Results 21 to 30 of about 11,253,304 (164)

From armadillos to sloths: Patterns and variations in xenarthran coronary anatomy

open access: yesThe Anatomical Record, EarlyView.
Abstract Species of the superorder Xenarthra play a vital ecological role in the Neotropics. Despite their evolutionary significance, anatomical studies on their coronary circulation remain scarce. This study investigated the coronary anatomy of 82 hearts from nine Xenarthra species across the Dasypodidae, Myrmecophagidae, and Bradypodidae.
Wilson Viotto‐Souza   +5 more
wiley   +1 more source

ARTEFACTOS MALACOLÓGICOS. DIFERENTES CONTEXTOS DE USO EN SITIOS ARQUEOLÓGICOS DE LA PROVINCIA DE LA PAMPA (ARGENTINA).

open access: yesComechingonia. Revista de Arqueología, 2019
El empleo de malacofauna en sitios arqueológicos de  la Pampa Occidental  presenta una amplia distribución espacial y cronológica. Las especies identificadas corresponden a gasterópodos y bivalvos, tanto de origen marino como dulceacuícola.
M. Berón
semanticscholar   +1 more source

Health Biomarkers of Pesticide Exposure in Rural Populations of Santa Fe, Argentina: Oxidative Stress and Genotoxicity

open access: yesJournal of Applied Toxicology, EarlyView.
ABSTRACT The present study aimed to quantify pesticide residues in environmental matrices and plasma and to evaluate their potential effects on oxidative stress and DNA damage in rural populations of Santa Fe province. Soil and rainwater samples were collected, and biological samples and semistructured surveys were obtained from volunteers in three ...
María Priscila Dechiara   +4 more
wiley   +1 more source

El poder del centro: espacios y lugares de la pampa

open access: yesArmiliar, 2019
Este artículo trata de la representación de la noción de la pampa en la obra decinco pintores argentinos y en relación con las descripciones de la región devarios novelistas y poetas argentinos de los siglos XIX, XX y XXI.
Aníbal A. Biglieri
semanticscholar   +1 more source

Assessment of Soil Erosion Over Six Decades in a Long‐Term Experiment Using Fallout 137Cs and RUSLE: A South American Case Study

open access: yesLand Degradation &Development, EarlyView.
ABSTRACT Soil erosion remains a major global concern affecting agricultural productivity and land sustainability. This study investigates the magnitude and variability of soil erosion in a long‐term experiment (LTE) established in 1963 in Colonia, Uruguay, aiming to compare the performance of the 137Cs tracer technique and the RUSLE model across ...
Marcos Tassano   +6 more
wiley   +1 more source

Disentangling conservation asymmetries through socio‐economic transboundary factors across the Alto Paraná Atlantic Forest of South America

open access: yesPeople and Nature, EarlyView.
Abstract Ecoregions are often defined based on homogeneous biophysical and ecological conditions and are optimal spatial units for designing conservation strategies. However, transboundary ecoregions such as the Alto Paraná Atlantic Forest (APAF) experience asymmetrical conservation outcomes, understood here as cross‐border differences, resulting from ...
Lía Montti   +16 more
wiley   +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

Pueblo ferroviario de hucal: revalorización cultural y paisajística

open access: yesSemiárida, 2018
Hucal es un pequeño pueblo ubicado en el sureste de la provincia de La Pampa, con una dilatada historia regional. La zona donde se emplaza supo estar habitada, durante varios milenios, por tribus de Pámpidos Tehuelches, llegando al siglo XIX bajo la ...
José Horacio Pagella   +14 more
doaj  

Manejo sitio-específico de la tierra para mejorarla eficiencia de uso de recursos y el nivel de los servicios ecosistémicos

open access: yesSemiárida, 2018
La “intensificación ecológica” tiene por objetivo igualar o aumentarlos niveles de rendimiento y reducir al mínimo los impactos negativos sobre el medio ambiente, y consecuentemente sobre la productividad agrícola, a través de la integración de la ...
Elke Johanna Noellemeyer   +13 more
doaj  

Drivers of phenological transitions in the seedling life stage

open access: yesFunctional Ecology, EarlyView.
Read the free Plain Language Summary for this article on the Journal blog. Abstract Plant functional ecology research has primarily focused on juvenile and adult plants even though regeneration from seed can be the most consequential life‐history bottleneck with cascading influence on later stages of growth and reproduction.
Mandy L. Slate   +10 more
wiley   +1 more source

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