Name: Eelgrass 1997
Display Field: LOCATION
Type: Feature Layer
Geometry Type: esriGeometryPolygon
Description: Eelgrass 197 contains polygons representing Maine's eelgrass meadows, which form an important aquatic habitat for the state, suitable for mapping at 1:24,000 scale. These meadows provide shelter for juvenile fish, and invertebrates. In certain locations they also help stabilize unconsolidated sediments and shorelines. As a continuing project, sections of the coast have been flown and photographed using Kodak 2448 film at a scale of 1:12000. This photography has been supplemented in the Penobscot Bay region by 1992 flights using Kodak 2445 film. The Penobscot Bay flights were contracted by the Maine Department of Transportation and interpreted by Dr. Fred Short of University of New Hampshire. Areas in the present study were flown in the July to October period during 1993 to 1997. When possible, photography was at the time of extreme low tides, low wind velocity, good water clarity, and maximum biomass of eelgrass. These factors aid in the detection of the subtidal portion a bed. Transparencies from the 1993-1997 flights were oriented beneath and eelgrass bed locations compiled on stable-base manuscripts containing the coastline and other basemap features from the 1:24000 scale USGS topographic maps. Polygons delineating stands of eelgrass were digitized and coded using a four category scale of percent cover. Verification has been carried out by boat, on foot, and by plane. Though dense patches of eelgrass approximately 6 meters in diameter and less can be identified under good conditions, a conservative estimate of the minimum mapping unit is 150 square meters. This represents a stand of approximately 14 meters in diameter.
Service Item Id: a7737641219046c29b8f783995d96e09
Copyright Text: Credit should always be given to the data source and/or originator when the data is transferred or printed.
Default Visibility: true
MaxRecordCount: 2000
Supported Query Formats: JSON, geoJSON
Min Scale: 0
Max Scale: 0
Supports Advanced Queries: true
Supports Statistics: true
Has Labels: false
Can Modify Layer: true
Can Scale Symbols: false
Use Standardized Queries: true
Supports Datum Transformation: true
Extent:
XMin: 351587.40546875075
YMin: 4768805.098281249
XMax: 659354.4054687507
YMax: 4997129.4315625
Spatial Reference: 26919
(26919)
Drawing Info:
Renderer:
Unique Value Renderer:
Field 1: COVER
Field 2: null
Field 3: null
Field Delimiter: ,
Default Symbol:
Default Label: null
UniqueValueInfos:
-
Value: 1
Label: 0-10%
Description:
Symbol:
Style: esriSFSSolid
Color: [165, 254, 164, 255]
Outline:
Style: esriSLSSolid
Color: [0, 0, 0, 255]
Width: 0
-
Value: 2
Label: 10-40%
Description:
Symbol:
Style: esriSFSSolid
Color: [0, 255, 0, 255]
Outline:
Style: esriSLSSolid
Color: [0, 0, 0, 255]
Width: 0
-
Value: 3
Label: 40-70%
Description:
Symbol:
Style: esriSFSSolid
Color: [2, 219, 0, 255]
Outline:
Style: esriSLSSolid
Color: [0, 0, 0, 255]
Width: 0
-
Value: 4
Label: 70-100%
Description:
Symbol:
Style: esriSFSSolid
Color: [1, 129, 0, 255]
Outline:
Style: esriSLSSolid
Color: [0, 0, 0, 255]
Width: 0
-
Value: 5
Label: Not Categorized
Description:
Symbol:
Style: esriSFSSolid
Color: [1, 99, 0, 255]
Outline:
Style: esriSLSSolid
Color: [0, 0, 0, 255]
Width: 0
Transparency: 50
Labeling Info:
Advanced Query Capabilities:
Supports Statistics: true
Supports OrderBy: true
Supports Distinct: true
Supports Pagination: true
Supports TrueCurve: true
Supports Returning Query Extent: true
Supports Query With Distance: true
Supports Sql Expression: true
Supports Query With ResultType: false
Supports Returning Geometry Centroid: false
Supports Binning LOD: false
Supports Query With LOD Spatial Reference: false
HasZ: false
HasM: false
Has Attachments: false
HTML Popup Type: esriServerHTMLPopupTypeAsHTMLText
Type ID Field: null
Fields:
-
OBJECTID_1
(
type: esriFieldTypeOID, alias: OBJECTID_1
)
-
OBJECTID
(
type: esriFieldTypeInteger, alias: OBJECTID
)
-
COVER
(
type: esriFieldTypeInteger, alias: COVER
)
-
LOCATION
(
type: esriFieldTypeString, alias: LOCATION, length: 6
)
-
ACRES
(
type: esriFieldTypeDouble, alias: ACRES
)
-
HECTARES
(
type: esriFieldTypeDouble, alias: HECTARES
)
-
Year97
(
type: esriFieldTypeSmallInteger, alias: Year97
)
-
Shape
(
type: esriFieldTypeGeometry, alias: Shape
)
-
Shape.STArea()
(
type: esriFieldTypeDouble, alias: Shape.STArea()
)
-
Shape.STLength()
(
type: esriFieldTypeDouble, alias: Shape.STLength()
)
Supported Operations:
Query
Query Attachments
Generate Renderer
Return Updates
Iteminfo
Thumbnail
Metadata