Freshwater Update 76, March 2018

Freshwater Update 76 brings you the latest information from our Freshwater & Estuaries Centre, with articles ranging from spring and river water condition to urban waters, didymo and aquatic plant scientists.

Assessment of Resilience in Urban Social-Ecological Systems

Water Sensitive Urban Design (WSUD) has emerged as a form of development that, among other objectives, aims to deliver resilient water ways providing a range of benefits to urban communities. NIWA’s Urban Aquatic Environments group has investigated how resilience concepts provide a basis for discriminating between WSUD and conventional urban development approaches.

The origin of Didymo

Didymo, a mat-forming freshwater diatom is now a familiar and unwelcome feature of many South Island rivers. In New Zealand, it is generally accepted that didymo is an introduced organism, but not everyone accepts that. New science provides a strong case for its ‘introduced organism’ status.