Habitats ◽  
Genomic Regions ◽  
Two Populations

Mountain regions contain extraordinary biodiversity. The environmental heterogeneity and glacial cycles often accelerate speciation and adaptation of montane species, but how these processes influence the genomic differentiation of these species is largely unknown. Using a novel chromosome-level genome and population genomic comparisons, we study allopatric divergence and selection in an iconic bird living in a tropical mountain region in New Guinea, Archbold's bowerbird ( Amblyornis papuensis ). Our results show that the two populations inhabiting the eastern and western Central Range became isolated ca 11 800 years ago, probably because the suitable habitats for this cold-tolerating bird decreased when the climate got warmer. Our genomic scans detect that genes in highly divergent genomic regions are over-represented in developmental processes, which is probably associated with the observed differences in body size between the populations. Overall, our results suggest that environmental differences between the eastern and western Central Range probably drive adaptive divergence between them.

scholarly journals Spiders (Arachnida: Araneae) of the tropical mountain cloud forest from El Triunfo Biosphere Reserve, Mexico

2019 ◽  
Vol 35 ◽  
pp. 1-19
Author(s):  
Emmanuel Franco Campuzano Granados ◽  
Guillermo Ibarra Núñez ◽  
José Francisco Gómez Rodríguez ◽  
Gabriela Guadalupe Angulo Ordoñes
Keyword(s):  
Cloud Forest ◽  
Biosphere Reserve ◽  
Tropical Mountain

Diversity and seasonal variation of ground and understory spiders from a tropical mountain cloud forest

2019 ◽  
Vol 27 (4) ◽  
pp. 826-844 ◽  
Author(s):  
Emmanuel F. Campuzano ◽  
Guillermo Ibarra‐Núñez ◽  
Salima Machkour‐M´Rabet ◽  
Alejandro Morón‐Ríos ◽  
María Luisa Jiménez
Keyword(s):  
Seasonal Variation ◽  
Cloud Forest ◽  
Tropical Mountain

scholarly journals Bat-Fruit Interactions Are More Specialized in Shaded-Coffee Plantations than in Tropical Mountain Cloud Forest Fragments

PLoS ONE ◽  
2015 ◽  
Vol 10 (5) ◽  
pp. e0126084 ◽  
Author(s):  
Jesús R. Hernández-Montero ◽  
Romeo A. Saldaña-Vázquez ◽  
Jorge Galindo-González ◽  
Vinicio J. Sosa
Keyword(s):  
Cloud Forest ◽  
Forest Fragments ◽  
Coffee Plantations ◽  
Tropical Mountain

Comparison of Principal Component Solutions in Two Populations

Methodology ◽  
2016 ◽  
Vol 12 (1) ◽  
pp. 11-20 ◽  
Author(s):  
Gregor Sočan
Keyword(s):  
Simulation Study ◽  
Principal Components ◽  
Common Factor ◽  
Principal Component ◽  
Component Model ◽  
Bootstrap Procedure ◽  
Factor Loadings ◽  
Component Loadings ◽  
Principal Component Model ◽  
Two Populations

Abstract. When principal component solutions are compared across two groups, a question arises whether the extracted components have the same interpretation in both populations. The problem can be approached by testing null hypotheses stating that the congruence coefficients between pairs of vectors of component loadings are equal to 1. Chan, Leung, Chan, Ho, and Yung (1999) proposed a bootstrap procedure for testing the hypothesis of perfect congruence between vectors of common factor loadings. We demonstrate that the procedure by Chan et al. is both theoretically and empirically inadequate for the application on principal components. We propose a modification of their procedure, which constructs the resampling space according to the characteristics of the principal component model. The results of a simulation study show satisfactory empirical properties of the modified procedure.

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