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Proteceee) Areas in British Columbia

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Proteceee) Areas in British Columbia PROTECEEE)AREAS IN BRITISH COLUMBIA: An Analysis of Gaps in Representation for Conservation Purposes Guide to Version 1.2a Spreadsheet and Digital Maps by: Marvin Eng, Bruce Enns, Don Morgan, and Rick Page Ministry of Forests, Research Branch 10 March 1994 This document describes an update to the third approximation of provincial scale conservation gap analysis (Version 1.2). This update was done to include the newly designated Tsy-10s Provincial Parks in the Chilko Lake Area. Principal differences between this version and Version 1.I (93i07112) are: 1. The table format has been substantially simplified and a Microsoft Excel spreadsheet of the tables is available. 2. All PAS study areas, including Vancouver Island, are included in this version. 3. Lake areas are included in this version as a separate BEC subzone variant. 4. This version does not include any information about "Areas of Interest". The Microsoft Excel spreadsheet allows menu driven viewing of the data and gaming and updates. A user's guide to the spreadsheet is included as Attachment 1. Paper copies of the summary tables are available on request. The primary audience for this version is the PAS Office. It is primarily designed as an information retrieval and tracking mechanism for that office. This document is intended to provide background information on the process of arriving at the figures in the spreadsheet. The spreadsheet is based on data from the overlay of the following map layers: 1. Ecoprovince, Ecoregion, Ecosection classification; 2. Biogeoclimatic SubzoneiVariant classification; 3. Existing Federal and Provincial Protected Areas; 4. Cabinet Approved PAS Study Areas; and 5. Large lakes. This document describes the data layers used and lists some of the deficiencies and problems with the data layers. The document also describes the digital maps, analysis process and the summary tables. 2.0 DESCRIPTION OF DA"$B LAYERS 2.1 Ecoprovince, Ecoreqion, Ecosection Classification Source: BC Environment; Wildlife Branch; Dennis Demarchi Date: March 1993 Mapping Scale: 1:250 000 This layer is the "finalized" version of the Ecoregion Classification, known as "third approximation". The linework has been copied, where appropriate, from the Biogeoclimatic layer. This layer has been extensively reviewed in-house and by the Forest Service Regional Ecologists. It is not expected to change for the foreseeable future. A complete list of names and codes is attached (Attachment 2). 2.2 Bioueoclimatic SubzoneJVariant Classification (BEC) Source: Forest Service; Research Branch; Shirley Mah Date: May 1993 Mapping Scale: 1:250 000 This layer is the "first useable approximation" of a provincial BEC map. The original data came from the Forest Service Regional Ecologist's digitized versions of their regional BEC maps. There are still numerous regional boundary and map sheet boundary inconsistencies in this data layer. It is hoped that these problems will be fixed during the summer of 1993. There are still several un-named subzone variants (identified with a "u" in the first position of the subzone code). Contact the regional ecologist if these codes apply to your area of interest. A near complete list of subzone variant codes and names is attached (Attachment 3). 2.3 Existinu Federal and Provincial Protected Areas Source: BC Parks; Planning and Conservation Services; Bill Munn. Date: April 1993 (Except Clayoquot and Tatshenshini, Sept 1993) Mapping Scale: 1:250 000; >250 ha parcels only. All protected areas larger than 250 ha were drawn on 1:250 000 NTS base maps and these were digitized. The following designations were mapped: NPECODE DESIGNATION Fully Protected: CLAY Clayoquot Sound Decision Protected Areas (designation pending) NEW Khutzeymateen and Tatshenshini Protected Areas (designation pending) PARK-A Provincial Parks (Class A) (including Tys-10s Provincial Park) ECO-RES Ecological Reserves WILD-CON The Purcell Wilderness Conservancy NP National Parks MBS Migratory Bird Sanctuaries (CWS) NWA National Wildlife Areas (CWS) Other Designations: PARK-B Provincial Parks (Class B) PARK-C Provincial Parks (Class C) RESERV BC Parks Recreation Areas WAF Forest Service Recreation Areas WMA Wildlife Management Areas A complete list of the protected areas, with their total area (including fresh water), is attached (Attachment 4). Any omissions should be brought to the attention of Bill Munn [387-45951. 2.4 Cabinet Approved PAS Studv Areas Source: Protected Area Strategy Office, Warren Mitchell. Date: September 1993 Mapping Scale: 1:250 000 All "large" PAS study areas were included, regardless of their size. All "small" PAS study areas larger than 250 ha were included. The PAS study area maps provided by the Regional Protected Areas Teams, usually at 1:50 000, were transcribed to 1:250 000 NTS base maps and these were digitized. Several additional study areas, not available at the time of the original digitizing, were obtained in digital form from MOF Timber Harvesting Branch. The portion of the Tatshenshini study area that lay outside the newly designated protected area is included as a Cabinet Approved Study Area. A complete list of cabinet approved study areas used is attached (Attachment 5). 2.6 Large Lakes Sources: BEC map for the Vancouver Forest Region Digital Ij base map for the remainder of the province; Crown Lands; Surveys and Resource Mapping; Peter Friesen. Date: January 1993 Mapping Scale: 1:250 000 for Vancouver Forest Region. 1:2 000 000 elsewhere. An adequate "fresh water" layer could not be compiled in time for this version. In addition there are several conceptual problems in terms of dealing with fresh water. However, several large lakes in British Columbia cannot be ignored. Therefore, we used the lakes present in the BEG layer for the Vancouver Forest Region (all lakes larger that 35 ha on the 1:250 000 base maps). For the remainder of the province we extracted the lakes larger than 10 000 ha from the digital Ij(1 :2 000 000) base. The match between this data and the 1:250 000 data is relatively poor particularly in the Nelson Forest Region. A list of the large lakes from the 1:2 000 000 source is attached (Attachment 6). 3.0 DIGITAL MAPS The data layers described above were compiled into provincial maps and divided into 6 separate mapsheets as follows: Map Name Area Covered ................................................ RES8 UTM Zone 7 and UTM Zone 8 RES9N UTM Zone 9 North of Latitude 54 RES9S UTM Zone 9 South of Latitude 54 RESIONI 1 UTM Zone 10 North of Latitude 54 RESI OS UTM Zone 10 South of Latitude 54 RESI 1 UTM Zone 11 The maps are provided in PC compatible PamapGlS format. The maps are UTM projections in NAD27. All linework and database levels are labelled internally and are consistent across mapsheets. NO PAMAP RASTER COVERS ARE PROVIDED. The raster covers used, as described below are not PC compatible. All levels except the Ecoregion level (Ivl 13) and the BEC level (Ivl2) require the UTM mapsheet boundary level (Ivl 62) and full map boundary level (Ivl 61) to grid properly. Digital maps are available from Ministry of Forests Research Branch. Contact Marvin Eng (387-2710). 4.0 ANALYSIS PROCESS The following steps were completed to obtain the summary tables: 1. Polygon formation: each layer in each mapsheet with a 100m pixel with a reduction factor of 3. 2. Overlay levels for each mapsheet: No minimum polygon size, no sliver removal. 3. Database construction: a) The resultant level database for each mapsheet was exported and all the databases were joined together in dBase. b) All records with no BEG label were deleted. Those records included ocean, mapsheet boundary mis-matches and jurisdictions outside of BC. c) A summary database of unique Ecosection and BEC subzonelvariant combinations. d) All records less than 10 ha in size were deleted from this database. 4. A microsoft Excel Spreadsheet was prepared from the database. 5.0 DESGRIPT18N OF THE TABLES The table format has been substantially simplified over previous version. All tables now show, as rows, "units" at varying ranges of detail from the entire province to BEC subzone/variants within ecosections. Columns show hectares in fully protected status, other designations (see section 2.3), PAS study areas, combined area in some form of protected status and total areas. For each hectare column their is a percentage column showing the percent of the unit in that status. For the total area column the percent column is the percent of B.C. that the unit makes up. Seven tables are presented in this format: 1. Provincial Summary (also available as a grand total in each table). I page. 2. Regional Summary (regions are defined based on the ecosections assigned to each Regional Protected Areas Team; they are not administrative regions). 1 page. 3. Ecoregion Classification Summary (showing protected status for each unit at each level in the classification). 4 pages. 4. Biogeoclimatic Classification Summary (showing protected status for each unit at each level in the classification). 9 pages. 5. BEC Zone within Ecoprovince Summary. 3 pages. 6. BEC Subzone within Ecoregion Summary. 13 pages. 7. BEC SubzoneIVariant within Ecosection Summary. 27 pages. Finally a separate paper table has been prepared for those who do not wish to have the spreadsheet version. This table shows the Ecosection and BEC SubzoneIVariant composition of each protected area used in the process (30 pages). ATTACHMENT 1 MICROSOFT EXCEL SPREADSHEET USER'S GUIDE BAS Spreadsheet README Please read this file before using the PAS spreadsheet application. Description The PAS spreadsheet application contains a database of Protected Areas and PAS Study areas developed by the Research Branch of the Ministry of Forests, and several tables, graphs and crosstabulations that summarize these data A PAS menu choice has been added to the Excel menu bar to facilitate movement from one summary to another, to update the database, and to investigate the implications of PAS decisions on the data by using a set of game functions.
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