Inland Coastal Zone Corridor Network and Vulnerability to Invasive Phragmites
Dates
Start Date
2010-09-09
Summary
This network of inland streams, wetlands and water bodies is a composite of two layers from the National Hydrography Dataset Plus (NHD+ flow lines and water bodies), and all available wetlands from the National Wetlands Inventory (NWI) and Wisconsin Wetlands Inventory (WWI). In combination, these layers provide a network template of inland corridors for assessing relative vulnerability to future invasions of Phragmites.
Summary
This network of inland streams, wetlands and water bodies is a composite of two layers from the National Hydrography Dataset Plus (NHD+ flow lines and water bodies), and all available wetlands from the National Wetlands Inventory (NWI) and Wisconsin Wetlands Inventory (WWI). In combination, these layers provide a network template of inland corridors for assessing relative vulnerability to future invasions of Phragmites.
Direct questions and requests to the Principal Investigator.
Purpose
Line and polygon representations of streams, rivers, wetlands and water bodies were combined in order to produce a single gridded representation of a corridor network for potential future Phragmites invasions. This network was weighted by proximity to existing Phragmites (euclidian distance) in order to provide a relative vulnerability index that shows feature connectivity with existing Phragmites populations. This inland network is intended to be used in conjunction with simulated coastal corridors exposed by reduced lake levels, also weighted by proximity to existing Phragmites, and estimates of the relative habitat suitability in order to produce vulnerability assessments of future invasion likelihood. Combining the notions of habitat suitability and proximity-based vulnerability will provide land managers with a robust tool to maximize the benefits per unit cost of different control effort strategies and identify areas that are key for early detection monitoring and eradication efforts.
