Table 3.2 . Risk assessment of five PSII herbicide mixtures to monitored rivers and estuaries based on the ms-PAF risk metric , which accounts for the magnitude of exposure on a temporal scale . Values represent the average per cent of species affected during the wet season .
Wet Tropics |
Burdekin |
Mackay Whitsunday |
Fitzroy * |
Burnett Mary |
Johnstone |
Lower Burdekin |
|
|
|
|
Russell |
Mulgrave |
North Coquette Tully Herbert Haughton Barratta Burdekin O ’ Connell Pioneer Sandy Fitzroy Burnett Mary |
|
2010-2011 ND ND 0.3 ND 2 3 ND 7 0.8 ND 8 18 1 0.4 ND 2011-2012 ND ND 0.2 ND 3 0.7 ND 12 0.3 ND 11 16 0.4 1 ND 2012-2013 ND ND 0.2 ND 5 3 ND 17 0.5 ND 13 19 1 1 ND 2013-2014 3 0.9 0.5 ND 3 1 0.4 25 0.9 4 16 24 0.4 0.3 0.2 2014-2015 7 4 0.7 ND 5 2 1 18 0.7 10 14 37 1 0.7 0.8
2015-2016 4 3 0.5 2 6 3 4 17 0.3 2 13 27 1 0.6 0.5 ND = No monitoring data available .
Table 3.3 . Exceedances of ecotoxicity threshold values for individual pesticides in catchments of the Burdekin and Mackay Whitsunday regions between 2013 and 2016 . Exceedances were determined using the annual 95th percentile concentration from samples collected during 2013-2014 ( 2013 ), 2014-2015 ( 2014 ) and 2015-2016 ( 2015 ) monitoring years . Risk categories : dark green = > 99 per cent species protection , light green = 95 per cent species protection , yellow = 90 per cent species protection , orange = 80 per cent species protection , red = < 80 per cent species protection , grey = no analysis , white = < limit of reporting ( LOR ), i . e . no detection or at least only one ; 99 per cent species protection . Where the 95 th percentile concentration was < LOR , but the pesticide was detected ( above the LOR ) in ≤ 5 per cent of samples , the cell was shaded the risk category colour dependent on the LOR concentration relative to the ETV .
Burdekin region
Pesticides
Haughton Barratta Burdekin
2013 2014 2015 2013 2014 2015 2013 2014 2015
2,4-D Ametryn Bromacil Diuron Fluometuron Fluroxypyr Glyphosate Haloxyfop Hexazinone
< LOR
Imazapic Isoxaflutole
13