Full report - Conservation Gateway

Chapter 2 - Coastal EcosystemsTable 2-3. Condition variables for Coastal Shoreline Units (CSU).Category Data Source Measure Subtypes Brief MethodMan-madeshorelineNNOAA EnvironmentalSensitivity Index, 2001-2004.Scale 1:24,000 (for US);Provincial Coastline Scale1:24,000 (for New Brunswick),1:100,000 (for NovaScotia); US land cover: EPANational Land Cover Dataset,2001; New Brunswickand Nova Scotia: DNRE.Generalized 1:10,000 foreststand data c. 1990s% of totalCSU lengthbeachFor the non-Maine part of the US coast, thelength of “man-made” was summarized foreach CSU based on source NOAA ESI line typecoding. Special processing was done to assigna “man-made” class in Maine and Canada,where no man-made shoreline types hadbeen assigned by NOAA or other sources. Theprocessing method included overlapping thedeveloped land cover cells with the shorelinesto identify sections of the shoreline that wereadjacent to developed lands, and thus likely“man-made” shorelines.United States land cover:EPA National Land CoverDataset, 2001; EPAImpervious SurfaceDataset, 2001% of total landarea in wholeupstreamwatershed% developed (residential,commercial, transportation,and quarries)% agriculture (row cropsand pasture)% natural (includingbarren)The full upstream watershed for each CSUwas delineated using Basin Delineator Tooldistributed with the USGS National HydrographyPlus dataset. Inputs to the tool for each CSUincluded all reaches with their outflow within100 m of the CSU shoreline. The land covertypes within the delineated full watershed werethen summarizedfor each CSU.% impervious surfaceEutrophication(for US only)NOAA National EstuarineEutrophication Assessment,1999, 2004 updateReporting ofNOAA metricsin the primaryand secondaryEcologicalDrainage Unitassociated witheach CSUNOAA NEEA 1999overall eutrophicationNOAA NEEA 1999influencing factor oneutrophication (humaninfluence)NOAA NEEA 1999projected changes ineutrophic conditionsthrough 2020 based onprojected populationgrowth and susceptibilityThe NOAA NEEA dataset was provided at theEstuarine Drainage Area (EDA) watershed unitscale. These EDA units did not overlap one toone with our CSUs. To summarize the NEEAdata by CSU, we joined each CSU componentarc to the nearest EDA. The percent of the totalCSU shoreline length occurring in each EDAwas then calculated. The four eutrophicationsubtype metrics of interest were reported forthe primary EDA with which each CSU wasassociated. For CSUs crossing more than oneEDU, the four eutrophication subtype metricsof interest were also reported for the secondaryEDA with which each CSU was associated.NOAA NEEA 2004update to overalleutrophicationNorthwest Atlantic Marine Ecoregional Assessment • Phase 1 Report 2-25