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NOTICE: SIGNALT Calculations are currently running through final testing and may be inaccurate until completed.

Bielsdown River @ Dorrigo 44099

Source Office of Environment and Heritage
Latest Sample Date 27-05-2010
Taxa count ORDER 12
Taxa count FAMILY 24
Taxa count ALT 24
Mayflies present? 15
ORDER FAMILY ALT
SIGNAL 3.6 4.2 3.4
Weighted SIGNAL 5.2 4.7

Waterbug Land Use

Category ALUM Categories Percent of upstream catchment Area
  Pastoral Farming 3.2.0 Grazing modified pastures, 3.2.1 Native/exotic pasture mosaic, 3.2.5 Sown grasses 64.17% 2,103,055,666m2
  Minimal Use 1.3.3 Residual native cover, 2.1.0 Grazing native vegetation 19.50% 639,212,975m2
  Residential And Infrastructure 5.4.0 Residential and farm infrastructure, 5.4.1 Urban residential, 5.5.3 Recreation and culture, 5.7.2 Roads 7.08% 231,895,872m2
  Water 6.2.0 Reservoir/dam, 6.3.0 River, 6.5.0 Marsh/wetland 5.92% 193,912,927m2
Show minor land uses 4
32,772,784m2

Waterbug sample history

Taxa Abundance SIGNALT Grade
Turbellaria IF 2 2
Dugesiidae (Unident.) IF619999
2
Gastropoda KG 1 1
Physidae (Unident.) KG089999
1
Oligochaeta LO 1 2
Oligochaeta (Unident.) LO999999
1
Acarina MM 5 6
Mites (Unident.) MM999999
5
Mites (Unident.)
Unknown OT 20
Atyidae (Unident.) OT019999
20
Atyidae (Unident.)
Atyidae (Unident.)
Coleoptera QC 5 5
Dytiscidae (Unident.) QC099999
4
Elmidae (Unident.) QC349999
1
Elmidae (Unident.)
Diptera QD 17 3
Ceratopogonidae (Unident.) QD099999
4
Ceratopogonidae (Unident.)
Orthocladiinae (Unident.) QDAF9999
10
Chironominae (Unident.) QDAJ9999
3
Ephemeroptera QE 15 9
Leptophlebiidae (Unident.) QE069999
8
Caenidae (Unident.) QE089999
7
Hemiptera QH 21 2
Corixidae (Unident.) QH659999
11
Notonectidae (Unident.) QH679999
10
Lepidoptera QL 2 2
Crambidae (Unident.) QL019999
2
Crambidae (Unident.)
Odonata QO 10 3
Coenagrionidae (Unident.) QO029999
2
Lestidae (Unident.) QO059999
5
Megapodagrionidae (Unident.) QO079999
1
Corduliidae (Unident.) QO169999
1
Libellulidae (Unident.) QO179999
1
Trichoptera QT 43 8
Hydroptilidae (Unident.) QT039999
5
Conoesucidae (Unident.) QT159999
8
Philorheithridae (Unident.) QT219999
1
Leptoceridae (Unident.) QT259999
29
ORDER
SIGNALT 3.6
Weighted SIGNALT 4.1