Items of Interest:

Bighead Carp Caught in East Okoboji Lake Tuesday (Aug 10, 2011)
Iowa Department of Natural Resources.
Bighead carp, has found its way into the Iowa Great Lakes. Two of them were collected during the annual fish sampling effort. Bighead carp were found in the Little Sioux River below the Linn Grove Dam in 1996, and the recent samples collected was the first time bighead carp had been found above that barrier. See What to Do If You Think You Have Found an Asian Carp (2010; PDF | 584 KB).

Stop Aquatic Hitchhikers
Iowa Department of Natural Resources.
The DNR is reminding boaters and anglers to stop and check for unwanted hitchhikers to help protect Iowa's waters.
It is illegal to possess, introduce, purchase, sell or transport aquatic invasive species.

State Specific Threats:

Nonindigenous Aquatic Species List - Iowa or Display NAS by Taxonomic Group (select State)
DOI. USGS. Southeast Ecological Science Center.
Includes fact sheets, maps and collection information.

State Noxious Weed List - Iowa
USDA. NRCS. National Plant Data Center. PLANTS Database.
Designated legally noxious plants.

Status of Invasive Plants - Iowa / Details by State and Details by County
University of Georgia. Center for Invasive Species and Ecosystem Health. Early Detection & Distribution Mapping System.

Pest Tracker - Iowa
USDA. APHIS. Cooperative Agricultural Pest Survey. National Agricultural Pest Information System.

Forest Threat Summary Viewer - Iowa
USDA. FS. Eastern Forest Environmental Threat Assessment Center.
See what threats (invasive plants, insects and diseases) are in my state.

States Restricting Firewood Movement and/or Advocating Leaving Firewood at Home: Who is Affected?
Don't Move Firewood.