Assessing the impact of climate change and a water management programme on white sturgeon physiology in the Nechako River, British Columbia DOI Creative Commons
Muhammed A. Oyinlola, Mostafa Khorsandi, Rachael Penman

et al.

Conservation Physiology, Journal Year: 2025, Volume and Issue: 13(1)

Published: Jan. 1, 2025

Climate change is impacting river ecosystems, underlining the need for water management strategies to protect native species within these ecosystems. Here, we evaluate impact of climate and on physiology white sturgeon (Acipenser transmontanus) in Nechako River, British Columbia (Canada). Using CEQUEAU hydrological-thermal model, simulated daily temperatures from 1980 2099 under two scenarios (SSP2-4.5 SSP5-8.5). We assessed thermal exposure risk (Te ) different developmental stages sturgeon, focusing warmest 6-month period. Our findings show that embryos yolk-sac larvae exhibit resilience, with Te values consistently <1 both scenarios, signifying low stress. In contrast, feeding juveniles experience elevated values, indicating significant future For larvae, exceeded 1 reaching up 1.5 by mid-century (2050s) 1.8 end century (2090s) SSP5-8.5. Juvenile also faced increased risks, rising >1 during July August, 1.4 2050s 2.0 2090s SSP5-8.5, compared 1980s. These results underscore existing programme better accommodate projected changes conditions associated change. Additionally, regulated discharge, which can increase decrease downstream temperatures, offers a strategic opportunity mitigate some impacts through dam discharge management.

Language: Английский

Assessing the impact of climate change and a water management programme on white sturgeon physiology in the Nechako River, British Columbia DOI Creative Commons
Muhammed A. Oyinlola, Mostafa Khorsandi, Rachael Penman

et al.

Conservation Physiology, Journal Year: 2025, Volume and Issue: 13(1)

Published: Jan. 1, 2025

Climate change is impacting river ecosystems, underlining the need for water management strategies to protect native species within these ecosystems. Here, we evaluate impact of climate and on physiology white sturgeon (Acipenser transmontanus) in Nechako River, British Columbia (Canada). Using CEQUEAU hydrological-thermal model, simulated daily temperatures from 1980 2099 under two scenarios (SSP2-4.5 SSP5-8.5). We assessed thermal exposure risk (Te ) different developmental stages sturgeon, focusing warmest 6-month period. Our findings show that embryos yolk-sac larvae exhibit resilience, with Te values consistently <1 both scenarios, signifying low stress. In contrast, feeding juveniles experience elevated values, indicating significant future For larvae, exceeded 1 reaching up 1.5 by mid-century (2050s) 1.8 end century (2090s) SSP5-8.5. Juvenile also faced increased risks, rising >1 during July August, 1.4 2050s 2.0 2090s SSP5-8.5, compared 1980s. These results underscore existing programme better accommodate projected changes conditions associated change. Additionally, regulated discharge, which can increase decrease downstream temperatures, offers a strategic opportunity mitigate some impacts through dam discharge management.

Language: Английский

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