Results 21 to 30 of about 565 (129)

Soil properties variation in a small-scale altitudinal gradient of an evergreen foothills forest, Ecuadorian Amazon region

open access: yesEuropean Journal of Forest Research, 2023
Abstract The aim of this study was to evaluate variation in the soil physical and chemical properties in a small-scale elevation gradient at 601 to 1000 m above sea level (m.a.s.l) in an Evergreen Andean-Amazonian forest. The soil sampling was divided into four elevation zones, establishing five permanent monitoring plots (PMP) for each one ...
Carlos Bravo   +6 more
openaire   +1 more source

New Mitogenomic Resources for the <i>Caiman yacare</i> (Daudin, 1802) From Bolivia. [PDF]

open access: yesEcol Evol
New mitochondrial genomes were generated to enhance the mitochondrial genetic resources available for Caiman yacare. Mitochondrial genomes of approximately 16 kb were obtained through genome skimming using Illumina sequencing technology. The assemblies revealed a composition typical of vertebrate mitogenomes, including 13 protein‐coding genes, 2 rRNA ...
Miranda G, Ríos N, Hubert N.
europepmc   +2 more sources

A third species of glassfrog in the genus Chimerella (Anura, Centrolenidae) from central Peru, discovered by an integrative taxonomic approach [PDF]

open access: yesEvolutionary Systematics, 2023
We studied the taxonomic status of glassfrogs collected in Departamento Huánuco, central Peru, which in the field were tentatively allocated to Chimerella, one of the twelve genera currently recognized in the family Centrolenidae.
Jörn Köhler   +5 more
doaj   +3 more sources

Paleopalynology in Colombia: a review

open access: yesRevista de la Academia Colombiana de Ciencias Exactas, Físicas y Naturales, 2023
Palynology is an important tool for establishing age and interpreting paleoenvironments in both continental and marine deposits. This paper provides a summarized overview of the palynological information published for deposits in Colombia ranging from ...
Angelo Plata Torres   +3 more
doaj   +1 more source

Unveiling biogeographical patterns of the ichthyofauna in the Tuichi basin, a biodiversity hotspot in the Bolivian Amazon, using environmental DNA

open access: yesPLoS ONE, 2022
To date, more than 2400 valid fish species have been recorded in the Amazon basin. However, some regions remain poorly documented. This is the case in the Beni basin and in particular in one of its main sub-basins, the Tuichi, an Andean foothills rivers ...
Cédric Mariac   +9 more
doaj   +3 more sources

Untangling the importance of dynamic and thermodynamic drivers for wet and dry spells across the Tropical Andes

open access: yesEnvironmental Research Letters, 2023
Andean vegetation and agriculture depend on the patterns of rainfall during the South American monsoon. However, our understanding on the importance of dynamic (upper-level wind circulation) as compared to thermodynamic (Amazon basin moisture) drivers ...
Cornelia Klein   +5 more
doaj   +1 more source

Sediment budget in the Ucayali River basin, an Andean tributary of the Amazon River [PDF]

open access: yesProceedings of the International Association of Hydrological Sciences, 2015
Formation of mountain ranges results from complex coupling between lithospheric deformation, mechanisms linked to subduction and surface processes: weathering, erosion, and climate. Today, erosion of the eastern Andean cordillera and sub-Andean foothills
W. Santini   +16 more
doaj   +1 more source

La "gente de la lengua del inga" en el piedemonte amazónico colombiano

open access: yesMaguaré, 2006
El presente artículo trata del uso del quechua entre las poblaciones in- dígenas del piedemonte amazónico colombiano, en especial en los pueblos de habla inga en el valle de Sibundoy y en la jurisdic- ción de Ágreda o Mocoa: Yunguillo, Condagua y Puerto ...
Augusto Javier Gómez López
doaj   +4 more sources

First records of the Rufous-headed woodpecker (Celeus spectabilis: Picidae) in Colombia

open access: yesActa Biológica Colombiana, 2016
We present the first records of the Rufous-headed Woodpecker (Celeus spectabilis) for Colombia, based upon a two adults photographed in southeastern Cauca Department, which extend the known range of the species by more than 170 km.
Diego Carantón Ayala   +2 more
doaj   +1 more source

Lexically driven patterns of contact in alignment systems of languages of the northern Upper Amazon

open access: yesOpen Linguistics, 2023
Despite ample attention in the literature for alignment patterns and case frames more generally, we know very little about how these elements of grammar spread from one language to another in a contact situation.
van Gijn Rik   +5 more
doaj   +1 more source

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