Results 51 to 60 of about 755 (165)

Bryconamericus macarenae n. sp. (Characiformes, Characidae) from the Güejar River, Macarena mountain range, Colombia [PDF]

Animal Biodiversity and Conservation, 2010
Based on 174 specimens, using morphometric, meristic and osteological characters, we describe a new species: Bryconamericus macarenae from the Güejar River in La Macarena mountain range, Orinoco Basin, Colombia.
Román-Valencia, C., García-Alzate, C., Ruiz-C., R. I., Taphorn B., D. C.   +3 more
doaj  

Clarifying nomenclatural uncertainties in Jupunba (Caesalpinioideae, Leguminosae)

Nordic Journal of Botany, Volume 2026, Issue 5, May 2026.
Molecular phylogenetic studies have prompted substantial revisions in the systematics of the former genus Abarema, resulting in the reinstatement of the genera Punjuba and Jupunba, and a re‐circumscription of Abarema. Despite these advances, some taxa still require nomenclatural adjustments to reflect monophyletic lineages.
Ethiéne Guerra, Marcos Vinicius Batista Soares, Marli Pires Morim, João Ricardo Vieira Iganci   +3 more
wiley   +1 more source

Lista de los mamíferos de la cuenca del río Orinoco

Biota Colombiana, 2009
A binational checklist of the mammal fauna from the Orinoco river basin is consolidated, reporting 318 species distributed across 12 orders, 40 families and 156 genera. This diversity represents the 76,8 % of the mammal species of Venezuela and the 68,7 %
Arnaldo Ferrer Pérez, Marisol Beltrán, Angélica Paola Díaz-Pulido, Fernando Trujillo, Hugo Mantilla-Meluk, Olga Herrera, Andrés Felipe Alfonso, Esteban Payán   +7 more
doaj   +1 more source

Flux and Isotopic Composition of Sedimentary Carbon Subducting Along the World's Trenches

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 5, May 2026.
Abstract Here we provide comprehensive estimates for the subducted sedimentary flux of inorganic and organic carbon and δ13C at 16 trench segments worldwide. Our calculations provide minimum (incoming sediment), maximum (trench fill) and best estimates (underthrust) of carbon fluxes.
Terry Plank, Alberto Malinverno
wiley   +1 more source

Lista de los crustáceos decápodos de la cuenca del río Orinoco (Colombia-Venezuela)

Biota Colombiana, 2009
Based on Colombia and Venezuela's biological collections, and on a recent literature review, this is the first consolidated species list of decapod crustaceans for the Orinoco river basin.
Guido Pereira, Carlos A. Lasso, Julián Mora-Day, Célio Magalhães, Mónica A. Morales-Betancourt, Marta Campos   +5 more
doaj   +1 more source

Seasonal Patterns of the Caribbean Current and Its Influence on the Small Island of Curaçao

Journal of Geophysical Research: Oceans, Volume 131, Issue 5, May 2026.
Abstract Large‐scale ocean currents exhibit spatial and temporal variability that can influence local circulation patterns, particularly around small islands. Two distinct flow regimes were previously identified around the southern Caribbean island of Curaçao: (a) strong northwestward flow, and (b) cyclonic eddies or low‐energy conditions ...
Vesna Bertoncelj, Furu Mienis, Erik van Sebille   +2 more
wiley   +1 more source

The Flooding Gradient Affects Seed Dispersal by Fruit‐Eating Fishes in Amazonian Whitewater Floodplain Forests

Biotropica, Volume 58, Issue 3, May 2026.
This research approaches the interaction between frugivorous fish and the flooded forests in the central Amazon. We evaluated the fruit consumption by fish and the seed dispersal potential along the flood gradient. We tested the hypothesis that the role of fish as seed dispersers varies between low várzea (LV) and high várzea (HV) forests.
Gilvan Costa, Sandra Bibiana Correa, Florian Wittmann, Jochen Schöngart, Maria Teresa Fernandez Piedade, Efrem Jorge Ferreira, Leonardo Maltchik   +6 more
wiley   +1 more source

South American Mesoscale Convective Systems: Present and Future Climates

Journal of Geophysical Research: Atmospheres, Volume 131, Issue 7, 16 April 2026.
Abstract This study investigates the mesoscale convective systems (MCSs) over South America in a future climate using two distinct modeling approaches: the Weather Research and Forecasting (WRF) regional model with dynamical downscaling and pseudoglobal warming, and the Nonhydrostatic Icosahedral Atmospheric Model (NICAM) global cloud‐resolving model ...
Amanda Rehbein, Tercio Ambrizzi, Andreas F. Prein   +2 more
wiley   +1 more source

Dispersal and delimitation: Phylogenomics of Connaraceae prompts revised generic delimitation in Cnestideae and reveals global biogeographic patterns

TAXON, Volume 75, Issue 2, April 2026.
Abstract The tempo and mode of assembly of the world's most diverse, tropical floras remain poorly known. Evolutionary relationships within pantropical plant clades such as Connaraceae (Oxalidales, ca. 220 species) offer an opportunity to address this issue.
Serafin J.R. Streiff, Jurriaan M. de Vos
wiley   +1 more source

Two new cis-Andean species of the South American catfish genus Megalonema allied to trans-Andean Megalonema xanthum, with description of a new subgenus (Siluriformes: Pimelodidae)

Neotropical Ichthyology
A revised diagnosis of the pimelodid catfish genus Megalonema is given based on synapomorphic features of the Weberian complex and gas bladder. Megalonema xanthum from the Magdalena River is redescribed.
John G. Lundberg, Wasila M. Dahdul
doaj   +1 more source