Results 41 to 50 of about 283 (121)

Shaping species with ephemeral boundaries: the distribution and genetic structure of desert tortoise (Gopherus morafkai) in the Sonoran Desert region

open access: yesJournal of Biogeography, Volume 43, Issue 3, Page 484-497, March 2016., 2016
Abstract Aim We examine the role biogeographical features played in the evolution of Morafka's desert tortoise (Gopherus morafkai) and test the hypothesis that G. morafkai maintains genetically distinct lineages associated with different Sonoran Desert biomes. Increased knowledge of the past and present distribution of the Sonoran Desert region's biota
Taylor Edwards   +6 more
wiley   +1 more source

A Phytogeographical Classification of the North American Pacific Coast Based on Climate, Vegetation and a Floristic Analysis of Vascular Plants

open access: yesJournal of Botany, Volume 2009, Issue 1, 2009., 2009
This study was designed to explore floristic variation along the Pacific coast from Cook Inlet, Alaska, to the southern tip of Baja California, Mexico. Data corresponding to 965 phytosociological relevés (including 686 vascular plants) obtained by sampling 279 coastal sites were examined.
Manuel Peinado   +4 more
wiley   +1 more source

Estructura y diversidad arbórea de bosques tropicales caducifolios secundarios en la Reserva de la Biosfera Sierra de Huautla, Morelos

open access: yesRevista Mexicana de Biodiversidad, 2018
Se estudió la recuperación en riqueza, composición, estructura y diversidad arbórea en 3 condiciones de bosque tropical caducifolio secundario con diferente tiempo de abandono (C35, C45 y C65 años) en el sureste del estado de Morelos.
Leonardo Alejandro Beltrán-Rodríguez   +7 more
doaj   +1 more source

xPachebergia (Cactaceae), a nothogenus from western Mexico xPachebergia (Cactaceae), un notogénero del occidente de México

open access: yesRevista Mexicana de Biodiversidad, 2008
xPachebergia (Backebergia x Pachycereus), a new nothogenus from western Mexico, is proposed. Stem and seed morphology of this poorly known taxon from dry to very dry deciduous tropical forest in the Balsas River Basin, Guerrero, are described and ...
Salvador Arias, Teresa Terrazas
doaj  

Pollen morphology of Pachycereus weberi (Cactaceae): an evaluation of variation in pollen size

open access: yesPlant Systematics and Evolution, 2012
Pollen morphology within a single plant species has been regarded as a relatively constant trait; it has, thus, been used as a taxonomic character. Numerous palynological studies have described the morphology of pollen from Cactaceae and from other families of plants.
Figueroa Castro, Dulce María   +2 more
openaire   +2 more sources

El cardón Pachycereus pringlei, nuevo hospedero para Scyphophorus acupunctatus (Coleoptera: Curculionidae) en Baja California Sur, México The giant cardon cactus Pachycereus pringlei, a new host for Scyphophorus acupunctatus (Coleoptera: Curculionidae) in Baja California Sur, Mexico

open access: yesRevista Mexicana de Biodiversidad, 2011
Se presenta el primer registro de una cactácea, Pachycereus pringlei (cardón), especie dominante del matorral xerófilo de la península de Baja California, como hospedero de Scyphophorus acupunctatus (picudo del agave).
Yolanda Maya   +2 more
doaj  

Distribution and Biology of the Primitive Dry‐Wood Termite Pterotermes Occidentis (Walker) (Kalotermitidae)

open access: yes, 1966
Psyche: A Journal of Entomology, Volume 73, Issue 3, Page 165-179, 1966.
W. L. Nutting
wiley   +1 more source

Efectos de la exclusión de ganado en el reclutamiento del cardón (Pachycereus pringlei, Cactaceae) en el sur de la península de Baja California, México

open access: yesActa Botanica Mexicana
Antecedentes y Objetivos: El cardón (Pachycereus pringlei) es una cactácea columnar emblemática del Desierto Sonorense, región donde desde hace siglos la ganadería de libre pastoreo ha estado presente, tanto en la península de Baja California como en ...
Pedro P. Garcillán   +1 more
doaj   +1 more source

Morpho-anatomy of seedlings in Pachycereeae species: until when are they seedlings?

open access: yesBotan‪ical Sciences, 2011
Morpho-anatomy of species in Tribe Pachycereeae seedlings is described and compared with the aim to find differences between the initial growth and establishment stages and to determine the point in time of the change from seedling to young plant.
Sofía Loza-Cornejo, Teresa Terrazas
doaj  

Spatial Variation in the Community of Insects Associated With the Flowers ofPachycereus weberi(Caryophyllales: Cactaceae)

open access: yesEnvironmental Entomology, 2014
The positive relationship between productivity and species diversity is well-known. Insect communities associated with the flowers of Cactaceae species represent an interesting system to explore the productivity-diversity relationship because branches facing the equator receive more photosynthetically active radiation and have higher productivity. Thus,
Figueroa Castro, Dulce María   +3 more
openaire   +3 more sources

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