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SDE Feature Class
Tags
commodities, molluscan shellfish, shellfish, habitat, marine biology, 40000, biology, aquatic habitat, molluscan, coastal, marine environment monitoring, public health, biotoxin, red tide, phytoplankton, environment, oceans, planningCadastre, health
Historical data regarding shellfish harvest area biotoxin closures can be helpful tools for planning activities. Data at this scale is suitable for use in generalized studies and local planning.
ARCHIVE_BIOTOXIN is a polygon dataset that contains historical shellfish harvest area biotoxin closure information for the coast of Maine . Polygons are based on legal boundary descriptions and describe polygons that were in effect from January 1, 2001 to December 31, 2013. POLYGON codes include: D_Approved, D_Repealed, Toxin, Type, Exec_Allow, SS_Clam, Mussel, O_Quahog, N_Quahog, Surf_Clam, A_Oyster, E_Oyster, C_Whelks, C_Snails, Scallop, Conchs, W_Whelk, All_Clams, and ACRES. A COMMENT field provides additional information on a polygon's boundary description, harvest or species information, or the time that it went into effect. Large-scale polygons were clipped to the Maine three-mile territory line to simplify the layer's presentation. The polygons were also clipped to the "24K coast poly" layer, in order to obtain the number of coastal water acres impacted by closure areas. Several ocean quahog exception boxes outside of the three-mile territory line were retained, as were polygons surrounding Mount Desert Rock. These polygons were included in the layer to maintain completeness of the data. If a person desires a copy of the complete, large-scale historical layer; please contact the Department and ask for a copy of the "BIOTOXINwhole" layer.
Credit should always be given to the data source and/or originator when the data is transferred or printed.
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. Large-scale polygons were clipped to the Maine three-mile territory line to simplify the layer's presentation. The polygons were also clipped to the "24K coast poly" layer, in order to obtain the number of coastal water acres impacted by closure areas. Several ocean quahog exception boxes outside of the three-mile territory line were retained, as were polygons surrounding Mount Desert Rock. These polygons were included in the layer to maintain completeness of the data. If a person desires a copy of the complete, large-scale historical layer; please contact the Department and ask for a copy of the "BIOTOXINwhole" layer.
Extent
| West | -70.898213 | East | -66.870640 |
| North | 45.204850 | South | 42.909618 |
| Maximum (zoomed in) | 1:5,000 |
| Minimum (zoomed out) | 1:150,000,000 |
Credit should always be given to the data source and/or originator when the data is transferred or printed.
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. Large-scale polygons were clipped to the Maine three-mile territory line to simplify the layer's presentation. The polygons were also clipped to the "24K coast poly" layer, in order to obtain the number of coastal water acres impacted by closure areas. Several ocean quahog exception boxes outside of the three-mile territory line were retained, as were polygons surrounding Mount Desert Rock. These polygons were included in the layer to maintain completeness of the data. If a person desires a copy of the complete, large-scale historical layer; please contact the Department and ask for a copy of the "BIOTOXINwhole" layer.
polygon attribute table
Environmental Systems Research Institute, Inc. (ESRI)
Internal feature number.
Esri
Internal feature number.
ESRI
Area of polygon's coastal water coverage in acres
Originator
Includes blue mussel (Mytilus edulis) and horse mussel (Modiolus modiolus). If field contains a zero, the species isn't included in the polygon: if field contains a "1", species is included in the polygon.
Originator
Includes sea scallop (Placopecten magellanicus) and Atlantic bay scallop (Argopecten irradians). If field contains a zero, the species isn't included in the polygon: if field contains a "1", species is included in the polygon.
Originator
Also known in Maine as a "hen" clam:(Spisula solidissima). If field contains a zero, the species isn't included in the polygon: if field contains a "1", species is included in the polygon.
Originator
Number designation for the legal notice that contains the polygons
Originator
Date the legal notice containing the polygon was created.
Originator
Date the legal notice containing the polygon was repealed. "Null" means the legal notice was still in effect as of the last update to the layer.
Originator
Additional detail regarding problems in text of legal notice, times of legal notice signing on same day, closure # changes
Originator
Feature geometry.
ESRI
Softshell clam (Mya arenaria). If field contains a zero, the species isn't included in the polygon: if field contains a "1", species is included in the polygon.
Originator
Ocean quahog (also known as mahogany quahog): (Arctica islandica). If field contains a zero, the species isn't included in the polygon: if field contains a "1", species is included in the polygon.
Originator
Northern quahog (also known as hard clam): (Mercenaria mercenaria). If field contains a zero, the species isn't included in the polygon: if field contains a "1", species is included in the polygon.
Originator
American oyster (also known as Eastern oyster): (Crassostrea virginica). If field contains a zero, the species isn't included in the polygon: if field contains a "1", species is included in the polygon.
Originator
European oyster (also known as flat oyster):(Ostrea edulis). If field contains a zero, the species isn't included in the polygon: if field contains a "1", species is included in the polygon.
Originator
Includes dogwinkle (Thais lapillus), Stimpson's whelk (Colus stimpsoni), Ten-ridged whelk (Neptunea decemcostata), and Waved whelk (Buccinum undatum). If field contains a zero, the species aren't included in the polygon: if field contains a "1", the species are included in the polygon.
Originator
Includes moon snail (Lunatia heros). If field contains a zero, the species isn't included in the polygon: if field contains a "1", species is included in the polygon.
Originator
Includes Muricidae and Buccinidae species. If field contains a zero, these species aren't included in the polygon: if field contains a "1", these species are included in the polygon.
Originator
Waved whelk (Buccinum undatum). If field contains a zero, the species isn't included in the polygon: if field contains a "1", species is included in the polygon.
Originator
Includes softshell clams (Mya arenaria), surf clam (Spisula solidissima), Atlantic razor clam (Ensis directus), northern quahog (Mercenaria mercenaria). If field contains a zero, these species aren't included in the polygon: if field contains a "1", these species are included in the polygon.
Originator
Provides additional information regarding the exception species or conditions imposed on harvest.
Originator
"B"=banned species in polygon: "E" = species excepted for harvest in polygon.
Originator
Indicates the possible type of shellfish poisoning that may result from ingesting shellfish with a specific toxin: PSP"=paralytic shellfish poisoning; "ASP"=amnesic shellfish poisoning; "DSP"=diarrheic shellfish poisoning: "Tetramine"=tetramine poisoning.
Originator