Gwydir 17/09/14 – 07/03/15 Fresh flow 30.000 Allow for sediment Pallamalla on Water quality parameters within Due primarily to dilution (00016-01) transport, nutrient Gwydir River normal ranges effects metabolism not and carbon cycling monitored Reduced average pH, conductivity, and dissolved oxygen (DO); DO linked with low chlorophyll-a (algae) concentrations Lachlan 03/10/14 – 29/10/14 Fresh flow 5.000 None Wallanthery, Gross primary productivity and Dilution and light attenuation (10013-01) Lanes Bridge, ecosystem respiration were both during flow Cowl Cowl, reduced in the target reach but Subsequent flow-independent Whealbah increased in the weeks following increases require further research 12/08/14 – 20/01/15 Wetland, 40.000 Support ecosystem Upper North Rates of decomposition were not Water volumes released were return flows functions, such as Redbank influenced by the release too small relative to the total (10023-01) mobilisation, river volume to drive primary transport and productivity or environmental dispersal of biotic respiration downstream of the and abiotic material release (e.g. macroinvertebrates, nutrients and organic matter) through longitudinal and lateral hydrological connectivity
Gwydir (00016-01) 17/09/14 – 07/03/15 Fresh flow 30.000 Allow for sediment transport, nutrient and carbon cycling Pallamalla on Gwydir River Water quality parameters within normal ranges Reduced average pH, conductivity, and dissolved oxygen (DO); DO linked with low chlorophyll-a (algae) concentrations Due primarily to dilution effects metabolism not monitored Lachlan (10013-01) 03/10/14 – 29/10/14 Fresh flow 5.000 None Wallanthery, Lanes Bridge, Cowl Cowl, Whealbah Gross primary productivity and ecosystem respiration were both reduced in the target reach but increased in the weeks following Dilution and light attenuation during flow Subsequent flow-independent increases require further research (10023-01) 12/08/14 – 20/01/15 Wetland, return flows 40.000 Support ecosystem functions, such as mobilisation, transport and dispersal of biotic and abiotic material (e.g. macroinvertebrates, nutrients and organic matter) through longitudinal and lateral hydrological connectivity Upper North Redbank Rates of decomposition were not influenced by the release Water volumes released were too small relative to the total river volume to drive primary productivity or environmental respiration downstream of the release