River and stream water quality and ecology - Greater Wellington ...

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River and stream water quality and ecology in the Wellington region: State and trends 4. Continue to address existing knowledge gaps around the effects of specific activities on river and stream health in the Wellington region (eg, instream works) and the sources of high nutrient or sediment inputs to some streams using targeted, catchment-based monitoring and investigations. 5. Continue Greater Wellington’s existing soil conservation programmes to reduce soil erosion across the region’s erosion-prone hill country. 6. Promote further riparian rehabilitation in small degraded or ‘at risk’ stream catchments most likely to benefit from riparian revegetation and continue with existing initiatives to remove physical barriers to native fish migration. 7. Take into account the findings of this report in the review of Greater Wellington’s existing regional plans, particularly the need to address: Nutrient losses (both nitrogen and phosphorus) from intensive rural land uses, such as dairying and horticulture; Microbiological and nutrient contamination from municipal wastewater discharges, stock access to streams and, in urban areas, sewer/stormwater cross connections, leaks and overflows; Land use practices and activities that contribute significant sediment inputs to rivers and streams, particularly stock access to waterways and riparian margins, forestry, and bulk earthworks associated with urban and roading developments; The effects of urban stormwater discharges on the region’s rivers and streams; and Activities in urban and rural areas that degrade instream habitat, such as stream realignment, water abstraction and removal of riparian vegetation. WGN_DOCS-#1100598-V3 PAGE 119 OF 160
River and stream water quality and ecology in the Wellington region: State and trends References Allibone R, David B, Hitchmough R, Jellyman D, Ling N, Ravenscroft P and Waters J. 2010. Conservation status of New Zealand freshwater fish, 2009. New Zealand Journal of Marine and Freshwater Research, 44: 1–17. Atkinson N. 2008. Rites of passage: Biotic and abiotic influences on freshwater fish migration. MSc thesis. Massey University, Palmerston North. Ausseil O. 2011. Nutrient status of rivers and streams in the Wellington region: An analysis of state of the environment monitoring data. Report prepared for Greater Wellington Regional Council by Aquanet Consulting Ltd, Palmerston North. Ausseil A. In prep. (a). Recommended biological and water quality limits for trout fishery and trout spawning waters in the Wellington region. Report prepared by Aquanet Consulting Ltd for Greater Wellington Regional Council. Ausseil A. In prep. (b). Recommended biological and water quality limits for rivers and streams managed for contact recreation, amenity and stock drinking water in the Wellington region. Report prepared by Aquanet Consulting Ltd for Greater Wellington Regional Council. Ausseil A. In prep. (c). Recommended water quality limits for rivers and streams managed for Aquatic Ecosystem Health in the Wellington region. Report prepared by Aquanet Consulting Ltd for Greater Wellington Regional Council. Ausseil A. In prep. (d). Recommended in-stream nutrient limits for rivers and streams in the Wellington region. Report prepared by Aquanet Consulting Ltd for Greater Wellington Regional Council. Australian and New Zealand Environment and Conservation Council (ANZECC). 1992. Australian water quality guidelines for fresh and marine waters. National Water Quality Management Strategy Paper No. 4, Australian and New Zealand Environment and Conservation Council, Canberra. Australian and New Zealand Environment and Conservation Council (ANZECC). 2000. Australian and New Zealand guidelines for fresh and marine water quality, volume 1, the guidelines. Agriculture and Resource Management Councils of Australia and New Zealand, Canberrra. Ballantine D and Booker D. 2011. Greater Wellington State of Environment river water quality data assessment and trend analysis (2003-2010). Report No. HAM2011-126 prepared for Greater Wellington Regional Council by NIWA, Hamilton. Ballantine D, Booker D, Unwin M and Snelder T. 2010. Analysis of national river water quality data for the period 1998–2007. Report No. CHC2010-038 prepared for the Ministry for the Environment by NIWA, Christchurch. Ballantine D and Davies-Colley R. 2010. Water quality trends at NRWQN sites for the period 1989–2007. Report No. HAM2009-026 prepared for the Ministry of the Environment by NIWA, Hamilton. PAGE 120 OF 160 WGN_DOCS-#1100598-V3
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River and stream water quality and
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DISCLAIMER This report has been pre
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observed trends were unclear. The p
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5. Periphyton - state and trends 57
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