Scotland River Temperature Monitoring Network (SRTMN) - Tree planting prioritisation for shading rivers
River temperature is an important control on the health of fish populations. Under climate change it is expected that river temperature will rise with negative consequences for fish populations. Management of riparian woodland is proven to protect cold water habitats. However, the creation of new riparian woodland can be costly and logistically challenging. It is therefore important that woodland creation is prioritised to areas where (1) river temperatures are hottest (2) most sensitive to climate change (see SRTMN Predictions: http://marine.gov.scot/information/scotland-river-temperature-monitoring-network-srtmn-predictions-river-temperature-and) and (3) where riparian woodland can be most effective in reducing maximum summer river temperatures. Together these tools can be used to prioritise riparian tree planting in Scotland to protect freshwater fish and fisheries from the effects of climate change. These layers identify where river temperatures can be reduced through riparian shading in Scotland (3 above). Details of modelling work that produced these layers can be found in the associated peer reviewed manuscript: Jackson et al (2021) A deterministic river temperature model to prioritise management of riparian woodlands to reduce summer maximum river temperatures. The outputs of this work are illustrated as three layers on Marine Scotland Maps NMPi: 1. Prioritisation where both banks can be planted 2. Prioritisation where only north banks can be planted 3. Prioritisation where only south banks can be planted The rankings and colour scales run from 0- 10, with 0 being low priority (no temperature reduction) and 10 high priority (large temperature reduction). First order (Strahler) rivers have been removed from this dataset. NAs are where we were unable to make predictions of planting potential e.g. lochs, or in circumstances where we cannot generate the required covariates.
dataset
protocol: OGC:WMS-1.3.0-http-get-capabilities
name: srtmn_tree_planting_prioritisation_shading_rivers
description: Scotland River Temperature Monitoring Network (SRTMN) - Management priority on a scale of 1:9 where 1 is highest priority (i.e. high river temperature and high climate sensitivity) and 9 is lowest (hidden when zoomed in past 1:5
protocol: WWW:LINK-1.0-http--link
description: View data on Marine Scotland Maps
https://doi.org/10.1002/hyp.14314
protocol: WWW:LINK-1.0-http--link
name: https://doi.org/10.1002/hyp.14314
description: A deterministic river temperature model to prioritize management of riparian woodlands to reduce summer maximum river temperatures
function: information
Marine_Scotland_FishDAC_12337
eng
OGP
urn:ogc:def:crs:EPSG::27700
inlandWaters
Habitat
revision
2017-05-03
Environment
revision
2017-02-03
Habitats and biotopes
publication
2008-06-01
-8.210449
-1.025391
59.40782
54.50407
revision
2010-01-01
The entire body of water between the bed and the atmosphere.
2020-09-09
2020-09-09
publication
2020-09-09
Not Planned
River lines in the layers were derived from a Digital Rivers Network licensed from the Centre for Ecology and Hydrology (CEH). Very small rivers (First (Strahler) order rivers on the CEH digital river network) were removed from this dataset. NAs exist where we are unable to make predictions of planting potential. This includes locations in lochs or in circumstances where we cannot generate the required predictor variables. The effects of riparian woodland on the receipt of solar radiation depends on complex interactions between channel width, orientation, aspect, gradient, tree height and solar geometry. Subsequent effects on river temperature are strongly influenced by water volume and residence time which can be broadly characterised by river order. This study developed a simplified river temperature model, driven by energy gains from solar radiation, modified by coarse scale characterisation of hydrological and hydraulic conditions. The resulting output is a planting prioritisation metric that can be mapped at large spatial scales using information obtained from a digital river network to facilitate management decisions. The results indicate that hydrology (water volume) and hydraulics (residence time), as represented by river order, are a dominant control on the effectiveness of riparian woodland in reducing river temperature. Ignoring these controls can result in a sub-optimal prioritisation process and inappropriate allocation of resources. Within river order, the effectiveness of riparian shading depends on complex interactions between channel and landscape characteristics. To create the prioritisation layer, temperature differences (between no trees and tree scenarios) were log transformed, given the skewed nature of the data, and re-scaled between zero (low priority) and ten (high priority). The details of the modelling work that produced these layers can be found in: Jackson, F.L., Hannah, D.M., Ouellet, V. and Malcolm, I.A. (2021) A deterministic river temperature model to prioritise management of riparian woodlands to reduce summer maximum river temperatures (https://onlinelibrary.wiley.com/doi/abs/10.1002/hyp.14314)
Reference must be made to the original publication: Jackson, F. L., Hannah, D. M., Ouellet V. and Malcolm, I. A. (2021). All maps must include the attribution: ‘Based on digital spatial data licensed from the Centre for Ecology & Hydrology, © NERC (CEH)' and 'Contains Ordnance Survey data © Crown copyright [year]'.
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Scottish Government
Mailpoint 11, Area 1B South, Victoria Quay
Edinburgh
EH6 6QQ
United Kingdom
+44 (0)300 244 4000
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Scottish Government
Mailpoint 11, Area 1B South, Victoria Quay
Edinburgh
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United Kingdom
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Scottish Government
Freshwater Laboratory, Faskally
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originator
Scottish Government
+44 (0)300 244 4000
pointOfContact
2022-02-14