In checking the FHWA website, the list is of "common" rather than a more comprehensive list. Recognizing that there are regional variants, perhaps a state outline map with presence/absence mapping for species would be useful. Anything to avoid data silos;)

Lyle Browning


On Mar 24, 2011, at 4:14 PM, Davis, Daniel (KYTC) wrote:

> FHWA has a compilation of resources for invasive species on their web
> page at http://www.environment.fhwa.dot.gov/ecosystems/vegmgmt_row.asp 
> They also have a field guide to common roadside invasives, which is
> potentially more useful for biologists - or for figuring out exactly how
> much of your yard is composed of invasive species. I'm at about 60%. 
> 
> Daniel B. Davis
> Archaeologist Coordinator
> Kentucky Transportation Cabinet
> Division of Environmental Analysis
> 200 Mero Street
> Frankfort, KY 40622
> (502) 564-7250
> 
> -----Original Message-----
> From: HISTORICAL ARCHAEOLOGY [mailto:[log in to unmask]] On Behalf Of Lyle
> E. Browning
> Sent: Thursday, March 24, 2011 3:34 PM
> To: [log in to unmask]
> Subject: Re: Vegetation and Historic Sites
> 
> This issue has gone to the list a number of times. Has anyone compiled a
> spreadsheet with invasives and/or site indicators by region or state
> that we could simply add to as we go along?
> 
> Lyle Browning, RPA