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FROM FARMS TO CATCHMENTS: Restoring the big picture. AORERE. The river & surrounds. 706 km 2 Short steep river 72km 80% native forest, 16% agriculture, 3% scrub, 1% exotic forest 33 farms: 11,000 - 13,500 cows. Issues. $15M shellfish industry E.Coli contamination - PowerPoint PPT Presentation
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FROM FARMS TO CATCHMENTS:
Restoring the big picture
AORERE
• 706 km2
• Short steep river 72km• 80% native forest, 16% agriculture,
3% scrub, 1% exotic forest• 33 farms: 11,000 - 13,500 cows
The river & surrounds
• $15M shellfish industry• E.Coli contamination• Annual harvest low as 30%• E.coli due to pasture runoff
How to farm without preventing shellfish harvesting?
Issues
• Aorere Catchment Group• Project management, facilitation,
science coordination - NZLT• Partners - Fonterra, Dairy NZ,
AgResearch, TDC
The project
• Modeling nutrient & pathogen impacts from land use
• Results presented to marine farmers, dairy farmers and TDC
• E.coli = key contaminant
Pathways
Plume model
• Farm interviews• “Handling the Wet” field-day• BMPs for E.coli management• Individual farm plans
Actions
Successes• 14 farm plans completed• $1.4M of BMP improvements
identified over next 5 years• Shellfish harvesting 30% to 71%
TUNAWHAKAHEKE / E
• Lake ~6ha, catchment 100ha• Shallow (0.4 - 0.7m), hypertrophic• Conservation & recreational values • Private (33%) & DOC Wildlife
Management Reserve (66%)
The lake & surrounds
• Peat shrinkage
• Loss of open water habitat
• Aquatic weeds & pest fish
• Damage from livestock
• Nutrient enrichment of lake
Issues
• Project coordination - NZLT• Partners – Heritage Valley Farm &
Whakatanga Farm, DOC, WRC (EW)
• Contractors - Alison Dewes (Whole Farm Plans), JP Praat (Catchment Plan)
The project
Plans (1)
Nutrient Budget
Nutrient Mgt Plan
Whole Farm Plan
What’s in a plan?NMP WFPNutrient focus
N, P, sediment & effluent use
No Farm System changes/effects
No Economics
$2000-2500
System, whole farm effects & business profit
N, P , sediment, effluent & receiving environment
Farm System & profit changes
$3500-$4000
Plans (2)
Nutrient Budget
Nutrient Mgt Plan
Whole Farm Plan
Catchment Plan
1. Matching landuse to underlying land capability
2. Understanding property resources
3. Identifying win-win approaches
4. Formalise long term business and land management goals
Catchment Plan
Action plan mapAction plan summaries
Actions map
What are the key ingredients for success?