Results 11 to 20 of about 1,345 (168)

Evidencia morfológica de hibridación entre las subespecies de Ramphocelus flammigerus (Passeriformes: Thraupidae) en Colombia Morphological evidence of hybridization between Ramphocelus flammigerus subspecies (Passeriformes: Thraupidae) in Colombia

Revista de Biología Tropical, 2012
Las modificaciones de los hábitats naturales, tales como la deforestación y el incremento de las actividades agrícolas, han conducido a interacciones faunísticas inusuales.
M. Juliana Bedoya, Oscar E. Murillo G
doaj   +9 more sources

Non-Native Plants Alter Bird-Plant Frugivory Network Structure in a Human-Modified Tropical Landscape. [PDF]

Ecol Evol
DNA metabarcoding of faecal samples from 21 frugivorous bird species in Gamboa, Panama, was used to assess how non‐native plants influence frugivory network structure. Non‐native species, though comprising only 28% of plants, reduced nestedness, increased connectance and modularity, and caused disproportionately high secondary bird extinctions while ...
Fell A, Bello C, Duthie AB, Vargas M, Skeffington A, Saltonstall K, Dent DH.   +6 more
europepmc   +2 more sources

Trophic position determines the persistence of neotropical understory birds after forest disturbance. [PDF]

Ecol Evol
We studied whether an understory bird species' trophic position or niche width determines its persistence after forest disturbance in the Pacific lowlands of Costa Rica. Using stable isotope methodology, we found a significant effect of trophic position: Species feeding at low trophic levels in old‐growth forests were less likely to persist in ...
Paces B, Wanek W, Voigt CC, Schirmer S, Leidinger P, Schulze CH.   +5 more
europepmc   +2 more sources

Multiple Pathways to Red Carotenoid Coloration: House Finches (Haemorhous mexicanus) Do Not Use CYP2J19 to Produce Red Plumage. [PDF]

Mol Ecol
ABSTRACT The carotenoid‐based colours of birds are a celebrated example of biological diversity and an important system for the study of evolution. Recently, a two‐step mechanism, with the enzymes cytochrome P450 2J19 (CYP2J19) and 3‐hydroxybutyrate dehydrogenase 1‐like (BDH1L), was described for the biosynthesis of red ketocarotenoids from yellow ...
Koch RE, Truong CN, Reeb HR, Joski BH, Hill GE, Zhang Y, Toomey MB.   +6 more
europepmc   +2 more sources

FOGS: A SNPSTR Marker Database to Combat Wildlife Trafficking and a Cell Culture Bank for Ex-Situ Conservation. [PDF]

Mol Ecol Resour
ABSTRACT Illegal wildlife trade is a growing problem internationally. Poaching of animals not only leads to the extinction of populations and species but also has serious consequences for ecosystems and economies. This study introduces a molecular marker system that authorities can use to detect and substantiate wildlife trafficking.
Mozer A, Di-Nizo CB, Consul A, Huettel B, Jäger R, Akintayo A, Erhardt C, Fenner L, Fischer D, Forat S, Gimnich F, Grobe P, Martin S, Nathan V, Saeed A, von der Mark L, Woehle C, Olek K, Misof B, Astrin JJ.   +19 more
europepmc   +2 more sources

Effects of forest fragmentation on avian breeding activity

Conservation Biology, Volume 37, Issue 4, August 2023., 2023
Abstract Biodiversity declines and ecosystem decay follow forest fragmentation; initially, abundant species may become rare or be extirpated. Underlying mechanisms behind delayed extirpation of certain species following forest fragmentation are unknown.
Charles P. J. Coddington, W. Justin Cooper, David A. Luther   +2 more
wiley   +1 more source

Acoustic animal identification using unsupervised learning

Methods in Ecology and Evolution, Volume 14, Issue 6, Page 1500-1514, June 2023., 2023
Abstract Passive acoustic monitoring is usually presented as a complementary approach to monitoring wildlife communities and assessing ecosystem conditions. Automatic species detection methods support biodiversity monitoring and analysis by providing information on the presence–absence of species, which allows understanding the ecosystem structure ...
Maria J. Guerrero, Carol L. Bedoya, José D. López, Juan M. Daza, Claudia Isaza   +4 more
wiley   +1 more source

Feather function and the evolution of birds

Biological Reviews, Volume 98, Issue 2, Page 540-566, April 2023., 2023
ABSTRACT The ability of feathers to perform many functions either simultaneously or at different times throughout the year or life of a bird is integral to the evolutionary history of birds. Many studies focus on single functions of feathers, but any given feather performs many functions over its lifetime. These functions necessarily interact with each
Ryan S. Terrill, Allison J. Shultz
wiley   +1 more source

Forest structure predicts species richness and functional diversity in Amazonian mixed‐species bird flocks

Biotropica, Volume 55, Issue 2, Page 467-479, March 2023., 2023
We show that vegetation structure can predict species richness and functional diversity in Amazonian mixed‐species flocks in primary and secondary forests. In addition, we show that secondary forest flocks retain a large percentage of the functional diversity exhibited by their primary forest counterparts. Abstract Secondary forest has the potential to
Charles P. J. Coddington, W. Justin Cooper, Karl Mokross, David A. Luther   +3 more
wiley   +1 more source

Avian ecological succession in the Amazon: A long-term case study following experimental deforestation. [PDF]

Ecol Evol, 2019
We examined how nonprimary forest birds colonized a large‐scale deforestation experiment in the central Amazon across nearly 40 years, focusing on two roads that may act as corridors to facilitate species' arrivals. A disproportionate number of widespread generalists associated with secondary forest colonized quickly following deforestation, but these ...
Rutt CL, Jirinec V, Cohn-Haft M, Laurance WF, Stouffer PC.   +4 more
europepmc   +2 more sources