Wetland maps including open water extent dynamics based on ENVISAT ASAR WS for Siberia, 2007 and 2008, links to GeoTIFFs

Wetlands store large amounts of carbon, and depending on their status and type, they release specific amounts of methane gas to the atmosphere. The connection between wetland type and methane emission has been investigated in various studies and utilized in climate change monitoring and modelling. For improved estimation of methane emissions, land surface models require information such as the wetland fraction and its dynamics over large areas. Existing datasets of wetland dynamics present the total amount of wetland (fraction) for each model grid cell, but do not discriminate the different wetland types like permanent lakes, periodically inundated areas or peatlands. Wetland types differently influence methane fluxes and thus their contribution to the total wetland fraction should be quantified. Especially wetlands of permafrost regions are expected to have a strong impact on future climate due to soil thawing. In this study ENIVSAT ASAR Wide Swath data was tested for operational monitoring of the distribution of areas with a long-term SW near 1 (hSW) in northern Russia (SW = degree of saturation with water, 1 = saturated), which is a specific characteristic of peatlands. For the whole northern Russia, areas with hSW were delineated and discriminated from dynamic and open water bodies for the years 2007 and 2008. The area identified with this method amounts to approximately 300,000 km**2 in northern Siberia in 2007. It overlaps with zones of high carbon storage. Comparison with a range of related datasets (static and dynamic) showed that hSW represents not only peatlands but also temporary wetlands associated with post-forest fire conditions in permafrost regions. Annual long-term monitoring of change in boreal and tundra environments is possible with the presented approach. Sentinel-1, the successor of ENVISAT ASAR, will provide data that may allow continuous monitoring of these wetland dynamics in the future complementing global observations of wetland fraction.

Daniel Balderston, ¿Fuera de contexto? Referencialidad histórica y expresión de la realidad en Borges. Rosario, Beatriz Viterbo, 1990; 252 páginas. (1a ed. Duke University Press, 1993)

Fil: Goldchluk, Graciela Beatriz. Universidad Nacional de La Plata. Facultad de Humanidades y Ciencias de la Educación; Argentina.

Near-bottom zooplankton aggregations in Kongsfjorden with link to images from the optical zooplankton sensor MOKI

Near-bottom zooplankton communities have rarely been studied despite numerous reports of high zooplankton concentrations, probably due to methodological constraints. In Kongsfjorden, Svalbard, the near-bottom layer was studied for the first time by combining daytime deployments of a remotely operated vehicle (ROV), the optical zooplankton sensor moored on-sight key species investigation (MOKI), and Tucker trawl sampling. ROV data from the fjord entrance and the inner fjord showed high near-bottom abundances of euphausiids with a mean concentration of 17.3 ± 3.5 n/100 m**3. With the MOKI system, we observed varying numbers of euphausiids, amphipods, chaetognaths, and copepods on the seafloor at six stations. Light-induced zooplankton swarms reached densities in the order of 90,000 (euphausiids), 120,000 (amphipods), and 470,000 ind/m**3 (chaetognaths), whereas older copepodids of Calanus hyperboreus and C. glacialis did not respond to light. They were abundant at the seafloor and 5 m above and showed maximum abundance of 65,000 ind/m**3. Tucker trawl data provided an overview of the seasonal vertical distribution of euphausiids. The most abundant species Thysanoessa inermis reached near-bottom concentrations of 270 ind/m**3. Regional distribution was neither related to depth nor to location in the fjord. The taxa observed were all part of the pelagic community. Our observations suggest the presence of near-bottom macrozooplankton also in other regions and challenge the current view of bentho-pelagic coupling. Neglecting this community may cause severe underestimates of the stock of elagic zooplankton, especially predatory species, which link secondary production with higher trophic levels.

Case studies of the effects of a total solar eclipse on weather with varying degrees of cloud cover using a local numerical weather prediction model

The importance of renewable energies for the European electricity market is growing rapidly. This presents transmission grids and the power market in general with new challenges which stem from the higher spatiotemporal variability of power generation. This uncertainty is due to the fact that renewable power production results from weather phenomena, thus making it difficult to plan and control. We present a sensitivity study of a total solar eclipse in central Europe in March. The weather in Germany and Europe was modeled using the German Weather Service's local area models COSMO-DE and COSMO-EU, respectively (http://www.cosmo-model.org/). The simulations were performed with and without considering a solar eclipse for the following 3 situations: 1. An idealized, clear-sky situation for the entire model area (Europe, COSMO-EU) 2. A real weather situation with mostly cloudy skies (Germany, COSMO-DE) 3. A real weather situation with mostly clear skies (Germany, COSMO-DE) The data should help to evaluate the effects of a total solar eclipse on the weather in the planetary boundary layer. The results show that a total solar eclipse has significant effects particularly on the main variables for renewable energy production, such as solar irradiation and temperature near the ground.

Daniel Balderston, ¿Fuera de contexto? Referencialidad histórica y expresión de la realidad en Borges. Rosario, Beatriz Viterbo, 1990; 252 páginas. (1a ed. Duke University Press, 1993)

Fil: Goldchluk, Graciela Beatriz. Universidad Nacional de La Plata. Facultad de Humanidades y Ciencias de la Educación; Argentina.

O oponente escatológico de Daniel e o Anticristo do Apocalipse Siríaco de Daniel

The Syriac Apocalypse of Daniel (Syr Apoc Dan), a Christian apocalypse from the seventh century of Common Era, is clearly tributary to the canonical book of Daniel (Dn). In its turn, Dn provided the figure of an eschatological opponent who was re-signified in Christianity: the Antichrist. The cosmic dimensions of the malevolent character of oppressive tyrant of Dn - his arrogance against the gods, the abomination of desolation, military conquests and persecutions of the saints, the change of the cosmic order, the time of the reign and death of the tyrant - are considered in this work compared with the Antichrist of the Syr Apoc Dan

Prevención de lesiones en el deporte. Claves para un rendimiento deportivo óptimo. Romero Rodríguez, Daniel y Tous Fajardo, Julio. Medica Panamericana D. L., Madrid, 2010

La obra presenta variados temas, alguno de los cuales son abordados en forma general y en otros los autores profundizan introduciendo al lector en el verdadero campo de la prevención. Dentro de estos temas dedican un capítulo a uno de los pilares más importantes para la determinación de puntos débiles, que es la valoración de los aspectos necesarios de la forma física en relación a la posibilidad de lesiones, es decir, poder determinar el perfil lesivo de cada deportista. Se presentan metodologías de tratamiento en la prevención de lesiones basadas en tres pilares fundamentales: enfoque neuromuscular, entrenamiento de la fuerza para orientar los tratamientos y priorizar el componente excéntrico del movimiento como base funcional para la prevención. Así mismo incorpora una metodología de trabajo por medio de la vibración

Daniel Cravacuore, Sergio Ilari y Alejandro Villar, La articulación en la gestión municipal. Actores y políticas

Fil: Chain, Leyla Inés. Universidad Nacional de La Plata. Facultad de Humanidades y Ciencias de la Educación; Argentina.

Daniel Bensaïd (2009). Marx Intempestivo. Grandezas y miserias de una aventura crítica. Buenos Aires: Ediciones Herramienta. 539 páginas

Fil: Franchella, Agustín. Universidad Nacional de La Plata. Facultad de Humanidades y Ciencias de la Educación; Argentina.

Daniel Filmus y Carina V. Kaplan, Educar para una sociedad más justa. Debates y desafíos de la Ley de Educación Nacional. Debates y desafíos de la Ley de Educación Nacional. Buenos Aires, Aguilar, 2012

Fil: Severino, Moira. Universidad Nacional de La Plata. Facultad de Humanidades y Ciencias de la Educación; Argentina.

Nacionalismo y antisemitismo en la Argentina, de Daniel Lvovich, Buenos Aires, Javier Vergara Editor, 2003, 601 páginas

Fil: Bisso, Andrés. Universidad Nacional de La Plata. Facultad de Humanidades y Ciencias de la Educación; Argentina.