Lineage Scientific methodology. Commercial Fishing Restrictions of New Zealand

Transcription

1 To view this as a map and many more go to: web mapping tool Type the map name into: Search for a map layer or place Lineage Scientific methodology Commercial Fishing Restrictions of New Zealand Introduction This data contains the Fishing Restrictions for a specific fisheries management region. This data was loosely based upon mapping undertaken by the Department of Conservation as published December 2004 in Area-based restrictions in the New Zealand marine environment, it has been updated and Quality Assured. 1.1 Associated Regulations Fisheries (Auckland and Kermadecs Commercial Fishing) Regulations 1986 Fisheries (Challenger Area Commercial Fishing) Regulations 1986 Fisheries (Central Area Commercial Fishing) Regulations 1986 Fisheries (Southeast Area Commercial Fishing) Regulations 1986 Fisheries (Southland and Sub-Antarctic Areas Commercial Fishing) Regulations 1991 NOTE It is possible that additional commercial fishing restrictions within New Zealand s exclusive economic zone may exist. This data set does not include provisions from regional coastal plans prepared by regional councils under the Resource Management Act. Also see; Seamount closures these are a subset from the area commercial restrictions Inland waters these are a subset from the area commercial restrictions Attribute Details MFISH_ID Unique ID Description Description of Layer Identifier Restriction code as defined in the Area-based restrictions in the New Zealand marine environment report General_Location Location as described in the Regulation SectionRef The section in the regulation in which this particular restriction is contained. RuleRef The rule in the regulation in which this particular restriction is contained.

2 The sub rule in the regulation in which this particular restriction is contained. Can only be OK, or _Note Notes specific to an issue or error Legal_Instrument Legal document that contains the fishing restriction Alert Is indicated from 0 to 3 with 0= no alert, 1=minimum alert, 2=medium alert, 3=high alert MappingNote Any specifics that were used during mapping RestrictionDescription1 Relates to the first SectionRef, RuleRef and RestrictionDescription2 Relates to the second SectionRef, RuleRef and RestrictionDescription3 Relates to the third SectionRef, RuleRef and RestrictionDescription4 Relates to the fourth SectionRef, RuleRef and RestrictionDescription5 Relates to the fifth SectionRef, RuleRef and RestrictionDescription6 Relates to the sixth SectionRef, RuleRef and RestrictionDescription7 Relates to the seventh SectionRef, RuleRef and RestrictionDescription8 Relates to the eighth SectionRef, RuleRef and RestrictionDescription9 Relates to the ninth SectionRef, RuleRef and RestrictionDescription10 Relates to the tenth SectionRef, RuleRef and Layer_ID NABIS unique ID for the layer Basket_Title What logical group the layer fits into Area_km2 Area of restriction to the nearest 10km2 Positional_Accuracy Approximate accuracy of the data capture Attribute Methodology Identifier FRC = Fishing Restriction Commercial FRA = Fishing Restriction Amateur Section Rule and sub Rule References One polygon area may contain more than one restriction. If the attributes; SectionRef, RuleRef and contain more than one reference, then there is more than one fishing restriction associated with that particular area. The first reference refers to the first restriction description; the second reference refers to the second restriction description and so on. Unless there are more than 256 characters used to describe the fishing restriction and it will be truncated and added into the subsequent column, with ending the first part and beginning the second part. The sequence of restriction description will then be out of synch with the SectionRef, RuleRef and SUbRuleRef columns. For example:

3 This indicates the part of the regulation that the restriction is described in. There can be more than one entry where the area restriction polygon area is an exact spatial match. The order of entries into the field must coincide, for example: The first SectionRef, RuleRef, = RestrictionDescription1 and the second SectionRef, RuleRef and = RestrictionDescription2 e.t.c. Example: SectionRe f RuleRef SubRuleR ef RestrictionDescription1 RestrictionDescription2 3A 7 [] (2) (b)(i) (c) Set net restriction Cray pot prohibition 4 12 (3) [] (i) [] Trawling restriction Seine net restriction 5 (4) [] No fisher may set a set 3A (b)(i) = Set net restriction 7 2 (c) = Cray pot prohibition 4 (3)(i) = Trawling restriction 12 = Seine net restriction 5(4) = No fisher may set a set net unless they stay with the net ABBREVIATIONS: [] = null Sch; defined in the Schedule Interp; defined in the Interpretation Gazette; defined in a gazette notice net unless they stay with the net Must equal OK, or where: _Notes: OK means there is no obvious spatial error found with the restriction. means there is a problem with the description which means the area is not closed as intended, such as a coordinate error or failure to include a coordinate. is where the closure description could be enhanced. For example where there is a similar but not exact closure. The coordinate point table could contain error but if the area restriction closure is still effective then this is deemed an issue. Required only when = or =. The list below describes some common errors/issues. The _Notes field is always populated if the field is equal to error or issue. / Type entry field _Notes entry Example

4 / Type The coordinate describes a location point described else where in the Regulations but the coordinates are different. entry field _Notes entry Same name different coordinates Example Area closed but not exactly as intended e.g. May overlap peninsular into next bay. Ambiguous extent When compared to a similar restriction area there appears to be different spatial definition - especially a harbour entrance or river mouth. Closure variance Manukau Entrance Harbour An overlap in restriction area for a similar type of restriction e.g. Purse Seine Location cannot be found near coordinates but coordinates appear correct Same name different coordinates but not a harbour/fiord or Sound No coordinate or direction to measure distance or buffer from. E.g. 4nm off Maunganui bluff does this mean north east west or south? Coordinate a distance from intended location. Indicated in detail in the coordinate table. Regulation issue Coordinate/location mismatch Coordinate issues Ambiguous description Coordinate error Not yet assessed

5 / Type One or both coordinates do not allow the entrance of a Harbour, Fiord, bay or sound to be sufficiently closed NZMG not WGS84, usually 200m difference N/S and 10m E/W Coordinate points have been omitted so that the harbour, bay or area is not fully closed. Cannot map the restriction area correctly as the reference files do not exist E.g. Mean Low Water Spring or bobs beacon no longer exists Or Foreshore is not defined in Regulations or Act entry field _Notes entry Coordinate error entrance not closed Coordinate error projection translation Area not closed Undefined reference Example MappingNote EXAMPLES: Dependant on Territorial Sea boundary Dependant on EEZ Topographic vector coast used in boundary as MHW, buffered using 60 segments per circle. Defined area contains no coastal boundaries Used section 6(a) to close Harbour entrance Dependant on Rivers from the NZMS260 vector data Dependant on River and Lakes created from the NZMS260 vector data Dependant on DOC National Parks layer Used trig and Topographic 260 raster maps to capture the area. MHW estimated. Territorial Sea used in boundary, buffered using 60 segments per circle.

6 Mapping Detail The fishing restrictions were derived using the legal descriptions in the appropriate statutory regulation. The boundaries of individual restrictive provisions were mapped using coordinates (latitude, longitude), LINZ NZMS260 Topographic coast 2005, LINZ EEZ, LINZ Territorial Sea, all are defined in WGS84. Location descriptions where also used when coordinate descriptions we inappropriate or undefined. 1.2 Mapping Methodology Mapping is captured and displayed in WGS84 decimal degrees (lat/long). One polygon area may contain more than one restriction (see Attribute methodology 2.1 above for details). Geographic coordinates listed in the legal descriptions have been plotted only where there was no obvious alternative way to define the point in question (e.g.: landmark). Where buffering has been required to define a boundary, this has been carried out by computation with outer boundaries generalized using 60 segments per circle. Rocks, islands and islets have not been removed from mapped areas. Areas were calculated in km2 using a Spherical Area Projection (area maintained) and are rounded where possible to the nearest 10km. The calculation relates to the area of the restriction that covers the ocean, no islands are included. Where inland waters are included as part of the restriction then these are not included as part of the calculation. The coastline used for mapping of all restricted areas was the Mean High Water coastline extracted from LINZ 1:50k NZMS260 Topographic Where EEZ and/or territorial water boundaries form part of a defined restricted area, the boundaries used are as supplied by LINZ. References Department of Conservation, 2004, Area-based restrictions in the New Zealand marine environment. Report prepared by Victoria A. Froude with mapping by Roger Smith.