EFFECTS OF CLIMATE CHANGE AND RECENT WILDFIRES ON STREAM TEMPERATURE AND THERMAL HABITAT FOR TWO SALMONIDS IN A MOUNTAIN RIVER NETWORK

2009 ◽  
pp. 100319061507001
Author(s):  
Daniel Isaak ◽  
Charles Luce ◽  
Bruce Rieman ◽  
David Nagel ◽  
Erin Peterson ◽  
...  
Keyword(s):  
Climate Change ◽  
Stream Temperature ◽  
River Network ◽  
Mountain River ◽  
Thermal Habitat

scholarly journals Effects of climate change and wildfire on stream temperatures and salmonid thermal habitat in a mountain river network

2010 ◽  
Vol 20 (5) ◽  
pp. 1350-1371 ◽  
Author(s):  
Daniel J. Isaak ◽  
Charles H. Luce ◽  
Bruce E. Rieman ◽  
David E. Nagel ◽  
Erin E. Peterson ◽  
...  
Keyword(s):  
Climate Change ◽  
River Network ◽  
Mountain River ◽  
Thermal Habitat

scholarly journals Adaptation Effort and Performance of Water Management Strategies to Face Climate Change Impacts in Six Representative Basins of Southern Europe

Water ◽  
2019 ◽  
Vol 11 (5) ◽  
pp. 1078 ◽  
Author(s):  
Alvaro Sordo-Ward ◽  
Alfredo Granados ◽  
Ana Iglesias ◽  
Luis Garrote ◽  
María Bejarano
Keyword(s):  
Climate Change ◽  
Water Use ◽  
Water Availability ◽  
Water Allocation ◽  
Methodological Approach ◽  
River Network ◽  
Climate Change Scenarios ◽  
Southern Europe ◽  
Management Measures ◽  
Irrigation Water Use

We evaluated different management alternatives to enhance potential water availability for agriculture under climate change scenarios. The management goal involved maximizing potential water availability, understood as the maximum volume of water supplied at a certain point of the river network that satisfies a defined demand, and taking into account specified reliability requirements. We focused on potential water availability for agriculture and assumed two types of demands: urban supply and irrigation. If potential water availability was not enough to satisfy all irrigation demands, management measures were applied aiming at achieving a compromise solution between resources and demands. The methodological approach consisted of estimation and comparison of runoff for current and future period under climate change effects, calculation of water availability changes due to changes in runoff, and evaluation of the adaptation choices that can modify the distribution of water availability, under climate change. Adaptation choices include modifying water allocation to agriculture, increasing the reservoir storage capacity, improving the efficiency of urban water use, and modifying water allocation to environmental flows. These management measures were evaluated at the desired points of the river network by applying the Water Availability and Adaptation Policy Analysis (WAAPA) model. We simulated the behavior of a set of reservoirs that supply water for a set of prioritized demands, complying with specified ecological flows and accounting for evaporation losses. We applied the methodology in six representative basins of southern Europe: Duero-Douro, Ebro, Guadalquivir, Po, Maritsa-Evros, and Struma-Strymon. While in some basins, such as the Ebro or Struma-Strymon, measures can significantly increase water availability and compensate for a fraction of water scarcity due to climate change, in other basins, like the Guadalquivir, water availability cannot be enhanced by applying the management measures analyzed, and irrigation water use will have to be reduced.

scholarly journals A Global Approach to Assess the Potential Impact of Climate Change on Stream Water Temperatures and Related In-Stream First-Order Decay Rates

2012 ◽  
Vol 13 (3) ◽  
pp. 1052-1065 ◽  
Author(s):  
Manuel Punzet ◽  
Frank Voß ◽  
Anja Voß ◽  
Ellen Kynast ◽  
Ilona Bärlund
Keyword(s):  
Climate Change ◽  
Water Quality ◽  
Regression Model ◽  
Stream Water ◽  
Stream Temperature ◽  
Decay Rates ◽  
Regression Equation ◽  
Impact Of Climate Change ◽  
Global Regression ◽  
Warm Temperate

Abstract Stream water temperature is an important factor used in water quality modeling. To estimate monthly stream temperature on a global scale, a simple nonlinear regression model was developed. It was applied to stream temperatures recorded over a 36-yr period (1965–2001) at 1659 globally distributed gauging stations. Representative monthly air temperatures were obtained from the nearest grid cell included in the new global meteorological forcing dataset—the Water and Global Change (WATCH) Forcing Data. The regression model reproduced monthly stream temperatures with an efficiency of fit of 0.87. In addition, the regression model was applied for different climate zones (polar, snow, warm temperate arid, and equatorial climates) based on the Köppen–Geiger climate classification. For snow, warm temperate, and arid climates the efficiency of fit was larger than 0.82 including more than 1504 stations (90% of all records used). Analyses of heat-storage effects (seasonal hysteresis) did not show noticeable differences between the warming/cooling and global regression curves, respectively. The maximum difference between both limbs of the hysteresis curves was 1.6°C and thus neglected in the further analysis of the study. For validation purposes time series of stream temperatures for five individual river basins were computed applying the global regression equation. The accuracy of the global regression equation could be confirmed. About 77% of the predicted values differed by 3°C or less from measured stream temperatures. To examine the impact of climate change on stream water temperatures, gridded global monthly stream temperatures for the climate normal period (1961–90) were calculated as well as stream temperatures for the A2 and B1 climate change emission scenarios for the 2050s (2041–70). On average, there will be an increase of 1°–4°C in monthly stream temperature under the two climate scenarios. It was also found that in the months December, January, and February a noticeable warming predominantly occurs along the equatorial zone, while during the months June, July, and August large-scale or large increases can be observed in the northern and southern temperate zones. Consequently, projections of decay rates show a similar seasonal and spatial pattern as the corresponding stream temperatures. A regional increase up to ~25% could be observed. Thus, to ensure sufficient water quality for human purposes, but also for freshwater ecosystems, sustainable management strategies are required.

scholarly journals Modelling the impacts of climate change on thermal habitat suitability for shallow-water marine fish at a global scale

PLoS ONE ◽  
2021 ◽  
Vol 16 (10) ◽  
pp. e0258184
Author(s):  
Edward Lavender ◽  
Clive J. Fox ◽  
Michael T. Burrows
Keyword(s):  
Climate Change ◽  
Shallow Water ◽  
Habitat Suitability ◽  
Spatial Scales ◽  
Species Conservation ◽  
Global Scale ◽  
Response Curves ◽  
Thermal Habitat ◽  
Western Africa ◽  
The Tropics

Understanding and predicting the response of marine communities to climate change at large spatial scales, and distilling this information for policymakers, are prerequisites for ecosystem-based management. Changes in thermal habitat suitability across species’ distributions are especially concerning because of their implications for abundance, affecting species’ conservation, trophic interactions and fisheries. However, most predictive studies of the effects of climate change have tended to be sub-global in scale and focused on shifts in species’ range edges or commercially exploited species. Here, we develop a widely applicable methodology based on climate response curves to predict global-scale changes in thermal habitat suitability. We apply the approach across the distributions of 2,293 shallow-water fish species under Representative Concentration Pathways 4.5 and 8.5 by 2050–2100. We find a clear pattern of predicted declines in thermal habitat suitability in the tropics versus general increases at higher latitudes. The Indo-Pacific, the Caribbean and western Africa emerge as the areas of most concern, where high species richness and the strongest declines in thermal habitat suitability coincide. This reflects a pattern of consistently narrow thermal ranges, with most species in these regions already exposed to temperatures above inferred thermal optima. In contrast, in temperate regions, such as northern Europe, where most species live below thermal optima and thermal ranges are wider, positive changes in thermal habitat suitability suggest that these areas are likely to emerge as the greatest beneficiaries of climate change, despite strong predicted temperature increases.

scholarly journals A model for evaluating stream temperature response to climate change in Wisconsin

2015 ◽  
Author(s):  
Jana S. Stewart ◽  
Stephen M. Westenbroek ◽  
Matthew G. Mitro ◽  
John D. Lyons ◽  
Leah E. Kammel ◽  
...  
Keyword(s):  
Climate Change ◽  
Temperature Response ◽  
Stream Temperature
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