*Department of Wetland A 5-year wetland Considers restriction of Potential risks and Maintain or improve the diversity and Environment, Complex wetting and drying Carp entry and timing of benefits for native abundance of native fish and reduce the Water and plan is presented wetting/drying cycles of flora and fauna abundance of introduced fish species via: (Pilby Lagoon: Natural the wetlands to restrict associated with 10.8 ha; Pilby implementation of a hydrological regime Resources Carp recruitment wetting/drying cycles Creek: 33 ha; (wetting/drying) that incorporates variable (Berri): Scott and and the application of Lock 6 hydrology in order to promote food Suitor (2012) the proposed Carp depression: production, support the establishment screens 5 ha) and improvement of habitat condition and support recruitment of native fish operate and maintain current Carp screens on the inlet structure that are of the vertical bar’ style, whereby allowing ‘jail large-bodied native species, e.g. Bony Herring (Nematalosa erebi) to enter the wetland, but exclude Carp Implementing a monitoring program to assess the best time of year for wetting/drying cycles of the wetland so as to determine when spawning and recruitment is most predominant. *Riverine North A 5-year wetland Considers restriction of Potential risks and Implementation of optimised fish screens Recovery Caurnamont wetting and drying Carp entry and timing of benefits for native with integrated one-way gates (push traps) Program (~62 ha) plan is presented wetting/drying cycles of flora and fauna at each of the inlet/outlet regulators. (DEWNR 2013) the wetlands to restrict associated with Wetting and drying cycles over a 5-year Carp recruitment, but at wetting/drying cycles period to be implemented in order to the same time promote and the application of restrict Carp recruitment and promote native fish recruitment the proposed Carp native fish and vegetation recovery. screens
*Department of Environment, Water and Natural Resources (Berri): Scott and Suitor (2012) Wetland Complex (Pilby Lagoon: 10.8 ha; Pilby Creek: 33 ha; Lock 6 depression: 5 ha) A 5-year wetland wetting and drying plan is presented Considers restriction of Carp entry and timing of wetting/drying cycles of the wetlands to restrict Carp recruitment Potential risks and benefits for native flora and fauna associated with wetting/drying cycles and the application of the proposed Carp screens Maintain or improve the diversity and abundance of native fish and reduce the abundance of introduced fish species via: implementation of a hydrological regime (wetting/drying) that incorporates variable hydrology in order to promote food production, support the establishment and improvement of habitat condition and support recruitment of native fish operate and maintain current Carp screens on the inlet structure that are of the vertical ‘jail bar’ style, whereby allowing large-bodied native species, e.g. Bony Herring (Nematalosa erebi) to enter the wetland, but exclude Carp Implementing a monitoring program to assess the best time of year for wetting/drying cycles of the wetland so as to determine when spawning and recruitment is most predominant. *Riverine Recovery Program (DEWNR 2013) North Caurnamont (~62 ha) A 5-year wetland wetting and drying plan is presented Considers restriction of Carp entry and timing of wetting/drying cycles of the wetlands to restrict Carp recruitment, but at the same time promote native fish recruitment Potential risks and benefits for native flora and fauna associated with wetting/drying cycles and the application of the proposed Carp screens Implementation of optimised fish screens with integrated one-way gates (push traps) at each of the inlet/outlet regulators. Wetting and drying cycles over a 5-year period to be implemented in order to restrict Carp recruitment and promote native fish and vegetation recovery.
ARI-Technical-Report-255-Managing-flows-and-carp.docx