Results 51 to 60 of about 11,895 (273)

Body Size Regulates Niche Overlap Asymmetry in the Subtropical Andes Rain Shadow: Isotopic Paleoecology of Oligocene South American Ungulates

open access: yesIntegrative Zoology, EarlyView.
This study provides the first isotopic analysis of Oligocene mammals from Quebrada Fiera, Mendoza, Argentina, filling a major gap in South American paleontology. It reveals a latitudinal gradient in aridity due to the Andean rain shadow and highlights the role of (semi)permanent water bodies in sustaining diverse herbivore communities. Additionally, it
Dánae Sanz‐Pérez   +4 more
wiley   +1 more source

Estructura y productividad de una población silvestre de Physaria mendocina (Brassicaceae). Implicancias para su desarrollo como cultivo oleaginoso

open access: yesEcología Austral, 2012
Physaria mendocina, es una hierba perenne nativa del Monte en Argentina, de la que existen pocas poblaciones conspicuas y que ha sido propuesta como un nuevo cultivo oleaginoso para zonas áridas. Evaluamos una población en el Parque Nacional Lihué Calel
Wanda J. Masnatta   +2 more
doaj   +1 more source

Primer registro de estromatolitos en el Maastrichtiano tardío del Grupo Chubut, Cuenca del Golfo San Jorge, Patagonia central, Argentina

open access: yesAndean Geology, 2020
The presence of stromatolites from Cretaceous outcrops at the headwaters of the río Chico locality in the Golfo San Jorge Basin is reported for the first time.
Gabriel A. Casal   +6 more
semanticscholar   +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

Lack of Compliance in Gillnet Fisheries Regulations Increases Risk to a Vulnerable Species

open access: yesFisheries Management and Ecology, EarlyView.
ABSTRACT This article presents an analysis of regulatory compliance in a Brazilian gillnet fishery, based on Vessel Monitoring System (VMS) tracking data. Satellite transmissions records, interpreted as proxies for gillnet haulings events, were analyzed and classified using a neural network to assess the level of compliance of the gillnet fleet.
Rodrigo Claudino dos Santos   +3 more
wiley   +1 more source

Praxis en Salud Social y Comunitaria en Chubut: experiencias en la construcción de una red de promotores-as comunitarios-as de salud en contexto de situaciones críticas [PDF]

open access: yes, 2023
El impacto de la pandemia alteró profundamente la vida cotidiana de las personas, las comunidades y de las instituciones. En cuestión de días, las dos Universidades que participaron en este libro se adaptaron para implementar una virtualización de ...
Gotti, Amanda   +2 more
core  

Beetle mania: Understanding pond aquatic beetles diversity patterns through a multiple-facet approach

open access: yesHeliyon, 2023
Ecological studies searching for drivers of biodiversity variation have frequently focused on taxonomic richness. However, more aspects of biodiversity, namely diversity facets can be considered to properly assess biotic-environment relationships.
Nicolás Martínez-Román   +4 more
doaj   +1 more source

Análisis de las precipitaciones anuales período 2010-2022 [PDF]

open access: yes, 2023
A raíz de estos marcados eventos en diferentes regiones del país, se analizaron datos de precipitación de una serie de años en la provincia del Chubut para observar si existe algún período de precipitaciones escasas y su magnitud.
Gonzalez, Javier Horacio   +1 more
core  

Development morphology of Undaria pinnatifida sporophytes (Phaeophyceae, Alariaceae) in Caleta Cordova (Chubut, Argentina)

open access: yesMarine and Fishery Sciences (MAFIS), 2020
Undaria pinnatifida is an invasive brown algae that has been found on the Argentine coast since 1992. This work aims to follow the ontogeny of sporophytes, from egg fecundation to thallus senility, and thereby contribute to information on the development
M. V. Alvarez, A. Boraso
semanticscholar   +1 more source

From living to fossil: ancestral state reconstruction of leaf architecture in extant Lauraceae and its relevance for the fossil record

open access: yesPalaeontology, Volume 69, Issue 3, 2026.
Abstract Lauraceae are a tropical–subtropical angiosperm family that exhibit significant diversity and a rich fossil record, primarily of leaves found worldwide from the Cretaceous to the present. However, the taxonomic placement of many fossil leaves remains uncertain because of morphological convergence and limited variation in leaf characters among ...
Marco A. Rubalcava‐Knoth   +3 more
wiley   +1 more source

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