DOI: 10.7489/12202-7
title: Scotland River Temperature Monitoring Network Summary Data

description: This dataset and associated Shiny App was developed to allow users to visualise quality controlled data collected under the Scotland River Temperature Monitoring Network (SRTMN; https://www2.gov.scot/Topics/marine/Salmon-Trout-Coarse/Freshwater/Monitoring/temperature) and other collaborative projects, at either national or catchment scales. A range of temperature summary metrics have been generated for each of the sites, from daily maximum, mean or minimum river temperatures depending on the metrics selected. Metrics are only generated where data is available for >95% of the time period. Users should familarise themselves with the 'Metrics' and 'How to use data' pages of the associated Shiny App for details on how each of the metrics are calculated and how they should be interpreted.  

SRTMN sites are not a random sample of locations across Scottish rivers. Instead they were strategically chosen to cover a wide environmental and geographic range to allow statistical models to be developed. This means that sites often have unusual combinations of environmental characteristics (e.g. high altitude and short distance to coast) that make them useful in this context, however, they are not representative of Scottish rivers more generally. Consequently, although maps and boxplots of national and catchment summary metrics are provided, care should be taken in making broader inferences. To extrapolate from SRTMN sites to Scotland's rivers more generally requires the use of complex spatio-temporal river temperature models which can make predictions across the full river network. 

Information on network design can be found here: https://iwaponline.com/hr/article/47/3/569-590/1326

Spatial predictions of river temperature can be found here: https://www2.gov.scot/Topics/marine/Salmon-Trout-Coarse/Freshwater/Monitoring/temperature/references

Citation: 
Jackson, F.L. Proudlock, P. Malcolm, I.A (2019) Scotland River Temperature Monitoring Network Summary Data. DOI: 10.7489/12202-1

Collaborating Organisations 
The following collaborating organisations are thanked for their valuable efforts in facilitating or delivering data collection, without whom this work would not be possible: River Dee Trust, Tweed Foundation, Caithness District Salmon Fishery Board, River Brora District Salmon Fishery Board, Kyle of Sutherland Fisheries Trust, Argyll Fisheries Trust, Ayrshire Rivers Trust, Galloway Fisheries Trust, Spey Foundation
description: This dataset and associated Shiny App visualises a range of summary metrics of river temperature, generated from quality controlled data collected under the Scotland River Temperature Monitoring Network (SRTMN) and other collaborative projects. These can be mapped at either national or catchment scales. A range of temperature summary metrics have been generated for each of the sites, from daily maximum, mean or minimum river temperatures depending on the metrics selected. Metrics are only generated where data is available for >95% of the time period. 

Further details on SRTMN network design, quality control and calibration procedures and additional outputs and tools can all be found on the SRTMN webpages: https://www2.gov.scot/Topics/marine/Salmon-Trout-Coarse/Freshwater/Monitoring/temperature

The below metrics have been generated, further details and full references can be found on the metrics page of the associated Shiny App.  

Abbreviated Metric - Method                       
Maximum - Maximum observed river temperature 
Mean - Mean observed river temperature 
Minimum - Minimum observed river temperature 
Mean Maximum - Mean of the observed daily maximum river temperatures 
Mean Minimum - Mean Minimum |Mean of the observed daily minimum river temperatures 
Optimal salmon growth - Number of days where mean daily river temperature is above 16 degrees (optimal growth of juvenile  salmon given unlimited food resources) 
Max salmon growth - Number of days where observed mean daily temperatures exceed 22·5 degrees (maximum temperature for growth of juvenile salmon given unlimited food resources) 
Min salmon growth - Number of days where observed mean daily temperature is below 6 degrees (minimum temperature for growth of juvenile salmon given unlimited food resources) 
Optimal trout growth - Number of days where mean daily temperature is above 13.5 degrees (optimal growth of juvenile trout given unlimited food resources)  
Max trout growth - Number of days where mean daily temperature is above 19.5 degrees (maximum temperature for juvenile growth of trout given unlimited food resources) 
Min trout growth - Number of days where observed mean daily temperature is below 4 degrees (minimum temperature for growth of juvenile trout given unlimited food resources) 
Salmon stress - Number of days where observed maximum daily temperature is above 23 degrees (where juvenile salmon begin to show behaviourial changes, such as seaking thermal refugia) 
Salmon catch and release risk - Days where minimum temperature exceeds 20 degrees 
Salmon lethal - Number of days where observed daily maximum temperature is above ca.31 degrees 
Trout lethal - Number of days where observed daily maximum temperature is above ca.30 degrees