2018 | Andrew Hirons, PhD and Co-Investigator Henrik Sjöman, PhD, Myerscough College, UK
The increasing prominence of stormwater management schemes provides excellent opportunities for the integration of trees into new urban developments, however, there is considerable uncertainty over which species will perform best in these schemes. A notable feature of landscapes designed to manage stormwater is that the substrates used are very free draining. This means that the tree species used must be tolerant to periods of both waterlogging and drought (water deficit).
This project aims to develop a new trait that can be used to develop robust recommendations on the tolerance of trees to waterlogging. This will form part of a constellation of traits that can be used to characterise the tolerance of species to a suite of key stressors in urban landscapes.
As sapflow in trees integrates the aerial and underground environments it has significant value in assessing the physiological activity of different species under contrasting environmental conditions. This study will look at the decline in sapfow under waterlogging and use this to quantitatively evaluate a range of species’ waterlogging tolerance. Further data will be collected on the species’ drought tolerance. It is anticipated that this information will transform the confidence of recommendations for stormwater management and provide a model for others in the research community to quantitatively evaluate tolerance to waterlogging. The overall goal of the project is to improve the confidence of tree selection for stormwater management schemes and sites prone to waterlogging.
Funding Duration: 3-5 years
Grant Program: Hyland R. Johns Grant
Grant Title: Enhancing the performance of urban storm water management schemes with tree selection: developing a new approach to assessing waterlogging tolerance in temperate trees
Researcher: Dr. Andrew Hirons and Dr. Henrik Sjöman
Peer Reviewed Publications from Grant:
General Audience/Trade Publications:
- Hirons, A. and Sjöman, H. “Species Selection for Paved Environments: Translating Science into Practice.” City TREES. July/Aug 2018, Vol. 54, No. 4: p. 32-36.
For more information on this project, contact the researcher via TREE Fund at firstname.lastname@example.org.