Introduced and Cryptogenic Species of the North Atlantic
Interactive Map Site
To report an invader, use the Hitchhhiker's Guide data entry form on our Marine Invader Tracking and Information System.
Rapid Assessment Surveys
In August 2000 and 2003, a team of taxonomic experts examined floating docks and piers
throughout the New England coast to identify native and non-native species.
This rapid assessment survey identified 34 introduced organisms, several of which
were identified for the first time in this region, and 37 organisms whose native
geographic distribution is unknown (referred to as cryptogenic).
A report on this study is available for download (2.2MB PDF file). For more information on the Rapid Assessment Surveys, see the RAS Fact Sheet.
|Carcinus maenus, the
European Green Crab, was introduced to North America in the
1800's. This predator now ranges from Nova Scotia to Delaware.
Photo Credit: Paul Erickson
Invasive Species Maps
The maps available through the link below depict individual sightings of introduced
species (non-native species) and cryptogenic species (species of unknown origin).
They include data from the rapid assessment surveys discussed above, as well as
from the public Hithchhikers Guide program, other research programs, and sightings by
Information on taxonomic grouping,
common name, range, and characteristics for each organism is accessible by clicking
on the scientific name above the map, or by going directly to our species
description pages below.
Rapid Assessment Survey Participants
The following people participated in the 2000 and/or 2003 Surveys:
Major funding for the Rapid Assessment Surveys was provided by:
NOAA National Sea Grant
For more information on this study, or questions, please contact
Dr. Judith Pederson.
These pages are still under development, and not all information will be
immediately available. We welcome your comments and suggestions
as we continue to develop this site.