The Understorey Network promotes the protection of existing native vegetation and the use of local native understorey in vegetation,through field days and workshops, growing of plants from seed and the maintenance of a plants database. Groups and Individuals are assisted with expertise sharing through a support network. What you can do to support the network is to fence or plant understorey on your land, grow plants for yourself or others,or collect seed etc. Further information; E-mail UNDERSTOREY NETWORK The understorey is likely to be made up of shrubs, tree seedlings, low trees, grasses, other herbs, vines, ferns and mosses. A hectare of natural woodland may contain 3-4 species of tree but perhaps in excess of 30 understorey species. Serious tree decline is widely publicised , while understorey species are disappearing at an even faster rate yet is often overlooked. Understorey provides shelter for young livestock,is vital to beekeepers, Improves soil fertility, makes a more pleasant environment, attracts small song birds, assists natural pest control, provides emergency feed for stock, stabilises soil, provides a fuel source. Important as the understorey is, if improperly managed it can be a nuisance and reduce rural incomes. WHAT YOU CAN DO: Determine conservation values BEFORE any land clearing or construction commences on your property. Control weeds, rabbits & other vermin. Protect Bushland for future generations by writing a: CONSERVATION COVENANT on the land's title. Encourage natural regeneration. Remove weeds manually, reduce the use of herbicides. Fence off areas. Plant LOCAL understorey. Sow seeds into prepared ground on site. Do not overburn. Reduce winds. Join Tasmanian Understorey Network, or ...GREENING AUSTRALIA Animals of the Soil & Litter Layer Immediately above the topsoil is a layer of organic debris from plants & animals known as litter. This layer is important to soil formation, and contains great numbers of tiny animals. These animals over centuries together with dead plants have broken down and created byproducts, which in turn have created a rich humus. If soil organisms, plants and litter are removed, nutrient recycling is interrupted, the soil structure is damaged and long term fertility is reduced. At least 1/3rd of Australia's native mammal species depend directly upon this layer for food and shelter. The moist litter also provides a home and feeding space for several frog species. Ants & Other Species There are at least 110,000 species of native Australian insects. Many of these need native vegetation as part of their lifecycle. Any changes to native vegetation will affect the insects. Careful choices of native plants can improve habitat for native insect species which in turn will improve the number of insect eating birds and other animals. Ants are important pest controllers for trees. Some ants live entirely in the ground layer, their role is to decompose organic matter. Threatened Species Most of Australia's GROUND DWELLING MAMMALS depend on food from the litter layer, including dunnarts, antechinuses, and the planigales plus bandicoots. Shade is essential for the survival of these species in the drier areas. In cold climates, if exposed to the winter winds they need up to about twice their usual food to keep warm. Shelter from trees & other plants reduces heat loss. About a third of Australia's mammals live in trees including bats, possums, gliders, koalas,2 species of tree kangaroos and several species of native rodent. Some TREE DWELLING MAMMALS help pollinate certain trees and shrubs through pollen sticking on their fur or from their tongue as they feed . ENCOURAGING WILDLIFE Wildlife on farms can protect soil fertility and maintain the health of shade trees . Unproductive areas can be valuable for wildlife. A strategy can be developed to include : FENCING OFF REMNANTS of the original native vegetation INCLUSION OF APPROPRIATE DIVERSITY of tree & shrub species CONSERVATION OF NATIVE UNDERSTOREY LEAVING OF OLD DEAD TREES to provide nest hollows for birds & mammals ERECTING NEST BOXES IN OTHER TREES DEVELOPING FARM DAMS AS SHARED HABITAT for wildlife & stock PLANTING CORRIDORS OF TREES ENSURING THAT NATIVE VEGETATION ON ROADSIDES,STOCK ROUTES & STREAMSIDES IS MANAGED PROPERLY. Many species are rarely sighted e.g. the hastings river mouse, the narrow nosed planigale , the parma wallaby and the mountain possum were all considered extinct , until recently rediscovered. Landholders can help if they keep a list of animals seen on their land, plus any unknown dead animals should be collected or photographed. DID YOU KNOW? - over 50 species of Australian Animals and nearly 70 species of Australian plants are extinct. Further,about 280 species of native animals and over 1160 species of native plants may become extinct in the near future. In Australia , the Federal Government's Natural Heritage Trust is helping conserve and protect threatened species through joint programmes such as the World Wide Fund for Nature and the Threatened Species Network.
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