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Aquatic invertebrate communities and functional indicators along the lower Waikato River

TR201402

Report: TR 2014/02

Author: Kevin J Collier, Mark P Hamer

About this report

This report details the results of aquatic invertebrate sampling across 22 transects spanning the Waikato River from Hamilton to Mercer, and cotton strip decay and river metabolism measurements around discharges from (1) city, dairy factory meat processing waste water treatment plants (organic), (2) Waipa River (sediment) and (3) Huntly Power Station (thermal).

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Aquatic invertebrate communities and functional indicators along the lower Waikato River [PDF, 1.5 MB]

Contents
1 Introduction
2 Sampling sites
3 Methods
3.1 Physicochemical measurements
3.2 Functional measurements
3.2.1 Ecosystem metabolism
3.2.2 Cotton tensile strength loss
3.3 Invertebrate samples
3.3.1 Sample collection
3.3.2 Sample analysis
3.4 Statistical analyses
Results and Discussion 
4.1 Stressor characterisation
4.2 Functional measurements
4.2.1 Ecosystem metabolism
4.2.2 Cotton strip decay
4.3 Macroinvertebrate communities
4.3.1 Spatial patterns of Invertebrate community composition
4.3.2 Macroinvertebrate responses to stressors
5 Conclusions
  References
  Appendix 1
  Appendix 2
  Appendix 3