A5059457472- Marine animal studies overview
- Arctic and Antarctic ice dynamics
- Mercury impact and mitigation studies
- Indigenous Studies and Ecology
- Arctic and Russian Policy Studies
- Isotope Analysis in Ecology
- Toxic Organic Pollutants Impact
- Marine and fisheries research
- Fish Ecology and Management Studies
- Underwater Acoustics Research
- Per- and polyfluoroalkyl substances research
- Animal Vocal Communication and Behavior
- Marine Bivalve and Aquaculture Studies
- Atmospheric and Environmental Gas Dynamics
- Ichthyology and Marine Biology
- Ocean Acidification Effects and Responses
- Effects and risks of endocrine disrupting chemicals
- Microplastics and Plastic Pollution
- Zoonotic diseases and public health
- Ecology and biodiversity studies
- Fish Biology and Ecology Studies
- Food Industry and Aquatic Biology
- Aquaculture Nutrition and Growth
- Viral Infections and Vectors
- Cephalopods and Marine Biology
Fisheries and Oceans Canada
2016-2025
University of Manitoba
2014-2025
University of Saskatchewan
2004-2025
University of Prince Edward Island
2025
Government of Canada
2024
University of Ottawa
2003-2023
Yukon University
2023
University of Winnipeg
2017-2021
University of Victoria
2009-2019
Wildlife Conservation Society Canada
2019
Since the last Arctic Monitoring and Assessment Programme (AMAP) effort to review biological effects of exposure organohalogen compounds (OHCs) in biota, there has been a considerable number new effect studies. Here, we provide an update on state knowledge OHC, also include mercury, and/or associated key marine terrestrial mammal bird species as well fish by reviewing literature published since AMAP assessment 2010. We aimed at updating how single but combined health are or can be mixtures...
The trophodynamics of per- and polyfluorinated compounds bromine-based flame retardants were examined in components a marine food web from the western Canadian Arctic. animals studied their relative trophic status web, established using stable isotopes nitrogen (δ15N), beluga (Delphinapterus leucas) > ringed seal (Phoca hispida) Arctic cod (Boreogadus saida) Pacific herring (Clupea pallasi) ≈ cisco (Coregonus autumnalis) pelagic amphipod (Themisto libellula) copepod (Calanus hyperboreus)....
A rigorous synthesis of the sea-ice ecosystem and linked services highlights that supports all 4 service categories, ecosystems meet criteria for ecologically or biologically significant marine areas, global emissions driving climate change are directly to demise its services, deserves specific attention in evaluation protected area planning. The outlines (1) supporting provided form habitat, including feeding grounds nurseries microbes, meiofauna, fish, birds mammals (particularly key...
Arctic cod (Boreogadus saida) is the most abundant forage fish in Ocean. Here we review habitats, distribution, ecology, and physiology to assess how climate change other anthropogenic stressors are affecting this key species. This identifies vulnerabilities for different life stages across entire distribution range of cod. We explore impact environmental (abiotic biotic) on with a regional perspective scenario up year 2050 identify knowledge gaps constraining predictions. Epipelagic eggs...
Context Our understanding of population- and ecosystem-level processes commonly considers conspecific individuals to be ecologically equivalent. However, the same species may use resources differently, supporting prevalence individual specialisation or ‘apparent specialisation’. Individuals within a geographically defined population also exhibit complex subpopulation movements, whereby show philopatry specific regions that further drives variation. Aims White sharks (Carcharodon carcharias)...
Population segregation by habitat use occurs because energy requirements and survival strategies vary with age, sex, size, reproductive stage. From late summer to early fall in 1993, 1995, 1997, relative length (age), status of satellite-tagged beluga whales ( Delphinapterus leucas (Pallas, 1776)) the eastern Beaufort Sea were tested for segregation. We used (i) resource selection function models evaluate how belugas areas varying sea ice concentration shelf (ii) distance analysis measure...
Abstract Individual specialization ( IS ), where individuals within populations irrespective of age, sex, and body size are either specialized or generalized in terms resource use, has implications on ecological niches food web structure. Niche degree near‐top trophic‐level marine predators have been little studied polar regions with latitude. We quantified the large‐scale latitudinal variation population‐ individual‐level niche ringed seals Pusa hispida ) beluga whales Delphinapterus leucas...
Mercury in humans and other top predators living the Arctic is present at elevated levels. Since only methylmercury (MeHg) bioaccumulates food chains, sources of MeHg need to be identified. Recently, wetlands High were found produce MeHg, this was confirmed laboratory soil incubations. In study both snowmelt water evaluated as ecosystems Nunavut. Three substudies took place on Cornwallis Island, one Ellesmere Island. First, effect wetland presence lake watersheds by comparing four lakes with...
The production of dissolved gaseous mercury (DGM) in freshwater lakes is induced by solar radiation and also thought to be linked processes mediated organic carbon (DOC). Studies investigating these using comparisons between are often confounded differences DOC content structure. In this study, we investigated the link concentrations DGM tangential ultrafiltration manipulate water samples taken from a given lake. way, range with different was produced without substantial changes structure or...
Mercury (Hg) levels in the Beaufort Sea beluga (Delphinapterus leucas) population increased during 1990s; have since declined but remain higher than 1980s. The diet of this is not well-known, thus it difficult to assess dietary Hg sources. During summer, belugas segregate by length, sex, and reproductive status corresponding habitat use that may result feeding differences ultimately uptake. To test hypothesis, we examine variation using fatty acid profiles determine which biological...
MEPS Marine Ecology Progress Series Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout JournalEditorsTheme Sections 411:285-297 (2010) - DOI: https://doi.org/10.3354/meps08652 Bowhead whale Balaena mysticetus seasonal selection of sea ice Steven H. Ferguson1,2,*, Larry Dueck1, Lisa L. Loseto3, Sebastián P. Luque2 1Fisheries and Oceans Canada, 501 University Crescent, Winnipeg, Manitoba, R3T 2N6, Canada 2University...
Dedication.- Introduction.- 1. Physical, chemical, and biological conditions of the Hudson Bay marine region.- 2. Changing Sea Ice Conditions in Bay, 1979-2005.- 3. Importance eating capelin: Unique dietary habits beluga.- 4. Migration route seasonal home range Northern narwhal (Monodon monoceros).- 5. Polar bear ecology management face climate change.- 6. The rise killer whales as a major Arctic predator.- 7. ringed seal: warming climate.- 8. Past, present, future for bowhead (Balaena...
This study found that arctic beluga whales (Delphinapterus leucas) transferred, on average, 11.4% (7.5 mg) and 11.1% (0.1 of their polychlorinated biphenyl (PCB) polybrominated diphenyl ether (PBDE) blubber burden to near-term fetuses. A single physicochemical parameter, log K(OW), largely explained this transplacental transfer for PCBs (r(2) =0.79, p < 0.00001) PBDEs = 0.37, 0.007), with congeners having a K(OW) 6.5 preferentially transferred the fetus. Blubber concentrations 257 ng/g lipid...
Abstract Aim Climate change is altering marine ecosystems worldwide and most pronounced in the Arctic. Economic development increasing leading to more disturbances pressures on Arctic wildlife. Identifying areas that support higher levels of predator abundance biodiversity important for implementation targeted conservation measures across Location Primarily Canadian waters but also parts United States, Greenland Russia. Methods We compiled largest data set existing telemetry predators North...
The eastern Beaufort Sea (EBS) beluga whale Delphinapterus leucas population has experienced a 20 yr decline in inferred growth rates of individuals, which is hypothesized to have resulted from changes prey availability. We used fatty acid signatures and stable isotope ratios reconstruct the proportional contributions 14 species diets 178 whales 2011 2014. Prey estimates using quantitative signature analysis suggest that EBS primarily consume Arctic cod Boreogadus saida , highly sensitive...