The role of ciliates in the pelagic life cycle of the Mediterranean [Translation from: Rapports et Proces Verbaux des Reunions-Conseil International pour l'Exploration de la Mer 17, 511-512, 1963]

During hydrographic and plankton studies carried out since 1960 in the coastal zone between the Ebro and Castellon (western Mediterranean), data has been collected which confirms the importance of ciliates in the composition and activity of the plankton. The ciliates in 413 samples of 100 ml of water were counted, having been examined with the Utermohl microscope after sedimentation. The samples studied were distributed according to the density of their population. subject for study. The author concludes that recognition of the role of ciliates as an important link in the food chain of the sea would simplify the interpretation of certain problems posed by the nutrition of certain groups of planktonic animals.

The Freshwater Biological Association and the International Biological Programme (1961-1976)

The involvement of the FBA in the primary productivity program is reviewed.

Global and local challenges for best practices in assessment. The 9th Conference on the International Test Commission. Book of abstracts

The 9th International Test Commission Conference (ITC) took place at the Miramar Palace in San Sebastian, Spain, between the 2nd and 5th of July, 2014. The Conference was titled, “Global and Local Challenges for Best Practices in Assessment.” The International Test Commission, ITC (www.intestcom.org), is an association of national psychological associations, test commissions, publishers, and other organizations, as well as individuals who are committed to the promotion of effective testing and assessment policies and to the proper development, evaluation, and uses of educational and psychological instruments. The ITC facilitates the exchange of information among members and stimulates their cooperation on problems related to the construction, distribution, and uses of psychological and educational tests and other psychodiagnostic tools. This volume contains the abstracts of the contributions presented at the 9th International Test Commission Conference. The four themes of the Conference were closely linked to the goals of the ITC: - Challenges and Opportunities in International Assessment. - Application of New Technoloogies and New Psychometric Models in Testing. - Standards and Guidelines for Best Testing Practices. - Testing in Multilingual and Multicultural Contexts.

IKASNABAR 2014 International Conference. Microcontents, miniMOOCs and mLearning

[ES]Ikasnabar es una conferencia para hablar de tendencias en educación, sobre las nuevas tecnologías en el ámbito educativo y conocer personas que están generando buenas ideas y prácticas en su quehacer diario. Este libro intenta recoger todo ello con las contribuciones de autores noveles y de renombre que buscan la excelencia en los procesos de enseñanza-aprendizaje. Tres tendencias importantes de aprendizaje se están expandiendo. Microcontenidos, aprendizaje móvil y MOOCs son la cara de una misma moneda: microaprendizaje con contenido rico, abierto y desmenuzado. A medida que el consumo de Internet desde dispositivos móviles aumenta, el aprendizaje móvil con tecnologías como HTML5, software para MOOC, plataformas de contenidos de vídeo, etc., están siendo algunas de las claves de la nueva revolución en el ámbito educativo. El microcontenido hace referencia a los pequeños trozos de información digital en un estado permanente de flujo y circulación. Es a menudo un único tema, limitado en longitud, que se consume rápidamente y con frecuencia limitado por el software o por el dispositivo. Se trata de la puesta en común de recursos. Se basa en la interacción humano-a-humano con los medios de comunicación de Internet. El otro tema central de esta conferencia es el de los MOOC realizados por los profesores que quieren tomar ventaja en el comienzo de esta nueva era de la educación abierta con calidad. MOOCs son, básicamente, cursos abiertos y es necesario recordar los puntos esenciales de este tipo de instrucción. Los miniMOOCs son alternativas con menos horas en el proceso de aprendizaje. Hoy en día, un buen MOOC podrá ser la mejor tarjeta de presentación para profesores, expertos y estudiantes. Vivimos en tiempos de cambio con ámbitos en los que se mezcla el aprendizaje formal e informal, y las universidades y colegios deberíamos estar atentos a esto.

Reconciling yield stability with international fisheries agencies precautionary preferences: the role of non constant discount factors in age structured models

International fisheries agencies recommend exploitation paths that satisfy two features. First, for precautionary reasons exploitation paths should avoid high fishing mortality in those fisheries where the biomass is depleted to a degree that jeopardise the stock's capacity to produce the Maximum Sustainable Yield (MSY). Second, for economic and social reasons, captures should be as stable (smooth) as possible over time. In this article we show that a conflict between these two interests may occur when seeking for optimal exploitation paths using age structured bioeconomic approach. Our results show that this conflict be overtaken by using non constant discount factors that value future stocks considering their relative intertemporal scarcity.

Proceedings of the international workshop on the ecology and fisheries for tunas associated with floating objects

It has long been known that tunas frequently associate with floating objects, such as trees washed out to sea during periods of heavy rainfall, and fishermen have taken advantage of this behavior to facilitate the capture of fish. In some coastal areas, such as the Philippines, artisanal fishermen construct anchored fish-aggregating devices (FADs) to attract fish. More recently, large numbers of free-floating FADs have been constructed for deployment by large purse seiners on the high seas. The FADs often can be interrogated by the seiner and located at great distances using radio telemetry and/or GPS (Global Positioning System) technologies. In some cases a fleet of fishing vessels has a tender vessel which deploys and maintains the FADs, and notifies the fishing vessels when fish are seen around them. This workshop was convened by the Inter-American Tropical Tuna Commission and sponsored by Bumble Bee Seafoods, Inc., for the purpose of bringing together scientists and fishermen who have studied the association of tunas with floating objects. Special efforts were made to get participants from all the areas in which tunas associated with floating objects are the targets of fisheries. Thus the "regional review papers" include contributions for the eastern Atlantic, the southern Caribbean Sea, the Indian Ocean, and the eastern and western Pacific Oceans. Many of these reviews and other contributed papers are published in this proceedings volume. Other papers discussed in the workshop were published elsewhere; these papers are cited in the list of background documents in the Report of the Workshop.