Postelsia_spp_MARXAN

Metadata also available as

Metadata:


Identification_Information:
Citation:
Citation_Information:
Originator:
The British Columbia Marine Conservation Analysis (BCMCA), a Tides Canada Initiatives Project
Publication_Date: December, 2009
Title: Postelsia_spp_MARXAN
Geospatial_Data_Presentation_Form: vector digital data
Series_Information:
Series_Name: Ecological Data
Publication_Information:
Publisher: BCMCA
Online_Linkage:
\\vancouverserver\gis\BCMCA\data4Marxan_May2010\Plants\plant_marxan_features.mdb
Description:
Abstract:
The British Columbia Marine Conservation Analysis (BCMCA) is a collaborative project assembling and analyzing spatial information about Canada's Pacific Ocean. The overall goal of the BCMCA is to identify marine areas of high conservation value and marine areas important to human use. Results of the project are intended to inform and help advance marine planning initiatives in BC by providing collaborative, peer-reviewed scientific analyses based on the best ecological and human use spatial data at scales relevant to a BC coast-wide analysis.
Purpose:
The purpose of this dataset is to identify areal extents of Postelsia presence that helps inform the marine feature identified at the BCMCA Marine Plants Workshop. Data presented as 2km planning units for Marxan analysis.
Supplemental_Information:
This dataset is a compilation of data collected by many people, for different purposes, using different survey techniques with different methodologies within each technique and, therefore, considerable care must be taken when using the data, even for site-specific inquiries. Refer to the original metadata document for data limitations and usage. Title or link is provided within source information. Data was collected and merged by target feature layer using the following data sources: 1. UBC Herbarium (Algae Export.XLS). Identifies various algae species observations.
Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: unknown
Currentness_Reference: ground condition
Status:
Progress: Complete
Maintenance_and_Update_Frequency: None planned
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -127.993313
East_Bounding_Coordinate: -124.318219
North_Bounding_Coordinate: 50.960188
South_Bounding_Coordinate: 48.496929
Keywords:
Theme:
Theme_Keyword_Thesaurus:
REQUIRED: Reference to a formally registered thesaurus or a similar authoritative source of theme keywords.
Theme_Keyword: Postelsia
Theme_Keyword: Algae
Place:
Place_Keyword: British Columbia
Access_Constraints:
This dataset is subject to the terms and conditions of the data use agreements for the source datasets.
Use_Constraints:
This dataset is subject to the terms and conditions of the data use agreements for the source datasets.
Point_of_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Karin Bodtker
Contact_Organization: British Columbia Marine Conservation Analysis
Contact_Position: BCMCA Co-Chair
Contact_Address:
Address_Type: mailing and physical address
Address: 1405-207 West Hastings Street
City: Vancouver
State_or_Province: BC
Postal_Code: V6B 1H7
Country: Canada
Contact_Voice_Telephone: 6046965044
Contact_Electronic_Mail_Address: kbodtker@livingoceans.org
Native_Data_Set_Environment:
Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 2; ESRI ArcCatalog 9.3.1.3500

Data_Quality_Information:
Lineage:
Source_Information:
Source_Contribution:
UBC Herbarium (Algae Export). Raw data: Algae_Export.xls. Each recorded specimens represents sample collected within UBC Herbarium. Database contains 50 records for Postelsia palmaeformis, 104 records for Pterygophora californica, and 230 records for all other features. Only online reference index: <http://www.botany.ubc.ca/herbarium/algae/index.html>
Source_Information:
Source_Contribution: BCMCA 2 km x 2 km planning units for the Canadian Pacific EEZ.
Process_Step:
Process_Description:
<<The methods used to combine datasets to identify areal extents of Postelsia presence are as follows >>
Source_Used_Citation_Abbreviation:
\\CRMLTD03\E$\F\Crm1143\Source\080818_SourceDocs\Original_Data\Plants\BCMCA_Plants.gdb
Process_Step:
Process_Description:
--> To prepare UBC dataset:
Converted UBC Algae Export.xls table into dbase format so that the XY coordinates stored in the records could be plotted spatially and exported as point feature classes. In the Algae Export excel sheet, majority of the coordinates had been converted to decimal degrees in two unnamed columns that were formatted to "scientific" and were displayed in scientific notation. This column was changed to "number" format to two decimal places. Two new columns were created to store decimal degrees: "LatDD" and "LongDD". For the coordinates not previously converted into decimal degrees: converted using an excel conversion formula (can be found in many formats online). The longitude and latitude columns have the original DM/DMS coordinates.
Process_Step:
Process_Description:
Formatted excel spreadsheets for conversion to DBF format. Created new columns in all three worksheets, labeled "LatDD" and "LongDD" to store decimal degrees. Columns without headings or information were removed. Below is a summary of columns removed: From the Postelsia worksheet: Det. Date, Subsp., Subspauth, Var., Varauth.
From the Pterygophora worksheet: Subsp, Subspauth, Var., Varauth., Det. Date
From the Others worksheet: Subsp., Subspauth, Var., Varauth.
Saved excel worksheets as dbase version 4. The saved dbf tables were reviewed to ensure they contained the same amount of records as original excel worksheets, and the decimal degree coordinates were tested against the shoreline trim to ensure the points were in the correct locations around vancouver island. A number of records did not have coordinates and showed up at 0 lat, 0 long. These were deleted during processing.
Process_Step:
Process_Description:
All records were plotted and displayed in Arcmap using display XY data tool: Added the DBF table to ArcMap, right clicked, selected display XY Data. Selected appropriate Y and X field LatDD and LongDD respectively. Set the coordinate system to GCS North American 1983.
Process_Step:
Process_Description:
Turned event layer into feature class and projected data: Right click the event layer and select data, export data and saved as a shapefile. Projected shapefile using the project tool from GCS North American 1983 to NAD 1983 BC Environment Albers imported from CMN's S_EG95.shp. Converted shapefile to feature class using feature class to feature class tool.
Process_Step:
Process_Description:
Extracted target features (as identified within Plants workshop) into separate feature layers. Duplicate UBC points that had identical attribute and spatial information were deleted (One group had multiple inventory years, in which case, kept the point with the most recent survey date). Added 3 new fields to each of the species-specific feature classes. New fields are as follows: Feature (common name of marine feature identified), SOURCE_DATA (dataset shapefile name), and Dataset_ID (dataset common identifier as per BCMCA dataset DB notes). To add fields, used the add field tool in batch mode (right click tool in toolbox and select batch) to update all feature classes at once. Click and drag each feature into the batch field window to populate one row for each feature. To set each feature classes' tool parameters, scroll to the right in the table.
Populated the fields using the calculate field tool in batch mode. Feature fields were calculated to equal the "scientific name" column. SOURCE_DATA fields were calculated using the dataset source name (i.e. Algae Export.xls). Dataset_ID fields were calculated using the common dataset identifier.
Process_Step:
Process_Description:
Buffered extracted point feature layers to create polygon representations: **The CDC points are buffered by an uncertainty distance determined using NatureServe’s methodology (<http://www.natureserve.org/prodServices/eodraft/7.pdf>). To keep the datasets consistent, the UBC points were also buffered by a width determined by the precision of the recorded coordinates. On a spherical surface at sea level, one latitudinal second measures 30.82 metres and one latitudinal minute 1849 metres, and one latitudinal degree is 110.9 kilometres. These values were rounded up and points that were precise to the second were buffered by 50 m and points that were precise to the minute were buffered by 2000 m. When the precision varied between the latitude and longitude, the points were buffered by the least precise coordinates.** Created new field called BuffDist_m_ to show applicable buffer distance radius: 50m or 2000m. The buffer tool was used in batch mode (see batch mode explained in step 3) using the BuffDist_m_ field.
Process_Step:
Process_Description: Created Metadata.
Source_Used_Citation_Abbreviation: C:\F\Crm1143\Admin\MetaData\BullKelp_Final.xml
Process_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person:
Steps up to and including this one completed by Melissa Meneghetti
Contact_Organization: Coastal Resource Mapping
Process_Step:
Process_Description:
The Shape to Centroid function in XTools was used to export a new point feature class containing the original point locations. This came as a recommendation by BCMCA Algae experts who suggested that algae features would be best quantified by occurence rather than area in planning units for Marxan analysis.
Process_Date: Dec 1, 2009
Process_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Mathew Evans
Contact_Organization: BCMCA
Contact_Position: GIS Contractor
Process_Step:
Process_Description:
Planning units intersecting algae points were selected and exported to a new feature class.The ID field was created and populated with a MARXAN ID. Lastly, the PRESENCE field was created and populated with a value of '1'.
Process_Date: Dec 2, 2009
Process_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Mathew Evans
Contact_Organization: BCMCA
Contact_Position: GIS Contractor
Process_Step:
Process_Description: Unit ID updated to match new BCMCA planning unit IDs
Source_Used_Citation_Abbreviation:
O:\BCMCA\Data_Andy_temp_June07\PlantsMetadata\Postelsia_spp_MARXAN.xml
Process_Date: June 2010
Process_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Andy Pettersson
Contact_Organization: BCMCA
Contact_Position: GIS Contractor

Spatial_Data_Organization_Information:
Direct_Spatial_Reference_Method: Vector
Point_and_Vector_Object_Information:
SDTS_Terms_Description:
SDTS_Point_and_Vector_Object_Type: G-polygon
Point_and_Vector_Object_Count: 22
SDTS_Terms_Description:
SDTS_Point_and_Vector_Object_Type: Label point
Point_and_Vector_Object_Count: 39346
SDTS_Terms_Description:
SDTS_Point_and_Vector_Object_Type: GT-polygon composed of chains
Point_and_Vector_Object_Count: 39346
SDTS_Terms_Description:
SDTS_Point_and_Vector_Object_Type: Point
Point_and_Vector_Object_Count: 4

Spatial_Reference_Information:
Horizontal_Coordinate_System_Definition:
Planar:
Map_Projection:
Map_Projection_Name: Albers Conical Equal Area
Albers_Conical_Equal_Area:
Standard_Parallel: 50.000000
Standard_Parallel: 58.500000
Longitude_of_Central_Meridian: -126.000000
Latitude_of_Projection_Origin: 45.000000
False_Easting: 1000000.000000
False_Northing: 0.000000
Planar_Coordinate_Information:
Planar_Coordinate_Encoding_Method: coordinate pair
Coordinate_Representation:
Abscissa_Resolution: 0.000606
Ordinate_Resolution: 0.000606
Planar_Distance_Units: meters
Geodetic_Model:
Horizontal_Datum_Name: North American Datum of 1983
Ellipsoid_Name: Geodetic Reference System 80
Semi-major_Axis: 6378137.000000
Denominator_of_Flattening_Ratio: 298.257222
Vertical_Coordinate_System_Definition:
Altitude_System_Definition:
Altitude_Resolution: 0.000100
Altitude_Encoding_Method:
Explicit elevation coordinate included with horizontal coordinates

Entity_and_Attribute_Information:
Detailed_Description:
Entity_Type:
Entity_Type_Label: Postelsia_spp_MARXAN
Attribute:
Attribute_Label: Shape
Attribute_Definition: Feature geometry.
Attribute_Definition_Source: ESRI
Attribute_Domain_Values:
Unrepresentable_Domain: Coordinates defining the features.
Attribute:
Attribute_Label: OBJECTID
Attribute_Definition: Internal feature number.
Attribute_Definition_Source: ESRI
Attribute_Domain_Values:
Unrepresentable_Domain:
Sequential unique whole numbers that are automatically generated.
Attribute:
Attribute_Label: UNIT_ID
Attribute_Definition: Unique planning unit ID
Attribute:
Attribute_Label: Shape_Length
Attribute_Definition: Length of feature in internal units.
Attribute_Definition_Source: ESRI
Attribute_Domain_Values:
Unrepresentable_Domain: Positive real numbers that are automatically generated.
Attribute:
Attribute_Label: Shape_Area
Attribute_Definition: Area of feature in internal units squared.
Attribute_Definition_Source: ESRI
Attribute_Domain_Values:
Unrepresentable_Domain: Positive real numbers that are automatically generated.
Attribute:
Attribute_Label: ID
Attribute_Definition: Unique Marxan ID
Attribute:
Attribute_Label: PRESENCE
Attribute_Definition: A presence/absence indicator. 1=presence, 0=absence
Overview_Description:

Distribution_Information:
Distributor:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: British Columbia Marine Conservation Analysis
Contact_Instructions: See www.bcmca.ca for distribution details
Resource_Description: Downloadable Data
Standard_Order_Process:
Digital_Form:
Digital_Transfer_Information:
Transfer_Size: 50.954

Metadata_Reference_Information:
Metadata_Date: 20100617
Metadata_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Andy Pettersson
Contact_Organization: BCMCA
Contact_Position: GIS Contractor
Contact_Address:
Address_Type: mailing and physical address
Address: 1405-207 West Hastings Street
City: Vancouver
State_or_Province: BC
Postal_Code: V6B 1H7
Country: Canada
Contact_Voice_Telephone: 604-696-5044
Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998
Metadata_Time_Convention: local time
Metadata_Extensions:
Online_Linkage: <http://www.esri.com/metadata/esriprof80.html>
Profile_Name: ESRI Metadata Profile

Generated by mp version 2.9.6 on Thu Aug 26 15:08:59 2010