Evaluación poblacional del venado cola blanca en un bosque tropical seco de la mixteca poblana Auteurs: López-Téllez, M. Concepción, Mandujano, Salvador, Yánes, Gonzalo

“…To evaluate the potential use and management in extensive UMAs, we estimated the population density of the white-tailed deer (Odocoileus virginianus mexicanus) and the habitat characteristics in a tropical dry forest from four towns of the Mixteca Poblana, Mexico. In each location, five transects were established to count the fecal groups from March 2000 to March 2001. …”

Using population viability analysis for management recommendations of the endangered endemic peninsular pronghorn Auteurs: Cancino, Jorge, Rodríguez-Estrella, Ricardo, Miller, Philip

“…A case study on the viability of small populations with a restricted distribution and reduction in habitat quality is addressed using the peninsular pronghorn (Antilocapra americana peninsularis) of Baja California Peninsula, Mexico. The present size of its wild population is less than 250 individuals, being in an IUCN Critically Endangered status. …”

The life cycle of a desert spider inferred from observed size frequency distribution Auteurs: Nieto-Castañeda, Irma Gisela, Salgadougarte, Isaías Hazarmabeth, Jiménez-Jiménez, María Luisa

“…We did monthly collections for over a year at La Paz, Baja California Sur, Mexico. We found that adult spiders were more abundant between August and November 2005 and had low abundance or were absent the remainder of the year while juveniles were present all year. …”

Modification of root density in pot experiments with two tropical earthworm species. Auteurs: G. Brown, George, Kretzschmar, André, C. Patrón, José

“…Three greenhouse experiments were performed to assess the role of two common tropical geophagous endogeic earthworm species, Pontoscolex corethrurus and Polypheretima elongata, on root density of several plant species in two soil types, a clayey Andosol and a sandy Alfisol, from Veracruz, Mexico. The equivalent of about 12 kg dry soil were placed into 20 l plastic pots and 3-14 individuals were inoculated to pots planted with common beans (Phaseolus vulgaris), Brachiaria decumbens pasture grass under four P fertilization regimes (0, 1.6, 8.4 and 10 kg P ha-1) and maize (Zea mays) with or without surface residues. …”

Depredación por Podisus maculiventris (Say) sobre larvas de Choristoneura rosaceana (Harris) Auteurs: Nájera-Miramontes, Daniela, Ordóñez-García, Magali, Ríos-Velasco, Claudio, Berlanga-Reyes, David I., Acosta-Muñiz, Carlos H., Zamudio-Flores, Paul B., Romo-Chacón, Alejandro, Jacobo-Cuéllar, Juan L.

“…Choristoneura rosaceana (Harris) es una plaga del manzano Malus domestica Borkh. de reciente aparición en México. Su control depende básicamente del uso de insecticidas químicos; sin embargo, existen registros de enemigos naturales de esta plaga que ejercen un control considerable. …”

Record of reproductive structures of three species of the Order Bryopsidales (Chlorophyta, Ulvophyceae) from the Mexican Caribbean Auteurs: Acosta-Calderon, Julio Adulfo, Mateo-Cid, Luz Elena, Mendoza-González, Ángela Catalina, García-López, Deisy Yazmín

“…The main objective is to describe and illustrate the reproductive structures of Avrainvillea digitata, A. nigricans f. floridana and Halimeda incrassata.Methods: Fertile thalli were collected from four sample sites in the Biosphere Reserve of Sian Ka’ an, Quintana Roo, Mexico. Descriptions of the morphology and anatomy of the thalli, as well as of the structure and size of the reproductive structures were elaborated.Key results: In A. digitata, sporangia are claviform whereas they are ellipsoidal in A. nigricans f. floridana. …”

Taxonomy of Hedwigia filiformis (Bryopsida: Hedwigiaceae), with the clarification of the confounded identity of its synonym Hedwigia integrifolia Auteurs: De Luna, Efraín

“…For the correct identification of Hedwigia filiformis, a morphological description and illustrations are provided for this species, so far known to occur in Canada, the USA, Mexico, Italy, Japan and South Korea.Conclusions: Hedwigia filiformis differs from other species in Hedwigia mostly by its slender sympodial branches, short ovate leaves with revolute margins, the very short hyaline leaf acumina, and the short elliptical apical cell. …”

Jarava disticha (Poaceae, Pooideae, Stipeae), a new nomenclatural combination and taxonomic delimitation with Jarava pachypus Auteurs: Muñuico, Jhon W., Dillon, Michael O., Quipuscoa Silvestre, Victor

“…Background and Aims: The genus Jarava consists of 30-32 species distributed from Mexico to South America. Stipa and Jarava were not well delimited for many years, even Stipa disticha was considered as a synonym of J. pachypus in taxonomic treatments and catalogs. …”

The Agave victoriae-reginae complex (Agavaceae) Auteurs: González-Elizondo, M. Socorro, González-Elizondo, Martha, López-Enríquez, Irma L., Reséndiz-Rojas, Lorenzo, Tena-Flores, Jorge A., Retana-Rentería, Flor Isela

“…The name Agave victoriae-reginae has been applied to a group of plants endemic to northern Mexico which are easily distinguished from other species of Agave by having leaves with corneous, entire margins, white lines on both faces and flowers with short, funnelform tubes. …”

Effect of substrate and density on the quality of seedlings of Mexican cedar, mahogany and roble (Tabebuia) Auteurs: Negreros-Castillo, Patricia, Apodaca-Martinez, Maribel, Mize, Carl W.

“…Reforestation in Mexico is important to recuperate the productivity of deforested and degraded areas and to maintain that of commercial forests. …”

The temperate forest of the state of Nuevo León: sustainable management for goods and environmental services Auteurs: Návar-Cháidez, José de Jesús

“…In this research paper, information is presented on the dasometric features of standing volume, diameter, top height, tree density, diameter distributions, tree and stand productivity, aboveground biomass, carbon in aboveground biomass and the tree biological diversity of temperate forests of the state of Nuevo Leon, Mexico. This information was derived from 63 inventoried sites within the framework of the forest inventory of 2004-2006. …”

Size matters: the Juniperus deppeana Steud. (sabino) big fruits are more sensitive to insect depredation Auteurs: Martínez, Armando J., Sainos, Pilar, Lezama Delgado, Ernesto, Angeles-Álvarez, Guillermo

“…The relationship between fruit size of Juniperus deppeana and damage caused by seed predator insects, in a forest fragment of Juniperus deppeana ( sabino), typical of the state of Tlaxcala, Mexico was analyzed. Female trees were selected to quantify fruit maturation. …”

Reservas extractivas ¿Alternativa para la conservación de especies forestales? Auteurs: Pérez-García, Martha, Rebollar Domínguez, Silvia

“…Extractive reserves strategy was incorporated in the Brazilian law in 1990, and currently they are avoiding the reduction of the deforestation rates. In Mexico this concept was applied in 1910 at the Maya area of Quintana Roo state. …”

Correlación de los resultados de impacto o tenacidad de 16 maderas mexicanas utilizando dos métodos de prueba Auteurs: Bárcenas Pazos, Guadalupe, Zárate Morales, Reyna Paula, Ordóñez Candelaria, Víctor Rubén, Guerrero Báez, Abigail, Honorato Salazar, J. Amador

“…There are several test methods to determine wood shock resistance, among those used in Mexico are the toughness test based on the ASTM D143  standard (ASTM, 1999) and the Impact or dynamic flexure test, based on the NF B51-009 standard (AFN, 1942). …”

Pentaclorofenol: toxicología y riesgos para el ambiente Auteurs: Castillo Morales, Irasema, Bárcenas Pazos, Cristina

“…These works are the technical basis of the severe restrictions or even total ban status of PCP and its derivatives and residues in several countries. In Mexico, PCP is authorized for forest, urban and industrial applications as a wood preserver. …”

Importancia ecológico-económica del aprovechamiento de los bosques Auteurs: Dávalos Sotelo, Raymundo

“…This is not the case in Mexico. The central hypothesis of this paper is that the use of wood is not harmful to the environment. …”

Resistencia natural de trece maderas mexicanas al ataque de termitas subterráneas Auteurs: Reyes Chilpa, Ricardo, Viveros Rodríguez, Nohemí, Pérez Morales, Víctor

“…The racks were placed on the soil of the test area, in a tropical deciduous forest of the Biological Station "La Mancha", Veracruz, México. The total exposure period was 15 months. Natural resistance was evaluated by means of termite damage, according to a visual-rating system with five categories. …”

Culture of Pleurotus ostreatus in pine shavings: isolation of strains and evaluation of their productivity Auteurs: Mata, Gerardo, Pérez-Torres, José Antonio, Medel, Rosario, Pérez-Merlo, Rosalía, Salmones, Dulce

The valuation of ecosystem services from the Totonac indigenous worldview Auteurs: López Santiago, Marco Andrés

“…The municipality of Filomeno Mata, Veracruz, Mexico was chosen as the case study. This municipality is characteristic of the mountain region of totonacapan. …”

Woody Vegetation Types and floristic composition in the Unesco Global Geopark Mixteca Alta, Oaxaca Auteurs: Ramírez Santiago, Rosario, Orozco-Ramírez, Quetzalcóatl, Clark Tapia, Ricardo, Cruz Ramírez, Miguel Ángel

“…Floristic composition is like other temperate zones in Mexico but, richness in our study site is lower. However, oak forest and oak and pine forest are richer in species than xerophytic scrub and scrub with juniper. …”