Results 11 to 20 of about 1,265 (132)

Influencia de la dinámica del paisaje en la distribución de las comunidades vegetales en la cuenca del río Zapotitlán, Puebla

open access: yesInvestigaciones Geográficas, 1991
In the recent years, the influence of the landscape´s heterogeneity in the structure of plant communities has been recognized. In terms of geographic scales, the geomorphological dynamic is very important to explain the landscape structure in arid lands.
Felipe García Oliva
doaj   +3 more sources

Science and Knowledge of Free‐Roaming Donkeys—A Critical Review

open access: yesThe Journal of Wildlife Management, Volume 85, Issue 6, Page 1200-1213, August 2021., 2021
ABSTRACT The emergence of free‐roaming donkey (Equus asinus) populations globally has brought novel challenges for conservationists, land managers, and those concerned about animal welfare. We provide a review of the scientific literature pertaining to the place and role of free‐roaming donkeys from 1950 until 2020.
Cara L. Clancy   +3 more
wiley   +1 more source

Distilling agro‐extractivism: Agave and tequila production in Mexico

open access: yesJournal of Agrarian Change, Volume 21, Issue 2, Page 219-241, April 2021., 2021
Abstract This article seeks to challenge the notion that the concept of agro‐extractivism be restricted to crops destined for export with little or no processing. Based on a study of agave and tequila production in Mexico, it argues that the domestic processing of biomass does not change nor necessarily compensate for the negative social and ...
Darcy Tetreault   +2 more
wiley   +1 more source

Addressing global challenges with unconventional insect ecosystem services: Why should humanity care about insect larvae?

open access: yesPeople and Nature, Volume 2, Issue 3, Page 582-595, September 2020., 2020
Abstract Ecosystem services are essential for the health of current and future generations and key to the sustainable development of our societies. The role of insects in providing ecosystem services has been increasingly recognized, becoming the focus of several management and conservation initiatives world‐wide.
Juliano Morimoto, Jim Harris
wiley   +1 more source

Optimization of the Supply Chain in the Production of Ethanol from Agricultural Biomass Using Mixed‐Integer Linear Programming (MILP): A Case Study

open access: yesMathematical Problems in Engineering, Volume 2020, Issue 1, 2020., 2020
The production of biofuels from agricultural biomass has attracted much attention from researchers in recent years. Biomass residues generated from agricultural production of corn and barley represent an essential source of raw material for the production of biofuels, and a mathematical programming‐based approach can be used to establish an efficient ...
Edgar León-Olivares   +4 more
wiley   +1 more source

Centro de capacitación y distribución de productos San Martín Zapotitlán, Retalhuleu [PDF]

open access: yes, 2016
Contempla los espacios administrativos, el área educativa, la de capacitación, la recreativa, la agrícola y la comercial. Los ambientes para los servicios y los parqueos, para propiciar la formación técnica y organizar las actividades comerciales de los ...
Rosales Mendoza, Andrea Jeanneth
core   +2 more sources

Is Sexual Dimorphism in the Immune Response of Gryllodes sigillatus Related to the Quality of Diet?

open access: yesInternational Scholarly Research Notices, Volume 2014, Issue 1, 2014., 2014
Whereas some authors have proposed that sexual dimorphism in the immune response is fixed, others pose that it is dynamic and depends on diet. The aim of the present study was to explore the second hypothesis. Immunocompetence differences between females and males can be linked to resource availability.
Adolfo Galicia   +5 more
wiley   +1 more source

Lower Cretaceous Dinosaur Tracks from Puebla, Mexico

open access: yesJournal of Geological Research, Volume 2012, Issue 1, 2012., 2012
Dinosaur tracks have been identified near San Martín Atexcal, southern Puebla, Mexico, within the sedimentary sequence of the San Juan Raya Formation of Lower Cretaceous (Albian) age. The tracksite, located in the bed of the Magdalena River, reveals six different ichnofossiliferous levels identified within a 9 m thick sedimentary sequence. The inferred
Rubén A. Rodríguez-de la Rosa   +4 more
wiley   +1 more source

Estudio etnobotánico de Zapotitlán Salina, Puebla [PDF]

open access: yes, 2007
En este trabajo se documenta el papel y potencial de los recursos vegetales de Zapotitlán Salinas, Puebla, una comunidad de origen popoloca, ubicada en la porción más árida del Valle de Tehuacán-Cuicatlán.
PATRICIA DOLORES DAVILA ARANDA   +5 more
core   +1 more source

Foraging Activity and Trophic Spectrum of Red Ant Pogonomyrmex barbatus Smith, 1858, in Productivity‐Contrasted Microenvironments

open access: yesPsyche: A Journal of Entomology, Volume 2012, Issue 1, 2012., 2012
Foraging strategies can be influenced by many factors such as abundance, availability, and toxicity of the resources. In arid zones, the distribution and productivity of plants also act as additional factors that affect foraging strategies. Twenty colonies of Pogonomyrmex barbatus ants were studied in an arid zone of central Mexico to evaluate the ...
Rafael Guzmán-Mendoza   +3 more
wiley   +1 more source

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