Application 124771 - Ministry of Fisheries

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CAWTHRON INSTITUTE | REPORT NO. 2134 MAY 2012 1. BACKGROUND In August 2011, a collective of inshore mussel farmers from Coromandel approached Cawthron Institute (Cawthron) to provide baseline benthic assessments of effects, as a part of their applications for 1 ha extensions to their mussel farms. These ‘baseline’ assessments and their structure are detailed in the Waikato Regional Council (WRC) Draft Coastal Plan. However, many of the farms in question had recently been issued with off-site and over-size notices by WRC and in most cases the extensions being applied for were already being farmed. Consequently, it was not possible to provide true ‘pre-impact’ baseline data for the proposed extensions. Following liaison with WRC, it was agreed that full baseline surveys for each extension would be unproductive and instead a rationalised approach should be used to fulfil the requirements of the Coastal Plan. To accomplish this, a wider-scale assessment programme was agreed upon by WRC, Cawthron and the collective of farmers, whereby eight representative ‘reference’ farms (Table 1) were selected for full benthic and water column assessments to provide an indication of the effects of mussel farms, and six ‘control’ sites were selected to provide a ‘baseline’ or ‘background’ assessment of the unfarmed benthic and water column environments. The reference farms and control sites were chosen to span the majority of the inshore mussel farm region along on the western side of the Coromandel Peninsula from Wilsons Bay to Colville Bay (Figure 1). This report summarises the results from this wider-scale assessment and individual farm extension reports are appended to this document. 1
MAY 2012 REPORT NO. 2134 | CAWTHRON INSTITUTE 2 Key Hauraki Gulf Firth of Thames Reference farms Control sites Motukahaua Island Other marine farms Moturua Island Farm 1 Farm 3 Farm 6 Control 4 Farm 8 Motuwi Island Control 1 Farm 7 Control 2 Control 6 Wilson Bay Farm 2 Control 3 Control 5 Colville Bay Farm 5 Farm 4 Coromandel Harbour Coromandel Peninsula Sugarloaf Wharf Te Kouma Harbour Manaia Harbour Ü Farm 1 - Li 396 Farm 2 - Li 292 Farm 3 - Li 346 Farm 4 - Li 296 Farm 5 - Li 380 Farm 6 - Li 362 Farm 7 - Li 379 Farm 8 - Li 344 0 1.25 2.5 5 7.5 10 km Figure 1. Map showing the eight reference farm sites (red) and the six control sites (blue) used in the wider assessment of benthic and water column effects.
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To: Waikato Regional Council Privat
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Contents 2 Contents ...............
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4 marine farm (which expires on 1 J
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6 2011) identified that the aquacul
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8 Goodwin E, 2012. Assessment of Be
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10 4.5.8 The capacity of the wharf
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12 in Appendix 1 and designed in ac
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7. Relevant Planning Provisions 14
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16 the applicant is a member of the
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7.18 Policy 6.1.3 - (Integrated Man
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Appendix 1: Survey plan showing loc
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REPORT NO. 2167 COROMANDEL MUSSEL F
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Application 124771 - Ministry of Fisheries

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