Capacity of Two Sierra Nevada Rivers for Reintroduction of Anadromous Salmonids: Insights from a High‐Resolution View DOI
David A. Boughton, Lee R. Harrison, Sara N. John

et al.

Transactions of the American Fisheries Society, Journal Year: 2021, Volume and Issue: 151(1), P. 13 - 41

Published: Dec. 6, 2021

Abstract Historically, anadromous steelhead Oncorhynchus mykiss and spring‐run Chinook Salmon O. tshawytscha used high‐elevation rivers in the Sierra Nevada of California but were extirpated 20th century by construction impassable dams. Plans to reintroduce fish opening migratory passage across dams reservoirs can only succeed if upstream habitats have capacity support viable populations each species. To estimate Tuolumne Merced central Nevada, we a high‐resolution approach based on remote sensing dynamic habitat modeling. Our results suggested that for both species systems, sediment grain sizes would widespread spawning water temperatures, depths, velocities generate ample fry juveniles. However, unregulated River was consistently too warm adult hold dry season prior spawning, while regulated maintained cooler, more stable thermal regime with thousands holding adults. In our approach, also discovered several specific physical controls life history expression, including constraints timing hydraulic prompts downstream migration fry, divergence niches Salmon, key uncertain role tolerance Salmon. reintroduction could either system strategies account large numbers migrant juveniles driven winter storms snowmelt. The appeared which raises questions about current limited understanding study shows how provide valuable insights limiting factors must be addressed succeed.

Language: Английский

Behavioural responses to acute warming precede critical shifts in the cellular and physiological thermal stress responses in fish DOI Creative Commons
Travis Durhack, Matt J. Thorstensen, Theresa E. Mackey

et al.

bioRxiv (Cold Spring Harbor Laboratory), Journal Year: 2024, Volume and Issue: unknown

Published: Feb. 1, 2024

From a conservation perspective, it is important to identify when sub-lethal temperatures begin adversely impact an organism. However, unclear whether, during acute exposures, these cellular thresholds occur at similar other physiological or behavioural changes. To test this, we estimated temperature preference (15.1 ± 1.1 °C) using shuttle box, thermal optima for aerobic scope (10—15 respirometry, agitation (22.0 1.4 as the point where fish exhibits avoidance response and CTmax (28.2 0.4 upper limit 1 yr old Brook Trout (Salvelinus fontinalis) acclimated 10 °C. We then acutely exposed different subset of sampled tissues they reached target after 60 min recovery used qPCR estimate mRNA transcript levels genes associated with heat shock proteins, oxidative stress, apoptosis, inducible transcription factors. A major shift in transcriptome occurred near temperature, which may link between stress response.

Language: Английский

Citations

1
Fishway performance of adult Chinook salmon completing one of the world's longest inland salmon migrations to the upper Yukon River DOI
William M. Twardek, Steven J. Cooke,

N. W. R. Lapointe

et al.

Ecological Engineering, Journal Year: 2022, Volume and Issue: 187, P. 106846 - 106846

Published: Nov. 21, 2022

Language: Английский

Citations

6
Differential heat shock protein responses in two species of Pacific salmon and their utility in identifying heat stress DOI Creative Commons
Vanessa R. von Biela, Amy M. Regish, Lizabeth Bowen

et al.

Conservation Physiology, Journal Year: 2023, Volume and Issue: 11(1)

Published: Jan. 1, 2023

Rapid and accelerating warming of salmon habitat has the potential to lower productivity Pacific (Oncorhynchus species) populations. Heat stress biomarkers can indicate where is most likely affecting fish populations; however, we often lack clear classifications that separate individuals with without heat needed make these tools operational. We conducted a exposure experiment trials lasting 12 or 36 h using juvenile Chinook tshawytscha) coho kisutch) validate in white muscle. Following habituation 13°C, were exposed water temperatures increased 15°C, 17°C, 19°C, 21°C 23°C. shock protein 70 abundance (HSP70 measured by ELISA) transcription 13 genes (mRNA qPCR) including three (hsp70, hsp90, hsp27) measured. A distinct response was apparent 23°C HSP70. threshold for classification > 2 ng HSP70 mg.1 total identified 100% 21 treated compared 4% cooler treatments. For salmon, 3 Transcription from panel separated between stressful temperature experiences (≥21°C ≥23°C salmon) ~ 85% correct classification. Our findings more temperature-sensitive than support use sampled muscle assessing individual wild an option non-lethal biopsies spawning adults.

Language: Английский

Citations

3
Socio-hydrological modeling of the tradeoff between flood control and hydropower provided by the Columbia River Treaty DOI Creative Commons
Ashish Shrestha, Felipe Augusto Arguello Souza, Samuel Park

et al.

Hydrology and earth system sciences, Journal Year: 2022, Volume and Issue: 26(19), P. 4893 - 4917

Published: Oct. 6, 2022

Abstract. The Columbia River Treaty (CRT) signed between the United States and Canada in 1961 is known as one of most successful transboundary water treaties. Under continued cooperation, both countries equitably share collective responsibilities reservoir operations flood control hydropower benefits from treaty dams. As balance key factor future cooperation could be challenged by external social environmental factors which were not originally anticipated or change preferences two actors. To understand robustness dynamics, we address research questions. (i) How does influence dynamics? (ii) do probability for actors? We analyzed infrastructural, hydrological, economic, social, data to inform development a socio-hydrological system dynamics model. model simulates benefit sharing function cooperate, turn affected benefits. used evaluate scenarios that represent institutional changes political characteristics based on preferences. Our findings show stronger capacity ensures equitable over long term. current CRT, utility always higher than non-cooperation, contrast States. cooperate each country lowest when they are self-interested but fluctuates other preference scenarios.

Language: Английский

Citations

5
Capacity of Two Sierra Nevada Rivers for Reintroduction of Anadromous Salmonids: Insights from a High‐Resolution View DOI
David A. Boughton, Lee R. Harrison, Sara N. John

et al.

Transactions of the American Fisheries Society, Journal Year: 2021, Volume and Issue: 151(1), P. 13 - 41

Published: Dec. 6, 2021

Abstract Historically, anadromous steelhead Oncorhynchus mykiss and spring‐run Chinook Salmon O. tshawytscha used high‐elevation rivers in the Sierra Nevada of California but were extirpated 20th century by construction impassable dams. Plans to reintroduce fish opening migratory passage across dams reservoirs can only succeed if upstream habitats have capacity support viable populations each species. To estimate Tuolumne Merced central Nevada, we a high‐resolution approach based on remote sensing dynamic habitat modeling. Our results suggested that for both species systems, sediment grain sizes would widespread spawning water temperatures, depths, velocities generate ample fry juveniles. However, unregulated River was consistently too warm adult hold dry season prior spawning, while regulated maintained cooler, more stable thermal regime with thousands holding adults. In our approach, also discovered several specific physical controls life history expression, including constraints timing hydraulic prompts downstream migration fry, divergence niches Salmon, key uncertain role tolerance Salmon. reintroduction could either system strategies account large numbers migrant juveniles driven winter storms snowmelt. The appeared which raises questions about current limited understanding study shows how provide valuable insights limiting factors must be addressed succeed.

Language: Английский

Citations

6