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Table 1

Results of water body monitoring in the Sprockhoevel creek for some basic water quality parameters and benthic invertebrate fauna of three different years including taxa list in excerpts and determined ecological status

Date of sampling14.04.201011.03.201323.03.2016
Water temperature [°C] 9.8 11.7 7.6 
pH value [−] 8.2 8.0 8.2 
Total nitrogen [mg/l] 1.5 1.7 1.4 
NH4-N [mg/l] 0.10 0.05 0.05 
Total phosphorus [mg/l] 0.04 0.02 0.04 
Oxygen [mg/l] 11.3 10.9 11.6 
Total organic carbon [mg/l] 1.5 1.7 2.8 
Amount of taxa 28 23 29 
Individuals per square metre 449 556 1,826 
Amongst them 
 Family of Ephemera 18 20 
  Ephemera sp. --- --- 12 
  Ephemera danica 18 1 8 
 Family of Gammaridea 180 355 952 
  Gammarus sp. --- --- 204 
  Gammarus fossarum 71 300 632 
  Gammarus roeselii 109 55 116 
 Family of Chironomidae 86 64 576 
  Chironomidae 71 60 --- 
  Chironominae --- 2 --- 
  Chironomini 15 2 576 
Ecological status determined for benthic invertebrate fauna good good moderate 
Date of sampling14.04.201011.03.201323.03.2016
Water temperature [°C] 9.8 11.7 7.6 
pH value [−] 8.2 8.0 8.2 
Total nitrogen [mg/l] 1.5 1.7 1.4 
NH4-N [mg/l] 0.10 0.05 0.05 
Total phosphorus [mg/l] 0.04 0.02 0.04 
Oxygen [mg/l] 11.3 10.9 11.6 
Total organic carbon [mg/l] 1.5 1.7 2.8 
Amount of taxa 28 23 29 
Individuals per square metre 449 556 1,826 
Amongst them 
 Family of Ephemera 18 20 
  Ephemera sp. --- --- 12 
  Ephemera danica 18 1 8 
 Family of Gammaridea 180 355 952 
  Gammarus sp. --- --- 204 
  Gammarus fossarum 71 300 632 
  Gammarus roeselii 109 55 116 
 Family of Chironomidae 86 64 576 
  Chironomidae 71 60 --- 
  Chironominae --- 2 --- 
  Chironomini 15 2 576 
Ecological status determined for benthic invertebrate fauna good good moderate 
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