View In:
ArcGIS JavaScript
ArcGIS Online Map Viewer
ArcGIS Earth
ArcGIS Pro
Service Description: <div style='text-align:Left;font-size:12pt'><div><div><p><span style='font-size:16pt'><span>Maine's seagrass meadows, particularly eelgrass, form an important marine and estuarine coastal aquatic habitat for the state. Along with other plants, eelgrass forms the base of food production in the sea. Eelgrass provides shelter for juvenile fish, and invertebrates, is a site for primary settlement of the larvae of some bivalve mollusks, and in certain locations helps to stabilize unconsolidated sediments and shorelines. Aerial imagery was acquired during the peak aboveground biomass growing season, typically June to August. Photography was timed near low tides with low wind velocity, and good water clarity. These factors aid in the detection of the subtidal portion a bed. Polygons delineating stands of seagrass were screen digitized and coded using a four category scale of percent cover. Cover Class values: 1 = 0% to 10% cover, 2 = 10% to 40% cover, 3 = 40% to 70% cover, 4 = 70% to 100% cover. Verification was carried out by boat, on foot, and by plane. Though dense patches of seagrass approximately 6 meters in diameter and less can be identified under good conditions and in some cases were mapped, a conservative estimate of the minimum mapping unit is 100-150 square meters depending on the year. </span></span></p></div></div></div>
Map Name: Eelgrass Beds
Legend
All Layers and Tables
Dynamic Legend
Dynamic All Layers
Layers:
Description: Maine's seagrass meadows, particularly eelgrass, form an important marine and estuarine coastal aquatic habitat for the state. Along with other plants, eelgrass forms the base of food production in the sea. Eelgrass provides shelter for juvenile fish, and invertebrates, is a site for primary settlement of the larvae of some bivalve mollusks, and in certain locations helps to stabilize unconsolidated sediments and shorelines. Aerial imagery was acquired during the peak aboveground biomass growing season, typically June to August. Photography was timed near low tides with low wind velocity, and good water clarity. These factors aid in the detection of the subtidal portion a bed. Polygons delineating stands of seagrass were screen digitized and coded using a four category scale of percent cover. Cover Class values: 1 = 0% to 10% cover, 2 = 10% to 40% cover, 3 = 40% to 70% cover, 4 = 70% to 100% cover. Verification was carried out by boat, on foot, and by plane. Though dense patches of seagrass approximately 6 meters in diameter and less can be identified under good conditions and in some cases were mapped, a conservative estimate of the minimum mapping unit is 100-150 square meters depending on the year.
Service Item Id: dfcd9e1d13494b02b77b7c445bd346af
Copyright Text: Maine DEP
Spatial Reference:
26919
(26919)
LatestVCSWkid(0)
Single Fused Map Cache: false
Initial Extent:
XMin: 338098.66450811067
YMin: 4759957.695505006
XMax: 551740.8132684948
YMax: 4938978.860158579
Spatial Reference: 26919
(26919)
LatestVCSWkid(0)
Full Extent:
XMin: 351587.40552831267
YMin: 4768765.4573661005
XMax: 538252.0722482929
YMax: 4930171.098297484
Spatial Reference: 26919
(26919)
LatestVCSWkid(0)
Units: esriMeters
Supported Image Format Types: PNG32,PNG24,PNG,JPG,DIB,TIFF,EMF,PS,PDF,GIF,SVG,SVGZ,BMP
Document Info:
Title: Maine Eelgrass and Seagrass
Author:
Comments: Maine's seagrass meadows, particularly eelgrass, form an important marine and estuarine coastal aquatic habitat for the state. Along with other plants, eelgrass forms the base of food production in the sea. Eelgrass provides shelter for juvenile fish, and invertebrates, is a site for primary settlement of the larvae of some bivalve mollusks, and in certain locations helps to stabilize unconsolidated sediments and shorelines. Aerial imagery was acquired during the peak aboveground biomass growing season, typically June to August. Photography was timed near low tides with low wind velocity, and good water clarity. These factors aid in the detection of the subtidal portion a bed. Polygons delineating stands of seagrass were screen digitized and coded using a four category scale of percent cover. Cover Class values: 1 = 0% to 10% cover, 2 = 10% to 40% cover, 3 = 40% to 70% cover, 4 = 70% to 100% cover. Verification was carried out by boat, on foot, and by plane. Though dense patches of seagrass approximately 6 meters in diameter and less can be identified under good conditions and in some cases were mapped, a conservative estimate of the minimum mapping unit is 100-150 square meters depending on the year.
Subject: Maine's seagrass meadows, particularly eelgrass, form an important marine and estuarine coastal aquatic habitat for the state. Along with other plants, eelgrass forms the base of food production in the sea.
Category:
Keywords: dep,environment,Maine,Maine DEP,MaineDEP,state of maine,biota,BIOLOGY,coastal,submerged aquatic vegetation,Zostera marina,eelgrass,oceans,habitat
AntialiasingMode: Fast
TextAntialiasingMode: Force
Supports Dynamic Layers: true
Resampling: false
MaxRecordCount: 10000
MaxImageHeight: 4096
MaxImageWidth: 4096
Supported Query Formats: JSON, geoJSON, PBF
Supports Query Data Elements: true
Min Scale: 0
Max Scale: 0
Supports Datum Transformation: true
Child Resources:
Info
Dynamic Layer
Supported Operations:
Export Map
Identify
QueryLegends
QueryDomains
Find
Return Updates