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  • Monitoring Cruise in the frame of the Combine programme of HELCOM

  • Monitoring Cruise in the frame of the Combine programme of HELCOM

  • Meteorological, hydrographic, marine chemical and biological investigations according to the Baltic Monitoring Programme of HELCOM and the IOW long-term observation project

  • Studies of the spatial and temporal variations of hydrographic, hydrochemical and hydrobiological parameters in the frame of the COMBINE Programme of HELCOM as well as measurements for the IOW's long term data set. It was the third cruise in a series of five expeditions performed annually. The data acquired are used for the regular national and international assessments of the state of the Baltic Sea, and provide the scientific basis for measures to be taken for the protection of the ecosystem Baltic Sea. The cruise was performed in appropriate weather conditions. All planned research activities were realised.

  • Studies of the spatial and temporal variations of hydrographic, hydrochemical and hydrobiological parameters in the frame of the COMBINE Programme of HELCOM as well as measurements for the IOW's long term data set

  • Meteorological, hydrographic, marine chemical and biological investigations according to the Baltic Monitoring Programme of HELCOM and the IOW long-term observation project

  • The Alkor cruise AL433a was carried out as a joined cruise of the environmental monitoring program of the Federal Maritime and Hydrographic Agency (BSH) and the Baltic Sea long term observation program of the Leibniz-Institute for Baltic Sea Research Warnemünde (IOW). It was the second cruise in a series of five expeditions performed annually. The data acquired are used for the regular national and international assessments of the state of the Baltic Sea, and provide the scientific basis for measures to be taken for the protection of the ecosystem Baltic Sea. The cruise was performed in appropriate weather conditions. All planned research activities were realised.

  • Upwelling areas in the eastern boundary currents respond sensitively to global, regional, and local changes in atmospheric circulation patterns. In the past several coastal upwelling systems have experienced dramatic changes (regime shifts) in ecosystem structure and fish catches, which are not fully understood yet. Using dedicated process studies and long term observations, the GENUS project aims to clarify the interactions between the particular trophic levels of the ecosystem in order to improve the knowledge about the system and to enhance the predictive capabilities of ecosystem models. The cruise M103 / NAMUFIL forms the main field experiment of the GENUS II project. During the seasonal upwelling minimum the status and developement of the northern Benguela ecosystem will be investigated by an interdisciplinary working group in close cooperation with African partners. Due to the amount and complexity of the study the cruise will be split into two legs. The first leg will focus on process studies regarding (1) the ecology and physiology of zoo- and ichthyoplankton, (2) the impact of small scale turbulent processes on transports, and (3) the exchange of matter between sediment and water column. Additionally, large scale distribution patterns of important ecosystem parameters will be obtained to provide the base line conditions for the process and filament studies. During the second leg of the cruise the biotic and abiotic dynamics of upwelling filaments will be studied. Special towed devices will be used, that provide the necessary high spatial resolution measurements. The emphasis will be on plankton succession in the filament and on matter fluxes between the filament and the adjacent oceanic ecosystem. The cruise will be complementary to the first GENUS II cruise "NamBound" 2013 (M100) that is performed during the seasonal upwelling maximum.

  • Objectives The cruise is embedded in the German South African cooperation within the framework of the SPACES program and provides a very important extension and contribution to the works planned in the RAIN (Regional Archives for Integrated Investigations) and WCLL (Wild Coast Living Laboratory) projects as well as a valuable additional data set in the GENUS-II project. The information retrieved from this cruise will improve our knowledge on origin and dynamics of the Agulhas current and its interplay with estuarine systems along South Africa’s east coast, and the dynamics of ESACW and SACW and its impact on the OMZ in the northern Benguela upwelling system. A strong focus was put on training and capacity building activities in physical, biological, biogeochemical and geological marine research. A total of 15 berths was provided for post-graduate or PhD students and young scientists to learn state of the art methods in marine science. The joint work at sea of ca. ten South African and five German trainees will foster intercultural exchange and provide a common basis for potential future cooperation. Narrative The cruise M102 with RV Meteor was designed as a research and training cruise within the German – South African cooperation in marine science SPACES (Science for the Assessment of Complex Earth System Processes). Scientific participants boarded the RV METEOR in the morning of December 5th and immediately started to prepare the laboratories using the calm conditions in the port. After leaving the port on December 6th, the ship reached the first stations on the 7th early in the morning and deployed three ARGO floats between La Reunion and Madagascar. Argo floats and SVP drifters were deployed in one of the cyclonic eddies near Madagascar. Another set of two ARGO floats and five surface drifters was released on the 10th half way between Madagascar and South Africa at 27°S, 39°E. All floats and drifters are working and collecting hydrographical data since then. Other aims of the hydrographical investigations were: • To determine the spatial and temporal characteristics of the hydrographic patterns south off Durban, and it’s influence on the circulation and productivity of the shelf waters of the Transkei (CTD) and water mass dynamics for better prediction of future scenarios. • To investigate the northward spreading of ESACW and the related oxygen supply in the southern and central Benguela. • To train regional and German young scientists in state-of-the-art marine science and practical work on board. The plankton work focused on the macro-zooplankton and ichthyoplankton in the Wildcoast area and along the Benguela Current and was performed by means of a vertical and a towed multinet as well as by a ringtrawl. Onboard analyses targeted jelly fish, general macro-zooplankton composition and fish eggs and larvae. Changes in the composition, as well as the overall abundance of gelatinous zooplankton along the two inshore-offshore transects were found. Besides two oceanographical stations with CTD and plankton nets, the work off Durban focused on Parasound imaging of the sediment and coring for lagoonal sediments to reconstruct shore evolution along the south/southeast coast of South Africa. Along the South African coast off Durban, Mossel Bay and Elands Bay eight cores were obtained by using a vibrocorer. Gravity coring was also attempted at these sites but unfortunately due to the sediment composition and seafloor characteristics this was unsuccessful. RV Meteor reached its last station on 22nd of December after midnight and then headed towards Walvis Bay for calling in the port the same day.

  • Baltic Sea monitoring programme of IOW/BSH for the routinely assessment of the Baltic Sea with physical, chemical biological methods at standard positions. Mooring maintenance in the Gotland Basin. Hydrographic and biological and microbiological measurements in the course of the long term data acquisition programme of the IOW. Investigation of the redoxcline dynamics in the Gotland Basin.