Results 21 to 30 of about 38,090 (178)
Instituciones, música, niños y jóvenes en orquestas sinfónicas y bandas musicales.
Runa, 2020 En éste trabajo exploramos como niños y jóvenes a través de su participación en bandas y orquestas musicales son reproductores de valores, instituciones e ideales tan grandes como la nación, la música mexicana, las casas de cultura, la familia. Ellos con
Martha Areli Ramirez Sanchez
doaj +1 more source
A review of IATTC research on the early life history and reproductive biology of scombrids conducted at the Achotines Laboratory from 1985 to 2005 [PDF]
, 2007 English: For nearly a century, fisheries scientists have studied marine fish stocks in an effort to understand how the abundances of fish populations are determined.
Hunt, Sharon L. +5 more
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Efecto de la exposicion a ruido por uso de reproductores de musica sobre la audicion en estudiantes universitarios [PDF]
, 2009 45 p.El presente estudio tiene como objetivos determinar el efecto de la exposición a ruido producto de la utilización de reproductores de música a través de audiometrías de altas frecuencias, estableciendo el riesgo relativo ante el posible padecimiento
Peña Rojas, Eduardo (Prof. Guía) +1 more
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Conservation Biology, Volume 40, Issue 1, February 2026.Abstract Spatial segregation in at‐sea distribution is frequently observed in seabirds and can have important implications for conservation and management. Globally, many albatross and petrel populations are declining due to bycatch in fisheries. In South Georgia, the decrease in wandering albatrosses (Diomedea exulans) differs among breeding sites ...
V. Warwick‐Evans +3 more
wiley +1 more source
Effects of nitrogen deposition on territory numbers of breeding birds
Conservation Biology, Volume 39, Issue 6, December 2025.Abstract Deposition of atmospheric N (nitrogen) is assumed to be a major cause of biodiversity decline in Europe. To date, few studies on the direct or indirect effects of N on bird species have been conducted. Using Swiss bird count data and habitat data, we analyzed the correlation of N deposition with numbers of territories of 112 breeding bird ...
Kim Meichtry‐Stier +3 more
wiley +1 more source
Revista de Producción Animal, 2022 Antecedentes: La reproducción artificial en Clarias gariepinus implica sacrificar el macho; se precisa conocer las características físicas del semen y sus variaciones, para su conservación en época pre-reproductiva y su aprovechamiento en la campaña de ...
Anaysi Portales González +3 more
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Almost Seven Decades of Coastal Bird Community Recovery Across Three European Seas
Global Change Biology, Volume 31, Issue 11, November 2025.Our study examined long‐term trends in coastal bird communities across three European seas from 1957 to 2024. We found that bird abundance and diversity have increased over time, although these improvements vary among regions and sites. Protected areas—particularly strictly protected ones—play an important role in supporting these recoveries, but ...
Carlos Cano‐Barbacil +10 more
wiley +1 more source
Biología Acuática, 2019 The aim of this work was the obtainment of Odontesthes bonariensis eggs from broodstocks reared in captivity since them hatched. The experiment took place from September 2005 to April 2006 during this time fish were kept in two circular tanks of 20 m2 ...
Gustavo E. Berasain +3 more
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Ecosistemas y Recursos Agropecuarios, 2014 En el presente trabajo se describe un género y especie nuevos de policlácidos de la Familia Leptoplanidae; se caracteriza por presentar los aparatos reproductores en el extremo posterior del cuerpo, por la posesión de dos vesículas de Lang y por su ...
Raul Pineda López +1 more
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Report of the Inter-American Tropical Tuna Commission for the year 2008 [PDF]
, 2010 ENGLISH: The Inter-American Tropical Tuna Commission (IATTC) operates under the authority and direction of a convention originally entered into by Costa Rica and the United States. The convention, which came into force in 1950, is open to adherence by
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