Results 71 to 80 of about 64,911 (235)

Deconvolving the Effects of Fluvial Transit and Storage on Preservation of Sedimentary Source Signals Using Heavy Minerals and Terrestrial Biomarkers

Basin Research, Volume 38, Issue 1, January–February 2026.
Sediment pathways from source to sink: Organic and clastic sediments are stored and transformed during floodplain transport and deposition, with transport modes shaping signal transmission and sediment alteration. ABSTRACT Analysis of naturally occurring markers of environmental signals, or proxy analysis, in sedimentary records can yield valuable ...
Sophia Dosch, Niels Hovius, Sergio Andò, Eduardo Garzanti, Marisa Repasch, Joel Scheingross, Dirk Sachse   +6 more
wiley   +1 more source

NOTAS BIOLÓGICAS Y TAXONÓMICAS SOBRE LOS ABEJORROS DEL MARACUYÁ DEL GÉNERO Xylocopa (HYMENOPTERA: APIDAE, XYLOCOPINI) EN COLOMBIA

Acta Biológica Colombiana, 2009
RESUMEN Presentamos información sobre los hábitos de nidificación de la abeja carpintera Xylocopa (Neoxylocopa) lachnea en la cordillera Oriental de Colombia.
MARGARITA GONZALES, YURANNY CUELLAR
doaj  

Arquitectura precerámica en la Cordillera de los Andes, Piruru frente a la diversidad de los datos

Anthropologica, 1988
El artículo no presenta resumen.
openaire   +2 more sources

Caracterización agroecológica de suelos con fines de manejo, en la cordillera de los Andes Tropicales

AGRO - ECOLÓGICA, 2018
En los bosques del sur y centro de Bolivia en la Cordillera de los Andes Tropicales, los suelos son de diferente características: en pie de monte tienen mejor aptitud para el uso agrícola que en el sub-andino y andino; en general son considerados ecosistemas frágiles, susceptibles a la erosión hídrica, con una tasa de erosión de 50 t/ha/año hasta 200 t/
Vedulia Coronado, Jorge Orias, Elke Noellemeyer   +2 more
openaire   +1 more source

Movement Strategies of Neotropical Nectarivorous Birds: Insights From High‐Andean Hummingbirds and Flowerpiercers

Biotropica, Volume 58, Issue 1, January 2026.
Nectar is a highly variable, mostly unpredictable resource in tropical mountains. How do nectarivorous birds such as this male Great Sapphirewing cope? Fine‐scaled tracking of hummingbirds and flowerpiercers shows flexibility in daily movement strategies in the high Andes, possibly in response to fluctuating local conditions such as weather and ...
Cristina Rueda‐Uribe, Pedro A. Camargo‐Martínez, Jonathan Espitia, Manuela Lozano‐Rocha, Juan Pablo Ríos, María Ángela Echeverry‐Galvis, Lesley T. Lancaster, Isabella Capellini, Justin M. J. Travis, Alejandro Rico‐Guevara   +9 more
wiley   +1 more source

Late Cretaceous uplift in the Malargüe fold-and-thrust belt (35°S), Southern Central Andes of Argentina and Chile [PDF]

, 2013
The Cordillera de los Andes is the typical example of a subduction-related orogen. Its present topography is the result of post-Miocene uplift, however, Andean compressional deformation and uplift started in the Late Cretaceous, as increasingly ...
Giambiagi, Laura Beatriz, Mescua, Jose Francisco, Ramos, Victor Alberto   +2 more
core   +3 more sources

Strong Variation in Land‐Use Change Impacts on Tropical Avian Phylogenetic Diversity Between Ecoregions Highlights the Need to Sample Large Spatial Scales

Global Change Biology, Volume 32, Issue 1, January 2026.
Forest conversion for agriculture is a major cause of biodiversity loss in the tropics, but its impacts depend on how broadly they are measured. Using data from across Colombia, one of the most biodiverse countries in the world, we examined how deforestation for cattle farming affects the evolutionary history of bird species.
Giovanny Pérez, Simon C. Mills, Jacob B. Socolar, Jose M. Ochoa Quintero, Robert P. Freckleton, Torbjørn Haugaasen, James J. Gilroy, David P. Edwards   +7 more
wiley   +1 more source

A contribution to the moss flora of Ecuador [PDF]

, 1998
An annotated list of new records or otherwise interesting species from Ecuador is presented. The occurrence of rhizoidal tubers is reported for the first time in Anoectangium aestivum, Brachymenium chilense and Bryoerythrophyllum ...
Arts, Theo, Sollman, Philip
core  

Redescripción y consideraciones biogeográfcas de dos especies de Scotobius (Coleoptera: Tenebrionidae) de ambientes montanos del centro de Argentina y Chile Redescription and biogeographic considerations of two species of Scotobius (Coleoptera: Tenebrionidae) from mountain environments of central Argentina and Chile

Revista de la Sociedad Entomológica Argentina, 2012
El género neotropical Scotobius Germar (Tenebrioninae: Scotobiini) comprende 61 especies distribuidas desde el centro de Perú y sur de Brasil hasta el sur de Argentina y Chile.
Violeta A. Silvestro, Rodolfo Carrara, Gustavo E. Flores   +2 more
doaj  

Surplus Populations and Socio‐Ecological Conflicts in Latin America: The Case of the Mapuche Struggle in Southern Chile

Journal of Agrarian Change, Volume 26, Issue 1, January 2026.
ABSTRACT So‐called surplus populations have repeatedly been the focus of critical analyses in recent years. This refers to a large social group that comprises most of the population in the Global South and is characterised by the fact that it is not integrated into the capitalist mode of production to any relevant extent through wage labour.
Jakob Graf
wiley   +1 more source