Keeping Rivers Cool creating riparian shade Environment ... Rivers Cool - R Lenane.pdf · Keeping...
Transcript of Keeping Rivers Cool creating riparian shade Environment ... Rivers Cool - R Lenane.pdf · Keeping...
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Keeping Rivers Cool – creating riparian shade
Rachel Lenane
Environment Agency, England
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Promote riparian shade as a climate change adaptation measure to benefit salmon and trout by reducing river temperatures throughout upland England and Wales.
Inspire action through demonstration projects, a strong evidence base, guidance and mapping tools.
Programme Objective
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The Evidence
Keeping Rivers Cool tools
Demonstration projects
Obstacles & risks
Next steps
Talk Outline
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Salmon & brown trout and T°C
Critical temperature ranges:
>22.5oC
>19.5oC
22oC for >7 days lethal for b. trout
Evidence – Tools – Pilots – Obstacles/ Risks – Next Steps
UKCP09 Climate Projections
Rise of 2-4°C by 2050
>31°C recorded in S. England
Shaded channels are 1.5°C lower than open reaches
Gathering the Evidence
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Effects of riparian trees on summer water temperatures:
Shaded channels are 1.5oC lower on average than open reaches
Or 2-3oC in maximum temperatures
Buffers associated with woodland can be up to 5oC cooler
Evidence – Tools – Pilots – Obstacles/ Risks – Next Steps
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Do we need more riparian vegetation in England and Wales?
Commissioned LiDAR data to tell us about extent of riparian vegetation in England & Wales
Evidence – Tools – Pilots – Obstacles/ Risks – Next Steps
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Do we need more riparian
vegetation in England and Wales?
Evidence – Tools – Pilots – Obstacles/ Risks – Next Steps
7
588
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64 5029 13 10 5 5 4 2 2 0 0
0
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0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 More
% of channel lined by trees
Num
ber
of w
ate
r bodie
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15% 30%
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Creating tools for partners
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Developing riparian shade maps
Evidence – Tools – Pilots – Obstacles/ Risks – Next Steps
Riparian shade maps
Show relative shade within a WFD Mgt catchment boundary
Used alongside ground truthing and other data sets
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Developing a guidance manual
Evidence – Tools – Pilots – Obstacles/ Risks – Next Steps
Guidance manual includes:
The science behind creating riparian shade
The mapping tools available
Where to target riparian shade
Funding sources available
Distributed to landowners and partners (Woodland Trust, CCW, CEH, NE, Rivers Trusts, WLTs, on RESTORE wiki)
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Rivers Trust catchment mapping portal
http://maps.theriverstrust.org/SMP/Map
Evidence – Tools – Pilots – Obstacles/ Risks – Next Steps
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Developing communications
Evidence – Tools – Pilots – Obstacles/ Risks – Next Steps
Fish magazine, EU RESTORE wiki, River Restoration Centre, Defra biodiversity news
River Basin bulletin, quarterly ‘keeping rivers cool’ newsletters, National cascade
Conferences
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Moving from maps & manuals to action on the ground
SKM consultants
Evidence – Tools – Pilots – Obstacles/ Risks – Next Steps
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Awarded funding & selected
pilot catchments
Environment
Agency
Evidence – Tools – Pilots – Obstacles/ Risks – Next Steps
Objectives:
Create case studies
Increase riparian shade Demonstrate ways to do it Monitor results
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Progress in Hampshire Avon
Environment
Agency
Evidence – Tools – Pilots – Obstacles/ Risks – Next Steps
£4k 2012/13 – 80m fencing, 200 trees £20-40k 2013/14
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Environment
Agency
Evidence – Tools – Pilots – Obstacles/ Risks – Next Steps
Lugg & Arrow (Wye catchment, Herefordshire – eng/ wales border):
Natural regeneration only (SSSIs SACs) ~£70k for fencing
Progress in Herefordshire
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Environment
Agency
Evidence – Tools – Pilots – Obstacles/ Risks – Next Steps
2012/2013 £288k (EA spend) +£81k (contributions in kind) 35,000 trees & 15km fencing (target 37,000 trees, fencing target 13km) 2013/14 Aiming for ~22,000 trees and 15km fencing (c. £115k)
Progress in the Ribble
Planting Volunteers (courtesy of the Ribble Rivers Trust)
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Landowner agreements Internal change Weather Beavers??
Evidence – Tools – Pilots – Obstacles/ Risks – Next Steps
Resources Ash die back Procurement process State aid
Obstacles & Risks
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Monitoring plan External funding Distribution of riparian shade maps Further communications Working riparian trees as a measure into CAP reform, HLS, EWGS Integrating the measure into river basin plans
Next Steps
Evidence – Tools – Pilots – Obstacles/ Risks – Next Steps
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“I have seen the tree planting at Durnford today when I walked
up and fished beat 12, the hatchpool. I am very happy with
what has been achieved and have no doubt it will benefit the
river environment without impacting adversely on our anglers.
Many thanks.”
e-mail to Environment Agency from Vice Chair of Salisbury &
District Angling Club (18/04/2013)
Thank you for listening! Any questions?