Thermal biology and bioenergetics of different upriver migration strategies in a stock of summer-run Chinook salmon

Hasler, Caleb T.; Cooke, Steven J.; Hinch, Scott G.; Guimond, Esther; Donaldson, Michael R.; Mossop, Brent; Patterson, David A.

doi:10.1016/j.jtherbio.2011.02.003

Cited by 25 publications

(28 citation statements)

References 40 publications

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“…For example, mean daily salmon temperatures may have been lower than mean daily Willamette River temperatures if salmon made fine-scale thermal habitat selections like those reported by Donaldson et al (2009) andHasler et al (2012). Evaluating this type of behavioral thermoregulation requires collection of both river temperature data and salmon location data at considerably finer spatial scales than was possible in this study.…”

Section: Behavioral Thermoregulationmentioning

confidence: 83%

“…In this study, we reconstructed Willamette basin Chinook salmon temperature histories with radio transmitters and internal temperature loggers, a biotelemetry combination that has been used to evaluate several thermally at-risk salmon populations (e.g., Donaldson et al, 2009;Hasler et al, 2012;Strange, 2012;Caudill et al, 2013). Our first objective was to identify the location and duration of exposure to potentially stressful temperatures, defined as Z18 or Z 20°C, from values in McCullough et al (2001) and Richter and Kolmes (2005).…”

Section: Introductionmentioning

confidence: 99%

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Thermal exposure of adult Chinook salmon in the Willamette River basin

Keefer

Clabough

Jepson

et al. 2015

Journal of Thermal Biology

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Section: Behavioral Thermoregulationmentioning

confidence: 83%

Section: Introductionmentioning

confidence: 99%

Thermal exposure of adult Chinook salmon in the Willamette River basin

Keefer

Clabough

Jepson

et al. 2015

Journal of Thermal Biology

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“…; Hasler et al. ). Our study illustrates how damming can limit individuals to advance or delay their migration timing in response to environmental changes (e.g., climate change, early spring, altered flow patterns due to changed river banks).…”

Section: Discussionmentioning

confidence: 98%

Mismatch between fishway operation and timing of fish movements: a risk for cascading effects in partial migration systems

Leeuwen

Museth

Sandlund

et al. 2016

Ecology and Evolution

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Habitat fragmentation is a growing problem worldwide. Particularly in river systems, numerous dams and weirs hamper the movement of a wide variety of species. With the aim to preserve connectivity for fish, many barriers in river systems are equipped with fishways (also called fish passages or fish ladders). However, few fishways provide full connectivity. Here we hypothesized that restricted seasonal opening times of fishways can importantly reduce their effectiveness by interfering with the timing of fish migration, for both spring‐ and autumn‐spawning species. We empirically tested our hypothesis, and discuss the possible eco‐evolutionary consequences of affected migration timing. We analyzed movements of two salmonid fishes, spring‐spawning European grayling (Thymallus thymallus) and autumn‐spawning brown trout (Salmo trutta), in Norway's two largest river systems. We compared their timing of upstream passage through four fishways collected over 28 years with the timing of fish movements in unfragmented river sections as monitored by radiotelemetry. Confirming our hypothesis, late opening of fishways delayed the migration of European grayling in spring, and early closure of fishways blocked migration for brown trout on their way to spawning locations during late autumn. We show in a theoretical framework how restricted opening times of fishways can induce shifts from migratory to resident behavior in potamodromous partial migration systems, and propose that this can induce density‐dependent effects among fish accumulating in lower regions of rivers. Hence, fragmentation may not only directly affect the migratory individuals in the population, but may also have effects that cascade downstream and alter circumstances for resident fish. Fishway functionality is inadequate if there is a mismatch between natural fish movements and fishway opening times in the same river system, with ecological and possibly evolutionary consequences for fish populations.

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“…; Hasler et al. ). To demonstrate how the combination of logger data and river temperatures can be applied to management questions, we developed a predictive model to estimate total thermal exposure for ~19,000 additional adult salmon and steelhead with passive integrated transponder (PIT) tag detection histories at lower Snake River dams.…”

Section: Introductionmentioning

confidence: 98%

Estimating thermal exposure of adult summer steelhead and fall Chinook salmon migrating in a warm impounded river

Keefer

Caudill

2015

Ecology of Freshwater Fish

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Rising river temperatures in western North America have increased the vulnerability of many Pacific salmon (Oncorhynchus spp.) populations to lethal and sublethal risks. There is a growing need to predict and manage such risks, especially for populations whose life history or geography increases the likelihood of warmwater exposure. We estimated thermal exposure of adult summer steelhead (O. mykiss) and fall-run Chinook salmon (O. tshawytscha) as they migrated through a warm (often > 20°C), 157-km reach of the impounded Snake River, Washington. Archival temperature loggers and radiotelemetry were used to reconstruct thermal histories for 50 steelhead and 21 salmon. Encountered temperature maxima were mostly inside dam fishways and ranged from 15.8 to 24.0°C (mean = 19.6°C) for steelhead and from 18.0 to 21.6°C (19.9°C) for salmon. Behavioural thermoregulation was evident for~50% of steelhead and~30% of salmon in one of three reservoirs. Degree days (DDs) calculated from archival tags ranged from 74 to 973 DDs (median = 130) for steelhead and from 56 to 220 DDs (133) for salmon. Models using river temperature data and fish migration times accurately estimated total DDs for both species except some steelhead with extended thermoregulation. In a predictive application, we estimated exposure for 10,104 steelhead and 9071 Chinook salmon with passive integrated transponder-tag detections at dams and found considerable DD variability across individuals, species and years. This estimation method, combined with baseline thermal surveys and existing monitoring infrastructure, can help to address long-standing questions about how warm-water exposure affects Snake River salmon and steelhead phenology, bioenergetics, physiology, survival and reproductive success.

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Thermal biology and bioenergetics of different upriver migration strategies in a stock of summer-run Chinook salmon

Cited by 25 publications

References 40 publications

Thermal exposure of adult Chinook salmon in the Willamette River basin

Thermal exposure of adult Chinook salmon in the Willamette River basin

Mismatch between fishway operation and timing of fish movements: a risk for cascading effects in partial migration systems

Estimating thermal exposure of adult summer steelhead and fall Chinook salmon migrating in a warm impounded river

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