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Report: Investigating Thermal Regimes of the Upper Peace River Basin Summary Report Year 2 FWCP Project No. PEA-F24-F-3845
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If you have any questions on the information presented, or require additional report data or attachments, please contact the Report Contact
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Climate change is an emerging issue for aquatic ecosystems in British Columbias (BC) Peace Region (FWCP 2020). Regional climate projections include decreased streamflow, considerably warmer summers, warmer winter temperatures and increased precipitation falling as rain instead of snow (Fraser Basin Council 2019).
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Author: Bryce O Connor
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Old Reference Number: PEA-F24-F-3845
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Old Reference System: FWCP - Fish Wildlife Compensation Program Peace
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Date Published: Jun 2024
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Report ID: 63102
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Audience: Government and Public
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Aquatic ecosystems have been identified as vulnerable to increased air temperatures due to their low thermal inertia and high temperature variability (IPCC 2014). Despite the general perception that the thermal environment in running freshwater is homogeneous, streams exhibit substantial thermal variability at the reach, watershed and basin scales (Kurylyk et al. 2015). Aquatic ectotherms have adapted to live in these complex thermal regimes where thermal heterogeneity is driven by atmospheric conditions, elevation-temperature gradients, groundwater, topographic complexity, and land cover change (Sagar and Colbourd 2004; Caissie 2006). Indeed, temperature has been described as a master variable for freshwater fishes (Kingsolver 2009). The spatio-temporal availability of thermal habitats is one of the most important drivers of fish distribution and migrations in freshwater environments (Lucas and Baras 2001; Isaak et al. 2010). A contemporary approach to monitoring and modeling freshwater thermal habitat availability is needed to advise modernized land use planning and investigate the causes of observed trends in the abundance and distribution of priority aquatic species Bull Trout (Salvelinus confluentus) and Arctic Grayling (Thymallus arcticus) as illuminated by other FWCP funded projects (O Connor et al. 2024; Hagen and Stamford 2022).
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Report Type
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Fish and Aquatic Habitat Information |
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Subject
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Fish Species - Arctic Grayling - Thymallus arcticus |
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Fish Species - Bull Trout - Salvelinus confluentus |
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Region - Peace |
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Fish and Fish Habitat - Habitat and Stream Assessment |
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Fish and Fish Habitat - Telemetry |
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Fish and Fish Habitat - Temperature Sensitive Stream |
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