TY - BOOK
T1 - University of Dundee Botanic Garden Tree Asset Valuation Report
T2 - An i-Tree Eco and CAVAT assessment
AU - Frediani, Kevin
AU - Rogers, Kenton
AU - Screech, Katie
PY - 2024/6/14
Y1 - 2024/6/14
N2 - This report highlights the findings of a study to record the structure and composition of the trees within the University of Dundee’s public facing landscapes to calculate some of the benefits, public goods, or ecosystem services they provide. This report examines two areas: the Botanic Garden, and the Campus. The report highlights the tree resources on each site, and their contribution to mitigating some of the environmental impact while adding significant value to the University urban estate beyond its perceived amenity.• 1,378 trees over 7cm DBH were recorded in the University of Dundee Botanic Garden and main campus grounds. • Their potential is to remove over 60.3 kg of air pollution annually at a current value of £4,400. These pollutants include Sulphur dioxide (SO2), particulate matter (PM2.5) and nitrogen dioxide (NO2).• These trees reduce water runoff by 1,600 m³ per year, preventing it from entering the combined water drainage system, worth an estimated £2,600 in avoided surface runoff water treatment costs. A highlighted priority in the ‘Local flood risk management plan’, due to the risk of being overwhelmed during extreme rainfall events.• In total, the trees store over 633 tonnes of carbon and sequester a further 15.7 tonnes of carbon annually - with associated values of around £624,000 and £15,400 respectively.• Trees also confer many other benefits as part of functional urban ecosystems, including habitat provision, soil conservation and noise reduction which currently cannot be valued. These should be considered when shaping policy or strategy documents. Reported values herein are a conservative estimate of overall benefits. • 243 species of tree are recorded within the University’s tree inventory, with a relatively even spread that shows little reliance on a single species dominance. The most common tree species are Pinus sylvestris (Scots pine) with 153 trees, Betula pendula (silver birch) with 114 trees, and Eucalyptus gunnii (cider gum) with 93 trees. Note: this is likely to be an underestimation of tree diversity, reflecting multiple surveyors and identification ability, that will be improved with subsequent surveys.• The tree population includes a wide variety of species, which is a good indication that the sites will be more resilient to pests, diseases, and climate change than a less diverse treescape. The most prominent threats in this regard are Dothistroma needle blight, acute oak decline, and oak lace bug. • The amenity value of the campus and garden trees were calculated to be £38.1 million, as determined using a CAVAT valuation approach. The replacement cost of these trees was an estimated £1.48 million
AB - This report highlights the findings of a study to record the structure and composition of the trees within the University of Dundee’s public facing landscapes to calculate some of the benefits, public goods, or ecosystem services they provide. This report examines two areas: the Botanic Garden, and the Campus. The report highlights the tree resources on each site, and their contribution to mitigating some of the environmental impact while adding significant value to the University urban estate beyond its perceived amenity.• 1,378 trees over 7cm DBH were recorded in the University of Dundee Botanic Garden and main campus grounds. • Their potential is to remove over 60.3 kg of air pollution annually at a current value of £4,400. These pollutants include Sulphur dioxide (SO2), particulate matter (PM2.5) and nitrogen dioxide (NO2).• These trees reduce water runoff by 1,600 m³ per year, preventing it from entering the combined water drainage system, worth an estimated £2,600 in avoided surface runoff water treatment costs. A highlighted priority in the ‘Local flood risk management plan’, due to the risk of being overwhelmed during extreme rainfall events.• In total, the trees store over 633 tonnes of carbon and sequester a further 15.7 tonnes of carbon annually - with associated values of around £624,000 and £15,400 respectively.• Trees also confer many other benefits as part of functional urban ecosystems, including habitat provision, soil conservation and noise reduction which currently cannot be valued. These should be considered when shaping policy or strategy documents. Reported values herein are a conservative estimate of overall benefits. • 243 species of tree are recorded within the University’s tree inventory, with a relatively even spread that shows little reliance on a single species dominance. The most common tree species are Pinus sylvestris (Scots pine) with 153 trees, Betula pendula (silver birch) with 114 trees, and Eucalyptus gunnii (cider gum) with 93 trees. Note: this is likely to be an underestimation of tree diversity, reflecting multiple surveyors and identification ability, that will be improved with subsequent surveys.• The tree population includes a wide variety of species, which is a good indication that the sites will be more resilient to pests, diseases, and climate change than a less diverse treescape. The most prominent threats in this regard are Dothistroma needle blight, acute oak decline, and oak lace bug. • The amenity value of the campus and garden trees were calculated to be £38.1 million, as determined using a CAVAT valuation approach. The replacement cost of these trees was an estimated £1.48 million
UR - https://treeconomics.co.uk/resources/reports/
M3 - Commissioned report
BT - University of Dundee Botanic Garden Tree Asset Valuation Report
PB - University of Dundee
CY - Dundee, Scotland
ER -