Results 31 to 40 of about 55,210 (181)

The flowering transition pathways converge into a complex gene regulatory network that underlies the phase changes of the shoot apical meristem in Arabidopsis thaliana

open access: yesFrontiers in Plant Science, 2022
Post-embryonic plant development is characterized by a period of vegetative growth during which a combination of intrinsic and extrinsic signals triggers the transition to the reproductive phase.
Elva C. Chávez-Hernández   +5 more
doaj   +1 more source

Alpha and beta phylogenetic diversities jointly reveal ant community assembly mechanisms along a tropical elevational gradient

open access: yesScientific Reports, 2022
Despite the long-standing interest in the organization of ant communities across elevational gradients, few studies have incorporated the evolutionary information to understand the historical processes that underlay such patterns.
Gibran Renoy Pérez-Toledo   +5 more
doaj   +1 more source

Efecto de la ganadería y la variación estacional sobre la composición florística y la biomasa vegetal en los humedales de la costa centro oeste del Golfo de México

open access: yesActa Botanica Mexicana, 2017
Antecedentes y Objetivos: Los humedales son ecosistemas altamente productivos que aportan diversos servicios ecosistémicos; sin embargo, también son de los más amenazados debido a actividades humanas como la agricultura y ganadería. México ha perdido 62%
Karla Rodríguez-Medina   +2 more
doaj   +1 more source

Spatial variation of physicochemical parameters in a constructed wetland for wastewater treatment: An example of the use of the R programming language

open access: yesCuadernos de investigación UNED, 2021
Introduction: The implementation of wastewater treatment systems such as constructed wetlands has a growing interest in the last decade due to its low cost and high effectiveness in treating industrial and residential wastewater.
Junior Pastor Pérez-Molina   +11 more
doaj   +1 more source

Microbial Activity Response to Solar Radiation across Contrasting Environmental Conditions in Salar de Huasco, Northern Chilean Altiplano [PDF]

open access: yes, 2016
Indexación: Web of Science; Scopus.In high altitude environments, extreme levels of solar radiation and important differences of ionic concentrations over narrow spatial scales may modulate microbial activity.
Dorador, C   +8 more
core   +2 more sources

La sociología ante el medio ambiente [PDF]

open access: yes, 1991
Este artículo presenta, desde una perspectiva histórica que se remonta al primer tercio de siglo, las contribuciones de la sociología al estudio de las relaciones, socialmente significativas, de los seres humanos con el ...
Rojo, Teresa
core   +2 more sources

Enseñar los cambios ecológicos en la secundaria : un reto en la transposición didáctica [PDF]

open access: yes, 2005
En este trabajo se estudia la distancia en la estructura y en los signifi cados que hay entre la ciencia de los científicos y la de los libros de texto con respecto a la teoría de la sucesión.
Gil Quílez, María José   +1 more
core   +2 more sources

El estudio de los ecosistemas terrestres: problemas y perspectivas [PDF]

open access: yes, 1980
Ponencia de introducción a la sesión sobre Ecología Terrestre desarrollada en la Societat Catalana de Biología el 13 de Diciembre de 1979.Theoretical development in terrestrial ecology found major difficulties in following the advances of aquatic ...
Terradas Serra, Jaume
core   +2 more sources

O conceito de função na ecologia contemporânea

open access: yesRevista de Filosofia, 2013
O discurso funcional é tanto ubíquo quanto central na ecologia contemporânea, principalmente no contexto das pesquisas sobre biodiversidade e funcionamento ecossistêmico, que emergiram nos anos 1990 em meio à crise da biodiversidade.
Nei Freitas Nunes-Neto   +2 more
doaj   +1 more source

Hormonal Regulation of Stem Cell Proliferation at the Arabidopsis thaliana Root Stem Cell Niche

open access: yesFrontiers in Plant Science, 2021
The root stem cell niche (SCN) of Arabidopsis thaliana consists of the quiescent center (QC) cells and the surrounding initial stem cells that produce progeny to replenish all the tissues of the root.
Mónica L. García-Gómez   +7 more
doaj   +1 more source

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