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Wohlfahrts- und Beschaeftigungseffekte oekologischer Steuerreformen

Ziel des Projektes ist es, Bedingungen herauszuarbeiten, unter denen oekologische Steuerreformen wohlfahrtssteigernde bzw. beschaeftigungssteigernde Wirkungen haben. Dabei steht im Mittelpunkt die Frage, ob es eine doppelte Dividende oekologischer Steuerreformen gibt.

Interaktion Donaustrom - Neue Donau, vor und nach Aufstau in Wien-Freudenau

Im Falle der Errichtung der Staustufe Wien-Freudenau koennte eine wassermengenwirtschaftlich vermehrte Zustroemung an Donauwasser zur Neuen Donau zu einer vermehrten Eutrophierung in dieser fuehren. Vom Ist-Zustand und in Zusammenarbeit mit Hygienikern und Limnologen/Hydrologen wurde und wird weiter versucht, auf die in diesem Zusammenhang massgebenden bestimmenden Faktoren einzugehen.

Size-frequency data of Macoma balthica from Rönnebank, Baltic Sea, in June 2023

In the framework of research on impacts of trawling in the western Baltic Sea (DAM pilot mission MGF Baltic Sea), we investigated the population structure of the benthic key species Macoma balthica by measuring shell length to provide the size-frequency distribution in the marine protected area of Rönnebank in the Southern Baltic Sea from June 2023. We obtained samples using vanVeen grabs inside the marine protected areas and reference areas nearby.

Seawater carbonate chemistry and benthic foraminifera Ammonia sp. mass, size, and growth rate during experiments, 2013

About 30% of the anthropogenically released CO2 is taken up by the oceans; such uptake causes surface ocean pH to decrease and is commonly referred to as ocean acidification (OA). Foraminifera are one of the most abundant groups of marine calcifiers, estimated to precipitate ca. 50 % of biogenic calcium carbonate in the open oceans. We have compiled the state of the art literature on OA effects on foraminifera, because the majority of OA research on this group was published within the last three years. Disparate responses of this important group of marine calcifiers to OA were reported, highlighting the importance of a process-based understanding of OA effects on foraminifera. We cultured the benthic foraminifer Ammonia sp. under a range of carbonate chemistry manipulation treatments to identify the parameter of the carbonate system causing the observed effects. This parameter identification is the first step towards a process-based understanding. We argue that CO3 is the parameter affecting foraminiferal size-normalized weights (SNWs) and growth rates. Based on the presented data, we can confirm the strong potential of Ammonia sp. foraminiferal SNW as a CO3 proxy.

Chlorophyll depth profiles from 2020-2024, Western Baltic, Germany

In the framework of research on impacts of trawling in the western Baltic Sea (DAM pilot mission MGF Baltic Sea), we measured the depth distribution of chlorophyll-a in order to study bioturbation in three marine protected areas of the Western and Southern Baltic Sea from 2020 – 2024. The marine protected areas are Fehmarnbelt, Oderbank and Rönnebank. We obtained samples using multiple corer inside the marine protected areas and reference areas nearby. During an in situ otter trawling experiment near Heiligendamm, core scuba divers additionally took targeted core samples from trawl track furrows, mounds, the ground net impacted area and control sites.

Size-frequency data of Mya arenaria from Oderbank, Baltic Sea, in June 2021

In the framework of research on impacts of trawling in the western Baltic Sea (DAM pilot mission MGF Baltic Sea), we investigated the population structure of the benthic key species Mya arenaria by measuring shell length to provide the size-frequency distribution in the marine protected area of Oderbank in the Southern Baltic Sea from June 2021. We obtained samples using vanVeen grabs inside the marine protected areas and reference areas nearby.

Size-frequency data of Macoma balthica from Oderbank, Baltic Sea, in June 2021

In the framework of research on impacts of trawling in the western Baltic Sea (DAM pilot mission MGF Baltic Sea), we investigated the population structure of the benthic key species Macoma balthica by measuring shell length to provide the size-frequency distribution in the marine protected area of Oderbank in the Southern Baltic Sea from June 2021. We obtained samples using vanVeen grabs inside the marine protected areas and reference areas nearby.

Size-frequency data of Arctica islandia from Fehmarnbelt, Baltic Sea, in June 2020

In the framework of research on impacts of trawling in the western Baltic Sea (DAM pilot mission MGF Baltic Sea), we investigated the population structure of the benthic key species Arctica islandica by measuring shell length to provide the size-frequency distribution in the marine protected area of Fehmarnbelt in the Western Baltic Sea from June 2020. We obtained samples using vanVeen grabs inside the marine protected areas and reference areas nearby.

Multibeam bathymetry processed data (dataset compilation) of RV POLARSTERN & RV MARIA S. MERIAN during 44 cruises from 1984 to 2024, Fram Strait, Greenland Sea, Arctic Ocean

The Long-Term Ecological Research observatory HAUSGARTEN was established by the Alfred-Wegener-Institut Helmholtz-Zentrum für Polar- und Meeresforschung in the Fram Strait in summer 1999 to detect and track the impact of large-scale environmental changes on the marine ecosystem in the transition zone between the northern North Atlantic and the central Arctic Ocean. In this area, bathymetric data have been recorded with multibeam echosounders during 44 research expeditions on RV Polarstern and RV Maria S. Merian since 1984. From these data, a digital elevation model was generated and geostatistical analyses were performed to calculate geospatial derivatives and quantitative terrain descriptors for subsequent terrain analyses and habitat mapping. The dataset covers an area from 78°N to 81°N and 6°W to 12°E. To create the data product, archive data was used from seven different multibeam echosounders in various raw data formats. This data has been processed and cleaned with CARIS HIPS & SIPS, including sound velocity correction for datasets from 1999 and newer. Older datasets are calculated with a static sound velocity of 1500 m/s. Soundings where exported for gridding with Generic Mapping Tools (GMT) nearneighbor. The resulting Digital Elevation Model (DEM) is in the WGS84/Arctic Polar Stereographic (EPSG:3995) projection with a cell size of 100m x 100m. The hillshade was computed with a combination of slope and synthetic illumination with a vertical exaggeration of 10. Slope inclination was calculated with GDAL tool Slope with the formula of Zevenbergen and Thorne (1987) in degree. Terrain Ruggedness Index (TRI) was computed with the QGIS tool Ruggedness index following the approach of Riley et al. (1999) in meters. For the Bathymetric Position Indices (BPI), focal statistics have been calculated with the GRASS tool "r.neighbors" and the QGIS raster calculator following the concept of the Topographic Position Index (Weiss, 2001) with a circular reference area of 99 cells (broad) and 9 cells (fine). The additional coverage polygon layer gives and overview on the used datasets and their corresponding metadata. The map gives an overview on the LTER HAUSGARTEN area and the HAUSGARTEN 2024 DEM.

Erfassung und Stärkung von Wirkungen Sozialer Innovationen - Begleitforschung zum Programm 'Transformationscluster Soziale Innovationen für Nachhaltige Städte'

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