Behavioral thermoregulation by adult Chinook salmon (Oncorhynchus tshawytscha) in estuary and freshwater habitats prior to spawning

Goetz, Frederick A.; Quinn, Thomas P.

doi:10.7755/fb.117.3.12

Cited by 5 publications

(3 citation statements)

References 26 publications

(68 reference statements)

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“…Cold-water species that can tolerate a salinity range and are mobile may be able to survive in thermal niches in colder estuary zones as is common in rivers [13]. However, changes in dissolved oxygen and salinity across stratified zones may pose challenges to such thermoregulation, and this remains a source of ongoing research [14]. Complex density-dependent stratification and associated spatiotemporal thermal complexity for coastal water bodies may be beneficial for ecosystems, but it is challenging to model.…”

Section: Density-dependent Stratification and Dynamicsmentioning

confidence: 99%

Stuck in the middle: thermal regimes of coastal lagoons and estuaries in a warming world

Kurylyk

Smith

2023

Environ. Res. Lett.

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Section: Density-dependent Stratification and Dynamicsmentioning

confidence: 99%

Stuck in the middle: thermal regimes of coastal lagoons and estuaries in a warming world

Kurylyk

Smith

2023

Environ. Res. Lett.

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“…9-11°C, interpreted as 18-30 m depth (Newell & Quinn, 2005), whereas Chinook salmon occupied mean temperatures ca. 16-18°C, with a range in the lake from 9-22°C (Goetz & Quinn, 2019). Consequently, projections of possible climate change effects in fishes in lakes need to carefully consider such variation in thermal preference and tolerance among as well as within species.…”

Section: F I G U R Ementioning

confidence: 99%

Seasonal shifts in diel vertical migrations by lake‐dwelling coastal cutthroat trout, Oncorhynchus clarkii clarkii, reflect thermal regimes and prey distributions

Thomas

Beauchamp

Clark

et al. 2023

Ecology of Freshwater Fish

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Lakes provide important habitat for salmonids that may use them as a primary feeding area between periods of reproduction. The seasonal changes in vertical thermal structure in lakes can affect the distribution of salmonids on seasonal and diel time scales as they search for, consume, and digest prey that also exploits the water column's distribution of food, temperature and light. Our goal was to analyse the vertical distribution of wild, native coastal cutthroat trout (Oncorhynchus clarkii clarkii) in Lake Washington on daily and seasonal time scales. This lake is stratified in the summer and isothermal in winter, allowing us to compare vertical movements between periods with and without thermal structure in water 50 m deep. We predicted that trout would be deeper in the water column during stratified months and shallower during isothermal months, and shallower at night than in the day. Overall, the trout showed these patterns in the depths and temperatures they occupied, tending to be within or below the thermocline in the summer but not in the coolest water available, and closer to the surface when the lake was isothermal. The trout were also closer to the surface at night and deeper during the day. The vertical range of these diel movements shifted with the seasons–deepest in October, as the thermocline deepened and weakened, and shallowest in January when the lake was isothermal. These seasonal and diel vertical distribution patterns by the trout optimise metabolism for growth, and facilitate feeding on planktivorous fishes that also show seasonal and diel vertical distribution changes.

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“…Holding in thermal refuges can increase risks from disease [277] and capture in fisheries [278]. Population differences in the use of thermal refuges during migration are thought to reflect the environmental conditions encountered, namely the relative availability of cool habitat, as well as the amount of time available before spawning, or the urgency of reaching upriver sites [279][280][281][282][283][284][285][286]. For example, sumer-run steelhead make extensive use of cool habitats that are beyond the migration route to spawning areas ("overshoot") because they do not need to spawn until the following spring [282,287].…”

Section: Responsesmentioning

confidence: 99%

A Comprehensive Review of the Impacts of Climate Change on Salmon: Strengths and Weaknesses of the Literature by Life Stage

Crozier

Siegel

2023

Fishes

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As we confront novel environmental challenges, a full understanding of the physical and biological processes that govern species responses to climate change will help maintain biodiversity and support conservation measures that are more robust to irreducible uncertainty. However, climate impacts are so complex, and the literature on salmon and trout is so vast that researchers and decision makers scramble to make sense of it all. Therefore, we conducted a systematic literature review of climate impacts on salmon and anadromous trout as a resource for stakeholders, managers, and researchers. We reviewed studies published from 2010 to 2021 that address climate impacts on these fish and organized them in a database of 1169 physical and 1853 biological papers. Papers are labeled with keywords across eight categories related to subject matter and study methods. We compared the literature by biological process and life stage and used these comparisons to assess strengths and weaknesses. We then summarized expected phenotypic and genetic responses and management actions by life stage. Overall, we found the largest research gaps related to species interactions, behavioral responses, and effects that carry over across life stages. With this collection of the literature, we can better apply scarce conservation resources, fill knowledge gaps, and make informed decisions that do not ignore uncertainty.

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Behavioral thermoregulation by adult Chinook salmon (Oncorhynchus tshawytscha) in estuary and freshwater habitats prior to spawning

Cited by 5 publications

References 26 publications

Stuck in the middle: thermal regimes of coastal lagoons and estuaries in a warming world

Stuck in the middle: thermal regimes of coastal lagoons and estuaries in a warming world

Seasonal shifts in diel vertical migrations by lake‐dwelling coastal cutthroat trout, Oncorhynchus clarkii clarkii, reflect thermal regimes and prey distributions

A Comprehensive Review of the Impacts of Climate Change on Salmon: Strengths and Weaknesses of the Literature by Life Stage

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