Knowledge Tree
Arctic char
Also known as: Salvelinus alpinus, iqalukpik
Facts (14)
Sources
A review of climate change impacts on migration patterns of marine ... frontiersin.org Oct 25, 2024 14 facts
claimSea surface temperatures (SSTs) impact estuarine use by Arctic char, as these habitats are typically occupied when the ocean is relatively cold, meaning warming temperatures could decrease movement into estuaries.
referenceHarris et al. (2020) studied the depth and temperature preferences of anadromous Arctic char (Salvelinus alpinus) in the Kitikmeot Sea, a shallow and low-salinity area of the Canadian Arctic.
referenceFalardeau et al. (2022) published 'Biophysical indicators and Indigenous and Local Knowledge reveal climatic and ecological shifts with implications for Arctic Char fisheries' in Global Environmental Change, discussing impacts on Arctic Char.
claimR. Smith, E. Hitkolok, T. Loewen, A. Dumond, K. Kristensen, and H. Swanson studied the overwintering ecology and movement of anadromous Arctic char (Salvelinus alpinus) in a large, ice-covered river in the Canadian Arctic in 2022.
referenceArctic char (Salvelinus alpinus) exhibit distinct freshwater migratory pathways that coincide with separate patterns of marine spatial habitat-use across a large coastal landscape, according to a 2022 study by Hollins et al.
referencePearce, T., Gallagher, C. P., Lea, E. V., Kudlak, G., Pettitt-Wade, H., and Smart, J. published the paper 'Inuit traditional ecological knowledge of anadromous Arctic char, iqalukpik (Salvelinus alpinus) under changing climatic conditions in the Amundsen Gulf, western Canadian Arctic' in the journal Arctic in 2024.
claimArctic char and Dolly Varden track their preferred temperature isopleths in the ocean, which can shift spatially from year to year, altering their marine distribution.
claimArctic char might become harder to harvest in shore-based gill net fisheries during summer because the fish follow preferred cooler temperatures to deeper areas farther from shore.
referenceA 2022 report by Harris et al. discussed the status of Arctic char in a rapidly changing North.
claimMarine temperature and depth use by anadromous Arctic char correlates to body size and diel period.
referenceA 2022 study by Hammer et al. analyzed the movement dynamics of Arctic char (Salvelinus alpinus) relative to ice breakup in a high Arctic embayment.
claimResearch on how climate change affects migration has focused more on Atlantic salmon (Salmo salar), Arctic char (Salvelinus alpinus), and brown trout (Salmo trutta) compared to coregonines and endemic populations of Pacific salmon north of the Bering Strait.
measurementArctic char and Dolly Varden in Arctic North America are surface-oriented species that typically occupy depths of less than 5 meters and prefer water temperatures between approximately 2°C and 8°C.
claimClimate change effects on fisheries for Arctic char and Dolly Varden during the open water season raise concerns regarding altered marine habitat use, diet changes affecting flesh quality, exposure to contaminants, and interactions with non-endemic species.