| snippet:
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The Regional Wetland GIS database has been compiled from the Freshwater Ecosystems of New Zealand (FENZ) wetland spatial layer for Canterbury (Leathwick et al.... |
| summary:
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The Regional Wetland GIS database has been compiled from the Freshwater Ecosystems of New Zealand (FENZ) wetland spatial layer for Canterbury (Leathwick et al.... |
| extent:
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[[169.56656227412,-44.9491934037878],[174.108113203676,-41.9195562944064]] |
| accessInformation:
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Environment Canterbury |
| thumbnail:
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thumbnail/thumbnail.png |
| maxScale:
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1.7976931348623157E308 |
| typeKeywords:
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["Data","Service","Map Service","ArcGIS Server"] |
| description:
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The FENZ geodatabase provide a set of spatial layers describing environmental and biological patterns in New Zealand’s freshwater ecosystems - rivers and streams, lakes and wetlands. The FENZ wetlands layer is focused on freshwater palustrine wetlands and standing waterbodies with a 500 m maximum length. It does not include estuarine, marine, riverine and lacustrine hydrosystems because these are (or will be) the focus of analogous classification and ranking projects.
In 2003 Environment Canterbury provided the Department of Conservation with existing regional wetland survey information of the 1980s and 1990s, collated into a GIS database and report (Davis 1999). This, together with information from other national database’s was checked against satellite imagery collected between September 1999 and 2003 to complete delineation of wetland extent. The baseline for ‘current’ wetland extent in the FENZ wetland spatial layer is therefore 1999-2003. Coastal wetland vegetation/habitats were field surveyed, mapped onto aerial photographs, described and entered into a GIS database over the period 2004-2011. Mapped wetlands were described following the hierarchical classification system developed by Johnson and Gerbeaux (2004), which in turn drew on the wetland classification of Clarkson et al. (2003) and the vegetation/habitat mapping and description system of Atkinson (1985). 58 ground-surveyed coastal wetland areas are delimited in the Regional Wetland GIS database. A survey-dated description of each wetland, together with assessments of wetland condition, threats and ecological significance, is provided in the attributes table. The system of field survey and database reporting developed for the region’s coastal wetland habitats will now be applied to inland freshwater wetlands. Ground-based survey will be carried out to add to, update or improve delineation of wetland areas derived from FENZ, as well as provide a similar level of information on wetland class, vegetation type and overall ecological condition. Results of future wetland survey, ecological description and significance assessment will progressively be added to the Regional Wetland Database. |
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| catalogPath:
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| title:
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Wetlands |
| type:
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Map Service |
| url:
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| tags:
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["Wetlands","Fauna","Flora","Hydrology","Habitat"] |
| culture:
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en-NZ |
| name:
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Wetlands |
| guid:
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8F4258CD-3B20-4506-9C1C-C45191963BDD |
| minScale:
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0 |
| spatialReference:
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NZGD_2000_New_Zealand_Transverse_Mercator |