Press Release – Real Communications Silverstream Reserve planting day The Waimakariri Water Zone Committee Biodiversity Working Group is seeking trustees for an independent community-based Biodiversity Trust that will work collaboratively to improve the local environment. Biodiversity … Silverstream Reserve planting day The Waimakariri Water Zone Committee Biodiversity Working Group is seeking trustees for an independent community-based Biodiversity Trust that will work collaboratively to improve the local environment. Biodiversity Working Group member Dr Judith Roper-Lindsay says they are seeking people from a variety of age groups and backgrounds to reflect the diverse range of people living in Waimakariri who are interested in the protection, restoration, and development of native biodiversity.