División de Ciencias Ambientales: Envíos recientes
Mostrando ítems 301-320 de 454
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Seed germination of Opuntia species from an aridity gradient in Central Mexico
(2010)"In the Mexican highlands there are several aridity gradients affecting Opuntia species composition and its biological function. Since environmental variations can affect plant traits like seed morphology as well as related ... -
Relación entre atributos ecofisiológicos de la especie vulnerable Pinus caribaea Morelet var. caribaea y características ambientales de ocho localidades en pinar del río, Cuba
(2009-05)"Pinus caribaea Morelet var. caribaea Barret & Golfari es una especie vulnerable, debido a la fragmentación de su hábitat y a su extracción. En Pinar del Río, Cuba, las poblaciones naturales de esta especie se encuentran ... -
Análisis del concepto de sostenibilidad en la legislación mexicana usando el paradigma de desarrollo de las zonas secas
(2012)"Utilizando el paradigma de Desarrollo de las Zonas Secas (DDP, por sus siglas in ingles) este trabajo analiza la relación entre el discurso legal, el desempeño de las instituciones gubernamentales y el manejo de sistemas ... -
Studies of adsorption of heavy metals onto spent coffee ground: equilibrium, regeneration, and dynamic performance in a fixed-bed column
(2016)"Equilibrium and dynamic adsorption of heavy metals onto spent coffee ground (SCG) were studied. The equilibrium adsorption of Cd2+, Cu2+, and Pb2+ in a batch system was modeled by an ion-exchange model (IEM) based on an ... -
Carbonaceous and protein constituents in dairy wastewater lead to a differentiated current generation in microbial fuel cells (MFCs)
(2014)"The effect of real dairy wastewater (DWW) additions on the current density generated by a bioanode was evaluated in a half cell configuration under potentiostatic control, thus simulating the anodic chamber of a Microbial ... -
Effect of light on seed germination of succulent species from the southern Chihuahuan Desert: comparing germinability and relative light germination
(2010)"Light requirements for cactus seed germination have been considered to be associated with their life form, but this has not been thoroughly studied for other succulent species. In this study, we performed a light and ... -
New distributional records for the endagered worthen's sparrow Spizella wortheni in San Luis Potosí, Mexico
(2015-08)"El rango de distribución restringido y el pequeño tamaño poblacional del gorrión de Worthen han ocasionado que esta ave sea considerada una especie amenazada en México y a nivel internacional. Aquí reportamos nuevos ... -
The andean forest soil seed bank in two successional stages in northeastern Colombia
(2016-12)"Background: Soil seed banks play an important role in post-disturbance regeneration and succession of species from different successional stages. Questions: 1) What is the most effective method for determining the ... -
Germinación de semillas de Magnolia pugana (Magnoliaceae), especie endémica y en peligro de extinción del occidente de México
(2016-09)"Magnolia pugana es una especie endémica y en peligro de extinción localizada en el occidente de México, que se distribuye en bosques de galería en las barrancas del sur de Zacatecas y centro-norte de Jalisco. El objetivo ... -
Effects of spine-shading on aspects of photosynthesis for three cactus species
(2016-06)"We evaluated the effect of spine removal on three cactus species varying in spine-shading of stems. Turbinicarpus schmiedickeanus showed the greater spine shading (c. 61 %), followed by Mammillaria zephyranthoides (43 %), ... -
Impacto dos mediadores redox na remoção de cor de corantes azo e antraquinônico por lodo granular anaeróbio sob condições mesofílicas e termofílicas
(2007)"Investigou-se o efeito de diferentes mediadores redox (MR) na remoção de cor de corantes azo e antraquinônico pelo uso de lodo granular anaeróbio sob condições mesofílicas (30ºC) e termofílicas (55ºC). Comprovou-se em ... -
Growth and ecophysiology of succulent seedlings under the protection of nurse plants in the Southern Chihuahuan Desert
(2015-03)"In arid zones, light and water are two important factors that limit seedling development. The shade provided by nurse plants can reduce overheating, excessive transpiration, and photoinhibition in protege seedlings. The ... -
Primeros registros del ibis blanco (Eudocimus albus) en el Altiplano de San Luis Potosí, México
(2012-12)"Reportamos dos observaciones visuales del ibis blanco (Eudocimus albus) de la Laguna de Los Coyotes, un afluente natural del manantial la Media Luna que se localiza en el municipio de Rioverde, San Luis Potosí, México. ... -
Differential allelopathy between genders of an invasive dioecious tree on desert plants
(2016-06)"The Peruvian peppertree (Schinus molle) is a dioecious species from South America that was introduced into central Mexico five centuries ago. This tree has invaded abandoned agricultural fields from semiarid regions, where ... -
Effects of wetting and drying cycles on the germination of nine species of the Chihuahuan Desert
(2016-06)"Plants from drylands have developed strategies to germinate even in places where available humidity is sporadic with large periods of drought. Previous works determined germination of cacti species as a response to ... -
The relevance of burial to evade acorn predation in an oak forest affected by habitat loss and land use changes
(2014-06)"Seed burial was proposed as an effective mechanism to evade seed predation in continuous forests. However, the relevance of burial as a mechanism to evade seed predators may be compromised in fragmented forests intensely ... -
Effects of shade on germination traits of the endangered cycad Dioon edule (Zamiaceae)
(2016-03)"The endangered cycad Dioon edule requires shade provided by filtered sunlight under the canopy of trees or maternal plants during initial growth stages. It is known that germination improves under shade, but there is no ... -
Estructura de un bosque natural perturbado de Pinus tropicalis Morelet en Galalón, Cuba
(2014-09)"Los bosques naturales de Pinus tropicalis Morelet en Cuba han sido alterados por prácticas inadecuadas de aprovechamiento forestal. Esta investigación tiene el objetivo de caracterizar la estructura de un bosque perturbado ... -
Inmovilización de un mediador redox en carbón activado y su aplicación en la reducción biológica de colorantes azo
(2011)"El presente estudio reporta por primera vez la inmovilización de un catalizador con capacidad para transferir electrones (mediador redox) en carbón activado (CA). El CA granular estudiado presentó una gran capacidad de ... -
Factores abióticos involucrados en la facilitación entre leñosas y suculentas en el altiplano mexicano
(2013-09)"Se estudiaron características fisiológicas y morfológicas de plántulas de especies leñosas (nodrizas) y suculentas (protegidas), las cuales se distribuyen en un gradiente ambiental en el Altiplano Mexicano. Del extremo ...