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Aquatic Health
Characterising a catchment and relating it to the biodiversity of the aquatic receiving environment is one way of determining the efficacy of LIUDD approaches, at least in terms of aquatic health of the catchment. The presence (or absence) of various aquatic invertebrates in streams can indicate the 'health' of the stream and assist in determining a trajectory of recovery or decline.
New research
- A close-up look at biological indicators of the effects of urban land use on Auckland streams (this page)
- Analysis of the ecological efficacy of LIUDD on a catchment scale
Landcare Research Contract Reports [available from Landcare Research Library, Lincoln, subject to client approval]
Recent Publications
Trowsdale S. 2006. The process of quadruple-bottom-line integrated catchment management planning: Project Twin Streams. Landcare Research Contract Report LC0607/033. Prepared for Waitakere City Council.
Trowsdale S, Miguel T. 2006.
Project Twin Streams: Water Quality.
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Poster.
van Roon M, Greenaway A, Dixon J, Eason C. 2006.
LIUDD NZ, Buy in.
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Urban Drainage Modelling and Water Sensitive Urban Design, 3-7 April 2006, Melbourne.
Moore S. 2005. Use of freshwater life to assess effects of landuse on receiving water ecosystems in Brunei, and how many of the same principles apply in New Zealand. Presented to joint NZ Freshwater Sciences and Ecological Society conference, Napier.
Moore S. 2005. [Poster]Using of aquatic life to illustrate the effects of urbanisation(including stormwater discharges)on stream ecosystems . 4th South Pacific Stormwater Conference on Stormwater and Aquatic Resource Protection. NZ Water and Wastes Association, 4-6 May 2005, Auckland.
Recent Presentations
Moore S 2008.
The effects of urban development on Auckland streams
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Presentation at New Zealand Freshwater Sciences Conference, 2008
Moore S 2003. [Oral presentation]: Capturing invertebrate images with AutoMontage - an identification tool [Poster presentation]: Strategies for low impact uran design. NZ-Australian Limnology Conference, Dec 2003, Warrnambool, Victoria, Australia
van Roon M 2003.
urban form, planning and policy, stormwater, terrestrial ecology, aquatic ecology and catchment management
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Posters from Melbourne stormwater conference 2003
Links
New Zealand
- Images of freshwater invertebrates of New Zealand
- A photographic guide to the freshwater invertebrates in New Zealand
- NIWA – quick guides to freshwater flora & fauna
- Review of the status, distribution, and conservation of freshwater invertebrates in New Zealand – paper by Kevin Collier
- Department of Conservation – threatened invertebrates
A close-up look at biological indicators in Auckland urban streams
Objectives
- To list the invertebrate groups ('taxa') found most frequently in Auckland lowland streams
- To identify which of the known 'sensitive' invertebrate taxa are likely to be useful indicators of 'healthy' Auckland lowland streams
- To identify those invertebrate taxa that appear to be most 'tolerant' or most 'intolerant' of the effects of urbanisation
Data sources
- Rural stream biological data was compiled from 18 'Assessment of Environmental Effects' surveys, involving 76 sampling sites (Harrison Grierson Consultants and Landcare Research surveys)
- Urban stream biological data was obtained from a survey of 64 urban streams undertaken by NIWA for the Auckland Regional Council
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| Clean, moderate- to fast-flowing, stony, shaded, cold water streams | ||
| Zephlebia mayfly – high dissolved oxygen |
Austroperla stonefly – cool water, high dissolved oxygen |
Acroperla stonefly – high dissolved oxygen |
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| Olinga caddis – high dissolved oxygen |
Orthopsyche caddis – high dissolved oxygen |
Latia luminescent limpet – clean stony beds |
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Clean, slow to moderately flowing, woody or weedy beds, water temperature cooled by shading |
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| Antipodochlora dragonfly – clear water |
Psilochorema caddis – high dissolved oxygen |
Polyplectropus caddis – high dissolved oxygen |
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| Triplectides caddis – high dissolved oxygen |
Paranephrops crayfish – high dissolved oxygen |
Paraleptamphopus amphipod – weedy streams |
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| Slow-flowing, silty, contaminated, unshaded (warm in summer), waters with low dissolved oxygen | ||
| Physa introduced snail – nutrient-enriched water |
Potamopyrgus snail covered in iron oxide | Oligochaete worms – silty habitats |
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| Chironomus midge – low-oxygen water |
Oxyethira caddis – algae-covered streambeds |
Ostracod seed shrimp – silty habitats |
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Effects of urban land use on Auckland stream ecology |
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| Aspects of urban development that detrimentally affect aquatic life | ||
| Loss of habitat variablilty, loss of vegetation cover | Disturbance of streambeds, fine- sediment inputs | Removal of aquatic and bankside vegetation (habitat) |
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| Piping streams creates barriers and destroys habitats | Installing culverts with waterfalls blocks fish passage | Illegal discharges of contaminants cause many fish kills |
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| Species that may increase in abundance as streams become urbanised | ||
| Physa introduced snail – nutrient-enriched water |
Chironomus midge – tolerate low-oxygen water |
Xanthocnemis damselflies – generalists |
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| Muscid flies – tolerant of poor water quality |
Paratya shrimps – graze on algae in enriched streams |
Mosquito fish – thrive in stormwater treatment ponds |
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| Species that tend to decline in abundance as streams become urbanised | ||
| Banded kokopu – need clear water and good cover |
Paranephrops crayfish – need abundant cover |
Polyplectropus caddis – need high dissolved oxygen |
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| Acroperla stoneflies – need cool water and high dissolved oxygen |
Austrolestes damselflies – prefer rural weedy streams |
Paraleptamphopus amphipods – prefer rural weedy streams |
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Contact
 | Stephen Moore Email  |
Landcare Research | |
Phone: +64 9 574 4100 | |
| Details: Stephen Moore |
