Invasive Species: What to Watch out for in Lake of the Ozarks

Invasive species are a significant concern in multiple ecosystems, including the Chesapeake Bay and the Atlantic Ocean. Lake of the Ozarks, located in central Missouri, is no exception. This vast reservoir, formed by the impoundment of the Osage River, is a popular destination for recreation, tourism and fishing. 

Like the Mississippi River and Lake Havasu, it faces challenges from various invasive species that have found their way into its waters. To avoid transporting invasive species on your boat or trailer, check out some of these creatures to watch out for while cruising about from private boat docks for rent. 

Zebra Mussel

Photo: Wikimedia/Amy Benson/CC by SA 1.0

The zebra mussel (Dreissena polymorpha) is one of the most notorious invaders in the Lake of the Ozarks region. These small fingernail-sized mollusks are prolific breeders and can quickly colonize hard surfaces such as rocks, private boat dock rentals and boat hulls. Zebra mussels can clog water intake pipes, disrupt native ecosystems and outcompete native mussel species for resources. Their presence in Lake of the Ozarks has necessitated costly management efforts to control their spread and mitigate their impacts on infrastructure and biodiversity.

Asian Carp

Photo: Wikimedia/USFWS-Mountain Prairie/CC by SA 2.0 (silver carp)

Another invasive species of concern is the Asian carp, particularly the silver carp (Hypophthalmichthys molitrix) and the bighead carp (Hypophthalmichthys nobilis). These large and fast-growing fish were introduced to control algae and parasites in aquaculture ponds. They have since escaped into the wild and spread rapidly throughout the Mississippi River basin, including the tributaries of Lake of the Ozarks. 

Asian carp are known for their ability to outcompete native fish species for food and habitat. They also pose a threat to recreational boaters sailing out from private boat slips for rent. This is due to their tendency to leap out of the water when startled by noise, which can potentially cause injuries and damage. 

Aquatic Plants

Photo: Wikimedia/Fungus Guy/CC by SA 3.0

Invasive plants such as Eurasian watermilfoil (Myriophyllum spicatum) and hydrilla (Hydrilla verticillata) have been documented in the lake, causing problems at private boat slips for rent and out on the waterways. These submerged aquatic plants can form dense mats, impeding navigation, and reducing biodiversity by shading out native vegetation and altering habitat structure.

Be aware of these invasive species before heading out from marinas or private boat lift rentals. Happy boating!