FEATURE REPORT/ ARTICLE OF THE WEEK
Authored by David J. Sharley, Simon M. Sharp, Stephen Marshall, Katherine Jeppe, Vincent J. Pettigrove
Constructed wetlands are recognized as a cost-effective and socially acceptable stormwater treatment option within urban landscapes, satisfying a range of urban design objectives, including flood protection and treating stormwater. While wetlands also provide habitat for aquatic biota, and often act as a refuge for wildlife, there is growing concern that as wetlands become polluted, they could become toxic to aquatic life and lead to extensive costs for the disposal of sediments.Here we assessed the sediment quality of 98 constructed wetlands across an urban landscape and determined whether concentrations of pollutants present can be correlated to catchment land uses, geology or wetland age. Using boosted regression trees, we find that land use type is an important determinant of the concentrations of heavy metals and petroleum hydrocarbons in sediments. Wetlands with >10% industries in their catchments have significantly higher sediment-bound concentrations of trace metals than wetlands draining catchments with little industrialization. Results suggest that the age of wetlands and their catchment geology significantly influences sediment quality. This research improves our understanding of the factors influencing pollution in urban areas and will enable wetlands to be better designed and managed to minimize their environmental impacts and maintenance costs.
Read the whole piece here.
Published by ELSEVIER.
ONLINE PUBLICATION OF THE WEEK
Published by 100 resilient cities<
Extending from the Sea of Japan to the crest of the Northern Japan Alps, Toyama is a thriving high tech city surrounded by and infused with nature.The Toyama vision is to be a vibrant city of innovation and a tourism gateway, a model of resilience and environment friendly living, where strong community bonds help citizens flourish, and the high quality of an active lifestyle for all its residents achieves a harmonious balance between traditional arts and modern technology and between economic prosperity and the inspiring natural surroundings of the pristine Northern Japan Alps. This report elaborates on Toyama’s strategies to become a resilient city.
Read the publication here.
VIDEO / PODCAST OF THE WEEK
‘The Happy city experiment‘
Created by Tedx Vancouver
This talk was given at a local TEDx event, produced independently of the TED Conferences. Charles Montgomery explores what happens when you take an abandon city space in NYC and populate it with urban social experiments. The outcomes are unexpected as city dwellers explore this public space, interact with each other, and change their attitudes towards social connections, values, and each other.Charles Montgomery explores what happens when you take an abandoned NYC space and infuse it with social experiments. The results are surprising and inspiring.