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Developing a Fisheries plan 4. Decide on management measures and develop operational plan 1. Describe the current situation 2. Develop management objectives 3. Assess the fishery
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West Coast Fisheries Plan - Current Situation Health of the aquatic environment is protected; People realise best value from sustainable and efficient use of resources; Credible fisheries management
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Health of the aquatic environment is protected North West Coast Marine Environment Managing for Maximum Sustainable Yields Biodiversity Benthic impacts Spirits Bay Sponges Habitats of Particular Significance to Fisheries Management Associated or Dependent Species Protected Species Bycatch Species Other Resource Users
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NW Coast Marine Environment Exposed sandy beaches; Rocky bluffs and outcrops; Offshore gravels and iron sands; Several harbours; Areas of special interest – Sugar Loaf and Gannet islands, Cape Reinga sponges
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Providing for Utilisation while Ensuring Sustainability FA s13, stocks to be managed at or above a level that produces maximum sustainable yield; Achieved by management measures of all kinds that balance sustainability and utilisation; Biological characteristics and indices of abundance help determine management strategies for individual NIWC species;
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Biological characteristics that influence species productivity Natural mortality/age at maturity/ growth rates; Fecundity Recruitment; Juvenile (fishing) mortality; Distribution; Fast growing, short-lived, high natural mortality – ongoing fluctuations. Less vulnerable to fishing pressure. (Also mullet) Slow growth, late maturity, low fecundity. Vulnerable to over fishing but stable populations (Also rig, snapper, kahawai). Slow growth, late maturity,, longer-lived, most vulnerable to overfishing (also tarakihi, probably hapuku).
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Biodiversity FA 1996 – biological diversity of aquatic environment should be maintained
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Benthic Impacts Impacts on animals and plants living on, or attached to the seabed from MHW to deepest level
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Spirits Bay Sponges Diverse sponge and byrozoan communities, corals, probably black corals, wide variety of invertebrates with sub-tropical affinity; Possible impacts of trawling, scallop dredging on benthic environment
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Significant habitats for fisheries management FA 96 requires protection of areas important in parts of lifecycles of some fish species, and of habitat of rare species and those vulnerable to some fishing methods; Important west coast habitats: - Spawning and recruitment areas, - estuaries, - migratory routes, - areas with high biodiversity
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Maui’s dolphin Advice being prepared for Minister on Treat management Plan issues and related submissions from stakeholders; Main issues: - does dolphin range extend to harbours? - are trawlers operating in the region where there are dolphins a threat? - is set and drift netting at Port Waikato a threat?
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Associated or dependent species FA 96 requires that associated or dependent species are maintained above a level that ensures their long- term viability; Defined as any species not intended to be caught that are taken or affected in some way by catching of target species West coast protected species: - dolphins, - seabirds, - turtles, - black coral, - spotted groper - white pointer Fishing activities must be done in ways that as far as possible avoid catching or harming these species
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Bycatch All target WCNI fisheries take high proportion of bycatch By catch species include: barracouta, kahawai, school shark, rig jack mackerel; Target grey mullet, flatfish, rig and school shark set net fisheries take 100 – 150 bycatch species; Snapper, trevally red gurnard mixed fishery;
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Other resource uses Marine farming – Kaipara Harbour oyster farms Sand and oil extraction; Trans Tasman cable; Sedimentation due to land use
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