Análisis comparativo de la quiropterofauna del Valle de Tehuacan-Cuicatlan, Puebla, Oaxaca Dahkkit: Rojas Martinez, Alberto Enrique, Valiente Banuet, Alfonso

Sex-steroids associated with the reproductive cycle in male and female Bolson tortoise, Gopherus flavomarginatus Dahkkit: González Trápaga, Rolando, Aguirre, Gustavo, Adest, Gary A.

“…This study describes sex-steroid cycles of free-living male and female Bolson tortoises at the Mapimi Biosphere Reserve in northeastern Durango, Mexico. Blood samples were taken at biweekly intervals during a 14 month period by jugular venipuncture, and plasma levels of steroids were determined using radioimmunoassays. …”

Estado actual de la Colección Coleopterológica de la Facultad de Estudios Superiores Zaragoza (CCFES-Z), UNAM Dahkkit: Ordóñez-Reséndiz, María Magdalena, Rodríguez-Mirón, Geovanni Miguel, López-Pérez, Sara

Neobuxbaumia tetetzo size and length of its apical spines in a light gradient under Mimosa luisana, a nurse shrub Dahkkit: Bravo-Mendoza, Mariana, Espinosa-Cantú, Adriana, Castellanos-Vargas, Iván, Cano-Santana, Zenón

“…We studied the effect of a gradient of photosynthetically active radiation (PAR) on two traits of the columnar cactus Neobuxbaumia tetetzo: (1) individuals height and (2) length of its apical thorns under the nurse shrub Mimosa luisana in the Zapotitlán Salinas Valley, Puebla (Mexico). We found a positive correlation between the length of the apical thorns and the distance from the nurse shrub, as well as between the height of N. tetetzo and the length of apical thorns. …”

Reconstruction of fire history and forest structure in mixed pine-oak forest in the Sierra Madre Oriental Dahkkit: González Tagle, Marco Aurelio, Schwendenmann, Luitgard, Jiménez Pérez, Javier, Himmelsbach, Wibke

Los recursos forestales maderables y el desarrollo social y económico en el estado de Durango Dahkkit: Pérez Verdín, Gustavo

“…This paper analyzed some socio-economic conditions of forest-dependent, non-forest dependent, and policy-sensitive municipalities in the state of Durango, Mexico. Knowledge of the socioeconomic relationships among variables that determine the main characteristics of a geographic area is important for planners and decision makers in both public and private sectors. …”

La conservación del bosque en Tetela del Volcan, Morelos, vista a través de un análisis situacional Dahkkit: Chávez-Cortés, Juan Manuel, Ramírez Granados, Gabriela, Medina, Marisol

“…For this reason, the factors that foster and restrict a forest conservation project for SFM planning purposes in the municipality of Tetela del Volcán, Morelos, México, are analyzed and employed. The authors identified “the lack of a valuing culture of forest resources” as the main problem to achieve MFS. …”

Characterization of the understory in dense pine and fir forests of the Nevado de Toluca Dahkkit: Mejía Canales, Ana, Franco-Maass, Sergio, Endara Agramont, Angel Rolando, Ávila Akerberg, Víctor

Fire, mortality and resprouting in forest species at Sierra Norte de Puebla Dahkkit: Gómez-Mendoza, Félix Francisco, Rodríguez-Trejo, Dante Arturo

“…(Q. crassifolia, Q. rugosa and Q. crassipes), Arbutus xalapensis and Alnus acuminata nine months after a forest fire in the ejido Michac, municipality of Chignahuapan, Puebla, Mexico. Were utilized logistic models and the estimations were made with the SAS program. …”

Diversity, genetic structure, and hybridization in Pinus arizonica and P. durangensis populations Dahkkit: Morales-Nieto, Carlos Raúl, Siqueiros-Candia, Minerva, Álvarez-Holguín, Alan, Gil-Vega, Katia del Carmen, Corrales-Lerma, Raúl, Martínez-Salvador, Martín

“…Therefore, this study assessed the diversity, genetic structure, and hybridization capacity in Pinus arizonica y P. durangensis population located in Chihuahua, Mexico. Trees from three populations were analyzed through AFLP (Amplified Fragment Length Polymorphism) molecular markers. …”

Nidificación y alimentación en Liatongus rhinocerulus (Bates) (Coleoptera: Scarabaeidae: Scarabaeinae) Dahkkit: Anduaga, Sofía, Halffter, Gonzalo

“…Nevertheless, after carefully following the feeding preferences of this species throughout the year, over three years ín the la Michílía Biosphere Reserve, located in the Sierra Madre Occidental mountain range (Durango State, México), we found that preferences change over the year, accordíng to the availability of trophic resources. …”

COMPOSICION DE DIETA DE CNEMIDOPHORUS TIGRIS MARMORATUS (SAURIA: TEIIDAE) EN DUNAS DEL CENTRO DEL DESIERTO CHIHUAUHENSE Dahkkit: Gadsden E, Héctor, Palacios Orona, Luis

“…In 1990 we studied the seasonal feeding patterns of the Western Marbied Whiptail (Cnemidophorus tigris marmoratus) in sand dunes of central Chihuahuan Desert, México (26° 50’ N, 103° 49' W). The stomachs of 35 males and 20 females were examined and the Importance valué (relative abundance + relativa volume + prey constancy), Shannon-Wiener diversity Índex and intersexual niche overlap (summer and autumn) of prey Ítems were determinad. …”

Phenolic content and antioxidant action in needle extracts from Pinus cooperi, P. durangensis, P. engelmanii and P. teocote Dahkkit: Sáenz-Esqueda, María de los Ángeles, Rosales-Castro, Martha, Rocha-Guzmán, Nuria Elizabeth, Gallegos-Infante, José Alberto, González-Laredo, Rubén Francisco

“…Coniferous trees are a vast resource in Durango, Mexico forests and a potential nontimber source of these chemicals, thus, our study for analyzing phenolic content and biological activity in needle extracts from Pinus cooperi (COO), P. durangensis (DUR), P. engelmanii (ENG) and P. teocote ( TEO). …”

Chemical composition of leaves and branches of Cedrela odorata L. from two forest plantations as a source of lignocellulosic feedstock Dahkkit: Rosales-Castro, Martha, Honorato-Salazar, J. Amador, Santos-García, Ariana Berenice, Pérez-López, Ma. Elena, Colotl-Hernández, Gertrudis, Sánchez-Monsalvo, Vicente

Sexual reproducion of Quercus macdougallii, an endemic oak of Sierra Juárez, Oaxaca Dahkkit: Clark-Tapia, Ricardo, Mendoza Ochoa, Ana, Aguirre-Hidalgo, Víctor, Antúnez, Pablo, Campos Contreras, Jorge Eduardo, Valencia-A., Susana, Luna-Krauletz, María Delfina, Alfonso-Corrado, Cecilia Liana

Genetic diversity of Oreomunnea mexicana (Juglandaceae), a relict species of the Sierra Juárez cloud forest, Oaxaca Dahkkit: Pascual-Mendoza, Sunem, Clark-Tapia, Ricardo, Campos, Jorge E., Monsalvo-Reyes, Alejandro, Luna-Krauletz, María Delfina, Pacheco-Cruz, Nelly, Gorgonio-Ramírez, Montserrat, Naranjo-Luna, Francisco, Alfonso-Corrado, Cecilia

Home range and movement patterns of the Bolson Tortoise, Gophbrus flavomarginatus Dahkkit: Aguirre, Gustavo, Adest, Gary A., Morafka, David J.

“…A colony of G. flavomarginatus was studied during two consecutivo summers at the Mapimi Biosphere Reserve, Durango, México. Movements and behavior of individuáis living in a 77 ha area were recorded by means of radiotelemetry. …”

Pinus patula var. longepedunculata Loock growth in plantations of the Sierra Sur of Oaxaca Dahkkit: Pedro Cruz, Adrián, Galán Larrea, Rolando, de los Santos Posadas, Héctor M., Valera Venegas, Gricelda, Rivera Nava, Juana Laura, Sandoval García, Celestino

Novel information about the bioactive compound profile, antioxidant and antiproliferative potential of Parkinsonia praecox (Fabaceae) Dahkkit: López-Romero, Julio Cesár, Torres-Moreno, Heriberto, Valencia-Rivera, Dora Edith, Leyva-Peralta, Mario Alberto, Lugo-Sepúlveda, Ramón Efraín, Robles-Zepeda, Ramón Enrique, Rodríguez-Martínez, Karen Lillian, Villegas-Ochoa, Mónica Alejandra, Salazar-López, Norma Julieta, González-Aguilar, Gustavo Adolfo

EFICACIA DE DOS TIPOS DE RECOLECTA PARA REGISTRAR LA DIVERSIDAD DE MELOLÓNTIDOS NOCTURNOS (COLEOPTERA: SCARABAEOIDEA) Dahkkit: Méndez Aguilar, María De Jesús, Castro Ramírez, Adriana E., Alvarado Barrantes, Ricardo, Pacheco Flores, Cutberto, Ramírez Salinas, Concepción

“…Melolonthid specimens were collected from April to June in 2001 and 2002 from streetlamps and from host plants using handheld lights in three agricultural plots in San Cristóbal de Las Casas, Chiapas, Mexico. Data were analyzed by Kruskal-Wallis test, collection method within each site (agricultural plot per year) and overall between sites and collection method. …”