Results 41 to 50 of about 454 (132)

A first characterization of the leaflet endophytic prokaryotic community in Dioon cycads

open access: yesPlant Species Biology, Volume 40, Issue 6, Page 547-555, November 2025.
This study presents the first characterization of leaflet endophytic prokaryotic communities in Mexican cycads of the genus Dioon. Using 16S rRNA metabarcoding, we describe the composition and diversity of foliar bacterial communities across species and biogeographic regions, highlighting patterns potentially shaped by environmental conditions.
Gonzalo Contreras‐Negrete   +4 more
wiley   +1 more source

Deep divergences and extensive phylogeographic structure in a clade of lowland tropical salamanders

open access: yesBMC Evolutionary Biology, 2012
Background The complex geological history of Mesoamerica provides the opportunity to study the impact of multiple biogeographic barriers on population differentiation.
Rovito Sean M   +4 more
doaj   +1 more source

Progress in the study of dioecy in Mexican cycad species and its implications for conservation

open access: yesPlant Species Biology, Volume 40, Issue 6, Page 556-571, November 2025.
Cycads are endangered dioecious plants of great ornamental value that have a long period of sexual maturity. Therefore, it is crucial to have methods for early sex determination that can help to develop effective strategies for their conservation. Abstract Dioecy is a system of sexual reproduction in plants, characterized by the spatial separation of ...
Lourdes Georgina Iglesias Andreu   +2 more
wiley   +1 more source

Ants and Extrafloral Nectary‐Bearing Plants

open access: yes
The Bulletin of the Ecological Society of America, Volume 107, Issue 1, January 2026.
Samuel Novais   +5 more
wiley   +1 more source

Evolutionary history of Middle American Rhamdia (Siluriformes: Heptapteridae) inferred from comparative mitogenomic data: Insights on historical biogeography and cave colonization in the group

open access: yesJournal of Systematics and Evolution, Volume 63, Issue 6, Page 1501-1518, November 2025.
Investigating the systematics and biogeography of Neotropical catfishes of the genus Rhamdia refined phylogenetic hypotheses, including deep paraphyly of Rhamdia laticauda, supported northward dispersal catalyzed by emergence of the Panamanian Isthmus and imply that cave colonization is widespread, convergent, and recent, with established cave‐dwelling
Jairo Arroyave   +6 more
wiley   +1 more source

El género Ormosia Jacks. (Leguminosae, Papilionoideae) en el estado de Guerrero, México

open access: yesActa Botanica Mexicana, 2015
Se registra por primera vez la presencia del género Ormosia para el estado de Guerrero, México, con dos especies: Ormosia carinata y O. oaxacana (Leguminosae, Papilionoideae, tribe Sophoreae).
Ramiro Cruz-Durán   +1 more
doaj   +1 more source

Quasi‐Constant Time Gap in Multiple Rings of Elves

open access: yesEarth and Space Science, Volume 12, Issue 10, October 2025.
Abstract We present evidence that the time delay between the multiple rings of elves is not caused by the ground reflection of the electromagnetic pulse produced by intracloud lightning. To investigate temporal differences of multi‐elves, we analyzed data from four storms occurring at various times and distances from the Pierre Auger Observatory in ...
The Pierre Auger Collaboration
wiley   +1 more source

El ecoturismo en las reservas de la biósfera: Prácticas y actitudes hacia la conservación

open access: yesPASOS Revista de Turismo y Patrimonio Cultural, 2019
El ecoturismo se ha reconocido como una opción viable para integrar la conservación y el desarrollo socioeconómico en las Áreas Naturales Protegidas. Sin embargo, es importante realizar investigaciones empíricas que comprueben la viabilidad economica y ...
Kennedy Obombo Magio   +1 more
doaj   +1 more source

The Evolution of the Cocos‐North America‐Caribbean Triple Junction From Detrital Zircon Analysis

open access: yesTectonics, Volume 44, Issue 8, August 2025.
Abstract The tectonic framework and Cenozoic evolution of the Cocos–North America–Caribbean (Co–NA–Ca) triple junction remain subjects of major geological importance due to their complexity and regional impact. New U–Pb zircon geochronology of detrital sediments and detailed structural and geomorphic mapping from southern Chiapas, Mexico, provide ...
Mattia Parolari   +7 more
wiley   +1 more source

Guadua tuxtlensis (Poaceae: Bambusoideae: Bambuseae: Guaduinae), una nueva especie inadvertida de la región de Los Tuxtlas, Veracruz, México

open access: yesBotan‪ical Sciences, 2014
Se describe e ilustra Guadua tuxtlensis, una especie nueva de la región de Los Tuxtlas, de los Municipios de Catemaco y San Andrés Tuxtla, Estado de Veracruz, México.
Ximena Londoño, Eduardo Ruíz-Sánchez
doaj   +1 more source

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