IACA – Institution of Australian Consulting Arboriculturists | Find a consulting arborist
AA – Arboriculture Australia
ISA – International Society of Arboriculture | Find an arborist
TREENET – a non-profit organisation dedicated to improving the urban forest
LGTRA – Local Government Tree Resources Association
Urban Forest – City of  Melbourne Urban Forest  Visual
TCAA – Tree Contractors Association Australia
NGIA – Nursery & Garden Industry Australia
202020 Vision – 20% more urban green space by 2020
Australian Institute of Horticulture

 Forests — Open Access Forestry Journal (including articles on the urban forest)