Pollen record and age determinations on four sites from Taymyr Peninsula, Russia

Pollen data from a Levinson-Lessing Lake sediment core (74°28'N, 98°38'E) and Cape Sabler, Taymyr Lake permafrost sequences (74°33'N, 100°32'E) reveal substantial environmental changes on the northern Taymyr Peninsula during the last c. 32 000 14C years. The continuous records confirm that a scarce steppe-like vegetation with Poaceae, Artemisia and Cyperaceae dominated c. 32 000-10 300 14C yr BP, while tundra-like vegetation with Oxyria, Ranunculaceae and Caryophyllaceae grew in wetter areas. The coldest interval occurred c. 18 000 yr BP. Lateglacial pollen data show several warming events followed by a climate deterioration c. 10 500 14C yr BP, which may correspond with the Younger Dryas. The Late Pleistocene/Holocene transition, c. 10 300-10 000 14C yr BP, is characterized by a change from the herb-dominated vegetation to shrubby tundra with Betula sect. Nanae and Salix. Alnus fruticosa arrived locally c. 9000-8500 14C yr BP and disappeared c. 4000-3500 14C yr BP. Communities of Betula sect. Nanae, broadly distributed at c. 10 000-3500 14C yr BP, almost disappeared when vegetation became similar to the modern herb tundra after 3500-3000 14C yr BP. Quantitative climate reconstructions show Last Glacial Maximum summer temperature about 4°C below the present and Preboreal (c. 10 000 14C yr BP) temperature 2-4°C above the present. Maximum summer temperature occurred between 10 000 and 5500 14C yr BP; later summers were similar to present or slightly warmer.

Deep drilling of glaciers: Russian projects in the Arctic (1975-1995)

The data collection "Deep Drilling of Glaciers: Soviet-Russian projects in Arctic, 1975-1995" was collected by the following basic considerations: - compilation of deep (>100 m) drilling projects on Arctic glaciers, using data of (a) publications; (b) archives of IGRAN; (c) personal communication of project participants; - documentation of parameters, references. Accuracy of data and techniques applied to determine different parameters are not evaluated. The accuracy of some geochemical parameters (up to 1984 and heavy metalls) is uncertain. Most reconstructions of ice core age and of annual layer thickness are discussed; - digitizing of published diagrams (in case, when original numerical data were lost) and subsequent data conversion to equal range series and adjustment to the common units. Therefore, the equal-range series were calculated from original data or converted from digitized chart values as indicated in the metadata. For the methodological purpose, the equal-range series obtained from original and reconstructed data were compared repeatedly; the systematic difference was less then 5-7%. Special attention should be given to the fact, that the data for individual ice core parameters varies, because some parameters were originally measured or registered. Parameters were converted in equal-range series using 2 m steps; - two or more parameter values were determined, then the mean-weighted (i.e. accounting the sample length) value is assigned to the entire interval; - one parameter value was determined, measured or registered independently from the parameter values in depth intervals which over- and underlie it, then the value is assigned to the entire interval; - one parameter value was determined, measured or registered for two adjoining depth intervals, then the specific value is assigned to the depth interval, which represents >75% of sample length ; if each of adjoining depth intervals represents <75% of sample length, then the correspondent parameter value is assigned to both intervals of depth. This collection of ice core data (version 2000) was made available through the EU funded QUEEN project by S.M. Arkhipov, Moscow.

Signos y profecías en el libro III de Eneida

El objetivo de este trabajo es estudiar los signos y profecías de Eneida III, entendidos como medio de comunicación del fatum entre dioses y hombres y, en consecuencia, inscriptos en el arte de la divinatio. Se analizan los anuncios de Apolo, los Penates, Celeno, Heleno y el signo de los caballos blancos en relación con la tipología de prácticas adivinatorias que presentan tanto un texto antiguo (De divinatione de Cicerón), como estudios contemporáneos (Bouché-Leclercq, Flacelière, Turcan, Warrior, etc). A través de este examen se advierte a) una síntesis de elementos pertenecientes a diferentes rituales que no se agotan en la adivinación oficial romana, b) el modo en que se organiza la jerarquía divina del poema, en términos de conocimiento del destino y c) una representación de los troyanos como pueblo piadoso que honra a los dioses a través de distintas ofrendas y sacrificios

Signos y profecías en el libro III de Eneida

El objetivo de este trabajo es estudiar los signos y profecías de Eneida III, entendidos como medio de comunicación del fatum entre dioses y hombres y, en consecuencia, inscriptos en el arte de la divinatio. Se analizan los anuncios de Apolo, los Penates, Celeno, Heleno y el signo de los caballos blancos en relación con la tipología de prácticas adivinatorias que presentan tanto un texto antiguo (De divinatione de Cicerón), como estudios contemporáneos (Bouché-Leclercq, Flacelière, Turcan, Warrior, etc). A través de este examen se advierte a) una síntesis de elementos pertenecientes a diferentes rituales que no se agotan en la adivinación oficial romana, b) el modo en que se organiza la jerarquía divina del poema, en términos de conocimiento del destino y c) una representación de los troyanos como pueblo piadoso que honra a los dioses a través de distintas ofrendas y sacrificios

Predicting changes in abundance and juvenile proportions of earthworms in the field using glmmADMB in R

The study aimed at investigating effects of three differently acting biocides; the insecticide esfenvalerate, the fungicide picoxystrobin and the bactericide triclosan, applied individually and as a mixture, on an earthworm community in the field. A concentration-response design was chosen and results were analyzed using univariate and multivariate approaches. Effects on juvenile proportions were less pronounced and more variable than effects on abundance, but effects in general were species- and chemical-specific, and temporal variations distinct. Esfenvalerate and picoxystrobin appeared to elicit stronger effects than triclosan at laboratory-based ECx values, which is in accordance with our previous laboratory study on Eisenia fetida. The mixture affected abundance and juvenile proportions, but the latter only at high mixture concentrations. Esfenvalerate and picoxystrobin appeared to be the main drivers for the mixture's toxicity. Species-specific toxicity patterns question the reliability of mixture toxicity predictions derived on E. fetida for field earthworms. Biocide concentrations equaling EC50s (reproduction) for E. fetida provoked effects on the field earthworms mainly exceeding 50%, indicating effect intensification from the laboratory to field as well as the influence of indirect effects produced by species interactions. The differing results of the present field study and the previous laboratory study imply that lower- and higher-tier studies may not be mutually exclusive, but to be used in complementary.

Signos y profecías en el libro III de Eneida

El objetivo de este trabajo es estudiar los signos y profecías de Eneida III, entendidos como medio de comunicación del fatum entre dioses y hombres y, en consecuencia, inscriptos en el arte de la divinatio. Se analizan los anuncios de Apolo, los Penates, Celeno, Heleno y el signo de los caballos blancos en relación con la tipología de prácticas adivinatorias que presentan tanto un texto antiguo (De divinatione de Cicerón), como estudios contemporáneos (Bouché-Leclercq, Flacelière, Turcan, Warrior, etc). A través de este examen se advierte a) una síntesis de elementos pertenecientes a diferentes rituales que no se agotan en la adivinación oficial romana, b) el modo en que se organiza la jerarquía divina del poema, en términos de conocimiento del destino y c) una representación de los troyanos como pueblo piadoso que honra a los dioses a través de distintas ofrendas y sacrificios

Escrituras del otro en autores de la literatura francesa

Tabla de contenidos: Exotismo y ficción / Walter Romero. Henri Michaux : El otro en la mirada del artista / Estela Blarduni. Oriente en la obra de Marguerite Yourcenar / Claudia Moronell. Nosotros somos Marsella : Espacio e identidad en Jean-Claude Izzo / Maya González Roux. Voces extraterritoriales en la literatura francesa contemporánea : Andrei Makine y Héctor Bianciotti / Ana María Rossi.