Summer Production of Coho Salmon Stocked in Mount St. Helens Streams 3–6 Years after the 1980 Eruption

Bisson, Peter A.; Nielsen, Jennifer L.; Ward, James W.

doi:10.1577/1548-8659(1988)117<0322:spocss>2.3.co;2

Cited by 32 publications

(15 citation statements)

References 19 publications

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“…For example, experimental logging of the surrounding forests increased the Carnation Creek (British Columbia, Canada) peak summer temperatures from ∼10 to ∼15°C, and in winter from ∼5 to ∼7°C, which resulted in earlier coho salmon emergence, a longer growing season and a 47% increase in smolt numbers (Holtby, 1988). Similarly, following a volcanic eruption, summer temperatures in three Washington (USA) streams typically exceeded 20°C (and even reached 29.5°C in some areas), yet coho salmon growth was similar to other watersheds at cooler temperatures considered optimal for growth (Bisson et al, 1988).…”

Section: Juvenile Coho Salmonmentioning

confidence: 98%

“…4B). By focusing on water temperatures from 1 May through 31 October, we not only captured the testing dates used by Casselman et al (2012) but encompassed the period of summer growth (Bisson et al, 1988;Quinn and Peterson, 1996). By doing so, we compared the thermal performance of AS against relevant river temperature records, but did not attempt to assess ontogenic changes in AS because the juveniles and adults assessed in the present study were from genetically distinct populations (Beacham et al, 2011).…”

Section: Comparison With Juvenile Coho Salmonmentioning

confidence: 99%

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Aerobic scope increases throughout an ecologically relevant temperature range in coho salmon

Raby

Casselman

Cooke

et al. 2016

Journal of Experimental Biology

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Aerobic scope (AS) has been proposed as a functional measurement that can be used to make predictions about the thermal niche of aquatic ectotherms and hence potential fitness outcomes under future warming scenarios. Some salmonid species and populations, for example, have been reported to exhibit different thermal profiles for their AS curves such that AS peaks around the modal river temperature encountered during the upriver spawning migration, suggesting species-and population-level adaptations to river temperature regimes. Interestingly, some other salmonid species and populations have been reported to exhibit AS curves that maintain an upwards trajectory throughout the ecologically relevant temperature range rather than peaking at a modal temperature. To shed further light on this apparent dichotomy, we used adult coho salmon (Oncorhynchus kisutch) to test the prediction that peak AS coincides with populationspecific, historically experienced river temperatures. We assessed AS at 10 and 15°C, which represent a typical river migration temperature and the upper limit of the historically experienced temperature range, respectively. We also examined published data on AS in juvenile coho salmon in relation to new temperature data measured from their freshwater rearing environments. In both cases, AS was either maintained or increased modestly throughout the range of ecologically relevant temperatures. In light of existing evidence and the new data presented here, we suggest that when attempting to understand thermal optima for Pacific salmon and other species across life stages, AS is a useful metric of oxygen transport capacity but other thermally sensitive physiological indices of performance and fitness should be considered in concert.

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Section: Juvenile Coho Salmonmentioning

confidence: 98%

Section: Comparison With Juvenile Coho Salmonmentioning

confidence: 99%

Aerobic scope increases throughout an ecologically relevant temperature range in coho salmon

Raby

Casselman

Cooke

et al. 2016

Journal of Experimental Biology

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show abstract

“…following the eruption of Mt St Helens in western North America in 1980, catchments draining the mountain were seriously depopulated for several years (Martin et al . 1986); presumably the straying of otherwise homing species would have achieved re‐population by salmonids (and survival of the stock’s distinctive genetic composition/adaptation) once river conditions recovered, had this not been supplemented by hatchery stocking (Bisson et al . 1988).…”

Section: Homingmentioning

confidence: 99%

Anadromy and homing: two life‐history traits with adaptive synergies in salmonid fishes?

McDowall¹

2001

Fish and Fisheries

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Anadromy and homing are two traits found widely amongst teleost fishes. They co‐occur in salmonid fishes, and probably also in other fish families. Anadromy provides fish with the opportunity for more rapid growth, larger size, and higher fecundity through the exploitation of rich food resources and favourable growing temperatures in the sea, but may result in higher predation mortalities and has the tendency to disperse stocks very widely. Homing fosters adaptation of stocks to favourable local spawning conditions, but the dispersive effects of anadromy, in the absence of homing, may tend to break down such local adaptation. A low percentage of straying in species that home may have long‐term evolutionary advantages. This paper explores the question of whether homing may be a preadaptation for successful evolution of anadromy, or whether the two attributes have coevolved.

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“…sources from greater autotrophic production in open-canopied streams. As a consequence of removing overhead vegetation, this type of disturbance may increase autochthonous contribution to fish, and open-canopied streams often support higher biomass and densities of fish (Murphy et al 1986;Bisson et al 1988;Hawkins et al 1983). …”

Section: Variation In Autochthonous Contributions To Fishmentioning

confidence: 99%

Effects of disturbance on contribution of energy sources to growth of juvenile chinook salmon (Oncorhynchus tshawytscha) in boreal streams

Perry¹,

Bradford²,

Grout³

2003

Can. J. Fish. Aquat. Sci.

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We used stable isotopes of carbon in a growth-dependent tissue-turnover model to quantify the relative contribution of autochthonous and terrestrial energy sources to juvenile chinook salmon (Oncorhynchus tshawytscha) in five small boreal streams tributary to the upper Yukon River. We used a tissue-turnover model because fish did not grow enough to come into isotopic equilibrium with their diet. In two streams, autochthonous energy sources contributed 23 and 41% to the growth of juvenile salmon. In the other three, fish growth was largely due to terrestrial (i.e., allochthonous) energy sources. This low contribution of autochthonous energy appeared to be related to stream-specific disturbances: a recent forest fire impacted two of the streams and the third was affected by a large midsummer spate during the study. These disturbances reduced the relative abundance of herbivorous macroinvertebrates, the contribution of autochthonous material to other invertebrates, and ultimately, the energy flow between stream algae and fish. Our findings suggest that disturbances to streams can be an important mechanism affecting transfer of primary energy sources to higher trophic levels.Résumé : L'utilisation d'isotopes stables de carbone dans un modèle de remplacement de tissus relié à la croissance a permis de quantifier les contributions relatives des sources d'énergie autochtones et terrestres chez les jeunes saumons quinnat (Oncorhynchus tshawytscha) dans cinq petits ruisseaux de la région boréale, tributaires du cours supérieur du fleuve Yukon. Nous avons utilisé un modèle de remplacement de tissus, car les poissons ne croissent pas assez pour atteindre un équilibre isotopique avec leur régime alimentaire. Dans deux des ruisseaux, les sources d'énergie autochtones contribuent à 23 et 41 % de la croissance des jeunes poissons. Dans les trois autres, la croissance des poissons est due en grande partie aux sources terrestres (i.e., allochtones) d'énergie. Cette faible contribution de l'énergie autochtone semble reliée à des perturbations spé-cifiques au ruisseau : deux des ruisseaux ont été récemment affectés par un incendie de forêt et le troisième a été perturbé par une inondation de mi-été durant notre étude. Ces perturbations ont réduit l'abondance relative des macroinvertébrés herbivores, la contribution de la matière autochtone aux autres invertébrés et, en fin de compte, le flux d'énergie entre les algues et les poissons dans les cours d'eau. Nos résultats laissent croire que les perturbations des cours d'eau peuvent être des mé-canismes importants qui affectent les transferts des sources primaires d'énergie aux échelons trophiques supérieurs.[Traduit par la Rédaction] Perry et al. 400

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Summer Production of Coho Salmon Stocked in Mount St. Helens Streams 3–6 Years after the 1980 Eruption

Cited by 32 publications

References 19 publications

Aerobic scope increases throughout an ecologically relevant temperature range in coho salmon

Aerobic scope increases throughout an ecologically relevant temperature range in coho salmon

Anadromy and homing: two life‐history traits with adaptive synergies in salmonid fishes?

Effects of disturbance on contribution of energy sources to growth of juvenile chinook salmon (Oncorhynchus tshawytscha) in boreal streams

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