Layer: Bio-Vegetation Area (ID: 85)

Parent Layer: Natural Environmental Values

Name: Bio-Vegetation Area

Display Field: LCDB2_NAME

Type: Feature Layer

Geometry Type: esriGeometryPolygon

Description: <DIV STYLE="text-align:Left;"><DIV><DIV>The dataset currently contains mapped polygons representing terrestrial vegetation, palustrine wetlands (degraded and non-degraded) of the Rotorua District within Waikato Regional Council boundary. The data set was digitised off the 2012 WRAPS orthophotography using a slightly simplified version of the LCDB1 and 2 classifications by an experienced land use classifier. The capture scale for digitising was 1:10,000 although the imagery may have been used at up to 1:5,000 for classifying polygons. Despite this the recommended scale of use is no greater than 1:10,000 (see section 5 below).The LCDB classifications were used because a survey of potential data set users at Waikato Regional Council found the classification adequate to meet most users’ needs and also because it was the most nationally consistent land use/cover classification available at the time. It is acknowledged that there are many other vegetation classifications out there (such as Leathwick et al(1995), Atkinson (1962) and Nicholls (1976)) that may be more suitable and/or detailed for some users such as ecologists but the goal of this project was to create a data set that had strong temporal and spatial consistency, was easily recognised nationwide and that met the needs of most users.For all districts only vegetation classes relevant to regional terrestrial vegetation and wetland biodiversity prioritisation were mapped. The classes are:<TABLE><TBODY><TR><TD>Generalised Vegetation Group (GEN_VEG)</TD><TD>LCDB1 Name</TD><TD>LCDB2 Name</TD></TR><TR><TD>Predominantly Indigenous</TD><TD ROWSPAN="8">Shrubland</TD><TD>Flaxland</TD></TR><TR><TD>Predominantly Indigenous</TD><TD>Fernland1</TD></TR><TR><TD>Predominantly Exotic</TD><TD>Gorse and Broom</TD></TR><TR><TD>Predominantly Indigenous</TD><TD>Manuka and or Kanuka</TD></TR><TR><TD>Predominantly Indigenous</TD><TD>Broadleaved Indigenous Hardwoods1</TD></TR><TR><TD>Predominantly Indigenous</TD><TD>Sub Alpine Shrubland</TD></TR><TR><TD>Predominantly Exotic</TD><TD>Mixed Exotic Shrubland2</TD></TR><TR><TD>Predominantly Indigenous</TD><TD>Grey Scrub</TD></TR><TR><TD>Predominantly Exotic</TD><TD ROWSPAN="5">Planted Forest</TD><TD>Afforestation (not imaged)3, 4</TD></TR><TR><TD>Predominantly Exotic</TD><TD>Forest Harvested4, 5</TD></TR><TR><TD>Predominantly Exotic</TD><TD>Pine Forest – Closed Canopy</TD></TR><TR><TD>Predominantly Exotic</TD><TD>Pine Forest – Open Canopy6</TD></TR><TR><TD>Predominantly Exotic</TD><TD>Other Exotic Forest2</TD></TR><TR><TD>Predominantly Exotic(note this class is captured in SNA as pred.indig.)</TD><TD>Exotic Hardwoods</TD><TD>Deciduous Hardwoods</TD></TR><TR><TD>Predominantly Indigenous</TD><TD>Indigenous Forest</TD><TD>Indigenous Forest</TD></TR><TR><TD>Predominantly Indigenous</TD><TD>Mangrove7</TD><TD>Mangrove7</TD></TR><TR><TD>Mixed Indigenous and Exotic</TD><TD>Inland Wetland</TD><TD>Herbaceous Freshwater Vegetation</TD></TR><TR><TD>Mixed Indigenous and Exotic</TD><TD>Coastal Wetland7</TD><TD>Herbaceous Saline Vegetation7</TD></TR><TR><TD>Predominantly Indigenous</TD><TD>Bare Ground</TD><TD>Alpine Grass-/Herbfield</TD></TR><TR><TD>Mixed Indigenous and Exotic</TD><TD ROWSPAN="2">Coastal Sand</TD><TD>Sand Dunes8</TD></TR><TR><TD>Mixed Indigenous and Exotic</TD><TD>Sand Dunes – Highly Modified8</TD></TR><TR><TD>Mixed Indigenous and Exotic</TD><TD ROWSPAN="2">Tussock Grassland</TD><TD>Tall Tussock Grassland</TD></TR><TR><TD>Mixed Indigenous and Exotic</TD><TD>Depleted Tussock Grassland</TD></TR></TBODY></TABLE>1Fernland includes areas of dominant Pteridum esculentum(Bracken Fern), Gleichenia species(Umbrella Fern) amd Paesia scaberula(Ring Fern). It is important to note that in the bioveg mapping project Fernland also includes trunk forming Tree Ferns (Pongas) (e.g. Cyathea dealbata(Silver Fern), Cyathea medullaris(Black Tree Fern), Cyathea smithii(Soft Tree Fern), Dicksonia fibrosa(Golden Tree Fern) and Dicksonia squarrosa(Wheki Tree Fern)). In LCDB2 the tree ferns group is included in the Broadleaved Indigenous Hardwoods class but the classification deviates here for the purposes of this project.2Not to be confused with each other.3Includes all newly planted forestry that can not be clearlyseen in 2012 WRAPS orthophotography at 1:10,000 scale (usually up to four or five years old), or areas of newly planted forestry that look more like pasture or other vegetation types due to the young age and relatively small extent of the planted trees. Usually this class becomes more evident when viewing the orthophotography at scales of 1:5,000 or greater.4These two classes are missing for Hauraki and Waitomo districts and will be mapped and added to the data if and when time and resources allow.5Also known as “Clearfell”.6This class includes the LCDB2 class of“Afforestation (imaged, post LCDB1)”. This being only forestry that can be clearly seen in 2012 WRAPS orthophotography at 1:10,000 scale (would have to be at least a four or five years old).7Initially only mapped if evident in 2012 WRAPS orthophotography at 1:10,000 scale and notwithinthe boundaries of other estuarine vegetation feature classes that already exist. Estuarine Vegetation data sourced from Waikato Regional Council is being used to append these classes to the data set over time and may be missing for some districts at this stage.8Sand dune classes were added to this classification for mapping for the biodiversity prioritisation project. The classes used are: The descriptions at the equivalent LCDB2 level for these two classes are:Sand Dunes = Sand dunes that are either unmodified or only slightly modified by human activity or are a recovering system. It includes those sand dunes that may contain coastal indigenous or exotic herbaceous vegetation such as Pingao, Spinifex or Marram Grass or appear to be bare sand. The bare sand dunes are included as they may have some coastal indigenous herbaceous vegetation on them but this can not be determined from aerial photography. In terms of dune landforms this class includes incipient and established foredunes, backdunes, parabolic dunes, transgressive dunefields or blowouts (see <A href="http://www.doc.govt.nz/publications/conservation/native-plants/pikao-or-pingao-the-golden-sand-sedge/coastal-sand-dunes-form-and-function/">http://www.doc.govt.nz/publications/conservation/native-plants/pikao-or-pingao-the-golden-sand-sedge/coastal-sand-dunes-form-and-function/</A>for a detailed description of these features). Where a wetland over 0.5 hectares is present amongst sand dunes then that wetland should be mapped as a separate feature. Sand dunes should not be mapped if they are dominated by pasture or woody vegetation. In the case of woody vegetation these features should be mapped as a separate class.Sand Dunes – Highly Modified = Sand dunes that are highly modified by human activity such as mining or earthworks but may still contain coastal indigenous or exotic herbaceous vegetation such as Pingao, Spinifex or Marram Grass or appear to be bare sand. The bare sand dunes are included as they may have some coastal indigenous herbaceous vegetation on them but this can not be determined from aerial photography. In terms of dune landforms this class includes foredunes, backdunes, parabolic dunes, transgressive dunefields or blowouts (see <A href="http://www.doc.govt.nz/publications/conservation/native-plants/pikao-or-pingao-the-golden-sand-sedge/coastal-sand-dunes-form-and-function/%20">http://www.doc.govt.nz/publications/conservation/native-plants/pikao-or-pingao-the-golden-sand-sedge/coastal-sand-dunes-form-and-function/</A>for a detailed description of these features). Where a wetland over 0.5 hectares is present amongst sand dunes then that wetland should be mapped as a separate feature. Can include areas of newly planted forestry (usually less than 2 years old) where the sand is still the dominant land cover. Sand dunes should not be mapped if they are dominated by pasture or woody vegetation. In the case of woody vegetation these features should be mapped as a separate class.LCDB2 classes that are not mapped are:<TABLE><TBODY><TR><TD>LCDB1 Name</TD><TD>LCDB2 Name</TD></TR><TR><TD>Urban Open Space</TD><TD>Urban Parkland/Open Space</TD></TR><TR><TD ROWSPAN="3">Primarily Horticulture</TD><TD>Short-rotation Cropland</TD></TR><TR><TD>Vineyard</TD></TR><TR><TD>Orchard and Other Perennial Crops</TD></TR><TR><TD ROWSPAN="2">Primarily Pastoral</TD><TD>High Producing Exotic Grassland</TD></TR><TR><TD>Low Producing Grassland</TD></TR><TR><TD>Not Mapped</TD><TD>Minor Shelterbelts</TD></TR><TR><TD>Major Shelterbelts</TD><TD>Major Shelterbelts</TD></TR></TBODY></TABLE>Some users (such as biosecurity or some environmental scientists) may require these “non-mapped” classes to be mapped. If so this will have to be done as a separate project.The descriptions of the land use classes can be found in the New Zealand Land Cover Database Version 2 - Illustrated Guide to Target Classes Parts 1 and 2 (EW Docs # 1147074 and 1147076).Attributes used in the GIS data set are:LCDB2_NAME: The dominant (at least 51% of area) LCDB2 class in a polygon or “Estuarine Veg Extraction” where shapes have been added from the GIS_ALL.ESTUARINE_VEGETATION layerLCDB1_NAME: The dominant (at least 51% of area) LCDB1 class in a polygon.GEN_VEG: The generalised vegetation group (Predominantly Indigenous; Mixed Indigenous and Exotic; Predominantly Exotic; Uncertain or Boggy Pasture) assigned to the polygon by the Council. This is derived by running a nested IF functional attribute query on the LCDB2_NAME attribute. The query expression is recorded in section 4 below.WETLAND: Is the polygon wetland or contain wetland? (Yes/Null)ESTUARINE_VEG_TYPEIs the VEG_TYPE field copied across from the GIS_ALL.ESTUARINE_VEGETATION layer where applicableMINOR_CLSA: A minor LCDB2 class also found within the boundaries of the polygon.MINOR_CLSB:A second minor LCDB2 class also found within the boundaries of the polygon.MINOR_CLSC:A third minor LCDB2 class also found within the boundaries of the polygon.UNCERTAIN1:Indicates if the classifier was uncertain about the classification used, the boundary delineated for the polygon, whether the polygon is wetland or not, or a combination of any of these three things.UNCERTAIN2:Indicates if the classifier was uncertain about any, or a combination of any, of the minor classes assigned.COMMENTS:Any comments contributed by the classifier.CLASS_COR: If a polygon was field checked this attribute indicates if the polygon was classified correctly or not. (Yes; Yes (Orginally No); Uncertain; Can not see; Null)BOUND_COR: If a polygon was field checked this attribute indicates if the polygon had its boundary delineated correctly or not. (Yes; Yes (Orginally No); Uncertain; Can not see; Null)WETLD_COR: If a polygon was field checked this attribute indicates if the polygon had a wetland or not. (Yes; Yes (Orginally No); Uncertain; Can not see; Null)FIELD_COM:If a polygon was field checked this attribute allows the field checker to enter any comments if they deemed it necessary.PHOTO_1:An hyperlink to an oblique photo showing the polygon in question when viewed from the field.PHOTO_1_ID: If a photo is taken then this is the ID of the photo.PHOTO_EAST1:The NZTM (begins with a 1) or NZMG (begins with a 2) easting of where photo1 was taken from (some photos only).PHOTO_NTH1:The NZTM (begins with a 5) or NZMG (begins with a 6) northing of where photo1 was taken from (some photos only).PHOTO_2:An sencond hyperlink to an oblique photo showing the polygon in question when viewed from the field.PHOTO_2_ID: If a second photo is taken then this is the ID of the photo.PHOTO_EAST2:The NZTM (begins with a 1) or NZMG (begins with a 2) easting of where photo2 was taken from (some photos only).PHOTO_NTH2:The NZTM (begins with a 5) or NZMG (begins with a 6) northing of where photo2 was taken from (some photos only).DISTRICT: The district within which that polygon lies (polygons that overlap district boundaries are split by those boundaries although these will ultimately be merged together).METADATA: A hyperlink to the metadata document (will only work internally atthe Council).ID:The unique identifier for the polygon.For the purposes of this project “Wetland” areas that are mapped are the palustrine wetlands (permanently or intermittently wet areas withvegetation emergent over shallow or subsurface freshwater, swamps, bogs and marsh – does not include floating plants).It should be noted that some non-mapped classes were mapped if they were identified as being wetland. For example, Low Producing Grassland areas that were identified as being a degraded wetland with some native wetland plants still present were mapped but the only attribute field populated was the “WETLAND” or a “MINOR_CLS” field.Coastal vegetation (Mangroves and Herbaceous Saline Vegetation) is mapped for some areas but for a more comprehensive data set on estuarine vegetation GIS_ALL.ESTUARINE_VEGETATION (DOCS# 628521 for the metadata). There may be gaps in the coastal vegetation data for the Thames-Coromandel and Hauraki Districts.<OL STYLE="margin:0 0 0 0;padding:0 0 0 0;"><LI STYLE="margin:0 0 0 24;">Data Acquisition HistoryPeriod and Frequency of Record: The data set is seen as a relatively accurate version representing terrestrial vegetation and wetland cover as at 2012. It is intended that an equivalent data set will be created every five years or so but this is dependent on resource and budget availability and relevant policy and information requirements.Data Acquisition Methods: Detailed descriptions of the data acquisition methods for the 2002 and 2007 Bioveg versions of the data can be found in the following the Council documents:EW DOCS # Title 1302276 Biodiversity Vegetation (BIOVEG) Mapping Process Summary1315358 Waitomo Bioveg Field Checking - Specifications and Instructions1330719 Specifications for Waitomo Woody Vegetation Classification Revision 20061339659 Specifications for South Waikato District Bioveg Mapping1567467 Bioveg Specifications as at 16/10/091652855 Specifications for Waipa District Bioveg Change Mapping 2002-20071652850 Specifications for Otorohanga District Bioveg Change Mapping 2002-20071714160 Specifications for South Waikato District Bioveg Change Mapping 2002-2007</LI><LI STYLE="margin:0 0 0 24;">Data Quality InformationData Quality:Refer to Specification Documents (see Data Acquistion Methods).Maps or carrying out analysis on this data at any scale greater than 1:10,000 may result in the inaccuracies being much more evident, or obvious errors in the analysis. It is advised data sets derived off this data set also should not be used at any scale greater than 1:10,000.Attribute Accuracy: Shrubland classes and wetland boundaries are especially difficult to map and classify using orthophotography, and errors are more likely to be found in these areas. The difference between Indigenous Forest and Broadleaved Indigenous Hardwoods can be difficult to determine in some areas. Small plantings of Other Exotic Forest in rural areas can often be misinterpreted as Indigenous Forest.Generally the broader the classification that is used the higher the classification accuracy. For example if the data was grouped into two classes such as indigenous versus exotic species or woody vegetation versus non woody vegetation the classification accuracy would be higher than for the LCDB2 or LCDB1 classes alone. Particular classes that the classifier acknowledged as being difficult to classify were shrubland species, mixed exotic forest and wetlands. Shrubland classes and wetland boundaries are especially difficult to map and classify using orthophotography, and errors are more likely to be found in these areas. The difference between Indigenous Forest and Broadleaved Indigenous Hardwoods can be difficult to determine in some areas. Small plantings of Other Exotic Forest in rural areas can often be misinterpreted as Indigenous Forest.Anyone using the data should be aware of the recommended scale of use. Short of having a multi-million dollar budget, it is impossible to achieve 100% accuracy in classifications or to consistently delineate the boundary to within a few meters of where that boundary actually lies on the surface of the earth. The data should be considered indicative only and any use of the data for legal proceedings or purposes should be backed up by field checking of the relevant areas. For this reason the UNCERTAIN1 and UNCERTAIN2 fields were created (see “Content of Data Set” above).Completeness: As at 18/09/2014 the 2012 data is considered 99% complete for Rotorua District. There may be further changes or refinements to the data sets pending current and future Bioveg and SNA contracts and feedback from local authorities and other users. There may be some minor modifications to a few polygons during biodiversity prioritisation work in the future but only when approved by an ecologist doing the work are 100% certain in the change required.Logical Consistency: All the data is from one provider, who created the data set based on detailed specifications provided by Waikato Regional Council. Quality assurance of the data involved several parties but was tightly monitored and controlled by one project leader at Waikato Regional Council. The attributes are considered logically consistent. Any cases of logical inconsistency found are likely a result of error and should be reported to the data set owner.As the data is captured on a district by district basis polygons that overlap district boundaries are currently split by those boundaries. There may be some inconsistencies in classification or boundaries of adjacent polygons that lie on either side of district boundaries (district boundaries can shift based on shifts in the underlying CRS parcel data over time). This issue will be remedied in due course should a merged regional data set be created.</LI><LI STYLE="margin:0 0 0 24;">Distribution InformationData Form: Digital GIS files (Oracle Spatial, GeoMedia Access Warehouse), Shapefile, Mapinfo), hard copy printed and digital (pdf, jpeg, tiff) GIS map outputs at a range of scales.Digital Format: The data was captured in ESRI ArcGIS 10. It was then imported into GeoMedia for quality assurance purposes and is stored as a feature class in an Access Warehouse in GeoMedia. The final data set was exported to Oracle Spatial DB for corporate use (Still to be completed).Data Set Availability: The data set is regarded as public information and freely available but with a cost-recovery on time spent extracting and supplying the data. Users will be provided with this Metadata and be expected to limit use of the data to within the data design specifications documented in this document. It is recommended that users do not pass the data on to third parties but rather direct third parties to Waikato Regional Council to get the data directly from the source or the data can be downloaded from the Council’s Data Download site: http://www.waikatoregion.govt.nz/Environment/Environmental-information/REDI/Data-download/Acknowledgement:The standard Waikato Regional Council disclaimer applies to this data:“While Waikato Regional Council has exercised all reasonable skill and care in controlling the contents of this information, Waikato Regional Council accepts no liability in contract, tort or otherwise howsoever, for any loss, damage, injury or expense (whether direct, indirect or consequential) arising out of the provision of this information or its use by you.”If the data set is used in analysis the following acknowledgment must be used:“Derived from Waikato Regional Council Biodiversity Vegetation (BIOVEG) data dated 2012. Copyright Reserved.”If the data set is used in digital or hard copy maps the following acknowledgment must be used:“Biodiversity Vegetation (BIOVEG) data sourced from Waikato Regional Council dated 2012. Copyright Reserved.”The data should be considered indicative only and any use of the data for legal proceedings or purposes should be backed up by field checking of the relevant areas.Licence:<A href="http://creativecommons.org/licenses/by/3.0/nz/legalcode">Creative Commons Attribution 3.0 New Zealand</A></LI><LI STYLE="margin:0 0 0 24;">Status InformationData Status: The data set is seen as an indicative version representing vegetation cover in the Rotorua District as at 2012. It is possible that the data set may undergo minor modifications in the future based on more accurate feedback and field work. It is intended that an equivalent data set will be created every five years or so for change analysis but this is dependent on resource and budget availability and relevant policy requirements. The methods used for updating the data set may be different depending on technological advancements (such as the use of remote sensing) and resources available. Methods used in the development of this current data set are well documented and will be closely followed in order to achieve consistency between this and future data sets.</LI><LI STYLE="margin:0 0 0 38;">Further Metadata Information</LI></OL>WWW Links:Data download page: <A href="http://www.waikatoregion.govt.nz/Environment/Environmental-information/REDI/Data-download/">http://www.waikatoregion.govt.nz/Environment/Environmental-information/REDI/Data-download/</A>Creative Commons Attribution 3.0 New Zealand <A href="http://creativecommons.org/licenses/by/3.0/nz/legalcode">http://creativecommons.org/licenses/by/3.0/nz/legalcode</A><A href="http://www.mfe.govt.nz/issues/land/land-cover-dbase/">http://www.mfe.govt.nz/issues/land/land-cover-dbase/</A><A href="http://www.waikatoregion.govt.nz/enviroinfo/redi/datasets/redi1410510.htm">http://www.waikatoregion.govt.nz/enviroinfo/redi/datasets/redi1410510.htm</A><A href="http://www.waikatoregion.govt.nz/enviroinfo/redi/datasets/redi1172690.htm">http://www.waikatoregion.govt.nz/enviroinfo/redi/datasets/redi1172690.htm</A>Need More Help?Email the Dataset Administrator.</DIV></DIV></DIV>

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