Results 21 to 30 of about 57,136 (207)
Abstract The tropical Andes are one of the most important biodiversity hotspots on Earth, yet our understanding of how their biotas have responded to Quaternary climatic oscillations is extraordinarily limited and the alternative models proposed to explain their demographic dynamics have been seldom formally evaluated. Here, we test the hypothesis that
Joaquín Ortego +5 more
wiley +1 more source
Does sexual conflict contribute to the evolution of novel warning patterns?
Why warning patterns are so diverse is an enduring evolutionary puzzle. Because predators associate particular patterns with unpleasant experiences, an individual’s predation risk should decrease as the local density of its warning pattern increases, promoting pattern monomorphism.
Alexander E. Hausmann +8 more
wiley +1 more source
Length‐weight relationships (LWR) were described for 53 species of shallow‐water fish caught with bottom trawls in a depth range between 7.3 and 108.1 m during September 2013 in the Colombian Caribbean Sea (fishing area 31 of the FAO). A linear regression was performed using the logarithmically transformed data to calculate a and b coefficients and ...
Alfredo Rodriguez +3 more
wiley +1 more source
Species with large distributions provide unique opportunities to test how geography has influenced biotic diversification. In this work, we aimed to explore the effect of geographic barriers on the distribution of the phenotypic and genetic variation of a spider species that is widespread in continental and insular America.
Fabian C. Salgado-Roa +6 more
wiley +1 more source
Abstract Bats in the family Phyllostomidae exhibit great diversity in skull size and morphology that reflects the degree of resource division and ecological overlap in the group. In particular, the subfamily Stenodermatinae has high morphological diversification associated with cranial and mandibular traits that are associated with the ability to ...
Leidy Viviana García‐Herrera +6 more
wiley +1 more source
Abstract Wildfires have increased in protected areas (PAs) of the Colombian Amazon following the 2016 peace agreement between the Government and the Revolutionary Armed Forced of Colombia (FARC—Spanish acronym). Recent study efforts to understand this issue suffer from data scarcity and limited consultation of local stakeholder perspectives on factors ...
Charlie Arthur Tebbutt +6 more
wiley +1 more source
Adding leaves to the Lepidoptera tree: capturing hundreds of nuclear genes from old museum specimens
A target enrichment kit and workflow to sequence and process hundreds to thousands of loci for recent and old Lepidoptera specimens is presented. Taxa are added to the Lepidoptera phylogeny based on museum specimens collected between 1892 and 2017. Lepidoptera systematic relationships are discussed.
Christoph Mayer +5 more
wiley +1 more source
Análisis de los tiempos para el otorgamiento de la licencia ambiental en Colombia
Con la expedición del Decreto Ley 2811 de 1974, actual Código de Recursos Naturales Renovables, se dio gran importancia a todo lo que tiene que ver con la conservación de los Recursos Naturales Renovables y el Medio Ambiente, la relación sociedad ...
Carlos Alberto Zárate Yepes +3 more
doaj +1 more source
Patterns and drivers of water quality changes associated with dams in the Tropical Andes [PDF]
The Tropical Andes is a biodiversity hotspot facing pressure from planned and ongoing hydropower development. However, the effects of dams on the region's river ecosystems, as mediated by physicochemical changes in the water quality, are poorly known ...
R. S. Winton +12 more
doaj +1 more source
Del déficit garantista de la Ley 1333 de 2009 y el decreto 2041 de 2014, frente a la nueva modalidad de explotación de hidrocarburos denominada “Fracking” [PDF]
Artículo de investigaciónLa investigación aborda el debate actual que se presenta en el país por la pretensión de las empresas petroleras de adelantar actividades de explotación denominada fracking.
Medina-Ramírez, Blanca Paola
core +1 more source

