A5031631779- Marine and fisheries research
- Fish Ecology and Management Studies
- Parasite Biology and Host Interactions
- Avian ecology and behavior
- Isotope Analysis in Ecology
- Genetic diversity and population structure
- Geology and Paleoclimatology Research
- Education Systems and Policy
- Arctic and Antarctic ice dynamics
- Marine animal studies overview
- Research in Social Sciences
- Indigenous and Place-Based Education
- Bird parasitology and diseases
- Animal Vocal Communication and Behavior
- Underwater Acoustics Research
- Marine and environmental studies
- Fish Biology and Ecology Studies
- Animal Behavior and Reproduction
- Education in Diverse Contexts
- Mercury impact and mitigation studies
- Indigenous Studies and Ecology
- Geological Studies and Exploration
- Higher Education Learning Practices
University of Glasgow
2019
Pacific Salmon Foundation
2007-2012
Fisheries and Oceans Canada
1980-2006
University of British Columbia
1982
Simon Fraser University
1982
Harvard University
1980-1982
Background Pathogens are growing threats to wildlife. The rapid growth of marine salmon farms over the past two decades has increased host abundance for pathogenic sea lice in coastal waters, and wild juvenile swimming frequently infected with lice. Here we report first investigation potential role transmitting sockeye (Oncorhynchus nerka). Methodology/Principal Findings We used genetic analyses determine origin from Canada's most important rivers, Fraser Skeena; migrate through a region...
The resilience of coastal social-ecological systems may depend on adaptive responses to aquaculture disease outbreaks that can threaten wild and farm fish. A nine-year study parasitic sea lice (Lepeophtheirus salmonis) pink salmon (Oncorhynchus gorbuscha) from Pacific Canada indicates changes in parasite management farms have yielded positive conservation outcomes. After four years epizootics population decline, parasiticide application was adapted the timing migrations. Winter treatment...
Net-pen salmon aquaculture has well-known effects on coastal ecosystems: farm waste increases sediment organic content and the incidence of anoxia, supports increased production deposit-feeding invertebrates, attracts higher densities demersal fish other mobile carnivores. These impacts are widely considered to be localized transitory, commonly managed by imposing a period fallowing between cycles production. The implications these ecosystemic for contaminant cycling, however, have not...
Abstract Recent infestations of sea lice Lepeophtheirus salmonis on wild juvenile pink salmon Oncorhynchus gorbuscha and subsequent declines in the number returning adult have raised concern for health fish relative to farming activities Broughton Archipelago, British Columbia. I used available (but limited) industry data estimate louse egg production from Atlantic Salmo salar farmed by Stolt Sea Farm (now Marine Harvest Canada, Inc., Campbell River, Columbia) 2003 2004. The 12 active farms...
The seasonal occurrence and distribution of Ivory Gulls Pagophila eburnea in Davis Strait the Labrador Sea may be explained by food concentrations along pack ice edge reduced light levels biological production to north.This species, which breeds farther north east, was absent only during short ice-free period from late June October.From February through June, probably longer, gulls were concentrated near edge, where they fed on lanternfishes (Myctophidae) April May Strait.Hooded Seal...
Aerial surveys were used to assess the timing and route of swimming migration Thick-billed Murres (Uria lomvia) near southern Baffin Island northern Labrador in autumn 1977, 1978 1979. Several hundred thousand adults chicks from six area colonies departed east through Hudson Strait, direction surface currents, latter half August. Most murres three eastern Strait offshore waters early September, arrived Sea within a few days, followed later September by western colonies. From Sea, go marine...
Female black-capped chickadees (Parus atricapillus), besides searching for their own food, "demand" food from mates in the spring extra energy needed to produce and incubate eggs. This behaviour signals readiness copulate it is followed by increased levels of male – aggression, probably prevent cuckoldry. Increased aggression owing limited nest site availability may also be locally important. Subordinate pairs disperse many presumably die. The allows females with sites breed earlier than if...
Passerine birds were recorded in southern Davis Strait and northern Labrador Sea (59-66°N) during eight cruises 1977 1978, from a stationary drillship 10 July to 7 October 1979.Most spring sightings April May of Snow Buntings (Plectrophenax nivalis), which apparently migrating North America wintering areas southwest Greenland breeding sites.A limited fall migration was witnessed for Buntings, more pronounced movement observed the Lapland Longspur (Calcarius lapponicus) late August...