U:\2021\BM210482_IBo_Waihi_North_Project\Documents\WNP_Freshwater_Report_May_2022\FINAL_Freshwater_Report_FOR DELIVERY_June 2022\FINAL DELIVERED 17 JUNE 2022\WAI-985-000-REP-LC-0007_Rev0_Freshwater_20220621_FINAL.docx (nominal) 1⁰C increase in absolute temperature limits in the former. Further refinement of (local) limits would require normalising to reference sites. Accordingly, NIWA (2013) proposed limits for temperature increments above reference stream high temperatures that may be used instead of absolute limits where appropriate data is available. Table 39: Thermal growth optimum predicted from the upper lethal temperatures (acclimation temperature 15°C or 16°C for species marked *). From ARC 2012. Common name Scientific name Life stage Upper lethal temperature Predicted growth optimum Shortfin eel Anguilla australis Elver 35.7 29.0 Shortfin eel Anguilla australis Adult 39.7 34.2 Longfin eel Anguilla dieffenbachii Elver 34.8 27.8 Longfin eel Anguilla dieffenbachii Adult 37.3 31.0 Cran's bully Gobiomorphus basalis Mixture 30.9 22.6 Common bully Gobiomorphus cotidianus Mixture 30.9 22.6 Torrent fish Cheimarrichthys fosteri Adult 30.0 21.4 Inanga Galaxias maculatus Adult 30.8 22.5 Giant kokopu Galaxias argenteus* Whitebait 30.0 21.4 Banded kokopu Galaxias fasciatus Adult 28.5 19.5 Koaro Galaxias brevipinnis* Juvenile 28.0 18.8 Common smelt Retropinna retropinna Adult 28.3 19.2 Figure 30: Summary of thermal toleranceof nativefish andmacroinvertebratesas expressed by critical thermal maxima(CTM- red), thermal preferences(blue),upper incipientlethal temperature(UILT– green) andbehavioural and developmentaleffects(orange). From ARC (2012).
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