molluscan_shellfish

Citation:

Citation Information:

Originator: Maine Department of Marine Resources (MEDMR)
Publication Date: 20090825
Title: molluscan_shellfish
Geospatial Data Presentation Form: vector digital data
Series Information:

Series Name: Maine GIS Data Catalog

Publication Information:

Publication Place: Augusta ME
Publisher: Maine Office of Geographic Information Systems (MEGIS)

Online Linkage: http://megis.maine.gov/catalog/

Description:

Abstract:
Molluscan Shellfish are polygon datasets that contain distribution information for the molluscan shellfish species; sea scallop (Placopectin magellanicus), american oysters (Crassostrea virginica), atlantic surf clams (Spisula solidissima), blue mussels (Mytilus edulis), european oysters (Ostrea edulis), hard clams (Mercenaria mercenaria), razor clam (Ensis directus) and softshell clams (Mya arenaria) for the coast of Maine . Polygons are based on locations indicated by town officials, harvesters, Harbormasters, DMR biologists, DMR specialists or DMR scientists from February 2008 to May 2009. POLYGON codes include: Town, County, Species, NOAA_Chart, Updated, Acres and Source. A COMMENT field indicates sea scallop locations obtained from DMR sea scallop tow survey data generated during 2005 - 2007.
Purpose:
Though primarily based on harvestable locations, shellfish species distributions are helpful tools for planning activities. Baseline data of shellfish species distributions in Maine provides a foundation for future data updates. Data at this scale is suitable for use in generalized studies and local planning.
Supplemental Information: These layers may not be current or complete, as shellfish distributions could change over time and portions of the Maine coast may not have been included.

Time Period of Content:

Currentness Reference: publication date

Status:

Progress: In work
Maintenance and Update Frequency: Irregular

Spatial Domain:

Bounding Coordinates:

West Bounding Coordinate: -70.634993
East Bounding Coordinate: -66.926343
North Bounding Coordinate: 45.17244
South Bounding Coordinate: 43.251035

Keywords:

Theme:

Theme Keyword Thesaurus: Maine GIS Thesaurus-Theme
Theme Keyword: marine environment monitoring
Theme Keyword: marine biology
Theme Keyword: molluscan
Theme Keyword: shellfish
Theme Keyword: commodities
Theme Keyword: coastal
Theme Keyword: biology
Theme Keyword: 40000
Theme Keyword: sea scallop
Theme Keyword: blue mussel
Theme Keyword: razor clam
Theme Keyword: hard clam
Theme Keyword: european oyster
Theme Keyword: atlantic surf
Theme Keyword: american oyster
Theme Keyword: molluscan shellfish
Theme Keyword: softshell clam
Theme Keyword: aquaculture
Theme Keyword: aquatic habitat
Theme Keyword: habitat
Theme Keyword: Crassastrea virginica
Theme Keyword: Ensis directus
Theme Keyword: Mercenaria mercenaria
Theme Keyword: Mya arenaria
Theme Keyword: Mytilus edulis
Theme Keyword: Ostrea edulis
Theme Keyword: Placopectin magellanicus
Theme Keyword: Spisula solidissima

Place:

Place Keyword Thesaurus: Maine GIS Thesaurus-Place
Place Keyword: Maine
Place Keyword: Gulf of Maine

Stratum:

Stratum Keyword Thesaurus: Maine GIS Thesaurus-Stratum
Stratum Keyword: biosphere
Stratum Keyword: oceans

Access Constraints:
Secondary distribution by permission only. Please see Maine Office of Geographic Information Systems (MEGIS) license agreement at <http://megis.maine.gov/>. Any secondary distribution must have this documentation appended.
Use Constraints:
Users must assume responsibility in determining the usability of this data for their purposes. Digital maps retain the accuracy of their source materials. The best use of data mapped at scales of 1:500,000 and 1:250,000 is in statewide planning and studies; at 1:100,000 in regional planning and studies; at 1:62,500 and 1:24,000 in detailed studies and local planning; and at 1:12,000 and 1:5,000 or larger scales in parcel level studies and detailed local planning. In the use of Maine GIS data, please check sources, scale, accuracy, currentness and other available information. Please confirm that you are using the most recent copy of both data and metadata from the Maine GIS Data Catalog.
Point of Contact:

Contact Information:

Contact Person Primary:

Contact Person: Michelle Mason Webber
Contact Organization: (MEDMR) Maine Department of Marine Resources

Contact Position: Shellfish Program Coordinator
Contact Address:

Address Type: mailing address
Address: 21 State House Station
City: Augusta
State or Province: ME
Postal Code: 04333
Country: USA

Contact Voice Telephone: 207 624 6570
Contact Facsimile Telephone: 207 624-6015
Contact Electronic Mail Address: michelle.mason@maine.gov
Hours of Service: Monday through Friday 0700 - 1600 EST

Data Set Credit: Credit should always be given to the data source and/or originator when the data is transferred or printed.
Native Data Set Environment: Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 2; ESRI ArcCatalog 9.2.6.1500

Attribute Accuracy:

Attribute Accuracy Report: Fields named: Town, County, Species, NOAA_Chart, Updated, Shape, and Source have been maintained and are complete. Other fields may not be complete.

Logical Consistency Report: molluscan shellfish is a polygon dataset that provides distribution information for molluscan shellfish for the coast of Maine.
Completeness Report: The dataset is updated on an irregular schedule.
Positional Accuracy:

Horizontal Positional Accuracy:

Horizontal Positional Accuracy Report:
The data were compiled on a 1:40000 scale base with a horizontal accuracy +/- 70 feet or 20 meters (based on National Map Accuracy Standards). Polygons are based on locations indicated by town officials, harvesters, Harbormasters, DMR biologists, DMR specialists or DMR scientists from February 2008 to May 2009.
Lineage:

Source Information:

Source Citation:

Citation Information:

Originator: Local knowledge from Maine coastal town officials
Publication Date: Unpublished Material
Title: MEDMR local knowledge
Geospatial Data Presentation Form: paper
Other Citation Details:
Multiple NOAA raster charts were used in this project. Attribute field "NOAA_Chart" provides the specific chart title associated with specific polygons. Chart scales used in the project range from 1:80000 to 1:20000
Source Time Period of Content:

Time Period Information:

Range of Dates/Times:

Beginning Date: 2/19/2008
Beginning Time: Unknown
Ending Date: 5/1/2009
Ending Time: Unknown

Source Citation Abbreviation: medmr_loc_knwlg
Source Contribution: Local knowledge of molluscan shellfish species locations along the Maine coast

Source Information:

Source Citation:

Citation Information:

Originator: Maine Office of Geographic Information Systems (MEGIS)
Publication Date: 20070701
Publication Time: Unknown
Title: metwp24
Geospatial Data Presentation Form: vector digital data
Series Information:

Series Name: Maine GIS
Issue Identification: SDE server; Internet Data Catalog

Publication Information:

Publication Place: Augusta ME
Publisher: Maine Office of Geographic Information Systems

Other Citation Details: 1:24000
Online Linkage: http://megis.maine.gov/catalog/

Source Scale Denominator: 24000
Type of Source Media: online
Source Time Period of Content:

Time Period Information:

Range of Dates/Times:

Beginning Date: 1/1/1948
Beginning Time: Unknown
Ending Date: 8/22/2005
Ending Time: Unknown

Source Currentness Reference: source dates

Source Citation Abbreviation: metwp24

Source Information:

Source Citation:

Citation Information:

Originator: (NOAA) National Oceanic and Atmospheric Administration
Publication Date: multiple dates
Title: NOAA_RNC
Geospatial Data Presentation Form: raster digital data
Series Information:

Series Name: Raster Navigational Charts: NOAA RNC's

Publication Information:

Publication Place: Silver Springs, MD
Publisher: National Ocean Service-Office of Coast Survey

Other Citation Details:
Multiple NOAA raster charts were used in this project. Attribute field "NOAA_Chart" provides the specific chart title associated with specific polygons. Chart scales used in the project range from 1:80000 to 1:20000
Online Linkage: http://www.nauticalcharts.noaa.gov/staff/charts.htm#RNC

Type of Source Media: raster digital data
Source Time Period of Content:

Time Period Information:

Single Date/Time:

Time of Day: Unknown

Source Currentness Reference: publication date

Source Citation Abbreviation: noaa_rnc
Source Contribution: Base information to which shellfish polygons were referenced.

Process Step:

Process Description:
Sea scallop tow survey data insertion- Sea scallop tow survey data for years 2005 through 2007 were extracted from the MEDMR's MARVIN database, and placed into a Mircosoft Excel spreadsheet format. This spreadsheet was converted into a Microsoft Access database file, and imported into the ArcGIS project file. The X -Y coordinates were plotted in ArcMap, using geographic coordinate system "North American Datum 1983". Polygons were drawn around points containing reported quantities of at least one sea scallop. There were two points in the 2005 sea scallop data that were located over a land mass: they contained reported quantities of zero scallops, and they were excluded from the ssea scallop shapefile. There were two points in the 2006 sea scallop data that were south of Mount Desert Island. Since there was no reference town in the "towns-24K" file to correspond to these points, they were excluded from the sea scallop shapefile.
Process Date: 2007/12/31
Process Contact:

Contact Information:

Contact Person Primary:

Contact Person: Michelle Mason Webber
Contact Organization: (MEDMR) Maine Department of Marine Resources

Contact Position: Shellfish Program Coordinator
Contact Address:

Address Type: mailing address
Address: 21 State House Station
City: Augusta
State or Province: ME
Postal Code: 04333
Country: USA

Contact Voice Telephone: 207 624 6570
Contact Facsimile Telephone: 207 624-6015
Contact Electronic Mail Address: michelle.mason@maine.gov
Hours of Service: Monday through Friday 0700 - 1600 EST

Process Step:

Process Description:
Map construction- Series of paper maps were created for each coastal town, depicting the nearshore coastline. These maps were created using electronic National Oceanic and Atmospheric Administration (NOAA) charts in ArcMap 9.2, which were then converted to .PDF documents. Landmarks were used as reference points from one map to the next, so participants could stay oriented throughout the map series.
Process Date: 2009/05
Process Contact:

Contact Information:

Contact Person Primary:

Contact Person: Michelle Mason Webber
Contact Organization: (MEDMR) Maine Department of Marine Resources

Contact Position: Shellfish Program Coordinator
Contact Address:

Address Type: mailing address
Address: 21 State House Station
City: Augusta
State or Province: ME
Postal Code: 04333
Country: USA

Contact Voice Telephone: 207 624 6570
Contact Facsimile Telephone: 207 624-6015
Contact Electronic Mail Address: michelle.mason@maine.gov
Hours of Service: Monday through Friday 0700 - 1600 EST

Process Step:

Process Description:
Data collection- Paper map series were sent to town officials, harvesters, Harbormasters, MEDMR specialists, MEDMR scientists and MEDMR biologists. All recipients were asked to mark molluscan shellfish resource locations, observed within the last two to three years, on the maps. They could use a different pen color for each species, or write the species name in the marked areas. They were asked to send the maps back to the project manager. Two people chose to mark resources on paper NOAA charts, which were returned to the project manager. Some people marked only commercially viable shellfish locations, and other people marked all observed locations of shellfish resources
Process Date: 2009/05
Process Contact:

Contact Information:

Contact Person Primary:

Contact Person: Michelle Mason Webber
Contact Organization: (MEDMR) Maine Department of Marine Resources

Contact Position: Shellfish Program Coordinator
Contact Address:

Address Type: mailing address
Address: 21 State House Station
City: Augusta
State or Province: ME
Postal Code: 04333
Country: USA

Contact Voice Telephone: 207 624 6570
Contact Facsimile Telephone: 207 624-6015
Contact Electronic Mail Address: michelle.mason@maine.gov
Hours of Service: Monday through Friday 0700 - 1600 EST

Process Step:

Process Description:
Digitization of data- Marked maps were scanned into Adobe Acrobat 6.0 Professional, and a .PDF document was created. The .PDF documents were georeferenced to the appropriate electronic NOAA chart, and polygons were created to encompass each marked location of molluscan shellfish. Where multiple sources indicated a specific location, the most "hands-on" source category was used as the source. Some polygons are composites from several sources, and show the largest boundary indicated by the multiple sources
Process Date: 2009/05
Process Contact:

Contact Information:

Contact Person Primary:

Contact Person: Michelle Mason Webber
Contact Organization: (MEDMR) Maine Department of Marine Resources

Contact Position: Shellfish Program Coordinator
Contact Address:

Address Type: mailing address
Address: 21 State House Station
City: Augusta
State or Province: ME
Postal Code: 04333
Country: USA

Contact Voice Telephone: 207 624 6570
Contact Facsimile Telephone: 207 624-6015
Contact Electronic Mail Address: michelle.mason@maine.gov
Hours of Service: Monday through Friday 0700 - 1600 EST

Process Step:

Process Description: Data review- Michelle Mason Webber fixed town coding errors. Seth Barker removed overlapping polygons, created a geodatabase, and applied topology to the shellfish layers
Process Date: 2009/05
Process Contact:

Contact Information:

Contact Organization Primary:

Contact Organization: (MEDMR) Maine Department of Marine Resources
Contact Person: Seth Barker

Contact Position: GIS Specialist
Contact Address:

Address Type: mailing address
Address: PO Box 8
City: West Boothbay Harbor
State or Province: ME
Postal Code: 04575
Country: USA

Contact Voice Telephone: (207) 633-9507
Contact Facsimile Telephone: (207) 633-9579
Contact Electronic Mail Address: seth.barker@maine.gov
Hours of Service: Monday through Friday 0800 - 1700 EST

Cloud Cover: 0

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: 289

Horizontal Coordinate System Definition:

Geographic:

Latitude Resolution: 0
Longitude Resolution: 0

Geodetic Model:

Semi-major Axis: 0
Denominator of Flattening Ratio: 0

Vertical Coordinate System Definition:

Altitude System Definition:

Altitude Resolution: 1.000000
Altitude Encoding Method: Explicit elevation coordinate included with horizontal coordinates

Detailed Description:

Entity Type:

Entity Type Label: molluscan shellfish
Entity Type Definition: polygon attribute table
Entity Type Definition Source: Environmental Systems Research Institute, Inc. (ESRI)

Attribute:

Attribute Label: ACRES
Attribute Definition: Area in acres

Attribute:

Attribute Label: COMMENT
Attribute Definition: Additional information regarding the data source.
Attribute Definition Source: Indicates sea scallop locations obtained from DMR sea scallop tow survey data generated during 2005 - 2007

Attribute:

Attribute Label: COUNTY
Attribute Definition: County name
Attribute Definition Source: The name of the county in which the selected feature's town is located. The county was determined using DeLorme's "Maine Atlas and Gazetteer" county map

Attribute:

Attribute Label: FID
Attribute Definition: Internal feature number.
Attribute Definition Source: ESRI
Attribute Domain Values:

Unrepresentable Domain: Sequential unique whole numbers that are automatically generated.

Attribute Value Accuracy Information:

Attribute Value Accuracy Explanation: Sequential unique whole numbers that are automatically generated

Attribute:

Attribute Label: NOAA_CHART
Attribute Definition: Chart number of basemap
Attribute Definition Source: Electronic NOAA chart that contains the feature. Scales vary from 1:20,000 to 1:80,000

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
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: SHAPE_LEN
Attribute Definition: length of the polygon perimeter in meters
Attribute Definition Source: ESRI

Attribute:

Attribute Label: SOURCE
Attribute Definition: Contributor
Attribute Definition Source:
The source of first-hand knowledge of the approximate location of the feature. The catagories of sources include: town officials, harvesters, Harbormasters, MEDMR biologists, MEDMR specialists or MEDMR scientists. Where two sources indicated the same feature location, the most "hands-on" source category was listed as the source. Some features are composites from several sources, and show the most extensive boundary indicated by the multiple sources
Attribute:

Attribute Label: SPECIES
Attribute Definition: Species common name
Attribute Definition Source: The molluscan bivalve known as (wil insert scientific name here)

Attribute:

Attribute Label: TOWN
Attribute Definition: Town name
Attribute Definition Source: The identity of the town was derived from MEDMR shapefile "towns-24k". Town boundaries were determined using shapefile "metwp24" from the MEGIS data catalog

Attribute:

Attribute Label: UPDATED
Attribute Definition: The date the feature's boundaries were last changed

Distributor:

Contact Information:

Contact Organization Primary:

Contact Organization: (MEGIS) Maine Office of Geographic Information Systems

Contact Position: GIS Coordinator
Contact Address:

Address Type: mailing address
Address: State House Station 145
City: Augusta
State or Province: ME
Postal Code: 04333-0145
Country: USA

Contact Voice Telephone: (207) 624-7700
Contact Facsimile Telephone: (207) 287-3842
Hours of Service: Monday through Friday 0800 - 1700 EST

Resource Description: Downloadable Data
Distribution Liability:
Users must assume responsibility to determine the usability of this data for their purposes. Although these data have been processed successfully on a computer system at the Maine Office of Geographic Information Systems, no warranty expressed or implied is made by MEGIS regarding the utility of the data on any other system, nor shall the act of distribution constitute any such warranty. Neither the Maine Office of Geographic Information Systems, nor any of its contributors, is liable for misuse of the data, for damage, for transmission of viruses, or for computer contamination through the distribution of these data sets.
Standard Order Process:

Digital Form:

Digital Transfer Information:

Format Name: ESRI Shapefile
Format Version Number: ARC Version 9.x
Format Specification: ArcView Shapefile Format
Format Information Content:
MEGIS has made all vector layers, in the Maine GIS Internet Data Catalog, available in ESRI's ArcView shapefile format. A shapefile is a simple non-topological format that stores the geometry and attribute information for a set of geographic features as a set of vector (point, line, polygon) coordinates. Shapefiles draw quickly and directly in ArcView, ArcGIS, ArcExplorer. Shapefiles are a compatible data type for many other types of GIS software. Three files are fundamental to each shapefile: .shp stores the feature geometry (shape and location information); .shx stores the index of the feature geometry; .dbf a dBASE (TM) file stores the attribute information for the features. Other index files may be created to help speed analysis and query: these file formats are .sbn .sbx .ain .aix .fbn and .fbx. In addition you may find projection .prj, and metadata .xml, files associated with shapefiles.
File Decompression Technique:
Data available from this website is in .zip compressed format. WinZip is a Windows based, PKZip-compatible compression utility. You will need a program like this to extract the data. A link to a trial copy WinZip software is available at http://megis.maine.gov/links/.
Digital Transfer Option:

Online Option:

Access Instructions:
These data are available to Internet browsers for download from the Maine GIS Internet Data Catalog. Data available from this website is in .zip compressed format. WinZip is a Windows based, PKZip-compatible compression utility. You will need a program like this to extract the data. A link to a trial copy WinZip software is available at http://megis.maine.gov/links/. If you are not already a GIS user, free software for viewing these files is available from Environmental Systems Research Institute, Inc. (ESRI). See http://megis.maine.gov/links/ for a link to ArcExplorer 9.x .
Fees: Data may be downloaded from Maine GIS Internet Data Catalog at no charge.
Turnaround: Data is available for immediate download from the Maine GIS Internet Data Catalog.

Distributor:

Contact Information:

Contact Organization Primary:

Contact Organization: (MEGIS) Maine Office of Geographic Information Systems

Contact Position: GIS Coordinator
Contact Address:

Address Type: mailing address
Address: State House Station 145
City: Augusta
State or Province: ME
Postal Code: 04333-0145
Country: USA

Contact Voice Telephone: (207) 624-7700
Contact Facsimile Telephone: (207) 287-3842
Hours of Service: Monday through Friday 0800 - 1700 EST

Distribution Liability: Users must assume responsibility to determine the usability of this data for their purposes.
Standard Order Process:

Digital Form:

Digital Transfer Information:

Format Name: ARCSDE
Format Version Number: ArcSDE 9.x
Format Information Content: Oracle 9i

Digital Transfer Option:

Online Option:

Access Instructions: Please contact the Maine Office of GIS (MEGIS) for access instructions.

Fees: Access is available through Maine's wide area network; WAN users may contact the Maine Office of Information Technology, Maine Office of Geographic Information Systems (MEGIS) for a login.

Metadata Date: 6/16/2009
Metadata Review Date:
Metadata Future Review Date:
Metadata Contact:

Contact Information:

Contact Person Primary:

Contact Person: Michelle Mason Webber
Contact Organization: (MEDMR) Maine Department of Marine Resources

Contact Position: Shellfish Program Coordinator
Contact Address:

Address Type: mailing address
Address: 21 State House Station
City: Augusta
State or Province: ME
Postal Code: 04333
Country: USA

Contact Voice Telephone: 207 624 6570
Contact Facsimile Telephone: 207 624-6015
Contact Electronic Mail Address: michelle.mason@maine.gov
Hours of Service: Monday through Friday 0700 - 1600 EST

Metadata Standard Name: FGDC Content Standards for Digital Geospatial Metadata
Metadata Standard Version: FGDC-STD-001-1998
Metadata Time Convention: local time
Metadata Access Constraints: none
Metadata Use Constraints: none