Results 31 to 40 of about 32,125 (202)

Machine Learning‐Based Correction of Reanalysis Surface Radiation Fluxes Using Ground‐Measured Data in the Southern Brazilian Pampa Biome

open access: yesInternational Journal of Climatology, EarlyView.
This study demonstrates that ERA5 provides more accurate surface radiation flux estimates than MERRA2 across the Southern Brazilian Pampa. Machine learning models, particularly Random Forest, further improved the precision of reanalysis data for climate applications.
Olusola Samuel Ojo   +5 more
wiley   +1 more source

Phytoplankton of the Chaco-Pampean Plain

open access: yesAdvances in Limnology, 2014
Fil: Zalocar, Yolanda. Consejo Nacional de Investigaciones Cientificas y Tecnicas. Centro Cientifico Tecnologico Conicet - Nordeste. Centro de Ecologia Aplicada del Litoral. Universidad Nacional del Nordeste.
Zalocar, Yolanda   +2 more
openaire   +3 more sources

Two new endemic species of Portulaca (Portulacaceae) from the Brazilian Pampa grasslands

open access: yesNordic Journal of Botany, EarlyView.
Portulaca L. is a monophyletic, cosmopolitan genus of succulent plants comprising ca 153 species, with particularly high diversity in xerophytic ecosystems in tropical and subtropical regions. Based on morphological evidence, we describe and illustrate two new species from the Brazilian Pampa, Portulaca guaritensis and Portulaca guenoa.
José Roberto Ferraz   +3 more
wiley   +1 more source

A case-study amongst the Enxet of the Paraguayan Chaco [PDF]

open access: yes, 1992
An explanatory model of religious change in small-scale subsistence societies is developed, in which it is argued that the relative balance of domination between neighbouring societies is a crucial factor in the development of stimuli for religious ...
Kidd, Stephen William
core  

frontiermetrics: An R Package for Characterizing Deforestation Frontiers

open access: yesRemote Sensing in Ecology and Conservation, EarlyView.
Deforestation frontiers are major drivers of biodiversity loss, carbon emissions, and ecosystem degradation, yet our understanding of how deforestation progresses in these frontiers is limited. We present frontiermetrics, an R package to quantify a range of metrics describing the speed, severity, and spatio‐temporal patterns of forest loss. The package
Pablo Yair Huais   +5 more
wiley   +1 more source

Asimetrías de poder en el intercambio mercantil. El caso de la artesanía indígena chaqueña, Argentina

open access: yesRevista de Antropología Social, 2020
En este trabajo analizamos la implicación de la asimetría de poder en los intercambios en los que participan artesanas de dos colectivos de los pueblos Wichí y Qom de El Sauzalito y Fortín Lavalle, respectivamente. Trabajamos con el método etnográfico de
Myriam Fernanda Perret
doaj   +1 more source

Some Tuco‐Tucos Hide More Than Others: An Integrative Approach Reveals Cryptic Diversity in Ctenomys (Rodentia: Ctenomyidae) From Central Argentina

open access: yesIntegrative Zoology, EarlyView.
Here, we adopt an integrative framework (molecular phylogenetics and geometric morphometrics) to reassess patterns of diversity and differentiation across this region. We analyzed cytochrome b sequences and quantified cranial shape variation. Our analyses indicate the presence of three species groups (mendocinus, talarum, and tucumanus) and two ...
Facundo Contreras   +4 more
wiley   +1 more source

El sector agropecuario/agroindustrial de la provincia del Chaco [PDF]

open access: yes, 2020
La provincia del Chaco posee una superficie de 9.963.300 ha (4% de la superficie nacional), está ubicada en el noreste de la Argentina formando parte de una de las regiones productivas extra-pampeanas.
Piedra, Diana Raquel   +4 more
core   +1 more source

Indigenous Starter Cultures to Improve Quality of Artisanal Dry Fermented Sausages from Chaco (Argentina)

open access: yesInternational Journal of Food Science, 2015
Lactic acid bacteria (LAB) and coagulase negative cocci (CNC) were isolated from artisanal dry sausages sampled from the northeastern region of Chaco, Argentina. In order to evaluate their performance in situ and considering technological features of the
Noelia Z. Palavecino Prpich   +4 more
doaj   +1 more source

The Landless Rural Workers Movement (MST) and New Agrarian Questions in Brazil

open access: yesJournal of Agrarian Change, EarlyView.
ABSTRACT The Landless Rural Workers Movement of Brazil (MST) primarily organized occupations of large‐scale farms, forcing the redistribution of land for creation of agrarian reform settlements. In the past 20 years, however, land occupations and the establishment of new agrarian reform settlements have consistently declined, while the MST shifted ...
Estevan Coca, Gustavo de L. T. Oliveira
wiley   +1 more source

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