Sleeper Species: Increasing Threats to Great Lakes Ecological Security and What to Do About It

The document examines the risk of 'sleeper species'—non-native species that remain inconspicuous until environmental shifts, often driven by climate change, trigger rapid population growth. Focusing on the Laurentian Great Lakes, it details how vectors like ballast water and recreational boating introduce these species and highlights the economic and ecological damage caused by examples like zebra mussels and spiny water fleas. The brief advocates for a shift toward prevention and early detection through international collaboration, unified regulatory frameworks for shipping, and citizen science engagement to mitigate the rising costs of biological invasions.

• Climate change increases the risk of 'sleeper species' eruptions by creating more frequent and intense weather fluctuations that breach environmental thresholds, potentially tipping entire ecological systems into alternative states.
• International trade and shipping are the primary drivers of invasions in the Great Lakes; between 1959 and 2006, approximately one new species was introduced every six to seven months.
• The zebra mussel, introduced via ballast water from Eastern Europe and Western Russia, causes the Great Lakes region an estimated $300–500 million in annual damages and maintenance costs.
• The spiny water flea serves as an example of a sleeper species that erupted in Lake Mendota, Wisconsin, after crossing a thermal threshold; the cost to restore water clarity in that lake was estimated at $86-163 million.
• The gloomy scale insect is identified as a sleeper species in the Midwest, where urban heat islands create suitable environments for the insect to thrive and threaten urban tree canopies used to combat heat stress.
• Current ballast water management is hindered by a lack of a cohesive regulatory framework, as operators face differing regulations between the US Coast Guard (USCG), the US Environmental Protection Agency (EPA), and individual Great Lakes states.
• Prevention is the most cost-effective strategy for managing invasive species, as the economic costs of addressing an invasion grow significantly as the occupied area increases.

APA

The Council on Strategic Risks (2024). Sleeper Species: Increasing Threats to Great Lakes Ecological Security and What to Do About It. https://councilonstrategicrisks.org/2024/07/16/sleeper-species-increasing-threats-to-great-lakes-ecological-security-and-what-to-do-about-it/

Chicago

The Council on Strategic Risks. Sleeper Species: Increasing Threats to Great Lakes Ecological Security and What to Do About It. 2024. https://councilonstrategicrisks.org/2024/07/16/sleeper-species-increasing-threats-to-great-lakes-ecological-security-and-what-to-do-about-it/.

Wikipedia

{{cite report |author=The Council on Strategic Risks |title=Sleeper Species: Increasing Threats to Great Lakes Ecological Security and What to Do About It |date=16 July 2024 |url=https://councilonstrategicrisks.org/2024/07/16/sleeper-species-increasing-threats-to-great-lakes-ecological-security-and-what-to-do-about-it/ |access-date=23 October 2026 |via=Climate Insights Directory}}

BibTeX

@techreport{thecouncilonstrategicrisks2024sleeper, author = {{The Council on Strategic Risks}}, title = {{Sleeper Species: Increasing Threats to Great Lakes Ecological Security and What to Do About It}}, institution = {The Council on Strategic Risks}, year = {2024}, month = jul, url = {https://councilonstrategicrisks.org/2024/07/16/sleeper-species-increasing-threats-to-great-lakes-ecological-security-and-what-to-do-about-it/}, urldate = {2026-10-23}, note = {Indexed by Climate Insights Directory} }