Contribución al conocimiento del endemismo de la flora vascular en Veracruz, México
Se elaboró una lista de taxa endémicos de la flora vascular de Veracruz. Se registraron 94 géneros de 56 familias que contienen 131 especies y 10 taxa subespecíficos con distribución restringida a los límites del estado.
Gonzalo Castillo-Campos +3 more
doaj
Strobilus and seed production of Dioon edule (Zamiaceae) in a population with low seedling density in San Luis Potosí, Mexico [PDF]
"We describe strobilus and seed development in a Dioon edule (chamal, palma, dameu') population characterized by low seedling and high adult tree density, in order to improve conservation decisions for this endangered cycad species.
Flores Rivas, Joel David +1 more
core +1 more source
Demografía y estructura poblacional de Dioon angustifolium (Zamiaceae) en el noreste de México
Antecedentes: Dioon angustifolium es una especie endémica que se distribuye en el extremo noreste de la Sierra Madre Oriental. Se clasifica como especie en peligro de extinción debido a actividades antrópicas como la extracción ilegal con fines ...
Gabriel Rubio-Méndez +4 more
doaj +1 more source
There are few genera of butterflies that feed on cycads. Among them the genus Eumaeus (Lycaenidae) presents aposematic coloration in all its life stages.
Raúl Contreras-Medina +2 more
doaj
Ressources alimentaires non conventionnelles [PDF]
Unconventional Food Resources. Concepts of ethnobotany, ethnozoology and ethnoecology are defined and their respective development recounted. The geographic frame is afterwards specified: Tropical Africa.
Malaisse, F.
core
Trips (Thysanoptera: Thripidae) Yang Berasosiasi Dengan Tanaman Hortikultura Di Jawa Barat Dan Kunci Identifikasi Jenis [PDF]
Most of thrips from Thripidae family are pests on horticultural crops. To date, there are no records in the species richness of thrips in horticultural crops.
Hidayat, P. (Purnama) +3 more
core
El objetivo de este trabajo fue conocer la estructura, heterogeneidad de estadios y el patrón de dispersión espacial de diez poblaciones de Dioon holmgrenii De Luca, Sabato & Vázq. Torres, especie en peligro de extinción y endémica al sur de Oaxaca, con
Mario Valerio Velasco García +6 more
doaj +1 more source
Effects of shade on germination traits of the endangered cycad Dioon edule (Zamiaceae)
The endangered cycad Dioon edule requires shade provided by filtered sunlight under the canopy of trees or maternal plants during initial growth stages.
Laura Yáñez-Espinosa, Joel Flores
doaj +1 more source
Fire responses of bushland plants after the January 1994 wildfires in northern Sydney [PDF]
In early January 1994 wildfires burned areas of bushland in northern Sydney (lat 33° 45’ S, long 151° 05’ E) in coastal south-eastern Australia. This paper reports observations of the fire responses for 828 species of bushland plants – 576 native species
Kubiak, P. J.
core
Gymnosperms from the Middle Triassic of Antarctica: The First Structurally Preserved Cycad Pollen Cone [PDF]
The first permineralized cycad pollen cone is described from the lower Middle Triassic of Antarctica. The cone is characterized by helically arranged, wedge‐shaped microsporophylls, each with five or more spinelike projections extending from the rhomboid
Klavins, Sharon D. +3 more
core +1 more source

