Description

This dataset is comprised of eight files related to salt marsh monitoring data or measures of of human disturbance (i.e. human impacts in terms of physical, chemical, and land-use stressors) collected at 33 marsh study units (MSUs) in five National Parks within the NPS Northeast Coastal and Barrier Network (NCBN) along the northeastern coast of the US. Two files contain data related to the species and coverage of salt marsh vegetation observed in MSUs (1 data file, 1 definitions file). Two files contain data related to the species and abundance of nekton collected from creeks, pools and ditches in MSUs (1 data file, 1 definitions file). Two files contain data related to the height of key salt marsh vegetation species observed in MSUs (1 data file, 1 definitions file). Two files contain data related to metrics describing the degree of human disturbance in MSUs (1 data file, 1 definitions file). Salt marsh monitoring data were generally collected from 2008-2013; however, salt marsh monitoring data were collected irregularly between 1997 and 2007 as part of a pilot program in a small number of the MSUs. Human disturbance metrics were derived from existing aerial imagery and the 2006 National Land Cover Database.

Resources

Name	Format	Description	Link
	55	Landing page for access to the data	http://dx.doi.org/10.5066/F7ZP449D
	55	The metadata original format	https://data.usgs.gov/datacatalog/metadata/USGS.586e4e2ce4b0f5ce109fcb6d.xml

Development of a Multimetric Index (MMI) for Integrated Assessment of Salt Marsh Ecosystem Condition_NCBN Vegetation & Nekton Data

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