Annual report 2006-2007 - Taranaki Regional Council

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Macroinvertebrate communities Previous surveys performed in the Kahouri Stream have indicated that the macroinvertebrate communities are generally in good condition with relatively high numbers of taxa and MCI values. Some farmland-related (and possibly natural habitat and temperature related) decline in MCI values has been observed down the length of the stream. Results of previous surveys performed in the Kahouri catchment are summarised in Table 2, together with current results and are illustrated in Figures 2 and 3. The full results are shown in Table 3. Table 2 Summary of the numbers of taxa and MCI values recorded previously in the Kahouri Stream and tributary (site D), together with current results Site Number of Numbers of taxa MCI values SQMCIS values previous surveys Median Range Current Median Range Current (8 previous surveys only) Median Range Current Survey Survey Survey A 17 26 19-35 17 113 106-130 118 5.7 5.5-6.4 6.4 C 20 28 17-35 29 108 96-120 99 4.5 3.5-5.4 4.8 D 19 22 10-34 24 91 73-106 95 5.0 1.3-6.3 6.4 E 24 23 10-33 27 99 81-109 104 4.9 3.1-5.6 6.0 F 13 23 18-31 26 98 87-112 96 4.2 2.3-5.8 5.5 G 17 24 14-31 22 97 86-110 95 3.8 2.9-6.5 5.4 N 20 25 6-34 29 96 73-103 93 4.3 3.8-6.7 4.8 4
Table 3 Macroinvertebrate fauna of the Kahouri Stream and a tributary (site D), sampled on 17 April <strong>2007</strong> score HBMCI Taxa List Site Number Site Code Sample Number A KHI000297 FWB07232 C KHI000307 FWB07233 D KHI000367 FWB07234 E KHI000400 FWB07235 F KHI000457 FWB07236 G KHI000465 FWB07237 N KHI000480 FWB07238 Nematoda Nematoda 3 - R - - - - R Nemertea Nemertea 3 - - - - R - - Annelida(Worms) Oligochaeta 1 C C A C C A A Mollusca Ferrissia 3 - - - - - - R Potamopyrgus 4 - - R - - C C Crustacea Copepoda 5 - - C - - - - Ostracoda 1 - C C - - - - Paracalliope 5 - - - - R - - Paranephrops 5 - - R - - - - Ephemeroptera(Mayflies) Ichthybotus 8 - R - - - - - Nesameletus 9 R A R R - - - Coloburiscus 7 XA A R VA A VA VA Deleatidium 8 VA A - A VA A VA Austroclima 7 A A XA VA A VA A Zephlebia group 7 - R - - - - - Plecoptera(Stoneflies) Zelandoperla 8 R - - - R - - Zelandobius 5 - - - R R - - Odonata(Dragonflies) Xanthocnemis 4 - - R - - - - Coleoptera(Beetles) Hydraenidae 8 C - - C C - R Elmidae 6 C VA R VA A VA VA Ptilodactylidae 8 C R - C - - - Megaloptera(Dobsonflies) Archichauliodes 7 A A - VA A A VA Trichoptera(Caddisflies) Aoteapsyche 4 VA VA C VA VA VA XA Polyplectropus 6 - - A - - - - Hydrobiosis 5 C A R R C A A Psilochorema 6 - - C - - - - Neurochorema 6 - - - - - C R Costachorema 7 R R - R C A C Oxyethira 2 - C - R R C R Pycnocentria 7 - R - R - - R Beraeoptera 8 - - - R - C - Pycnocentrodes 5 - A - C R VA C Confluens 5 - C - C R C R Triplectides 5 - - C - - - - Oeconesidae 5 - - R - - - - Diptera(True Flies) Aphrophila 5 VA A - A A VA C Eriopterini 5 R R R R R - A Paralimnophila 6 - - R - - - - Tanypodinae 5 - R R - - - R Maoridiamesa 3 - R - C A A VA Orthocladiinae 2 A VA C A A A VA Tanytarsini 3 - - - C C C C Chironomus 1 - C - - - - - Austrosimulium 3 C C A R A R R Paradixa 4 - - R - - - - Empididae 3 - - - C C C R Muscidae 3 - R - R R C C Ephydridae 4 - - - - - - R Tanyderidae 4 - C R R - - R Acarina(Mites) Acarina 5 - R A - R - - No. of taxa 17 29 24 27 26 22 29 HBMCI value 118 99 95 104 96 95 93 HBSQMCIs value 6.4 4.8 6.4 6.0 5.5 5.4 4.8 EPT taxa 8 12 9 12 10 10 10 % EPT taxa 47 41 38 44 38 45 34 Tolerant taxa Moderately sensitive taxa Highly sensitive taxa R=Rare C=Common A=Abundant VA=Very Abundant XA=Extremely abundant 5
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Kahouri Stream Monitoring Programme
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Six complaints, which were logged a
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ii 2.7 Recommendations 37 3. Tarana
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iv 6.6.4 Recommendations from the 2
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vi List of tables Table 1 Resource
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Figure 6 Biological oxygen demand (
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Section 11 presents recommendations
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1.2.1 Other resource consents A tot
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Figure 1 Biological and chemical mo
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2. Taranaki Abattoir Co (1992) Limi
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10 Waste liquor and floor washings
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2.2.2 Water discharge permit 12 Sec
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24 March 2005, under Section 87(e)
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16 plant staff were made aware of t
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18 inspection, staff also outlined
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Dissolved oxygen (g/m 3 ) 35 30 25
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Dissolved Reactive Phosphorus (g/m3
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24 In comparing the results (upstre
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26 Biological survey The Council’
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SQMCIs Value 7 6 5 4 3 2 1 0 A C E
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2.6 Discussion 2.6.1 Discussion of
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Table 7 Summary of performance for
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34 Condition requirement Means of m
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36 1. THAT monitoring of air emissi
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3. Taranaki Galvanizers 3.1 Process
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Special condition 4 defines the mix
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42 underneath the galvanising plant
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NH 4 -N (g/m 3 ) 44 Ammoniacal nitr
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3.4.2 Air 46 Air monitoring in the
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48 Table 14 Summary of performance
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4. Egmont Tanneries Limited 4.1 Pro
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permit was issued by the Taranaki R
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54 An additional inspection was und
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56 Table 16 Results of summer low-f
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58 In the 2006-2007 year, there was
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62 In the case of Egmont Tanneries,
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5.3 Monitoring programme The monito
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66 Water chemistry The chemical wat
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6. Contact Energy Limited (closed p
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72 not suggest that discharges from
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74 7. Contact Energy Limited (CCPS)
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7.3.2 Biomonitoring surveys 76 One
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78 Condition requirement Means of m
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8. Fletcher Concrete & Infrastructu
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8.3.2 Chemical sampling 82 The Tara
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84 The stream at this site had a cl
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8.6.5 Alterations to monitoring pro
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88 what effects the discharge shall
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90 Incidents may be alleged to be a
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10. Water quality in the Kahouri ca
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94 Most MCI scores were similar to
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96 12. Summary of recommendations 1
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NH3 unionised ammonia, normally exp
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Appendix I Resource consents held b
Page 173 and 174: To Job Manager, B Jansma From Scien
Page 175: Figure 1 Biomonitoring sites in the
Page 180 and 181: MCI value 140 120 100 80 60 40 20 0
Page 182 and 183: Site E: Kahouri Stream (KHI000400)
Page 184 and 185: mayflies, elmid beetles, Archichaul
Page 186 and 187: Further downstream at Flint Road, t
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Annual report 2006-2007 - Taranaki Regional Council

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