BCMCA_ECO_Algae_Pterygophora_californica_Data

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: 12/2008
Title: BCMCA_ECO_Algae_Pterygophora_californica_Data
Geospatial_Data_Presentation_Form: vector digital data
Online_Linkage:
\\data-server\gis\BCMCA\Repository\data_processed_namesStandardized\Plants\BCMCA_Algae_Final_01212009.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 socio-economic spatial data at scales relevant to a BC coast-wide analysis.
Purpose:
The purpose of this dataset is to identify areal extents of Pterygophora californica presence that helps inform the marine feature identified at the BCMCA Marine Plants Workshop.
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: In work
Maintenance_and_Update_Frequency: Unknown
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -131.451757
East_Bounding_Coordinate: -122.925026
North_Bounding_Coordinate: 52.723695
South_Bounding_Coordinate: 48.240472
Keywords:
Theme:
Theme_Keyword_Thesaurus:
REQUIRED: Reference to a formally registered thesaurus or a similar authoritative source of theme keywords.
Theme_Keyword: Pterygophora
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_Organization_Primary:
Contact_Organization: BCMCA
Contact_Person: Karin Bodtker
Contact_Position: Co-chair
Contact_Address:
Address_Type: mailing and physical address
Address: 1405-207 West Hastings Street
City: Vanvouver
State_or_Province: BC
Postal_Code: V6B 1H7
Country: Canada
Contact_Voice_Telephone: 604-696-5044
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>
Process_Step:
Process_Description:
<<The methods used to combine datasets to identify areal extents of Pterygophora 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: All processing steps performed by Melissa Meneghetti
Contact_Organization: Coastal Resource Mapping
Contact_Position: Spatial Analyst

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: 55
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: 0.000100
Ordinate_Resolution: 0.000100
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: BCMCA_ECO_Algae_Pterygophora_californica_Data
Attribute:
Attribute_Label: Shape
Attribute_Definition: Feature geometry.
Attribute_Definition_Source: ESRI
Attribute_Domain_Values:
Unrepresentable_Domain: Coordinates defining the features.
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: DATE_
Attribute_Definition: Observation Date
Attribute:
Attribute_Label: LATDD
Attribute_Definition:
UBC specific field. Latitude of coordinate in Decimal Degrees. Values were converted from DM and DMS from original source.
Attribute:
Attribute_Label: LONGDD
Attribute_Definition:
UBC specific field. Longitude of coordinate in Decimal Degrees. Values were converted from DM and DMS from original source.
Attribute:
Attribute_Label: Feature
Attribute_Definition: Genus and Species name of marine feature.
Attribute:
Attribute_Label: SOURCE_DATA
Attribute_Definition:
The name of shapefile, feature class or table data was derived from.
Attribute:
Attribute_Label: Dataset_ID
Attribute_Definition: Common dataset identifier as categorized by BCMCA.
Attribute:
Attribute_Label: LATITUDE
Attribute_Definition:
CDC specific field. Latitude coordinates of original observation polygons. This will not necessarily be the centroid of all polygons as some polygons were merged together keeping attributes from only one of the polygons.
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: 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: LONGITUDE
Attribute_Definition:
CDC specific field. Longitude coordinates of original observation polygons. This will not necessarily be the centroid of all polygons as some CDC polygons were merged together keeping the attributes from only one of the polygons.
Attribute:
Attribute_Label: BuffDist_m_
Attribute_Definition:
UBC specific field. Displays the value used as a buffer radius for each point location. Values are either 50m or 2000m. These values are based on locational uncertainty of original coordinates. Values accurate to the minute were buffered with 2000m radius. Values accurate to the second were buffered to 50m (rounded up from 30.82m).
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: 20130501
Metadata_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: Living Oceans Society (for BCMCA)
Contact_Person: Carrie Robb
Contact_Position: GIS Specialist
Contact_Address:
Address_Type: mailing and physical address
Address: 1405-207 W. Hastings St.
City: Vancouver
State_or_Province: BC
Postal_Code: V6B 1H7
Country: Canada
Contact_Voice_Telephone: (604) 696-5044
Contact_Electronic_Mail_Address: crobb@livingoceans.org
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 Wed May 01 16:43:13 2013