Results 61 to 70 of about 44,081 (220)

Spatial Representativeness of MexFlux as a Regional FLUXNET Network

open access: yesJournal of Geophysical Research: Biogeosciences, Volume 130, Issue 12, December 2025.
Abstract Environmental observatory networks are fundamental in advancing scientific understanding of biogeochemical processes. FLUXNET is a global network of regional eddy covariance networks that measure ecosystem‐scale exchanges of greenhouse gases (e.g., CO2, CH4, H2O) and energy between the biosphere and the atmosphere.
Rodrigo Vargas   +21 more
wiley   +1 more source

Does Karyotype Structure Co‐Occurrence Patterns in a Chromosomally Diverse and Species‐Rich Clade of Lizards (Genus Sceloporus)?

open access: yesJournal of Biogeography, Volume 52, Issue 12, December 2025.
ABSTRACT Aim We investigated the biogeographic consequences of chromosomal speciation, or structural changes in chromosome arrangement that lead to reproductive isolation, an intriguing speciation mechanism with implications for the phylogenetic and geographic distribution of species and chromosomal diversity. Location. North and Central America. Taxa.
Isaac W. Krone, Erin P. Westeen
wiley   +1 more source

La familia Podocarpaceae en el estado de Hidalgo, México Family Podocarpaceae in the state of Hidalgo, Mexico

open access: yesRevista Mexicana de Biodiversidad, 2006
Una especie de Podocarpaceae, Podocarpus reiche, se registra para el estado de Hidalgo. Se incluye la descripción del género y la especie, datos de distribución geográfica y hábitat en el estado y se citan los ejemplares de herbario examinados.
Raúl Contreras-Medina   +2 more
doaj  

Una nueva especie de Deiregyne (Orchidaceae: Spiranthinae) de Hidalgo, México

open access: yesBotan‪ical Sciences, 2013
Se describe e ilustra a Deiregyne callifera Salazar & Hernández-Cardona, nueva especie de orquídea de las estribaciones de la Sierra Madre Oriental en el estado de Hidalgo, México. La nueva especie es similar a D. eriophora (B.L.Rob.
Gerardo A. Salazar   +2 more
doaj   +1 more source

Pruebas de regeneración artificial de Pinus pseudotrobus en localidades degradadas por incendios [PDF]

open access: yes, 2006
El presente trabajo se realizó en dos sitios de la Sierra Madre Oriental, de 2000 a 2003. Se seleccionaron dos áreas incendiadas, una en cada localidad, se consiguió una especie disponible: Pinus pseudostrobus Lindl.
Aguirre Calderón, Óscar Alberto   +5 more
core  

Acclimatation of three co-occurring tree species to water stress and their role as site indicators in mixed pine-oak forests in the Sierra Madre Oriental, Mexico [PDF]

open access: yes, 2011
Water availability and salt excess are limiting factors in Mexican mixed pine-oak forest. In order to characterise the acclimatation of native species to these stresses, leaf water (Psi(w)) and osmotic potentials (Psi(s)) of Juniperus flaccida, Pinus ...
Aguirre Calderón, Óscar Alberto   +7 more
core   +1 more source

Velascoa (Crossosomataceae), un género nuevo de la Sierra Madre Oriental de México

open access: yesActa Botanica Mexicana, 1997
Con base en ejemplares colectados en el extremo NE del estado de Querétaro, se describe Velascoa recondita como género y especie nuevos. Se le considera como miembro de Crossosomataceae en función de su carácter de arbusto micrófilo y rupícola, de su flor con el gineceo de dos carpelos libres, así como de similitudes en las particularidades del fruto y
Graciela Calder\u00F3n de Rzedowski   +1 more
openaire   +4 more sources

Evaluación del grado de conservación de las cuencas hidrográficas de Nuevo León, México

open access: yesRevista Mexicana de Ciencias Forestales, 2018
Se evaluó la condición de conservación de las cuencas hidrográficas de Nuevo León, mediante el análisis de 48 variables ambientales para construir cuatro índices.
César Cantú Ayala   +3 more
doaj   +1 more source

Spatial distribution pattern of the endangered endemic cycad Ceratozamia fuscoviridis (Zamiaceae) in central Mexico

open access: yesPlant Species Biology, Volume 40, Issue 6, Page 572-583, November 2025.
Spatial distribution pattern were studied for Ceratozamia fuscoviridis, an endangered species in Mexico, based on Ripley's K t and K 12 analysis. Clumped spatial distribution patters was found in individuals of all populations, suggesting low interaction with predators/dispersers and/or evidence of suitable microsites for cycads.
María Teresa Pulido Silva   +4 more
wiley   +1 more source

Admixture Mapping Reveals Evidence for Multiple Mitonuclear Incompatibilities in Swordtail Fish Hybrids

open access: yesMolecular Ecology, Volume 34, Issue 22, November 2025.
ABSTRACT How barriers to gene flow arise between closely related species is one of the oldest questions in evolutionary biology. Classic models in evolutionary biology predict that negative epistatic interactions between variants in the genomes of diverged lineages, known as hybrid incompatibilities, will reduce viability or fertility in hybrids.
Nemo V. Robles   +14 more
wiley   +1 more source

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