Results 41 to 50 of about 20,117 (197)

Geometric Morphometrics Reveal Body Shape Variation in Freshwater Shrimps of the Genus Macrobrachium Lacking a Mandibular Palp (Formerly Pseudopalaemon Sollaud, 1911) (Decapoda: Palaemonidae)

open access: yesActa Zoologica, EarlyView.
ABSTRACT Shape variation in the cephalothorax of Macrobrachium species without mandibular palp using geometric morphometrics was used as a tool to support species differentiation and propose new diagnostic characters for taxonomic identification.
Thaís Arrais Mota   +4 more
wiley   +1 more source

MUsa un modelo de evaluación de entornos virtuales de enseñanza y aprendizaje

open access: yesRevista Iberoamericana de Tecnología en Educación y Educación en Tecnología, 2012
En este trabajo se presentan los últimos avances en la construcción de MUsa, un modelo de evaluación de Entornos Virtuales de Enseñanza y Aprendizaje (EVEA) centrado en la usabilidad.
Ariel Ferreira Szpiniak   +1 more
doaj  

Manuel de Frías una vida entre Santa Fe y Asunción: entre la polémica y el olvido

open access: yesInvestigaciones y Ensayos
Este artículo se enmarca en el proceso de ocupación del territorio, y pretende dar cuenta sobre la trayectoria vital de don Manuel de Frías, quien fuera un conquistador español que ocupó varios cargos en la Provincia del Río de la Plata. La vida pública
Herib Caballero Campos
doaj   +1 more source

Structured machine learning modeling to support conservation of deep‐sea benthic biodiversity

open access: yesConservation Biology, EarlyView.
Abstract Biodiversity monitoring programs need to deliver accurate, timely, and actionable predictions. To establish a predictive monitoring program for deep‐sea benthos of the Santos Basin, Brazil, we developed a two‐stage structured model that allowed comparison of biodiversity predictions obtained from environmental simulations (2M‐Sim).
Gustavo Fonseca   +23 more
wiley   +1 more source

Fiscal Transfers between Buenos Aires and the Viceregal Interior at the End of the Colonial Period: Fall of the Situado and the Relation with the Regional Royal Treasuries (1800–1810)

open access: yesLatin American Research Review
This study reconstructs remittances from different regional haciendas to the main treasury of the Viceroyalty of the Río de la Plata, located in Buenos Aires, between 1800 and 1810.
Antonio Galarza
doaj   +1 more source

Conservation priorities for Neotropical water striders (Hemiptera: Heteroptera: Gerridae) under climate change

open access: yesConservation Science and Practice, EarlyView.
Hydrologic changes driven by climate change are affecting aquatic biota in the Neotropical Region, with significant impacts on water striders. Species distribution models predict an increase in conservation importance for the northern Andes and coastal areas of eastern South America, while central South America shows a decline. The observed changes are
Leticia Nery   +2 more
wiley   +1 more source

Potencial impacto de salinidad en las tomas argentinas del Río de la Plata Debido al descenso de caudal del Río Paraná

open access: yesRibagua
Durante los últimos años, hasta finales de 2023, se experimentó una extraordinaria disminución en los caudales del Río Paraná y por ende en el Río de la Plata.
Pablo Sebastián Chiesa   +2 more
doaj   +1 more source

Dark diversity of flea (Siphonaptera) assemblages in South American rodents: Latitudinal and altitudinal gradients

open access: yesEcological Entomology, EarlyView.
The dark diversity of compound flea communities increased from north to south. The dark diversity of compound flea communities increased from lower to higher altitudes. The dark diversity of component flea communities also increased from north to south but did not vary with altitude.
Juliana P. Sanchez   +2 more
wiley   +1 more source

Erosión en la bahía de Samborombón y cambios en la dirección de los vientos, provincia de Buenos Aires, Argentina Erosion at the Samborombón Bay and changes in wind direction, province of Buenos Aires, Argentina

open access: yesRevista del Museo Argentino de Ciencias Naturales, 2011
El corrimiento del anticiclón semipermanente del Atlántico Sur hacia el S y una intensificación de los vientos del E en el río de la Plata ha sido documentada por diversos autores.
Jorge O Codignotto   +6 more
doaj  

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