Results 41 to 50 of about 4,489 (121)

EL ENSAMBLE ZOOPLANCTÓNICO DE UN EMBALSE ALTOANDINO TROPICAL. EMBALSE LA GARCÍA (ANTIOQUIA-COLOMBIA)

open access: yesActa Biológica Colombiana
Este es el primer estudio relacionado con el ensamble zooplanctónico en el embalse La García, un embalse altoandino ecuatorial localizado en la región central del departamento de Antioquia (Colombia).
Juan Carlos Jaramillo-Londoño
doaj   +1 more source

Systematic and taxonomic revision of the genus Austrocactus (Cactaceae) based on morphology and genome wide SNP‐data

open access: yesTAXON, Volume 74, Issue 2, Page 386-416, April 2025.
Abstract The post‐Miocene climatic history of arid environments in South America has been identified as a key driver of dispersal and diversification, particularly among plant groups such as Cactaceae. Despite their iconic status, many cactus genera remain poorly understood, and comprehensive taxonomic and systematic revisions using morphological and ...
Tim Böhnert   +6 more
wiley   +1 more source

Incidencia de las sequías sobre las cuencas aportantes a los grandes embalses en Venezuela

open access: yesÁgora de Heterodoxias, 2018
Desde el año 2000 el territorio venezolano ha sido afectado por sequías recurrentes que han causado una merma significativa en las reservas hídricas almacenadas en sus grandes embalses.
Ivis Quiroz-Ruiz, Msc.   +2 more
doaj   +2 more sources

Digestive tract morphology of the Neotropical piscivorous fish Cichla kelberi(Perciformes: Cichlidae) introduced into an oligotrophic Brazilian reservoir

open access: yesRevista de Biología Tropical, 2011
Despite being one of the most well-known cichlid fish of importance to artisanal and sport fishing, and among the largest fishes in the Neotropics, data on digestive tract anatomy of peacock basses (Cichla spp.) are largely lacking, especially for non ...
Alejandra Filippo Gonzalez Neves dos Santos   +2 more
doaj   +2 more sources

Genome‐resolved metagenomics reveals the effect of nutrient availability on bacterial genomic properties across 44 European freshwater lakes

open access: yesEnvironmental Microbiology, Volume 26, Issue 6, June 2024.
We sequenced water samples from 44 lakes by shotgun sequencing, followed by binning them into metagenome‐assembled genomes. The genomic information from these genomes along with nutrient measurements was used for phylogenetic and ecological analysis. Abstract Understanding intricate microbial interactions in the environment is crucial.
Manan Shah   +6 more
wiley   +1 more source

Contribución al conocimiento de cianobacterias de dos embalses de la provincia de Córdoba, Argentina

open access: yesLilloa, 2017
Daga, Claudia; Raquel Murialdo; María C. Fernández Belmonte. 2017. “Contribución al conocimiento de cianobacterias de dos embalses de la provincia de Córdoba, Argentina”. Lilloa 54 (2).
Claudia Daga   +2 more
doaj  

¿Fue el sector eléctrico un gran beneficiario de «la política hidráulica» anterior a la Guerra Civil? (1911-1936)

open access: yesHispania, 2011
El análisis del discurso hidráulico español constituye un clásico de nuestra historiografía al que, últimamente, se han añadido fecundas investigaciones sobre las realizaciones de la política hidráulica en algunas cuencas. Asimismo, en los últimos veinte
Isabel Bartolomé Rodríguez
doaj   +1 more source

Wild relatives of potato (Solanum L. sec. Petota) poorly sampled and unprotected in Colombia

open access: yesCrop Science, Volume 64, Issue 1, Page 225-243, January/February 2024.
Abstract Wild potato relatives (Solanum L. sec. Petota) play a vital role in crop improvement, understanding crop evolution, and conserving potato diversity. However, these invaluable resources are often neglected and underutilized and are susceptible to threats such as climate change, urbanization, and agricultural expansion. Little is known about the
Carlos E. González‐Orozco   +7 more
wiley   +1 more source

Redes y movimientos sociales en contra de la construcción de presas en México. El caso del Movimiento Mexicano de Afectados por las Presas y en Defensa de los Ríos.

open access: yesRevista Espaço Acadêmico, 2015
La construcción de presas en México ha supuesto la generación de importantes conflictos y de numerosos movimientos sociales, a través de los cuales comunidades afectadas, organizaciones no gubernamentales, activistas y especialistas, manifiestan su ...
Anahí Copitzy Gómez Fuentes
doaj  

Notes on the ecology and distribution of a water flea complex (Anomopoda, Daphniidae) revealed by new DNA barcodes in the Iberian Peninsula

open access: yesZoologica Scripta, Volume 53, Issue 1, Page 98-112, January 2024.
Abstract Available DNA barcodes of freshwater zooplankton are scarce in regions like the Iberian Peninsula, which harbours many rare and endemic species and is considered a hotspot of crustacean biodiversity. Recently, a new species of Ceriodaphnia (Cladocera: Daphniidae) was described using morphological analysis of specimens in the Mediterranean ...
Charo López‐Blanco   +4 more
wiley   +1 more source

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