Confluence Retirement

Due to the feedback from stakeholders and our commitment to not adversely impact USGS science activities that Confluence supports, we are extending the migration deadline to January 2023.

In an effort to consolidate USGS hosted Wikis, myUSGS’ Confluence service is targeted for retirement. The official USGS Wiki and collaboration space is now SharePoint. Please migrate existing spaces and content to the SharePoint platform and remove it from Confluence at your earliest convenience. If you need any additional information or have any concerns about this change, please contact myusgs@usgs.gov. Thank you for your prompt attention to this matter.
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Comment: 5 New Great Lakes Aquatic Invasive Species Announced

Five New Great Lakes "Least Wanted" Aquatic Invasive Species Announced

The Great Lakes St. Lawrence Governors & Premiers today announced five additions to the list of “least wanted” aquatic invasive species. In 2013, the Governors and Premiers released the first list of 16 “least wanted” aquatic invasive species (AIS) that present a serious threat to the Great Lakes St. Lawrence Basin. Since then, the region’s eight states and two provinces have taken more than 40 actions to prohibit or restrict these high-risk species, including the Asian carp. The new “least wanted” AIS include:

  • Tench Tinca tinca
  • Marmorkreb (marbled crayfish) Procambarus fallax forma virginalis
  • New Zealand mud snail Potamopyrgus antipodarum
  • European frogbit Hydrocharis morsus-ranae
  • Yellow floating heart Nymphoides peltata

State and provincial AIS and fisheries experts, in conjunction with leading regional researchers, identified these five AIS as posing a high risk of invasion or spread within the region. The Governors and Premiers will take aggressive action and work with regional partners to prevent the spread of these aquatic invaders.

AIS cost the U.S. and Canada billions of dollars in damages each year, are a burden on the economy, and strain state, provincial and federal budgets. They pose a threat to human health and cause immeasurable ecological damage to native species, with consequences for our region’s sport and commercial fisheries, tourism and recreation. More than 180 nonnative species have been introduced into the Great Lakes and St. Lawrence River.

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The Great Lakes St. Lawrence Governors & Premiers unites the chief executives from Illinois, Indiana, Michigan, Minnesota, New York, Ohio, Ontario, Pennsylvania, Québec, and Wisconsin. The Governors and Premiers work as equal partners to grow the region’s $6 trillion economy and protect the world’s largest system of surface fresh water. 

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