Results 41 to 50 of about 157,290 (280)

Scale variability of atmospheric surface layer fluxes of energy and carbon over a tropical rain forest in southwest Amazonia; 1 diurnal conditions [PDF]

, 2002
The aim of this study is to investigate the low-frequency characteristics of diurnal turbulent scalar spectra and cospectra near the Amazonian rain forest during the wet and dry seasons.
Arlino, P.R.A., Gannabathula, P.S.S.D., Kruijt, B., Manzi, A.O., Randow, C., von, Sá, L.D.A.   +5 more
core   +2 more sources

Early evolution of the gular musculature and its innervation in ray‐finned fishes

The Anatomical Record, EarlyView.
Abstract Gular muscles are an important but often overlooked component of cranial anatomy in bony fishes. They are located on the ventral surface of the head and are derived from the mandibular and hyoid arches. We present a comprehensive review of the gular musculature and its innervation across early diverging actinopterygian lineages. By integrating
Aléssio Datovo, Paulo Presti, George Vita, Murilo N. L. Pastana, Luiz A. W. Peixoto   +4 more
wiley   +1 more source

Valoración económica por servicios recreativos del río Hacha en el piedemonte amazónico colombiano

Revista U.D.C.A Actualidad & Divulgación Científica, 2023
El río Hacha ubicado en Florencia-Caquetá, Colombia, abastece agua para el consumo humano y proporciona otros servicios ecosistémicos. Las actividades antrópicas han generado una presión en este recurso natural. Se realizó una valoración económica de la
Yelly Yamparli Pardo-Rozo, Leonardo Alonso Saldaña-Fonseca, Marlon Peláez-Rodríguez   +2 more
doaj  

Implementación de un modelo teórico a Priori de competencia matemática asociado al aprendizaje de un objeto matemático

Revista de Investigación, Desarrollo e Innovación, 2017
Este artículo es producto de una investigación cuyo objetivo fue el de apoyar al docente de matemáticas con orientaciones didácticas para promover el desarrollo de las competencias matemáticas de los estudiantes. En el trabajo investigativo se utilizó la
Bernardo García-Quiroga, Arnulfo Coronado, Albeiro Giraldo-Ospina   +2 more
doaj   +1 more source

Exploring the potential of ucuúba (Virola surinamensis) seed fat

Biofuels, Bioproducts and Biorefining, EarlyView.
Abstract Ucuúba (Virola surinamensis) fat is an important income source for Amazonian communities. Local businesses typically process whole seeds for fat extraction; however, seed structural integrity may influence extraction efficiency and fat quality.
Juan David Marmolejo Tascón, Eduardo Macedo de Melo, Jane Mara Block, Cristiano José de Andrade, Sandra Regina Salvador Ferreira   +4 more
wiley   +1 more source

Observed Tightening of Tropical Ascent in Recent Decades and Linkage to Regional Precipitation Changes [PDF]

, 2020
Climate models predict that the tropical ascending region should tighten under global warming, but observational quantification of the tightening rate is limited.
Jiang, Jonathan H., Neelin, J. David, Su, Hui, Wu, Longtao, Yung, Yuk L., Zhai, Chengxing   +5 more
core   +1 more source

Tracing the origins and evolution of nymphalid butterflies (Lepidoptera) in the Atlantic Forest

Ecography, EarlyView.
Understanding the relative roles of diversification and dispersal is key to explaining large‐scale biogeographical patterns. Although both processes are known to shape biodiversity, their relative contributions remain understudied for many organisms. Here, we examine how these processes have jointly contributed to the exceptional diversity and endemism
Mar Repullés, Nicolas Chazot, Leidys Murillo‐ Ramos, Marianne Espeland, Karina Lucas Silva‐ Brandão, Alexandre Antonelli, André Victor Lucci Freitas, Pável Matos‐Maraví   +7 more
wiley   +1 more source

Height-diameter allometry of tropical forest trees [PDF]

, 2011
Tropical tree height-diameter (H:D) relationships may vary by forest type and region making large-scale estimates of above-ground biomass subject to bias if they ignore these differences in stem allometry.
Affum-Baffoe, K., Arets, E. J. M. M., Baker, T. R., Banin, L., Berry, N. J., Bird, M., Brondizio, E. S., Chave, J., de Camargo, P., Djagbletey, G., Domingues, T. F., Drescher, M., Fearnside, P. M., Feldpausch, T. R., Franca, M. B., Fyllas, N. M., Higuchi, N., Hladik, A., Hunter, M. O., Lewis, S. L., Lopez-Gonzalez, G., Palace, Michael W., Phillips, O. L., Quesada, C. A.   +23 more
core   +1 more source

Working together for Amazonia [PDF]

Science, 2019
This month, President Jair Bolsonaro took office in Brazil. He must now lead a country that is undergoing its worst recession and political divisions in a generation—a daunting time to take up the reins. Unfortunately, his immediate solutions are a threat to the Amazon forest—a resource that most Brazilians want to protect.
openaire   +2 more sources

Update on Ouratea cidiana Sastre (Ochnaceae), a microendemic species from the Amazon: enlightening the identity and conservation status

Nordic Journal of Botany, EarlyView.
Ouratea cidiana (Ochnaceae) is a microendemic shrub species from the Brazilian Amazonia, occurring along the banks of the Trombetas River and restricted to the Cachoeira Porteira region, in western Pará State. Since the original collection nearly forty years ago, no additional records have been made, which is concerning given the continuous decline in ...
Clebiana de Sá Nunes, Mayara Dias Caldas, Fúvio Rubens Oliveira‐da‐ Silva, Anna Luiza Ilkiu‐ Borges, André dos Santos Bragança Gil   +4 more
wiley   +1 more source