Quantifying Stream Connectivity in Atlantic National Parks

Lay Summary 

The loss of aquatic connectivity due to barriers (e.g., dams, culverts) in stream systems is a widespread problem that can have serious implications for fish populations. We have developed the Dendritic Connectivity Index (DCI) as a tool for quantifying loss of connectivity in stream networks, and for prioritizing barrier removal and mitigation. We are in the process of completing the first field test of the DCI using data from two Canadian national parks and assessing the sensitivity of the DCI to barrier (road culvert) evaluation methods. We are also developing methods to integrate measures of habitat quality. Recent research will take fish data from systems elsewhere in North America (Ontario and upstate New York) to further test the DCI using fish mark-recapture data for a variety of stream systems.

Parks Canada
St. John's
Newfoundland and Labrador
Parks and Natural Areas
Freshwater Fish
Parks and Natural Areas
Industry Sectors 
Fishing, Hunting and Trapping
Scientific Research and Development Services
Start date 
1 Jan 2007
End date 
31 Dec 2012