Full report - Conservation Gateway

Chapter 2 - Coastal EcosystemsTable 2-2. Attribute Variables for Coastal Shoreline Units (CSU).Category Data Source Measure Subtypes Brief MethodShorelinelength bymajorhabitat typeIntertidalhabitat areaOther CoastalHabitatsOffshore1000 mBufferBenthicHabitatDiversityNOAA EnvironmentalSensitivity Index, 2001-2004. Scale 1:24,000 (US);Provincial Coastline Scale1:24,000 (New Brunswick),1:100,000 (NovaScotia)USFWS National WetlandsInventory, 1970-2008. Scale 1:100,000(US) Provincial WetlandDatasets (New Brunswickand Nova Scotia), 2000.Scale 1:20,000-1:50,000.Various Seagrass Datasets,1968 – 2008. Scale =< 1:24,000State Natural HeritageProgram Element Occurrences2008TNC Ecological MarineUnits (grain size, seabedform, depth) 2009kilometers beach Each shoreline segment was assigned to a CSU toyield a total length for each CSU. For those CSUs inthe US, the segment lengths were then summarizedby the ESI subtype categories. For those CSUs inCanada, the only subtypes included were man-madeand undefined.hectaresunconsolidated shore(sand, gravel, cobble)unconsolidated shore(mud, organic, flat)emergent marsh (vegetatedtidal wetlands)forestedrocky shorescrub-shrubEach polygon was assigned to a given CSU basedon nearest proximity. The total area of each of thehabitat subtypes was then summed for each CSU.hectares seagrass Each polygon was assigned to a given CSU basedon nearest proximity. The total area of each inseagrass was then summed for each CSU.number coastal salt ponds Each point was assigned to a given CSU based onnearest proximity. The total number of coastal saltponds was then summed for each CSU.% of the 1000m buffer zoneDepth Zones0 to -1 m-2 to -3 m-4 to -10 m-11 to -30 m-31 to -100 m-100 m and deeperGrain Sizeclay or siltvery fine sandfine sand fine sand% grain size mediumsandcoarse sandpebblesSeabed FormsDepressionMid FlatHigh FlatLow SlopeHigh SlopeSteep/SideslopeEach CSU shoreline was buffered 1,000 mhorizontally seaward. The Ecological MarineUnits types and depth zones within the bufferwere summarized for each CSU.2-24Northwest Atlantic Marine Ecoregional Assessment • Phase 1 Report