A5082003523- Marine animal studies overview
- Aquaculture Nutrition and Growth
- Mercury impact and mitigation studies
- Underwater Acoustics Research
- Toxic Organic Pollutants Impact
- Environmental Toxicology and Ecotoxicology
- Animal Vocal Communication and Behavior
- Maritime Navigation and Safety
- Marine and fisheries research
- Cephalopods and Marine Biology
- Reproductive biology and impacts on aquatic species
- Marine Bivalve and Aquaculture Studies
- Thyroid Disorders and Treatments
- Isotope Analysis in Ecology
- Heavy Metal Exposure and Toxicity
- Underwater Vehicles and Communication Systems
- Protein Hydrolysis and Bioactive Peptides
- Meat and Animal Product Quality
- Arctic and Antarctic ice dynamics
- Marine and coastal plant biology
- Microplastics and Plastic Pollution
- Neurobiology and Insect Physiology Research
- Coral and Marine Ecosystems Studies
- Fish Biology and Ecology Studies
- Per- and polyfluoroalkyl substances research
University of Veterinary Medicine Hannover, Foundation
2015-2025
University of Liège
2008-2021
Anthropogenic underwater noise can affect animal behaviour, which in turn is influenced by other intrinsic and extrinsic factors. In this case study, we explored links between health on 18 free-ranging harbour seals (Phoca vitulina) the Elbe estuary Wadden Sea. Individuals were captured blood samples taken to assess status through leukograms molecular biomarkers indicative of stress, sound exposure immunological status. Seals fitted with long-term movement tags (DTAGs), recording...
Our study reports the first data on mercury (Hg) isotope composition in marine European fish, for seven distinct populations of seabass, Dicentrarchus labrax. The use δ202Hg and Δ199Hg values SIBER enabled us to estimate Hg isotopic niches, successfully discriminating several populations. Recursive-partitioning analyses demonstrated relevance stable isotopes as tools. also provided insight contamination sources biota coastal environment. overall narrow range around Europe was suggested be...
Acoustic deterrent devices (ADDs) are used to deter seals from aquacultures but exposure of harbour porpoises (Phocoena phocoena) occurs as a side-effect. At construction sites, by contrast, ADDs the zone in which pile driving noise can induce temporary threshold shifts (TTSs). emit such high pressure levels that there is concern themselves may TTS. A porpoise human care was exposed an artificial ADD signal with peak frequency 14 kHz. significant TTS found, measured auditory evoked...
The European brown hare (Lepus europaeus) is a quite adaptable species, but populations have been decreasing for several decades in different countries, including Germany. To investigate infectious diseases as possible influences on observed population decline the German federal state Schleswig-Holstein, 118 deceased free-ranging hares were collected between 2017 and 2020 underwent detailed postmortem examination with extended sampling. Infectious major cause of death (34.7%). number...
Exploitation of renewable energy from offshore wind farms is substantially increasing worldwide. The majority turbines are bottom mounted, causing high levels impulsive noise during construction. To prevent temporary threshold shifts (TTS) in harbor porpoise hearing, single strike sound exposure (SELSS) restricted Germany by law to a maximum 160 dB re 1 μPa2s at distance 750 m the source. Underwater recordings pile driving strikes, recorded construction an farm German North Sea, were...
Abstract The harbour porpoise ( Phocoena phocoena ) is considered part of the ‘Outstanding Universal Value’ characterising Wadden Sea World Heritage Site (WS WHS). Trilateral Plan aims to preserve conservation status Cooperation Area, encompassing WS WHS. plan has specified two targets for porpoise: (1) viable stocks and a natural reproduction capacity (2) habitat quality its conservation. To assess current occurrence in area, we collated analysed data from regional national research...
Abstract The North Sea faces intense ship traffic owing to increasing human activities at sea. As harbour seals ( Phoca vitulina ) are abundant top predators in the Sea, it is hypothesised that they experience repeated, high-amplitude vessel exposures. Here, we test this hypothesis by quantifying noise exposures from deployments of long-term sound and movement tags (DTAGs) on nine Wadden Sea. An automated tool was developed detect intervals elevated recordings. assessment multiple raters...
The thyroid plays an important role in development and is of primary importance metabolism heat loss for cetaceans, including the harbor porpoise (Phocoena phocoena). Several studies have demonstrated that environmental contaminants can alter various aspects function mammals may contribute to histologic changes. present study completes data set a 2006 by Das et al., performing histological immunohistologic investigations on thyroids 36 porpoises from Belgian United Kingdom waters. number...
Abstract Several mass strandings of sperm whales occurred in the North Sea during January and February 2016. Twelve animals were necropsied sampled around 48 h after their discovery on German coasts Schleswig Holstein. The present study aims to explore morphological variation primary sensory organ whales, left right auditory system, using high-resolution computerised tomography imaging. We performed a quantitative analysis size shape cochleae landmark-based geometric morphometrics reveal...
The Marine Strategy Framework Directive (MSFD) aims to reduce the marine debris burden in environment by 2020. This requires an assessment of actual situation, which includes occurrence as well caused impacts. Information on both is scarce when it comes top predators like mammals and microplastic. hampered limited access free ranging for collecting samples, sample handling. present study investigated gastrointestinal tracts faecal samples harbour seals (Phoca vitulina) grey (Halichoerus...
Convergent evolution of small body size occurs across many vertebrate clades and may reflect an evolutionary response to shared selective pressures. However it remains unclear if other aspects phenotype undergo convergent in miniaturized lineages. Here we present a comparative analysis shape marine angelfishes (Pomacanthidae), reef fish family characterized by repeated transitions size. We ask lineages that evolve sizes show shape. Our results reveal angelfish evolved three different stable...
Seafood has a great ecological and nutritional value for human wildlife communities. However, accumulation of mercury (Hg) in fish is concern to animal health. There crucial need understand Hg speciation marine organisms through controlled feeding experiments. This study represents first assessment the biological processes that may influence bioaccumulation dynamics predatory fish. We conducted experiment investigate MeHg iHg, as well isotopes liver muscles captive juvenile seabass (...