A5000126806- Marine animal studies overview
- Arctic and Antarctic ice dynamics
- Underwater Acoustics Research
- Animal Vocal Communication and Behavior
- Coral and Marine Ecosystems Studies
- Marine and fisheries research
- Cephalopods and Marine Biology
- Ocean Acidification Effects and Responses
- Cardiovascular and Diving-Related Complications
- Marine and coastal plant biology
- Wildlife Ecology and Conservation
- Underwater Vehicles and Communication Systems
- Neuroscience of respiration and sleep
- Turtle Biology and Conservation
- Paleontology and Evolutionary Biology
- Ichthyology and Marine Biology
- Toxic Organic Pollutants Impact
- Isotope Analysis in Ecology
- Mercury impact and mitigation studies
- Aerospace Engineering and Energy Systems
- Quality and Safety in Healthcare
- Microplastics and Plastic Pollution
- Bat Biology and Ecology Studies
- Animal Ecology and Behavior Studies
- Work-Family Balance Challenges
University of St Andrews
2015-2025
Dalhousie University
1995-2023
British Antarctic Survey
2001-2023
Fisheries and Oceans Canada
2021
Andrews University
2017
Natural Environment Research Council
2001-2003
Harvard University
1999-2000
Marine mammals can play important ecological roles in aquatic ecosystems, and their presence be key to community structure function. Consequently, marine are often considered indicators of ecosystem health flagship species. Yet, historical population declines caused by exploitation, additional current threats, such as climate change, fisheries bycatch, pollution maritime development, continue impact many mammal species, at least 25% classified threatened (Critically Endangered, Endangered or...
A population of northern bottlenose whales (Hyperoodon ampullatus) uses the Gully, a submarine canyon off coast Nova Scotia, Canada. Eleven years photo-identification records has permitted estimation size using mark-recapture techniques. The estimate was small (133 individuals, 95% CI = 111-166 from left side identifications; 127 106-160 right identifications). not closed, with combined mortality, mark change and emigration rate estimated at 13% per year for identifications (95% 9-17) 14%...
Marine predators attract significant attention in ocean conservation planning and are therefore often used politically to promote reserve designation. We discuss whether their ecology life history can help provide a rigorous ecological foundation for marine design. In general, we find that reserves benefit megafauna, megafauna establish target areas boundaries ecosystem reserves. However, the spatial nature of interplay between potential threats predator histories requires careful...
Abstract: The Gully, the largest submarine canyon off coast of eastern Canada, is currently under consideration as a marine conservation area, primarily because increasing interest in oil and gas production on Scotian Shelf. Cetaceans, guild abundant, large organisms that are relatively sensitive to such threats, provide reliable means determine boundaries for area this region. We compared abundance cetaceans between Gully other parts Shelf Slope found was higher Gully. also assessed...
Using suction–cup attached time–depth recorder/VHF radio tags, we have obtained the first diving data on northern bottlenose whales (Hyperoodon ampullatus), such any species within family Ziphiidae. Two deployments in 1997 a submarine canyon off Nova Scotia demonstrated their exceptional ability, with dives approximately every 80 min to over 800 m (maximum 1453 m), and up 70 duration. Sonar traces of non–tagged, 1996 suggest that deep are not unusual. This combined evidence leads us...
ESR Endangered Species Research Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout JournalEditorsSpecials 13:203-218 (2011) - DOI: https://doi.org/10.3354/esr00322 AS WE SEE ITMaking protected area networks effective for marine top predators Sascha K. Hooker 1,2,*, Ana Cañadas3, David Hyrenbach4, Colleen Corrigan5, Jeff J. Polovina6, Randall R. Reeves7 1Sea Mammal Unit, Scottish Oceans Institute, University of St Andrews,...
Animal-borne electronic instruments (tags) are valuable tools for collecting information on cetacean physiology, behaviour and ecology, forenhancing conservation management policies populations. Tags allow researchers to track the movement patterns, habitat use andother aspects of animals that otherwise difficult observe. They can even be used monitor physiology a taggedanimal within its changing environment. Such tags ideal identifying predicting responses anthropogenic threats, thus...
The Gully submarine canyon off eastern Canada has been designated a pilot marine protected area largely because of the northern bottlenose whales (Hyperoodon ampullatus) found there. Studies thi...
The Gully submarine canyon off eastern Canada has been designated a pilot marine protected area largely because of the northern bottlenose whales (Hyperoodon ampullatus) found there. Studies this species' diet elsewhere in North Atlantic Ocean have suggested specialization on deep-sea squid Gonatus fabricii. We high proportion congener steenstrupi stomachs two stranded Canada. In 1997, we collected remote biopsy samples from free-ranging Nova Scotia; fatty acids were determined blubber and...
Mass stranding of several species beaked whales (family Ziphiidae) associated with exposure to anthropogenic sounds has raised concern for the conservation these species. However, little is known about species' life histories, prey or habitat requirements. Without this knowledge, it becomes difficult assess effects sound, since there no way determine whether disturbance impacting physical environmental Here we take a bioenergetics approach address gap in our as elusive, deep-diving nature...
Although northern bottlenose whales were the most heavily hunted beaked whale, we have little information about this species in its remote habitat of North Atlantic Ocean. Underwater anthropogenic noise and disruption their natural may be major threats, given sensitivity other to such disturbance. We attached dataloggers 13 compared sounds movements those one individual exposed escalating levels 1–2 kHz upsweep naval sonar signals. At a received sound pressure level (SPL) 98 dB re 1 μPa,...
Abstract We radio‐tracked five male and four female rats for 6 nights in primary forest at Rotoehu, North Island. New Zealand. From trapping we estimated rat density the study site to be 6.2 rats/ha. Radio‐tracking revealed mean (± SE) restricted polygon home ranges three times greater males (1.1 ± 0.29 ha) than females (0.3 0.04 ha). Male overlapped considerably, whereas those of were largely exclusive. The encompassed several ranges. Four radio‐collared retrapped administered a lethal dose...
Despite lessons from terrestrial systems, conservation efforts in marine systems continue to focus on identifying priority sites for protection based high species richness inferred range maps. Range maps oversimplify spatial variability animal distributions by assuming uniform distribution within and de facto giving equal weight critical marginal habitats. We used Marxan ver. 2.43 compare richness‐based systematic reserve network solutions using information about mammal relative abundance....
Until the 1990s, beaked whales were one of least understood groups large mammals. Information on northern bottlenose (Hyperoodon ampullatus) and Baird’s (Berardius bairdii) was available from data collected during whaling, however, little information existed smaller species other than occasional gleaned beach-cast animals. Recent research advances have been plentiful. Increasing global survey effort, together with morphometric genetic analyses shown at 22 in this group. Longitudinal field...
As global biodiversity continues to decline, it is imperative that protected areas are delineated in such a way maximizes their effectiveness. For marine megafauna, satellite tracking data can be useful evaluate the efficacy of (MPAs), as they provide snapshot habitat preferences relation MPA boundaries. This especially informative when population case harbor seals (Phoca vitulina) The Wash, England. largest seal colony UK, but has experienced 19% decline since 2019, with no clear...
Pantropical spotted dolphins (Stenella attenuata) are found in both pelagic waters and around oceanic islands. A variety of differences exist between populations these types areas, including average group sizes, extent movements, frequency multi-species associations. Diving nighttime behaviour pantropical were studied near the islands Maui Lana'i, Hawai'i, 1999. Suction-cup-attached timedepth recorder/VHF-radio tags deployed on six for a total 29 h. Rates movements tagged substantially...