Results 81 to 90 of about 90,494 (225)

A preliminary phylogeographic study of Flavopunctelia and Punctelia inferred from rDNA ITS-sequences [PDF]

open access: yes, 2005
A preliminary phylogeny of the genera Flavopunctelia and Punctelia is presented. Genus and species delimitations have been investigated using ITS rDNA-sequencing of populations from different continents.
Adler, Monica Teresa   +5 more
core  

WABAD: A world annotated bird acoustic dataset for passive acoustic monitoring

open access: yesEcology, Volume 107, Issue 2, February 2026.
Abstract Under the current global biodiversity crisis, there is a need for automated and noninvasive monitoring techniques that can gather large amounts of data cost‐effectively at various ecological scales, from local to large spatial scales. These data can then be analyzed to inform stakeholders and decision‐makers.
Cristian Pérez‐Granados   +101 more
wiley   +1 more source

Científicos e intelectuales, una nueva cultura política: José Cuatrecasas y las colecciones de flora tropical

open access: yesAsclepio: Revista de Historia de la Medicina y de la Ciencia, 2019
Este trabajo quiere mostrar una faceta del papel desempeñado por el coleccionismo y las colecciones científicas en la formación de los naturalistas durante la Edad de Plata de la ciencia española. El objetivo es evidenciar que la Junta para Ampliación de
José María López Sánchez
doaj   +1 more source

Revision of Manettia (Rubiaceae) in Paraguay

open access: yesNordic Journal of Botany, Volume 2026, Issue 2, February 2026.
Manettia Mutis is a Neotropical genus comprising over 100 species, many of which are only known from their original descriptions or, at most, from revisions dating back over 100 years. Recent review studies have remained unpublished for several years. Conventional taxonomic methods are followed.
Silvana Yasmin Gauto   +2 more
wiley   +1 more source

Sobre Ignac Tirš, Pinturas de la Antigua California y de México: Códice Klementinum de Praga

open access: yesHistoria Mexicana El Colegio de México, 2018
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Bernardo García Martínez
doaj   +1 more source

New circumscription of the tribe Leucocoryneae (Amaryllidaceae, Allioideae) [PDF]

open access: yes, 2014
Sobre la base de estudios morfológicos, anatómicos y filogenéticos de la subfamilia Allioideae, se presenta una nueva circunscripción de la tribu Leucocoryneae que comprende seis géneros americanos:Beauverdia, Ipheion, Leucocoryne, Nothoscordum ...
Arroyo Leuenberger, Silvia C.   +2 more
core   +1 more source

A new species of Amphitecna (Bignoniaceae) endemic to the mountain karst forests of southern Mexico

open access: yesNordic Journal of Botany, Volume 2026, Issue 2, February 2026.
Amphitecna brevicalyx (Bignoniaceae), a new tree species endemic to Mexico is described and illustrated. Its cauliflorous inflorescences, featuring a single flower per shoot and funnelform corollas without a transverse fold in the throat, place it within the Amphitecna macrophylla group.
Leopoldo Hurtado‐Reveles   +1 more
wiley   +1 more source

“Instrúyete y tu suerte variará”. La Botánica en El Economista Mexicano, 1886-1892 / “Educate Yourself and Your Luck will Change”. Botany in The Mexican Economist, 1886-1892

open access: yesValenciana, 2017
Al final del siglo XIX, en la prensa mexicana se publicaron nume- rosos escritos científicos destinados a educar al lector con miras a modernizar a la sociedad y la economía. El objetivo de la investi- gación es comprender el interés de los redactores de
Rodrigo Antonio Vega y Ortega Baez
doaj   +1 more source

A new species from an inselberg in the Brazilian Atlantic forest: Stachytarpheta forzzae (Verbenaceae), supported by morphological, palynological and anatomical evidence

open access: yesNordic Journal of Botany, Volume 2026, Issue 2, February 2026.
We describe Stachytarpheta forzzae, a new species from an inselberg located in the municipality of Guaratinga, state of Bahia, within the Brazilian Atlantic forest. Morphologically, it resembles S. sprucei, the only other species of the genus known to inhabit inselbergs.
Pedro Henrique Cardoso   +5 more
wiley   +1 more source

Incesto, aves y conchas. Aproximación a la lectura de algunos mitos de Yopo

open access: yesMaguaré, 2004
En este artículo se desarrollarán algunos elementos relacionados con la simbología del yopo refiriendo datos recogidos entre los indígenas Guayabero del poblado La Sal (Departamento del Meta),en cercanías al rio Guaviare.
Salime Cure Valdivieso
doaj   +2 more sources

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