A5013454168- Marine animal studies overview
- Arctic and Antarctic ice dynamics
- Underwater Acoustics Research
- Marine and fisheries research
- Animal Vocal Communication and Behavior
- Wood Treatment and Properties
- Marine and coastal plant biology
- Forest ecology and management
- Avian ecology and behavior
Aarhus University
2020-2024
University of Southern Denmark
2023
University of Copenhagen
2023
University of Auckland
2021
Cooperative Institute for Research in Environmental Sciences
2021
University of Washington
2021
British Antarctic Survey
2020-2021
Scottish Association For Marine Science
2021
Around 176500 whales were killed in the sub-Antarctic waters off South Georgia (South Atlantic) between 1904 and 1965. In recent decades, have once again become summer visitors, with southern right whale (SRW) most commonly reported species until 2011. Here, we assess distribution, temporal pattern, health status likely prey of SRWs these waters, combining observations from a summertime vessel-based expedition to Georgia, stable isotope data collected putative sightings reports collated by...
As species recover from exploitation, continued assessments of connectivity and population structure are warranted to provide information for conservation management. This is particularly true in with high dispersal capacity, such as migratory whales, where patterns could change rapidly. Here we build on a previous long-term, large-scale collaboration southern right whales (Eubalaena australis) combine new (nnew) published (npub) mitochondrial (mtDNA) microsatellite genetic data all major...
Longitudinal data on individual growth and seasonal changes in body mass, girth, blubber thickness are rarely available for cetaceans, making it difficult to assess their population composition nutritional condition. During different time intervals from 1997 2020, we collected longitudinal length, girth,and seventeen harbour porpoises (Phocoena phocoena) human care. We compared Gompertz von Bertalanffy curves length at age 0–4 years five individuals with known dates of birth. Von had the...
Southern right whale vocalizations were recorded concurrently with visual observations off the sub-Antarctic Island of South Georgia, and characteristics these calls described. Calls also compared to those humpback whales at determine how two species might reliably be distinguished acoustically. The southern measured (which all upcalls) had lower frequency peak energy mostly shorter in duration than from whales. upsweep lack harmonics diagnostic characteristics.
Seal scarers (or acoustic harassment devices, AHDs) are designed to deter seals from fishing gear and aquaculture operations, as well prevent entering rivers avoid predation on valuable fish. Our study investigated the potential effects of AHDs non-target species, specifically Eurasian otters (Lutra lutra), by testing reaction two rehabilitated simulated sounds at 1 14 kHz, with a received sound intensity 105-145 dB re µPa rms. The kHz were used investigate alternative frequencies for...
Introduction Drones, or Unmanned Aerial Vehicles (UAVs), have emerged as valuable tools for wildlife monitoring, offering potentially non-intrusive observations in challenging terrains like marine ecosystems. Despite their potential, widespread use is impeded by regulatory constraints, especially protected areas. Methods This study aims to assess the impact of varying flight altitudes and approaches two commercial drones on behaviour harbour seals ( Phoca vitulina ) grey Halichoerus grypus...