The Melbourne Water magazine 'The Source' (June 2003) has an informative article about ecosystem services and the actions of New York City to protect potable water catchments.
Investments are being made in vegetation and land protection to comply with an EPA directive regarding water quality. The alternative investment in a water filtration plant would have cost five times as much.
Get hold of a copy of 'The Source' for June 2003 !
The concept of ecosystems services is more commonly applied to landscapes on the scale described in this article but it has relevance at the street and park level in urban landscapes.
