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Article
Open AccessTrackdAT, an acoustic telemetry metadata dataset to support aquatic animal tracking research
Data on the movement and space use of aquatic animals are crucial to understand complex interactions among biotic and abiotic components of ecosystems and facilitate effective conservation and management. Acou...
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Article
Open AccessChanging environmental conditions have altered the feeding ecology of two keystone Arctic marine predators
Environmental change in the Arctic has impacted the composition and structure of marine food webs. Tracking feeding ecology changes of culturally-valued Arctic char (Salvelinus alpinus) and ringed seals (Pusa his...
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Article
Tracking the early stages of an invasion with biotelemetry: behaviour of round goby (Neogobius melanostomus) in Canada’s historic Rideau Canal
The round goby (Neogobius melanostomus), native to the Black and Caspian Seas, is one of the most wide-ranging invasive fishes, having established in much of Europe and North America. In 2019, round goby were dis...
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Article
Open AccessStrong thermal stratification reduces detection efficiency and range of acoustic telemetry in a large freshwater lake
The successful use of acoustic telemetry to detect fish hinges on understanding the factors that control the acoustic range. The speed-of-sound in water is primarily a function of density, and in freshwater la...
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Article
Broad feeding niches of capelin and sand lance may overlap those of polar cod and other native fish in the eastern Canadian Arctic
As ocean temperatures rise, sub-Arctic capelin (Mallotus villosus) and sand lance (Ammodytes spp.) have become increasingly abundant in regions of the eastern Canadian Arctic. These fish have a similar trophic ro...
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Article
Open AccessIdentification of predation events in wild fish using novel acoustic transmitters
Acoustic telemetry is a commonly used tool to gain knowledge about aquatic animal ecology through the study of their movements. In telemetry studies researchers must make inferences regarding the movements and...
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Article
Open AccessThe influence of dynamic environmental interactions on detection efficiency of acoustic transmitters in a large, deep, freshwater lake
Acoustic telemetry is an increasingly common method used to address ecological questions about the movement, behaviour, and survival of freshwater and marine organisms. The variable performance of acoustic tel...
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Article
Open AccessComparative Brain Morphology of the Greenland and Pacific Sleeper Sharks and its Functional Implications
In cartilaginous fishes, variability in the size of the brain and its major regions is often associated with primary habitat and/or specific behavior patterns, which may allow for predictions on the relative i...
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Article
Feeding ecology of a common benthic fish, shorthorn sculpin (Myoxocephalus scorpius) in the high arctic
Shorthorn sculpin (Myoxocephalus scorpius) commonly occur in nearshore areas during open water periods in the Arctic, yet little is known about their feeding strategies or trophic roles. This study used carbon (δ
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Article
Bioaccumulation of Polychlorinated Biphenyls (PCBs) in Atlantic Sea Bream (Archosargus rhomboidalis) from Kingston Harbour, Jamaica
Multiple sizes of Sea bream were collected from Kingston Harbour, Jamaica, to assess steady state bioaccumulation of polychlorinated biphenyls (PCBs) in a tropical fish. Sea beam fork lengths ranged from 7.3 t...
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Article
Differential invasion success in aquatic invasive species: the role of within- and among-population genetic diversity
Despite a well-developed theoretical basis for the role of genetic diversity in the colonization process, contemporary investigations of genetic diversity in biological invasions have downplayed its importance...
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Article
Invasive species alter ontogenetic shifts in the trophic ecology of Lake Sturgeon (Acipenser fulvescens) in the Niagara River and Lake Ontario
Species invasions can alter food web structure and change ecosystem-level functioning, but it is often unclear how these invasions may affect the life history of native species. The Lake Sturgeon (Acipenser fulve...
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Article
Capture-induced stress in deep-water Arctic fish species
There are significant conservation benefits to studying the stress response of commercially important fish species. Particularly in the Arctic ecosystem, where reducing ice extent has resulted in heightened in...
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Article
A review of Greenland shark (Somniosus microcephalus) studies in the Kongsfjorden area, Svalbard Norway
Herein, we review and synthesize results from a series of research projects that were conducted to evaluate the role of Greenland sharks (Somniosus microcephalus) in the marine ecosystem in Kongsfjorden, Svalbard...
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Article
Using bomb radiocarbon to estimate age and growth of the white shark, Carcharodon carcharias, from the southwestern Indian Ocean
Knowledge of age and growth parameters is vital to the conservation and management of white sharks (Carcharodon carcharias), but ages have not been validated for all populations and growth rates can vary regional...
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Article
Spatial and temporal variation of an ice-adapted predator’s feeding ecology in a changing Arctic marine ecosystem
Spatial and temporal variation can confound interpretations of relationships within and between species in terms of diet composition, niche size, and trophic position (TP). The cause of dietary variation withi...
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Article
Niche plasticity in invasive fishes in the Great Lakes
The geographic range of an invasive species is a key determinant of relative impact in the invaded region. Comparison of invasive species that are widespread or rare in invaded ranges can highlight mechanistic...
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Article
Juvenile Greenland sharks Somniosus microcephalus (Bloch & Schneider, 1801) in the Canadian Arctic
Life-stage-based management of marine fishes requires information on juvenile habitat preferences to ensure sustainable population demographics. This is especially important in the Arctic region given very lit...
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Article
Loss of seasonal variability in nekton community structure in a tidal river: evidence for homogenization in a flow-altered system
Modifications to riverine systems that alter freshwater inflow to downstream estuarine habitats have resulted in altered patterns of nekton distribution and abundance. To examine how nekton assemblages respond...
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Article
Effects of lipid extraction and the utility of lipid normalization models on δ13C and δ15N values in Arctic marine mammal tissues
Animals store lipids, which are 13C-depleted, in their tissues that often must be extracted to correctly interpret δ13C data. However, chemical lipid extraction (CLE) can alter δ15N values and lipid normalization...
