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Molluscan Shellfish

SDE Feature Class

Tags
aquaculture, Ostrea edulis, biosphere, sea scallop, american oyster, atlantic surf, razor clam, 40000, molluscan shellfish, Maine, commodities, Spisula solidissima, biology, blue mussel, Ensis directus, aquatic habitat, european oyster, Mya arenaria, Crassastrea virginica, Placopectin magellanicus, marine biology, marine environment monitoring, coastal, hard clam, Mytilus edulis, shellfish, molluscan, Gulf of Maine, softshell clam, habitat, oceans, Mercenaria mercenaria


Summary

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.

Description

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.

Credits

Credit should always be given to the data source and/or originator when the data is transferred or printed.

Use limitations

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.

Extent

West  -70.866830    East  -68.703043
North  44.396131    South  43.096281

Scale Range
Maximum (zoomed in)  1:5,000
Minimum (zoomed out)  1:50,000

ArcGIS Metadata 

Topics and Keywords 

Themes or categories of the resource  environment, oceans


*Content type  Downloadable Data


Place keywords  Maine, Gulf of Maine

Thesaurus
Title Maine GIS Thesaurus-Place




Stratum keywords  biosphere, oceans

Thesaurus
Title Maine GIS Thesaurus-Stratum




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

Thesaurus
Title Maine GIS Thesaurus-Theme




Citation 

*Title GISVIEW.MEDMR.American_oysters_phaseI
Publication date 2009-08-25


Presentation formats  digital map
FGDC geospatial presentation format  vector digital data


Series
Name Maine GIS Data Catalog

Citation Contacts 

Responsible party
Organization's name Maine Department of Marine Resources (MEDMR)
Contact's role  originator


Responsible party
Organization's name Maine Office of Geographic Information Systems (MEGIS)
Contact's role  publisher


Contact information
Address
Delivery point Augusta ME



Resource Details 

Dataset languages  English (UNITED STATES)


Status  under development
Spatial representation type  vector


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.
*Processing environment Microsoft Windows Server 2003 Version 5.2 (Build 3790) Service Pack 2; Esri ArcGIS 10.1.1.3143


Credits
Credit should always be given to the data source and/or originator when the data is transferred or printed.
ArcGIS item properties
*Name GISVIEW.MEDMR.American_oysters_phaseI
*Location Server=sql-gisview-prod.som.w2k.state.me.us; Service=sde:sqlserver:sql-gisview-prod.som.w2k.state.me.us,1633; Database=GISVIEW; User=MEDMR; Version=dbo.DEFAULT
*Access protocol ArcSDE Connection

Extents 

Extent
Geographic extent
Bounding rectangle
West longitude -70.634993
East longitude -66.926343
South latitude 43.251035
North latitude 45.17244

Extent
Geographic extent
Bounding rectangle
Extent type  Extent used for searching
*West longitude -70.866830
*East longitude -68.703043
*North latitude 44.396131
*South latitude 43.096281
*Extent contains the resource Yes

Extent in the item's coordinate system
*West longitude 351288.754700
*East longitude 523649.425000
*South latitude 4773127.259500
*North latitude 4915871.780400
*Extent contains the resource Yes

Resource Points of Contact 

Point of contact
Individual's name Michelle Mason Webber
Organization's name (MEDMR) Maine Department of Marine Resources
Contact's position Shellfish Program Coordinator
Contact's role  point of contact


Contact information
Phone
Voice 207 624 6570
Fax 207 624-6015

Address
Type postal
Delivery point 21 State House Station
City Augusta
Administrative area ME
Postal code 04333
Country US
e-mail addressmichelle.mason@maine.gov

Hours of service Monday through Friday 0700 - 1600 EST


Resource Maintenance 

Resource maintenance
Update frequency  irregular


Resource Constraints 

Legal constraints
Limitations of use
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.
Limitations of use
Users must assume responsibility to determine the usability of this data for their purposes.
Other 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.
Constraints
Limitations of use
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.

Spatial Reference 

ArcGIS coordinate system
*Type Projected
*Geographic coordinate reference GCS_North_American_1983
*Projection NAD_1983_UTM_Zone_19N
*Coordinate reference details
Projected coordinate system
Well-known identifier 26919
X origin -5120900
Y origin -9998100
XY scale 10000
Z origin 0
Z scale 1
M origin 0
M scale 1
XY tolerance 0.001
Z tolerance 0.001
M tolerance 0.001
High precision true
Latest well-known identifier 26919
Well-known text PROJCS["NAD_1983_UTM_Zone_19N",GEOGCS["GCS_North_American_1983",DATUM["D_North_American_1983",SPHEROID["GRS_1980",6378137.0,298.257222101]],PRIMEM["Greenwich",0.0],UNIT["Degree",0.0174532925199433]],PROJECTION["Transverse_Mercator"],PARAMETER["False_Easting",500000.0],PARAMETER["False_Northing",0.0],PARAMETER["Central_Meridian",-69.0],PARAMETER["Scale_Factor",0.9996],PARAMETER["Latitude_Of_Origin",0.0],UNIT["Meter",1.0],AUTHORITY["EPSG",26919]]

Reference system identifier
*Value 26919
*Codespace EPSG
*Version 7.11.2


Spatial Data Properties 

Vector
*Level of topology for this dataset  geometry only


Geometric objects
Feature class name GISVIEW.MEDMR.American_oysters_phaseI
*Object type  composite
*Object count 54



ArcGIS Feature Class Properties
Feature class name GISVIEW.MEDMR.American_oysters_phaseI
*Feature type Simple
*Geometry type Polygon
*Has topology FALSE
*Feature count 54
*Spatial index TRUE
*Linear referencing FALSE



Data Quality 

Scope of quality information
Resource level  dataset




Data quality report - Conceptual consistency
Measure description molluscan shellfish is a polygon dataset that provides distribution information for molluscan shellfish for the coast of Maine.




Data quality report - Completeness omission
Measure description The dataset is updated on an irregular schedule.




Data quality report - Quantitative attribute accuracy
Measure description Fields named: Town, County, Species, NOAA_Chart, Updated, Shape, and Source have been maintained and are complete. Other fields may not be complete.




Data quality report - Absolute external positional accuracy
Dimension horizontal


Measure description 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 

Process step
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 contact
Individual's name Michelle Mason Webber
Organization's name (MEDMR) Maine Department of Marine Resources
Contact's position Shellfish Program Coordinator
Contact's role  processor


Contact information
Phone
Voice 207 624 6570
Fax 207 624-6015

Address
Type postal
Delivery point 21 State House Station
City Augusta
Administrative area ME
Postal code 04333
Country US
e-mail addressmichelle.mason@maine.gov

Hours of service Monday through Friday 0700 - 1600 EST




Process step
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 contact
Individual's name Seth Barker
Organization's name (MEDMR) Maine Department of Marine Resources
Contact's position GIS Specialist
Contact's role  processor


Contact information
Phone
Voice (207) 633-9507
Fax (207) 633-9579

Address
Type postal
Delivery point PO Box 8
City West Boothbay Harbor
Administrative area ME
Postal code 04575
Country US
e-mail addressseth.barker@maine.gov

Hours of service Monday through Friday 0800 - 1700 EST




Process step
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 contact
Individual's name Michelle Mason Webber
Organization's name (MEDMR) Maine Department of Marine Resources
Contact's position Shellfish Program Coordinator
Contact's role  processor


Contact information
Phone
Voice 207 624 6570
Fax 207 624-6015

Address
Type postal
Delivery point 21 State House Station
City Augusta
Administrative area ME
Postal code 04333
Country US
e-mail addressmichelle.mason@maine.gov

Hours of service Monday through Friday 0700 - 1600 EST




Process step
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 contact
Individual's name Michelle Mason Webber
Organization's name (MEDMR) Maine Department of Marine Resources
Contact's position Shellfish Program Coordinator
Contact's role  processor


Contact information
Phone
Voice 207 624 6570
Fax 207 624-6015

Address
Type postal
Delivery point 21 State House Station
City Augusta
Administrative area ME
Postal code 04333
Country US
e-mail addressmichelle.mason@maine.gov

Hours of service Monday through Friday 0700 - 1600 EST




Process step
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 contact
Individual's name Michelle Mason Webber
Organization's name (MEDMR) Maine Department of Marine Resources
Contact's position Shellfish Program Coordinator
Contact's role  processor


Contact information
Phone
Voice 207 624 6570
Fax 207 624-6015

Address
Type postal
Delivery point 21 State House Station
City Augusta
Administrative area ME
Postal code 04333
Country US
e-mail addressmichelle.mason@maine.gov

Hours of service Monday through Friday 0700 - 1600 EST




Source data
Source medium name  online link
Resolution of the source data
Scale denominator 24000

Source citation
Title metwp24
Alternate titles  metwp24
Publication date 2007-07-01
Indeterminate time unknown


Presentation formats  digital map
FGDC geospatial presentation format  vector digital data


Series
Name Maine GIS
Issue SDE server; Internet Data Catalog

Other citation details 1:24000


Responsible party
Organization's name Maine Office of Geographic Information Systems
Contact's role  publisher


Contact information
Address
Delivery point Augusta ME



Responsible party
Organization's name Maine Office of Geographic Information Systems (MEGIS)
Contact's role  originator


Resource location online
Locationhttp://megis.maine.gov/catalog/



Extent of the source data
Description
source dates
Temporal extent
Beginning date 1948-01-01
Indeterminate time unknown
Ending date 2005-08-22
Indeterminate time unknown



Source data
Description Local knowledge of molluscan shellfish species locations along the Maine coast


Source citation
Title MEDMR local knowledge
Alternate titles  medmr_loc_knwlg
Publication date
Indeterminate date inapplicable


FGDC geospatial presentation format  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


Responsible party
Organization's name Local knowledge from Maine coastal town officials
Contact's role  originator




Extent of the source data
Temporal extent
Beginning date 2008-02-19
Indeterminate time unknown
Ending date 2009-05-01
Indeterminate time unknown



Source data
Description Base information to which shellfish polygons were referenced.


Source citation
Title NOAA_RNC
Alternate titles  noaa_rnc


Presentation formats  digital map
FGDC geospatial presentation format  raster digital data


Series
Name Raster Navigational Charts: NOAA RNC's

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


Responsible party
Organization's name (NOAA) National Oceanic and Atmospheric Administration
Contact's role  originator


Responsible party
Organization's name National Ocean Service-Office of Coast Survey
Contact's role  publisher


Contact information
Address
Delivery point Silver Springs, MD



Resource location online
Locationhttp://www.nauticalcharts.noaa.gov/staff/charts.htm#RNC



Extent of the source data
Description
publication date


Distribution 

Distributor
Contact information
Organization's name (MEGIS) Maine Office of Geographic Information Systems
Contact's position GIS Coordinator
Contact's role  distributor


Contact information
Phone
Voice (207) 624-7700
Fax (207) 287-3842

Address
Type postal
Delivery point State House Station 145
City Augusta
Administrative area ME
Postal code 04333-0145
Country US

Hours of service Monday through Friday 0800 - 1700 EST


Available format
Name ESRI Shapefile
Version ARC Version 9.x
Specification ArcView Shapefile Format
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/.
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.


Ordering process
Terms and fees Data may be downloaded from Maine GIS Internet Data Catalog at no charge.
Turnaround time Data is available for immediate download from the Maine GIS Internet Data Catalog.



Distributor
Contact information
Organization's name (MEGIS) Maine Office of Geographic Information Systems
Contact's position GIS Coordinator
Contact's role  distributor


Contact information
Phone
Voice (207) 624-7700
Fax (207) 287-3842

Address
Type postal
Delivery point State House Station 145
City Augusta
Administrative area ME
Postal code 04333-0145
Country US

Hours of service Monday through Friday 0800 - 1700 EST


Available format
Name ARCSDE
Version ArcSDE 9.x
Format information content Oracle 9i


Ordering process
Terms and 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.



Distribution format
*Name SDE Feature Class


Transfer options
Online source
Locationhttp://megis.maine.gov/catalog/

Fields 

Details for object GISVIEW.MEDMR.American_oysters_phaseI 
*Type Feature Class
*Row count 54
Definition
polygon attribute table
Definition source
Environmental Systems Research Institute, Inc. (ESRI)


Field OBJECTID_1
 
*Alias OBJECTID_1
*Data type OID
*Width 4
*Precision 10
*Scale 0
*Field description
Internal feature number.
*Description source
Esri
*Description of values Sequential unique whole numbers that are automatically generated.




Field ACRES
 
*Alias ACRES
*Data type Double
*Width 8
*Precision 11
*Scale 1
Field description
Area in acres


Field COUNTY
 
*Alias COUNTY
*Data type String
*Width 50
*Precision 0
*Scale 0
Field description
County name
Description 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


Field NOAA_CHART
 
*Alias NOAA_CHART
*Data type String
*Width 50
*Precision 0
*Scale 0
Field description
Chart number of basemap
Description source
Electronic NOAA chart that contains the feature. Scales vary from 1:20,000 to 1:80,000


Field OBJECTID
 
*Alias OBJECTID
*Data type Double
*Width 8
*Precision 38
*Scale 8
Field description
Internal feature number.
Description source
ESRI
Description of values Sequential unique whole numbers that are automatically generated.




Field SHAPE
 
*Alias Shape
*Data type Geometry
*Width 4
*Precision 0
*Scale 0
Field description
Feature geometry.
Description source
ESRI
Description of values Coordinates defining the features.




Field SOURCE
 
*Alias SOURCE
*Data type String
*Width 30
*Precision 0
*Scale 0
Field description
Contributor
Description 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


Field SPECIES
 
*Alias SPECIES
*Data type String
*Width 50
*Precision 0
*Scale 0
Field description
Species common name
Description source
The molluscan bivalve known as (wil insert scientific name here)


Field TOWN
 
*Alias TOWN
*Data type String
*Width 40
*Precision 0
*Scale 0
Field description
Town name
Description 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


Field UPDATED
 
*Alias UPDATED
*Data type Date
*Width 36
*Precision 0
*Scale 0
Field description
The date the feature's boundaries were last changed


Field SHAPE.area
 
*Alias SHAPE.area
*Data type Double
*Width 0
*Precision 0
*Scale 0




Field SHAPE.len
 
*Alias SHAPE.len
*Data type Double
*Width 0
*Precision 0
*Scale 0






Metadata Details 

Metadata language English (UNITED STATES)
Metadata character set  utf8 - 8 bit UCS Transfer Format


Scope of the data described by the metadata  dataset
Scope name* dataset


*Last update 2013-11-22


ArcGIS metadata properties
Metadata format ArcGIS 1.0


Created in ArcGIS for the item 2011-05-11 12:37:52
Last modified in ArcGIS for the item 2013-11-22 11:25:54


Automatic updates
Have been performed Yes
Last update 2013-11-22 11:25:54


Metadata Contacts 

Metadata contact
Individual's name Michelle Mason Webber
Organization's name (MEDMR) Maine Department of Marine Resources
Contact's position Shellfish Program Coordinator
Contact's role  point of contact


Contact information
Phone
Voice 207 624 6570
Fax 207 624-6015

Address
Type postal
Delivery point 21 State House Station
City Augusta
Administrative area ME
Postal code 04333
Country US
e-mail addressmichelle.mason@maine.gov

Hours of service Monday through Friday 0700 - 1600 EST


Thumbnail and Enclosures 

Thumbnail

Enclosure
Enclosure type  File
Description of enclosure original metadata
Original metadata document, which was translated yes
Source metadata format fgdc

FGDC Metadata (read-only) 

Identification 

Citation
Citation Information
OriginatorMaine Department of Marine Resources (MEDMR)
Publication Date2009-08-25
Title
molluscan_shellfish
Geospatial Data Presentation Formvector digital data
Series Information
Series NameMaine GIS Data Catalog
Publication Information
Publication PlaceAugusta ME
PublisherMaine Office of Geographic Information Systems (MEGIS)
Online Linkagehttp://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
ProgressIn work
Maintenance and Update FrequencyIrregular

Spatial Domain
Bounding Coordinates
West Bounding Coordinate-70.634993
East Bounding Coordinate-66.926343
North Bounding Coordinate45.17244
South Bounding Coordinate43.251035

Keywords
Theme
Theme Keyword ThesaurusMaine GIS Thesaurus-Theme
Theme Keywordmarine environment monitoring
Theme Keywordmarine biology
Theme Keywordmolluscan
Theme Keywordshellfish
Theme Keywordcommodities
Theme Keywordcoastal
Theme Keywordbiology
Theme Keyword40000
Theme Keywordsea scallop
Theme Keywordblue mussel
Theme Keywordrazor clam
Theme Keywordhard clam
Theme Keywordeuropean oyster
Theme Keywordatlantic surf
Theme Keywordamerican oyster
Theme Keywordmolluscan shellfish
Theme Keywordsoftshell clam
Theme Keywordaquaculture
Theme Keywordaquatic habitat
Theme Keywordhabitat
Theme KeywordCrassastrea virginica
Theme KeywordEnsis directus
Theme KeywordMercenaria mercenaria
Theme KeywordMya arenaria
Theme KeywordMytilus edulis
Theme KeywordOstrea edulis
Theme KeywordPlacopectin magellanicus
Theme KeywordSpisula solidissima

Place
Place Keyword ThesaurusMaine GIS Thesaurus-Place
Place KeywordMaine
Place KeywordGulf of Maine

Stratum
Stratum Keyword ThesaurusMaine GIS Thesaurus-Stratum
Stratum Keywordbiosphere
Stratum Keywordoceans

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 PersonMichelle Mason Webber
Contact Organization(MEDMR) Maine Department of Marine Resources
Contact PositionShellfish Program Coordinator
Contact Address
Address Typemailing address
Address21 State House Station
CityAugusta
State or ProvinceME
Postal Code04333
CountryUNITED STATES

Contact Voice Telephone207 624 6570
Contact Facsimile Telephone207 624-6015
Contact Electronic Mail Addressmichelle.mason@maine.gov
Hours of ServiceMonday 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

Data Quality 

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
OriginatorLocal knowledge from Maine coastal town officials
Publication DateUnpublished Material
Title
MEDMR local knowledge
Geospatial Data Presentation Formpaper
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 Date2008-02-19
Beginning TimeUnknown
Ending Date2009-05-01
Ending TimeUnknown
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
OriginatorMaine Office of Geographic Information Systems (MEGIS)
Publication Date2007-07-01
Publication TimeUnknown
Title
metwp24
Geospatial Data Presentation Formvector digital data
Series Information
Series NameMaine GIS
Issue IdentificationSDE server; Internet Data Catalog
Publication Information
Publication PlaceAugusta ME
PublisherMaine Office of Geographic Information Systems
Other Citation Details
1:24000
Online Linkagehttp://megis.maine.gov/catalog/

Source Scale Denominator24000
Type of Source Mediaonline
Source Time Period of Content
Time Period Information
Range of Dates/Times
Beginning Date1948-01-01
Beginning TimeUnknown
Ending Date2005-08-22
Ending TimeUnknown
Source Currentness Reference
source dates
Source Citation Abbreviation
metwp24
Source Information
Source Citation
Citation Information
Originator(NOAA) National Oceanic and Atmospheric Administration
Publication Datemultiple dates
Title
NOAA_RNC
Geospatial Data Presentation Formraster digital data
Series Information
Series NameRaster Navigational Charts: NOAA RNC's
Publication Information
Publication PlaceSilver Springs, MD
PublisherNational 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 Linkagehttp://www.nauticalcharts.noaa.gov/staff/charts.htm#RNC

Type of Source Mediaraster digital data
Source Time Period of Content
Time Period Information
Single Date/Time
Time of DayUnknown
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 Date2007/12/31


Process Contact
Contact Information
Contact Person Primary
Contact PersonMichelle Mason Webber
Contact Organization(MEDMR) Maine Department of Marine Resources
Contact PositionShellfish Program Coordinator
Contact Address
Address Typemailing address
Address21 State House Station
CityAugusta
State or ProvinceME
Postal Code04333
CountryUNITED STATES

Contact Voice Telephone207 624 6570
Contact Facsimile Telephone207 624-6015
Contact Electronic Mail Addressmichelle.mason@maine.gov
Hours of ServiceMonday 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 Date2009/05


Process Contact
Contact Information
Contact Person Primary
Contact PersonMichelle Mason Webber
Contact Organization(MEDMR) Maine Department of Marine Resources
Contact PositionShellfish Program Coordinator
Contact Address
Address Typemailing address
Address21 State House Station
CityAugusta
State or ProvinceME
Postal Code04333
CountryUNITED STATES

Contact Voice Telephone207 624 6570
Contact Facsimile Telephone207 624-6015
Contact Electronic Mail Addressmichelle.mason@maine.gov
Hours of ServiceMonday 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 Date2009/05


Process Contact
Contact Information
Contact Person Primary
Contact PersonMichelle Mason Webber
Contact Organization(MEDMR) Maine Department of Marine Resources
Contact PositionShellfish Program Coordinator
Contact Address
Address Typemailing address
Address21 State House Station
CityAugusta
State or ProvinceME
Postal Code04333
CountryUNITED STATES

Contact Voice Telephone207 624 6570
Contact Facsimile Telephone207 624-6015
Contact Electronic Mail Addressmichelle.mason@maine.gov
Hours of ServiceMonday 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 Date2009/05


Process Contact
Contact Information
Contact Person Primary
Contact PersonMichelle Mason Webber
Contact Organization(MEDMR) Maine Department of Marine Resources
Contact PositionShellfish Program Coordinator
Contact Address
Address Typemailing address
Address21 State House Station
CityAugusta
State or ProvinceME
Postal Code04333
CountryUNITED STATES

Contact Voice Telephone207 624 6570
Contact Facsimile Telephone207 624-6015
Contact Electronic Mail Addressmichelle.mason@maine.gov
Hours of ServiceMonday 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 Date2009/05


Process Contact
Contact Information
Contact Organization Primary
Contact Organization(MEDMR) Maine Department of Marine Resources
Contact PersonSeth Barker
Contact PositionGIS Specialist
Contact Address
Address Typemailing address
AddressPO Box 8
CityWest Boothbay Harbor
State or ProvinceME
Postal Code04575
CountryUNITED STATES

Contact Voice Telephone(207) 633-9507
Contact Facsimile Telephone(207) 633-9579
Contact Electronic Mail Addressseth.barker@maine.gov
Hours of ServiceMonday through Friday 0800 - 1700 EST

Process Step
Process Description
                                Metadata imported.
                              
Source Used Citation Abbreviation
U:\crypt83\metadata\fgdc\molluscan_shellfish.xml
Process Date2009-08-25
Process Time15:03:40


Process Step
Process Description
                                Dataset copied.
                              
Source Used Citation Abbreviation
Server=gisdatabase; Service=esri_vector; User=sdeuser; Version=SDE.DEFAULT
Process Date2011-05-11
Process Time12:37:52


Cloud Cover0


Spatial Reference 

Horizontal Coordinate System Definition
Geodetic Model
Semi-major Axis0
Denominator of Flattening Ratio0

Vertical Coordinate System Definition
Altitude System Definition
Altitude Resolution1.000000
Altitude Encoding MethodExplicit elevation coordinate included with horizontal coordinates

Entities and Attributes 

Detailed Description
Entity Type
Entity Type LabelGISVIEW.MEDMR.American_oysters_phaseI
Entity Type Definition
polygon attribute table
Entity Type Definition SourceEnvironmental Systems Research Institute, Inc. (ESRI)

Attribute
Attribute LabelOBJECTID_1
Attribute Definition
Internal feature number.
Attribute Definition SourceEsri
Attribute Domain Values
Unrepresentable Domain
Sequential unique whole numbers that are automatically generated.

Attribute
Attribute LabelACRES
Attribute Definition
Area in acres

Attribute
Attribute LabelCOUNTY
Attribute Definition
County name
Attribute Definition SourceThe 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 LabelNOAA_CHART
Attribute Definition
Chart number of basemap
Attribute Definition SourceElectronic NOAA chart that contains the feature. Scales vary from 1:20,000 to 1:80,000

Attribute
Attribute LabelOBJECTID
Attribute Definition
Internal feature number.
Attribute Definition SourceESRI
Attribute Domain Values
Unrepresentable Domain
Sequential unique whole numbers that are automatically generated.

Attribute
Attribute LabelSHAPE
Attribute Definition
Feature geometry.
Attribute Definition SourceESRI
Attribute Domain Values
Unrepresentable Domain
Coordinates defining the features.

Attribute
Attribute LabelSOURCE
Attribute Definition
Contributor
Attribute Definition SourceThe 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 LabelSPECIES
Attribute Definition
Species common name
Attribute Definition SourceThe molluscan bivalve known as (wil insert scientific name here)

Attribute
Attribute LabelTOWN
Attribute Definition
Town name
Attribute Definition SourceThe 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 LabelUPDATED
Attribute Definition
The date the feature's boundaries were last changed

Attribute
Attribute LabelSHAPE.area

Attribute
Attribute LabelSHAPE.len

Distribution Information 1 

Distributor
Contact Information
Contact Organization Primary
Contact Organization(MEGIS) Maine Office of Geographic Information Systems
Contact PositionGIS Coordinator
Contact Address
Address Typemailing address
AddressState House Station 145
CityAugusta
State or ProvinceME
Postal Code04333-0145
CountryUNITED STATES

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

Resource DescriptionDownloadable 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 NameESRI Shapefile
Format Version NumberARC 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 TechniqueData 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 .
                                      
FeesData may be downloaded from Maine GIS Internet Data Catalog at no charge.
TurnaroundData is available for immediate download from the Maine GIS Internet Data Catalog.


Distribution Information 2 

Distributor
Contact Information
Contact Organization Primary
Contact Organization(MEGIS) Maine Office of Geographic Information Systems
Contact PositionGIS Coordinator
Contact Address
Address Typemailing address
AddressState House Station 145
CityAugusta
State or ProvinceME
Postal Code04333-0145
CountryUNITED STATES

Contact Voice Telephone(207) 624-7700
Contact Facsimile Telephone(207) 287-3842
Hours of ServiceMonday 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 NameARCSDE
Format Version NumberArcSDE 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.
                                      
FeesAccess 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 Reference 

Metadata Date2009-06-16
Metadata Review Date
Metadata Future Review Date
Metadata Contact
Contact Information
Contact Person Primary
Contact PersonMichelle Mason Webber
Contact Organization(MEDMR) Maine Department of Marine Resources
Contact PositionShellfish Program Coordinator
Contact Address
Address Typemailing address
Address21 State House Station
CityAugusta
State or ProvinceME
Postal Code04333
CountryUNITED STATES

Contact Voice Telephone207 624 6570
Contact Facsimile Telephone207 624-6015
Contact Electronic Mail Addressmichelle.mason@maine.gov
Hours of ServiceMonday through Friday 0700 - 1600 EST

Metadata Standard NameFGDC Content Standards for Digital Geospatial Metadata
Metadata Standard VersionFGDC-STD-001-1998
Metadata Time Conventionlocal time


Metadata Access Constraintsnone
Metadata Use Constraints
none