Results 51 to 60 of about 24,141 (211)

Reinstatement and generic reassignment of Phyllanthus asteranthos Croizat (Phyllanthaceae) based on living plant observations and specimen analysis

open access: yesNordic Journal of Botany, Volume 2026, Issue 7, July 2026.
Phyllanthus asteranthos Croizat has been treated as a synonym of P. pulcher Wall. ex Müll. Arg. (syn. Nymphanthus glaucescens (Miq.) R.W.Bouman) since 1987. Through detailed morphological observations of living plants and critical examinations of type materials and additional specimens, this study revealed that the two taxa are morphologically very ...
Feng Yang   +2 more
wiley   +1 more source

Habitat‐based spatial patterns enable realistic reconstruction of plant spatial arrangements across complex landscapes

open access: yesOikos, Volume 2026, Issue 7, July 2026.
Spatially explicit individual‐based models provide a powerful way to explore spatial dynamics when direct observation is not feasible. But for many ecological applications, these models require detailed data on the initial spatial arrangement and traits of individuals – information rarely available in large, heterogeneous or novel landscapes.
Brayan Morera   +4 more
wiley   +1 more source

La compleja institucionalidad de la infraestructura vial nacional en Costa Rica, 1998-2014

open access: yesRevista Nacional de Administración, 2017
En la Administración Figures Olsen (1994- 1998) la política de la infraestructura vial nacional fue redefinida para que la obra vial nacional fuera llevada a cabo con una mayor participación privada en deterioro del protagonismo público, mediante la ley ...
Jorge Alberto Vásquez Rodríguez
doaj   +1 more source

Droughts and human impact in the ancient Uaymil region of the Maya lowlands inferred from a 2800‐year sedimentary archive at Lake Kaná, Mexico

open access: yesBoreas, Volume 55, Issue 3, Page 768-789, July 2026.
The relationship between the climate and societal transformation in Maya lowlands has long been debated, particularly the role of drought in shaping the civilization trajectory during the Classic Period. A high‐resolution, multi‐proxy, geochemical record from Lake Kaná, located in the underexplored Uaymil region of the Yucatán Peninsula in Mexico ...
Haydar B. Martinez‐Dyrzo   +5 more
wiley   +1 more source

Imaging Point Source Groundwater Discharges in a Confined Coastal Aquifer Using Electrical Resistivity

open access: yesGroundwater, Volume 64, Issue 4, Page 405-421, July/August 2026.
Marine electrical resistivity tomography (ERT) is applied to characterize point‐source submarine groundwater discharge (PSGD) along NW Yucatán. ERT observations and forward modeling constrain conduit detectability under varying hydrogeological conditions.
Mariana Gómez‐Nicolás   +6 more
wiley   +1 more source

Plan general de carreteras de Andalucía 1996-2007. Avance

open access: yes, 1996
Andalucía. Consejería de Obras Públicas y Transportes; Andalucía. Dirección General de Carreteras; Andalucía.
Andalucía. Dirección General de Carreteras
core   +2 more sources

Carreteras sobre dunas

open access: yesInformes de la Construcción, 1962
Al oeste de Yuma, estado de Arizona (EE. UU.), se extiende una amplia zona desértica formada por dunas de arena cuyas partículas tienen un diámetro medio de décimas de milímetro. Esta zona tiene una longitud de unos 70 km, y anchura similar. En esta región de dunas, los vientos de velocidades de 80 a 90 km/h son casi constantes en los meses de marzo y ...
openaire   +4 more sources

Unveiling Marine Vesicle Uptake in Vibrio spp: Taxonomic and Environmental Insights

open access: yesMicrobiologyOpen, Volume 15, Issue 3, June 2026.
Extracellular vesicles are involved in diverse functions in nature from microbial interactions to pathogenesis. Here, we investigate whether taxonomy represents a boundary that constrains the uptake of vesicles between different marine bacteria including ubiquitous Vibrio spp. involved in marine organism diseases, such as corals.
Nadefa Adda Nekrouf   +4 more
wiley   +1 more source

Circular 6/95: normas para la redacción de proyectos de construcción de carreteras

open access: yes, 1995
Andalucía. Consejería de Obras Públicas y Transportes; Andalucía.
Andalucía. Consejería de Obras Públicas y Transportes   +1 more
core   +1 more source

La erosión hídrica en las carreteras y caminos de España: ¿un factor de retraso en nuestro desarrollo?

open access: yesEstudios Geográficos, 2004
[es] La erosión hídrica en las carreteras y caminos de España: ¿Un factor de retraso en nuestro desarrollo? El tránsito por carreteras y caminos de España ha sido dificultoso a través de nuestra historia, como consecuencia de la accidentada orografía y ...
Joaquín Navarro Hevia
doaj   +1 more source

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