A physical-statistical model of hydrography for fishery and ecology studies (AHOI)
AHOI (Adjusted Hydrography Optimal Interpolation) is a simple physical-statistical model developed in the working group 'Operational Observation Systems' of the Thünen Institute of Sea Fisheries to produce monthly gridded in situ hydrography through various decades. Special care is given to a high vertical resolution, in order to yield a good representation of the near-seabed hydrography due to its importance for marine ecosystems. As a case study we produced monthly maps of
temperature and salinity in the North Sea from 1948 to 2013. This study has been published in Journal of Marine ...
The North Sea shrimps (Crangon crangon) caught on the North Sea coast are today mainly shelled by hand in Morocco. We are investigating the possibilities of using a new mechanical shrimp peeling technique for regional processing and marketing of the shrimp.
Analyses of fishery effort in German fishing fleets
The project aims at a better understanding of the relationship between fisheries and population dynamics of fish stocks in order to better predict and justify the necessity of fleet capacity adjustment measures
Assessment of pelagic fish stocks in the North Sea and North Atlantic
Data on population parameters of pelagic fish stocks (herring, mackerel, horse mackerel, blue whiting and sprat) in the North Sea and North Atlantic are combined with catch records and landings statistics and provide input for the fish stock assessments of ICES. The results of these calculations serve as a basis for sustainable fisheries management.
Automated fish age reading and analysis of growth patterns using deep learning
In recent years, the use of artificial intelligence has increased massively in various disciplines. Can this technology also be applied in fisheries science? This question is to be clarified in a PhD project.
- What has biomass use in Germany developed?
- How important are import commodities for German bioeconomy and what effects do they have in the countries of origin?
- We will address these and further questions in the project.
Factors such as temperature, salinity, oxygen, and oceanic currents shape the environmental conditions of marine life and directly or indirectly impact marine ecosystems. In this project, we aim to understand and quantify these impacts and use climatic trends to predict future changes in marine life.
Climate Change and Future Marine Ecosystem Services and Biodiversity (FutureMARES)
Climate change has negative impacts on marine ecosystems, biodiversity and ecosystem services. Which adaptation strategies to climate change using nature based solutions are possible, to reduce the negative impacts on marine ecosystems?
Coastal Ecosystem Monitoring in Cabo Verde - developing a blueprint for Large Ocean States (CEM_CV)
The management of marine natural resources in small island states - large ocean countries often poses certain challenges due to the extent of marine environment to be covered and the according logistics and infrastructure. Likewise, significant efforts are required to let policy makers and often remote communities fully participate in decision making processes. Data on the extent and dynamics of the natural resources as well as the notion of drivers of change are needed to understand ways to improve their state and utilization, to maintain and preserve vulnerable parts of the ecosystem and ...
CoastalFutures - Future Scenarious for Sustainable Marine Ecosystems of Contested Marine Areas
In "CoastalFutures", we elaborate science-based concepts for sustainable management of coasts, marine ecosystems and their resources. We develop an innovative model system to test future use scenarios and support analyses of possible management options.
This research activity will enhance multi-species models (improved diet selection models and recruitment models) to enable best possible projections of stocks developments. This will contribute to a sustainable harvest of fish stocks inside an ecosystem approach. Not only fisheries influence fish stocks but also predation and other environmental factors.
Establishment of a trilateral UFO network of mobile, portable and stationary units for an automatic, continuous, non-invasive monitoring of fish stocks in the Bay of Kiel (UFOTriNet)
In UFOTriNet, an intelligent underwater test network of innovative stationary and mobile UFO units is being developed with the aim of automatically and continuously monitoring the diversity and abundance of fish populations and their environment.
What are the perspectives for German coastal fisheries in long-terms? This central question arises, when facing the crisis of German fisheries in the Baltic Sea or considering the current developments of Marine Spatial Planning and other issues in the North Sea.
Tope is the biggest shark species resident in German waters and is classified as "critically endangered". Tagging experiments with satellite pop-up tags in the North Sea are expected to provide information on migration behaviour of this species and thus allow a more precise estimate of distribution and population size.
Helping to implement a WASCAL master research program "Climate change and Marine Sciences" at Mindelo / Cabo Verde (WASCAL TI-CCMS)
Climate change poses a significant challenge to African societies within the next decades. Direct effects such as droughts and water shortages will be amplified through increased economic and population growth. To combat climate change effects and maintain the livelihoods of the peoples is thus the major aim of WASCAL. Marine resources will play a significant role in the future supply of protein for human nutrition in West Africa.
How many herring larvae are hatching annually? The Thünen-Institute of Sea Fisheries estimate their number in annual research surveys. For example, we use this informationas an indicator of the spawning stock biomass of North Sea autumn spawning herring.
Knowledge on the strength of the recruiting year class of a fish stock is of tremendous importance for sustainable mangement. Successful reproduction and foraging of fry are of essential importance for the further development of the stock.
Hydroacoustics - Methods, Applications, Development
Hydroacoustic methods utilize sound waves to detect marine organisms. Modern echosounders can not only be used to determine stock parameters but also allow identification of habitat use, species composition and further parameters of marine ecosystems.
Impact of the use of offshore wind and other marine renewables on European fisheries
What is the general impact of the development of marine renewables on the European fishing sector? In our study we will answer this question, highlight pathways for possible co-existence solutions and research gaps and provide concluding policy recommendations.
Implementation of the Marine Strategy Framework directive (MSFD)
As holistic approach, the Marine Strategy Framework Directive poses a challenge to the scientific community: How to describe the state of the marine environment with 11 descriptors? We develop indicators, techniques in risk assessments, and integrated assessment frameworks.
Interactions between fisheries, biodiversity and food webs (BioWeb)
Climate change, declining fishing pressure, and reduced nutrient inputs are shifting structure and functions in the ecosystem of the southern North Sea. In BioWeb, we explore the links between these environmental and land-use changes and trends in biodiversity.
Using high-resolution models, we aim to better understand the combined impacts of climate change and human uses on the southern North Sea. The MuSSeL project combines geophysical with novel theoretical models to identify hot spots of change.
Oceanographic baseline monitoring: collection and provision of hydrographic data from the North Atlantic
The hydrographic conditions in the oceans, which signifcantly influence different fish habitats, vary over wide ranges of spatial and temporal scales based on a number of different physical processes. The Thünen Institute for Sea Fisheries conducts long-term observation programmes to regularly record and monitor the hydrographic parameters and make them available for further analyses.
Scientific advice in support of the common fisheries policy
In implementing the EU's Common Fisheries Policy (CFP), the EU Commission obtains scientific advice and awards individual specific contracts (studies). For this purpose, the EU Commission has concluded a framework contract with two large project consortia, covering topics for the Baltic and North Sea and the North Atlantic (SANoBA), but also other EU waters in the North-East Atlantic and outer regions such as Madeira or the Azores (SAF EU).
Coastal fisheries change. Reduced catch opportunities put enormous economic pressure on the fishers. Thereby, fisheries are not exclusively a business. Fisheries is a centuries old cultural practice, which characterises coastal communities until now.
Sustainable exploitation of North Sea and North Atlantic fish stocks
As contracting party of the International Council for the Exploration of the Sea (ICES) and EU Member State, Germany is obliged to submit national data to the scientific fish stock assessment working groups of ICES and other European organisations.
Tipping points in the socio-ecological system of the North Sea (SeaUseTip) - Main Phase
SeaUseTip is the first interdisciplinary approach to assess the vulnerability of the socio-ecological system of the North Sea to tipping points. On that basis, strategies and tools for an integrated ecosystem-based management in the face of sudden changes in the system are developed.
Hydroacoustic methods utilize sound waves to detect marine organisms. Modern echosounders can not only be used to determine stock parameters but also allow identification of habitat use, species composition and further parameters of marine ecosystems. These data are the basis for predictive models allowing estimating sustainable catch quotas.
The shallow waters of the German Bight and Wadden Sea serve as nursery grounds for several commercially important fish species. Annual abundance and growth assessments of youngfish allow for a first indication of the level of incoming catches in future years.