09077: Management actions to address climate change and degradation of Oyster Harbour catchment
The Oyster Harbour estuary is listed as a nationally significant wetland and is a high profile and highly valued asset of the Albany community. Significant areas of the catchment are at risk from degradation hazards such as wind and water erosion, eutrophication (excess nutrients) and weed infestation.
This project used data from the Department of Agriculture and Food, Western Australia and the Department of Water to identify high-priority remnant vegetation and riparian areas at risk from land degradation processes.
Once identified, these areas were protected with 40 km of fencing and 40 ha of revegetation. Infestations of Sydney golden wattle were also removed from 40 ha near high-conservation reserves or riparian areas.
Sydney golden wattle is an invasive shrub that can fix nitrogen and alter the nutrient balance of the soil, like other acacias. Therefore, dense stands of this species may increase soil fertility to the point where the growth and regeneration of some indigenous species will be inhibited or prevented. The long-lived seeds of this species are stimulated to germinate by fire and very dense populations can follow fires, particularly where the indigenous vegetation has been removed or significantly disturbed.
|Investment:||$ 116 000|
|In-kind contribution:||$ 135 253|
|Other contribution:||$ 56 876|
|Delivery organisation:||Oyster Harbour Catchment Group|
|Project duration:||June 2010 - September 2011|
|Location:||Oyster Harbour Catchment|
Major project achievements
- Areas at high risk from eutrophication and salinity identified.
- 40 ha of riparian areas revegetated to reduce water erosion, increase biodiversity and filter nutrients.
- 40 km of fencing installed to prevent degradation and pollution of streams by stock access and loss of biodiversity.
- 40 ha of Sydney golden wattle and other high-priority weeds near high conservation reserves and riparian areas controlled.
- Leveraged weed control activities with the Caring for our Country program (matching funds plus in-kind) and the Plantagenet Shire (matching funds plus in-kind).
Kendenup Bushland Management Group; Shire of Plantagenet; Department of Water; Department of Environment and Conservation; Pardellup Prison Farm work team; South Coast NRM; Work for the Dole team