Results 41 to 50 of about 97,331 (271)

Predators do not spill over from forest fragments to maize fields in a landscape mosaic in central Argentina [PDF]

open access: yes, 2017
South America is undergoing a rapid and large scale conversion of natural habitats to cultivated land. Ecosystem services (ESs) still remain important but their level and sustainability are not known.
Ferrante, Marco   +2 more
core   +1 more source

An Investigation of Hyperostosis Frontalis Interna in a Modern Anatomical Body Donor Population

open access: yesClinical Anatomy, EarlyView.
ABSTRACT This research sought to examine the prevalence and severity of hyperostosis frontalis interna (HFI) in the Chicagoland anatomical body donor population. The study further aimed to elucidate potential demographic risk factors for HFI, including sex, age at death, and structural vulnerability index (SVI), as well as any common comorbidities, as ...
Amy C. Beresheim, Amanda Hall
wiley   +1 more source

Desertification Risk: Bibliometric Analysis and Future Research Directions

open access: yesLand Degradation &Development, EarlyView.
ABSTRACT Desertification, driven by climatic and anthropogenic factors, is one of the most pressing global environmental challenges, causing significant economic, ecological, and social consequences. A bibliometric analysis was performed to identify research trends and gaps in the desertification risk topic.
Fatima‐Ezzahrae Imam   +5 more
wiley   +1 more source

El desarrollo rural en la Provincia del Chaco: fundamentos y variables de análisis

open access: yesGeográfica Digital, 2017
Las políticas públicas de desarrollo rural impulsadas desde hace varias décadas en el territorio provincial tuvieron poca efectividad, ello es evidente, por cuanto los datos recopilados muestran una creciente desigualdad y despoblamiento de amplias zonas
Viviana C. Pertile
doaj   +1 more source

Predicting the current distribution of the chacoan peccary (catagonus wagneri) in the gran Chaco [PDF]

open access: yes, 2016
The Chacoan peccary (Catagonus wagneri), or Tagua, an endemic species living in the Chaco eco¬region, is endangered by highly increasing deforestation rates across the region, particularly in the last decade.
Altrichter, Mariana   +20 more
core  

Two new records for the flora of Paraguay: Stemodia diplohyptoides and S. lobelioides (Plantaginaceae:Gratioleae)

open access: yesNordic Journal of Botany, EarlyView.
Stemodia diplohyptoides M.M.Sosa & Dematt. and S. lobelioides Lehm. (Gratioleae, Plantaginaceae) are reported for the first time in Paraguay, found in Alto Paraná and Presidente Hayes departments, respectively. These new records extend the known geographical range of both species, representing the northern records to date, S.
Y. Carlés Bechara   +4 more
wiley   +1 more source

Las denominaciones vernáculas y el conocimiento toba del entorno vegetal

open access: yesRevista de Dialectología y Tradiciones Populares, 2009
A partir del análisis de las denominaciones vernáculas en la fitonimia toba, este trabajo aborda la percepción y el conocimiento del entorno vegetal entre los tobas del río Bermejito (Chaco Central, Argentina).
Gustavo J. Martínez, Paola Cúneo
doaj   +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

Glyphosate and AMPA concentrations in wind-blown material under field conditions [PDF]

open access: yes, 2018
Agricultural intensification in fragile arid and semiarid environments has led to an increase in soil degradation, mainly through wind erosion. Argentina is an agricultural and cattle-farming country, which has increased its productivity in the last few ...
Aimar, Silvia Beatriz   +4 more
core   +1 more source

Big Bird: A global dataset of birds in drone imagery annotated to species level

open access: yesRemote Sensing in Ecology and Conservation, EarlyView.
Drones are a valuable tool for surveying birds, but manually detecting and identifying birds in drone images is costly. We assembled a diverse dataset of 23 865 images of birds captured with 21 different drones across 11 countries. We labelled 4824 of these images, detailing the location, species, posture category, age category, and sex of 49 990 birds
Joshua P. Wilson   +19 more
wiley   +1 more source

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