A5087519515- Marine animal studies overview
- Avian ecology and behavior
- Animal Behavior and Reproduction
- Wildlife Ecology and Conservation
- Animal Vocal Communication and Behavior
- Arctic and Antarctic ice dynamics
- Underwater Acoustics Research
- Marine and fisheries research
- Fish Ecology and Management Studies
Aarhus University
2023-2024
Norwegian Polar Institute
2024
University of Cambridge
2020-2022
British Antarctic Survey
2020-2022
Natural Environment Research Council
2020-2022
Recreational boats are common in many coastal waters, yet their effects on cetaceans and other sensitive marine species remain poorly understood. To address this knowledge gap, we used drone video footage recorded from a recreational boat to quantify how harbour porpoises (
Shipping is the most pervasive source of marine noise pollution globally, yet its impact on sensitive fauna remains unclear. We tracked 10 harbour porpoises for 5-10 days to determine exposure and behavioural reactions modelled broadband (10 Hz-20 kHz, VHF-weighted) from individual ships monitored by AIS. Porpoises spent a third their time experiencing ship above ambient, which they regularly reacted moving away during daytime diving deeper night. However, even >2 km (noise levels 93 ± 14 dB...
Optimal selection of foraging habitats is key to survival, but it remains unclear how naïve individuals are able locate patchily‐distributed resources and maximize energy gain in completely new environments. In most animals, juveniles disperse unaccompanied by their parents, hence movements likely guided, at least fine scales, external cues. However, the extent which environmental processes individual learning shape habitat movement strategies unclear, especially species with cryptic...
Abstract Aim Determining the drivers of movement different life‐history stages is crucial for understanding age‐related changes in survival rates and, marine top predators, link between fisheries overlap and incidental mortality (bycatch), which driving population declines many taxa. Here, we combine individual tracking data a model to investigate environmental conservation implications divergent patterns juveniles (fledglings) adults threatened seabird, white‐chinned petrel ( Procellaria...
Foraging performance is widely hypothesized to play a key role in shaping age-specific demographic rates wild populations, yet the underlying behavioral changes are poorly understood. Seabirds among longest-lived vertebrates, and demonstrate extensive age-related variation survival, breeding frequency success. The season particularly critical phase during annual cycle, but it remains unclear whether differences experience or physiological condition related age interact with changing degree...
Abstract Many seabirds dive to forage, and the ability use this hunting technique varies according such factors as morphology, physiology, prey availability, ambient light levels. Proficient divers are more able seize sinking baits deployed by longline fishing vessels may return them surface, increasing exposure of other species. Hence, diving has major implications for mitigating incidental mortality (bycatch) in fisheries. Here, behaviour activity patterns most bycaught seabird species...
Recreational boats are common in many coastal waters, yet their effects on cetaceans and other sensitive marine species remain poorly understood. To address this knowledge gap, we used drone videos to quantify how harbour porpoises (Phocoena phocoena) responded a small motorboat approaching at different speeds (10 or 20 knots). The experiment was carried out shallow waters near Funen, Denmark (55.51° N, 10.79° E) between July September 2022. Porpoises moved further away from the boat path...
The EU-funded SATURN project contributes to improve our understanding of the effects ship noise on aquatic animals through several studies. Assessing underwater is complex due diversity taxa involved, each with their own sound sensitivity in terms spectral and temporal aspects, as well behavioural physiological acoustic disturbances. To conduct exposure experiments fish invertebrates that are sensitive particle motion component sound, we have developed innovative laboratory setups....
Abstract Seabirds often spend time on the water in vicinity of their breeding colonies at start or end foraging trips, which may be for bathing, social interaction, information transfer, to reduce predation risk small petrels that prefer return land darkness. Although such behaviour (hereafter rafting) is common, there are few data variation its incidence timing across species, analyses relationships with intrinsic extrinsic factors as stage (reflecting central-place constraints) weather....