Biosistemática del género Petrejoides Kuwert (Coleoptera, Lamellicornia, Passalidae) Auteurs: Castillo, Camelia, Reyes Castillo, Pedro

Benthic seaweed from Isla Cozumel, Quintana Roo, Mexico Auteurs: Mateo-Cid, Luz Elena, Mendoza-Gonzalez, Angela Catalina

“…Species diversity was compared for two different climatic seasons, the rainy and the dry, during 1970, 1983, 1984 and 1985. Differences in the total number of species found in each climatic seasons were significant. …”

Algas marinas bentónicas de Isla Mujeres, Quintana Roo, México Auteurs: Mendoza-Gonzalez, A. Catalina, Mateo-Cid, Luz Elena

“…Ten spedes of Cyanophyceae, 122 spedes of Rhodophyceae, 33 spedes and 1 variety of Phaeophyceae, 6 spedes of Bacillariophyceae and 74 spedes, 1 variety and 10 forms of Chlorophyeeae were identified.Spedes diversity was compared for two different dimatic seasons, the rainy and the dry, during 1983, 1984, 1985 and 1987. Differences in the total number of species found in each dimatic seasons were significant. …”

Paul Arnold Fryxell (1927-2011) Auteurs: Wendt, Tom

Estrategias de recuperación de selvas en dos ejidos de Quintana Roo, México Auteurs: Rebollar Domínguez, Silvia, Santos Jiménez, Victoria, Sánchez Aguilar, Rodolfo Luis

“…With the purpose of attempting to solve the serious deforestation problem in Quintana Roo, the “Plan Piloto Forestal” was created in 1984 to be carried out in the state´s central and southern regions; from this project, civil organizations were born. …”

Mycorrhizas as a tool for ecological restoration Auteurs: Carrillo-Saucedo, Silvia Margarita, Puente-Rivera, Jonathan, Montes-Recinas, Saraí, Cruz-Ortega, Rocío

“…The main purpose of this work was to analyze the general aspects of mycorrhizal symbiosis of species native to Mexico, to be used as a tool for soil recovery Methods: A comprehensive review of 140 original articles, experimental and synthesis papers published between 1984 and 2019 was carried out. Studies performed in Mexico with native species and with information on the different inoculation methods reported, and with ecological relevance were selected. …”

Biomechanics of trees: growth, anatomy and morphology Auteurs: Vargas-Silva, Gustavo

Especies de Psocoptera (Insecta), de las Islas María Madre y San Juanito, Nayarit Auteurs: García Aldrete, Alfonso Neri

“…Del 26 al 30 de marzo de 1984 se completaron 24 horas/ hombre de colecta de insectos en María Madre, y 6 horas/hombre de colecta en San Juanito. …”

Palinofagia de los murcielagos del genero Glossophaga (Mammalia: Chiroptera) en México Auteurs: Sánchez Casas, Nansy, Alvarez, Ticul

Determinación de componentes químicos de la madera de cinco especies de encino del estado de Puebla Auteurs: Honorato Salazar, J. Amador, Hernández Pérez, Jorge

“…Las cantidades de componentes químicos presentes en la mezcla de madera de albura y duramen de las especies se encuentran en el rango de 54.24 a 56.72% para la "-celulosa, de 19.84 a 22.35% para la lignina, de 18.37 a 21.64% para los pentosanos, de 3.84 a 5.24% para los solubles en etanol-benceno, de 0.87 a 1.38% para la ceniza, de 0.0040 a 0.0096% para el sílice, y de 1.17 a 3.46% para los taninos. …”

Avifauna de la Reserva de la Biosfera "Montes Azules", Selva Lacandona, Chiapas, México Auteurs: González García, Fernando

Uniola paniculata (Poaceae, Chloridoideae, Unioliinae), new record for the flora of the Yucatan Peninsula, Mexico Auteurs: Tovar-Montalvo, Daniel Alexis, Medina-Acevedo, Monserrat, García-Bielma, Miguel Angel, Guerra-Santos, Jesús Jaime