Results 91 to 100 of about 225,138 (210)

Wetland location and captive breeding influence trans‐Mediterranean movements in the endangered Marbled Duck (Marmaronetta angustirostris)

open access: yesIbis, Volume 168, Issue 1, Page 245-258, January 2026.
Waterbirds distributed in semi‐arid and arid regions seem to have adapted their behaviour to the availability and seasonality of wetlands, increasing their mobility range. The Marbled Duck Marmaronetta angustirostris is a threatened waterbird that shows trans‐Mediterranean movements but these are poorly known.
Irene Pacheco‐Guardiola   +6 more
wiley   +1 more source

Posibilidades y limitaciones del cebo ecológico de terneros en Asturias [PDF]

open access: yes, 2014
La ganadería ecológica puede ser una buena alternativa para las condiciones de la Cornisa Cantábrica, dado el potencial productivo de pastos y forrajes en los que se basan los sistemas extensivos.
Celaya Aguirre, Rafael   +2 more
core  

Revisiting Deere in an Extractivist Era: Agrarian Reform and Feminist Legacies in Coastal Ecuador

open access: yesJournal of Agrarian Change, Volume 26, Issue 1, January 2026.
ABSTRACT This article examines how campesinas in coastal Ecuador have navigated shifting labour roles, financial precarity and ecological degradation under Plan Tierras, a state‐led land redistribution policy embedded in an extractivist model of agriculture.
Natalia Landívar, Lynne Phillips
wiley   +1 more source

Ganadería. Presentación

open access: yesAmérica Latina en la Historia Económica, 2003
No contiene resumen.
ALHE Editor
doaj   +1 more source

Gestión del pastoreo: conocimientos y prácticas de manejo de las especies forrajeras en la ganadería trashumante de Iruya (Salta, Argentina).

open access: yes, 2020
Introducción y objetivos: En el NO de Argentina se encuentran sistemas ganaderos de subsistencia con manejo extensivo del pastoreo a cargo de unidades familiares.
Laura M. Califano
semanticscholar   +1 more source

A new phylogeny of Anastrepha (Diptera: Tephritidae) based on nuclear loci obtained by phylogenomic methods

open access: yesSystematic Entomology, Volume 51, Issue 1, January‐March 2026.
We present an extensive phylogenetic analysis, based on 293 nuclear loci and 728 individuals representing 237 species of Anastrepha, the largest and most economically important New World genus of Tephritidae. The analysis strongly supports the monophyly of most Anastrepha species groups, also revealing previously unknown relationships among species and
Allen L. Norrbom   +19 more
wiley   +1 more source

Intoxicação por organoclorados (endosulfan) em bovinos no Uruguai

open access: yesPesquisa Veterinária Brasileira, 2011
Descreve-se um surto de intoxicação por organoclorados (Endosulfan) em bovinos ocorrido em abril de 2009, em uma propriedade de recria de bezerros localizada no departamento de Paisandú, Uruguai.
R. Rivero   +3 more
doaj   +1 more source

Evaluation of the protective capacity of the novel vaccine strain Delta-pgm in bovines [PDF]

open access: yes, 2013
La brucelosis bovina es una zoonosis ampliamente distribuida en el mundo y que continúa produciendo importantes pérdidas económicas y problemas de salud en humanos.
Bagnat, Eduardo   +5 more
core  

Spatial Representativeness of MexFlux as a Regional FLUXNET Network

open access: yesJournal of Geophysical Research: Biogeosciences, Volume 130, Issue 12, December 2025.
Abstract Environmental observatory networks are fundamental in advancing scientific understanding of biogeochemical processes. FLUXNET is a global network of regional eddy covariance networks that measure ecosystem‐scale exchanges of greenhouse gases (e.g., CO2, CH4, H2O) and energy between the biosphere and the atmosphere.
Rodrigo Vargas   +21 more
wiley   +1 more source

A comparison of Criollo and Suffolk ewes for resistance to Haemonchus contortus during the periparturient period

open access: yesJournal of Applied Animal Research, 2018
Criollo and Suffolk ewes were compared for resistance to an experimental infection with Haemonchus contortus in the periparturient period. Measures on days −28, −14, 0 (lambing date), 14, 28, and 42 were taken on number of eggs per gram of faeces (EPG ...
Eliseo Romero-Escobedo   +5 more
doaj   +1 more source

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