Wednesday, 1 June 2016
A unique project to restore the health of a wetland on the lower Murray River west of Wentworth in far western NSW is creating a nursery habitat for native fish.
The project is a collaboration between DPI Fisheries’ Aquatic Habitat Rehabilitation Unit, Local Land Services, DPI Water and Tar-Ru Aboriginal Lands (the land managers for the site), and aims to promote native fish recovery at Tar-Ru Wetland by screening the inlet creek during a wetland drying event.
“Through this project we were hoping to improve stakeholder knowledge and understanding of native requirements, aquatic habitat and water management,” said DPI Fisheries Manager Iain Ellis.
“Dry periods promote wetland productivity in naturally variable environments like the lower Murray River floodplain. Unfortunately adult carp are early colonisers of newly inundated wetlands and their feeding action can impact on plant and plankton emergence which reduces the suitability of the wetlands as native fish nurseries.
A DPI Water program of river level variation to improve environmental health in the lower Murray River itself facilitated the dry phase for this wetland. The Tar-Ru team then erected a temporary screen in the inlet creek to stop larger carp from entering when it was later replenished with water. This screen will still allow smaller native fish like Gudgeon, Smelt and Rainbowfish as well as juvenile Golden and Silver Perch, to enter during high river flows.
“Native fish can then utilise the productive wetland as a ‘nursery habitat’ with rapid growth in the productive wetland,” Mr Ellis said.
DPI Fisheries have also stocked the wetland with young Golden Perch bred at Fisheries Narrandera hatchery, to increase the number of native fish in the nursery wetland. These fish are chemically marked, so will be able to be distinguished from naturally bred fish.
“With the bigger carp excluded from this wetland, we have already recorded improved water quality and aquatic plant germination following re-filling - which will support the growth of the juvenile native fish we stocked, as well as fish that enter the wetland naturally,” Mr Ellis said.
Tar-Ru Wetland is managed by Tar-Ru Aboriginal Land Managers who will assist in maintaining the aquatic habitat health and ongoing environmental monitoring. After a period of growth in the wetland nursery, the screen will be removed to allow native fish to move into the river channel during subsequent filling or draining events.
Lowrance Announces Winter Savings for HDS Gen3 Series
Lowrance, a world-leading brand in fishing electronics since 1957, is excited to announce its winter savings promotion into Australia and New Zealand. Available from June 1st through to September 20th 2016, Lowrance is dropping the RRP by $200 on each sku across the entire HDS Gen3 range.
The Lowrance HDS Gen3 range of MFD’s the next revolutionary step forward for the world’s top-selling and award-winning multi-function display, HDS Gen3 is available in 7-, 9- and 12-inch models and combines a faster processor with enhanced, built-in fishfinder technologies, as well as a modified menu system that’s even easier to use.
With an improved Lowrance user interface plus multi-touch and full keypad operation, the HDS Gen3 series provides quicker, fingertip access to all features – along with an enhanced processor for more responsive performance. Instinctive, icon-driven commands are easy to learn, and features such as scrolling menus, cursor assist, snap-to setting markers and preview panes with quick-touch slider bars, provide a user-friendly feel, similar to operating a smartphone or tablet.
Note: Options also available for head only and alternative transducer skus
For more information on Lowrance HDS Gen3, the entire Lowrance line of marine electronics, or to locate an authorised Lowrance dealer, please call 1300 NAVICO or visit www.lowrance.com