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Found 9 results.

Oecotoxikologische Wirkungen von Chemikalien (Risk Assessment, Umweltchemie, Ecoepidemiology)

Die SNG/Saguf ist in der Secotex vertreten, die jaehrlich zwei bis drei internationale wissenschaftliche Tagungen organisiert. Schwerpunkte der Taetigkeit betreffen die Quantifizierung von Umweltqualitaetsaspekten, die Erkennung von Relevanten Umweltbelastungen, die Erforschung der Kreislaeufe und der Wirkungen auf Pflanzen, Tiere (und Menschen), sowohl auf Individuen, wie auf Arten und Lebensgemeinschaften (inkl. Wechselwirkungen in allen Phasen). Mit Modellen wird versucht, Zusammenhaenge zu erfassen. Publikationsorgan ist Ecotoxikology and Environmental Safety (Acad.Press). 1984 fanden zwei Symposien statt: 24./25. Mai 1984 in Interlaken: Technical Organic Additives and the Environment 12./14. Sept. 1984 in Schmallenberg: Bioavailability of Environmental Chemicals.

Permanente Erhebung ueber Bildungsforschung (incl. Bibliographien und Literatursuchdienst)

Die Konferenz der kantonalen Erziehungsdirektoren unterhalten die Koordinationsstelle, welche Informationsaustausch und Zusammenarbeit zwischen Bildungsforschung, -praxis und -verwaltung foerdert und einen Online-Literatursuchdienst auf dem Gebiet der Bildungs- und Sozialwissenschaften betreibt (vgl. Orientierung im EVA-Bulletin, 1983). Drei Erhebungsprojekte haben einen Umweltbezug: - Die Entwicklung des Verstaendnisses fuer oekologische Regelkreise bei Jugendlichen (seit 1975). - Entwicklung und Einfuehrung eines Lehrplans fuer Naturlehre auf der Orientierungsstufe (seit 1980). - Schulversuch zur Individualisierung im Realienunterricht auf der Mittelstufe (seit 1981).

Measurements of net soil-atmosphere carbon dioxide exchange and its oxygen and carbon isotope composition in incubations of soil sampled from 44 sites in western Eurasia and northeastern Australia

Soils were sampled from 27 sites in western Eurasia during 2016 and 17 sites in northeastern Australia during 2017. Triplicate replicate microcosm incubations were created from homogenised soil from each site. The net soil-atmosphere exchange of carbon dioxide and its oxygen and carbon isotope composition between the soil and atmospheric was measured under two different headspace conditions using a custom built gas-exchange system. Subsequently the pH, microbial biomass and the availability of ammonium and nitrate were determined for incubated soils. An additional fertlisation experiment, consisting of a 0.7 mg addition of ammonium nitrate per gram of dry soil, was conducted on soils from 14 sites. The data from these incubations are reported along with the characteristics of the original sampling sites.

MOSES Eddy Covariance Data Kleinhau 2020

This meta data entry describes the measurement data from the mobile EC tower of the IBG-3 (FZJ) that was set up in Kleinhau during the 2020 MOSES campaign.

Flux vertical des nutriments (trappes fixes) dans l'eau du lac Leman (FRA)

Des chaines de trappes a sediments seront immergees a trois niveaux dans le Leman. L'analyse de leur contenu permettra d'estimer le flux vertical de la sedimentation des nutriments entre 60 et 300 m de profondeur. Cette estimation est indispensable a la modelisation du cycle du phosphore. Prevue sur deux ans a raison de 15 campagnes annuelles, cette etude est susceptible d'etre ecourtee en fonction des resultats obtenus lors de la premiere annee. (FRA)

ECOMONT: Ecological Effects of Land Use Changes on European Terrestrial Mountain Ecosystems - Research on Ecosystemic Processes in the Alpine Area, the Spanish Pyrenees and the Scottish Highlands

ECOMONT aims at investigating land-use changes in European Terrestrial Mountain Ecosystems in the context of the EU Framework IV (Environment and Climate: Theme 1, Area 1.2.2.1. The functioning of ecosystems). As a contribution to the Terrestrial Ecosystem Research Initiative TERI, ECOMONT aims at a high degree of integration: 1. to investigate which changes in the canopy structure occur due to land-use changes in agricultural and forestal Alpine ecosystems along a South/North research-transect across the Eastern Alps and how these changes affect the exchange processes with the atmosphere; 2. to clear up how the changes in canopy structure are connected with species composition and performance, as well as with species competition and interaction; 3. to understand the influence of land-use changes on soil organic matter (SOM) status and turnover, on biogeochemical (CO2, N) and hydrological processes at the ecosystem level, and on the exchange processes between the ecosystems and the lower layers of the atmosphere; 4. to extend this understanding to the landscape level by means of multimedia modelling activities; 5. to compare the results from the Alps with those of other European mountains (Spanish Pyrenees, Scottish Highlands). Six composite experimental sites are planned in the subalpine belt along European transects: Three sites will be situated along a South/North-transect from the Italian to the Austrian Alps. The other three sites will be located in the Swiss Alps, the Spanish Pyrenees and the Scottish Highlands. In each site comparative and complementary multidisciplinary integrated ecosystem studies will be conducted on differently managed ecosystems (meadows, pastures, abandones areas, forests). The following research topics will be included: Spatial distribution of vegetation and soil; physical and chemical soil properties; SOM status and turnover; canopy structure, evergy budget, water relations and gas exchange of single plants, ecosystems and catchments; exchange processes between the investigated landscapes and the atmosphere. Population and plant biological studies and potential risk analyses will also be conducted. All the results will be treated with the help of Environmental Information System, including numerical data-bases, GIS and remote sensing. ECOMOMT will be coordinated by the Institute of Botany, University of Innsbruck. Six partner teams from the Community Member States Austria, Italy, Germany, Great Britain, and Spain and two from the non-Member State Switzerland will contribute.

Etude de la deposition du mercure et de composes mineraux du mercure (FRA)

Mise au point d'une methodologie permettant le dosage du mercure a l'etat de sub-trace, dosage dans l'eau de pluie. Etude de la deposition de hg et de composes mineraux du mercure au moyen du modele de la cellule agitee. Determination de la vitesse de deposition dans le but de mieux decrire le cycle du mercure. (FRA)

Flux vertical des polychlorobiphenyles (PCB) dans le lac Leman (FRA)

La plupart des etudes sur les polychlorobiphenyles nous renseignent sur les quantites de produits stockes : teneurs dans les sediments, teneurs dans les poissons... La mise a profit de l'appareillage destine a l'etude de la sedimentation permettra d'apprecier les flux actuels de polychlorobiphenyles. Le programme sera suivi sur une seule annee au cours du plan. (FRA)

Signature sedimentologique: palynologique en geochimie et isotopiques des paleoclimats dans les sediments lacustres (FRA)

Les buts du projet sont 1. la reconstruction de paleoclimat et du paleoenvironnement du 'Oldest Dryas' a l'actuel au Gerzensee a partir des etudes geochimiques, mineralogiques, palynologiques, isotopiques (O18 et C13) et des gasteropodes des sediments lacustres. 2. Comparaison avec les variations saisonnieres actuelles (flux carbonate, flux organique, flux du residu insoluble a l'HCI, flux eolien), environnement, gasteropodes. 3. Etude des mecanismes de sedimentation lies aux caracteristiques du Gerzensee (hydrologie, isotopes de l'eau, geochimie de l'eau). 4. Comparaison avec le lac de Neuchatel. (FRA)

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