Brown trout thermal niche and climate change: expected changes in the distribution of cold‐water fish in central Spain

Saez, Jose Maria Santiago; Jalón, Diego García de; Alonso, Carlos; Solana, Joaquín; Ribalaygua, Jaime; Pórtoles, Javier; Monjo, Robert

doi:10.1002/eco.1653

Cited by 49 publications

(74 citation statements)

References 82 publications

(139 reference statements)

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“…Mean maximum summer temperature responded most strongly to tree cover, with a greater percentage cover required to achieve a given stream water temperature regime in the warmer summer of 2013. Model 19 predicted that approximately 42% tree cover would have been required in this year to maintain water temperatures below the reported upper threshold for the realized thermal niche of brown trout (Santiago et al, ), and approximately 23% cover required to maintain temperatures below the upper limit for brown trout growth (Elliott et al, ; Figure ).…”

Section: Resultsmentioning

confidence: 99%

River reaches with impaired riparian tree cover and channel morphology have reduced thermal resilience

2017

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This study evaluated the effects of riparian tree cover and channel morphology on the thermal regimes of 3 adjacent rivers in different years. Riparian tree cover was found to exert a strong modifying influence on stream temperature, with reduced mean maximum summer temperature at sites having greater tree cover. The effect of tree cover changed among years, such that greater cover was required to maintain a given water temperature regime in the warmer summer of 2013 than in 2014 or 2015. Water temperature was also related to mean depth in some years; shallower sites, typically associated with artificial channel widening, showed greater temperature extremes. These results suggest that the thermal resilience of modified streams can be improved by restoration of riparian tree cover and restored channel morphology. This finding is relevant to climate change proofing of temperate river channels, where cold‐water fauna are important elements of the biotic community.

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Section: Resultsmentioning

confidence: 99%

River reaches with impaired riparian tree cover and channel morphology have reduced thermal resilience

2017

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“…Furthermore, recent studies also have discussed water temperature change and its effect due to climate change on the aquatic environment such as ecosystem productivity [31,32] and biodiversity [24,33,34]. In particular, cold water species are studied more extensively because several climate change scenarios indicate that some rivers may approach their upper tolerance limit [35][36][37]. For instance, Johnson and Almlöf [34] Johnson and Almlöf [34] discussed the potential impact of temperature increases on the brook trout population in one of Lake Superior's tributary and Brown [24] shows the change in the exceedance of upper water temperature criteria, based on the climate change scenarios.…”

Section: Introductionmentioning

confidence: 99%

Summer Season Water Temperature Modeling under the Climate Change: Case Study for Fourchue River, Quebec, Canada

Kwak¹,

St‐Hilaire

Chebana

et al. 2017

Water

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Abstract:It is accepted that human-induced climate change is unavoidable and it will have effects on physical, chemical, and biological properties of aquatic habitats. This will be especially important for cold water fishes such as trout. The objective of this study is to simulate water temperature for future periods under the climate change situations. Future water temperature in the Fourchue River (St-Alexandre-de-Kamouraska, QC, Canada) were simulated by the CEQUEAU hydrological and water temperature model, using meteorological inputs from the Coupled Model Intercomparison Project Phase 5 (CMIP5) Global Circulation Models (GCMs) with Representative Concentration Pathway (RCP) 2.6, 4.5 and 8.5 climate change scenarios. The result of the study indicated that water temperature in June will increase 0.2-0.7 • C and that in September, median water temperature could decrease by 0.2-1.1 • C. The rise in summer water temperature may be favorable to brook trout (Salvelinus fontinalis) growth, but several days over the Upper Incipient Lethal Temperature (UILT) are also likely to occur. Therefore, flow regulation procedures, including cold water releases from the Morin dam may have to be considered for the Fourchue River.

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“…A previous modification (Term 1 in Eq. 1; Santiago et al, 2016) served to improve the behaviour of the former model, permitting it to be used for daily inputs. In this study, the effect of the instream flow (Q) effect is incorporated.…”

Section: Stream Temperature Modellingmentioning

confidence: 99%

“…Comte et al, 2013;RuizNavarro et al, 2016). These changes may have an especially strong effect on cold-water fish, which have been shown to be very sensitive to climate warming (Williams et al, 2015;Santiago et al, 2016). For example, among salmonids, DeWeber and Wagner (2015) found stream temperature to be the most important determinant of the probability of occurrence of brook trout, Salvelinus fontinalis (Mitchill, 1814).…”

Section: Introductionmentioning

confidence: 99%

Waning habitats due to climate change: the effects of changes in streamflow and temperature at the rear edge of the distribution of a cold-water fish

Saez

Muñoz‐Mas²,

Solana‐Gutiérrez³

et al. 2017

Hydrol. Earth Syst. Sci.

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Abstract. Climate changes affect aquatic ecosystems by altering temperatures and precipitation patterns, and the rear edges of the distributions of cold-water species are especially sensitive to these effects. The main goal of this study was to predict in detail how changes in air temperature and precipitation will affect streamflow, the thermal habitat of a cold-water fish (the brown trout, Salmo trutta), and the synergistic relationships among these variables at the rear edge of the natural distribution of brown trout. Thirty-one sites in 14 mountain rivers and streams were studied in central Spain. Models of streamflow were built for several of these sites using M5 model trees, and a non-linear regression method was used to estimate stream temperatures. Nine global climate models simulations for Representative Concentration Pathways RCP4.5 and RCP8.5 scenarios were downscaled to the local level. Significant reductions in streamflow were predicted to occur in all of the basins (max. −49 %) by the year 2099, and seasonal differences were noted between the basins. The stream temperature models showed relationships between the model parameters, geology and hydrologic responses. Temperature was sensitive to streamflow in one set of streams, and summer reductions in streamflow contributed to additional stream temperature increases (max. 3.6 • C), although the sites that are most dependent on deep aquifers will likely resist warming to a greater degree. The predicted increases in water temperatures were as high as 4.0 • C. Temperature and streamflow changes will cause a shift in the rear edge of the distribution of this species. However, geology will affect the extent of this shift. Approaches like the one used herein have proven to be useful in planning the prevention and mitigation of the negative effects of climate change by differentiating areas based on the risk level and viability of fish populations.

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Brown trout thermal niche and climate change: expected changes in the distribution of cold‐water fish in central Spain

Cited by 49 publications

References 82 publications

River reaches with impaired riparian tree cover and channel morphology have reduced thermal resilience

River reaches with impaired riparian tree cover and channel morphology have reduced thermal resilience

Summer Season Water Temperature Modeling under the Climate Change: Case Study for Fourchue River, Quebec, Canada

Waning habitats due to climate change: the effects of changes in streamflow and temperature at the rear edge of the distribution of a cold-water fish

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