Results 41 to 50 of about 328 (124)

Ciencia en el Madrid del “No Pasarán”. La protección de las colecciones de Historia Natural y el Instituto Nacional de Ciencias Naturales durante la Guerra Civil

open access: yesAsclepio: Revista de Historia de la Medicina y de la Ciencia, 2019
Los edificios culturales y científicos de Madrid se vieron muy perjudicados por la guerra civil española (1936-1939). Madrid fue una ciudad asediada y bombardeada por los sublevados.
Francisco Pelayo
doaj   +1 more source

Written in bones: palaeoclimate histotaphonomic history inferred from a complete Megatherium skeleton preserved in the Atacama Desert

open access: yesPalaeontology, Volume 68, Issue 4, July/August 2025.
Abstract A nearly complete and relatively well‐preserved skeleton of the giant ground sloth Megatherium sp. in the hyperarid core of the Atacama Desert reveals how climate related taphonomic processes drastically transformed these remains over time.
Luisa Straulino Mainou   +14 more
wiley   +1 more source

Evaluación de la efectividad antimicrobiana de la luz UV-C 222 nm como estrategia de tratamiento para la preservación de especímenes biológicos en líquido de la Colección “José Ricardo Cure Hakim” de la Universidad Militar Nueva Granada

open access: yesGe-conservación
Las colecciones biológicas son registros de biodiversidad. No obstante, el biodeterioro representa una amenaza para su conservación por lo que resulta crucial evaluar tratamientos que mitiguen los daños asociados.
Maria Alejandra Gonzalez Torres   +1 more
doaj   +1 more source

Lessons from a Rubik's Cube to solve the biodiversity crisis

open access: yesConservation Biology, Volume 39, Issue 3, June 2025.
Abstract Global biodiversity is facing unprecedented pressures, calling into question the effectiveness of existing governance systems aimed at halting extinctions. Renewed hope arose with the recent Conference of the Parties (COP) to the Convention on Biological Diversity (COP15 December 2022) and the Convention on International Trade in Endangered ...
Ana M. M. Sequeira, Erika J. E. Techera
wiley   +1 more source

Worldwide Soundscapes: A Synthesis of Passive Acoustic Monitoring Across Realms

open access: yesGlobal Ecology and Biogeography, Volume 34, Issue 5, May 2025.
ABSTRACT Aim The urgency for remote, reliable and scalable biodiversity monitoring amidst mounting human pressures on ecosystems has sparked worldwide interest in Passive Acoustic Monitoring (PAM), which can track life underwater and on land. However, we lack a unified methodology to report this sampling effort and a comprehensive overview of PAM ...
Kevin F. A. Darras   +580 more
wiley   +1 more source

Recolección y preservación de macroalgas marinas: una guía para estudios ficológicos

open access: yesIntropica, 2010
Conocer la forma adecuada de recolectar, preservar y conservar las macroalgas marinas es indispensable para generar colecciones biológicas que puedan ser utilizadas en diversas investigaciones (taxonomía, sistemática, ecología, evolución, etc.) y de ...
Lennin Florez-Leiva   +4 more
doaj  

Morphometric Characterization and Biochemical Comparison of Eight Diatom Strains Isolated From Coastal Areas of Baja California Sur, México

open access: yesAquaculture Research, Volume 2025, Issue 1, 2025.
Diatoms are a group of unicellular microalgae with a very attractive biochemical composition for biotechnology and aquaculture. This study aimed to characterize the morphometry and compare the biochemistry of eight diatom strains—Amphora sp., Entomoneis sp., Nanofrustulum shiloi, Navicula salinicola, Navicula sp., Nitzschia inconspicua, Psammodictyon ...
María Concepción Lora-Vilchis   +2 more
wiley   +1 more source

Recursos taxonómicos de especímenes tipo de la división de Micología “Instituto Spegazzini” (Museo de La Plata): Una revisión crítica para la investigación micológica

open access: yesBoletín de la Sociedad Argentina de Botánica
Introducción y objetivos: Las colecciones biológicas son fundamentales para preservar la biodiversidad y son base del conocimiento científico y patrimonio natural.
Fabricio Emanuel Valdés   +2 more
doaj   +1 more source

Alike but genetically divergent: The resurrection of Urotrygon asterias (Jordan & Gilbert, 1883) from its closest relatives, the Munda and the Blotched stingray

open access: yesJournal of Fish Biology, Volume 105, Issue 4, Page 1044-1059, October 2024.
Abstract The genus Urotrygon comprises small‐ to medium‐sized endemic round rays on the American continent and has undergone several synonymization processes. Here, we used an integrative taxonomic approach, including meristic, morphometric, and mtDNA analyses, to resolve the particularly intricate relationship among Urotrygon munda Gill, 1863 ...
Nicolás Roberto Ehemann   +4 more
wiley   +1 more source

Demographic and conservation genomic assessment of the threatened marbled teal (Marmaronetta angustirostris)

open access: yesEvolutionary Applications, Volume 17, Issue 5, May 2024.
Abstract Genetic assessment of species that have experienced dramatic population declines provides critical information that is instrumental for the design of conservation recovery programs. Here, we use different sources of molecular data (mtDNA and ddRAD‐seq) to evaluate the genetic status of wild and captive populations of marbled teal (Marmaronetta
Joaquín Ortego   +7 more
wiley   +1 more source

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