Chapter 10 Environmental Science test

What are the 7 great lakes invasive species

• Round Goby, Alewife, Sea Lamprey, Eurasian Watermilfoil, Asian Carp, Purple Loosestrife, Quagga Mussel.

Round Goby

• The Round Goby is a threat to biodiversity, feed on eggs of native species, economic costs (steal bait/ eat eggs of sport fish) threat to human health. It was first discovered in the Saint Clair River in 1990, presumably released during ballast water exchanges of transoceanic ships. It came from Eurasia in the black, Caspian, and Azov seas, and tributaries.

Alewife

• Alewife reduced native fish populations due to competition for zooplankton. It got into Lake Erie by they are able to spread through waterway connections. It came from the Atlantic coasts and it's tributaries.

Sea Lamprey

• Sea Lamprey's attach to fish with their sucking disk and sharp teeth, rasp through scales and skin, and feed on the fish's body fluids, often killing the fish. It gets into Lake Erie through manmade locks and shipping canals. It comes from The Atlantic Ocean.

Eurasian Watermilfoil

• Eurasian Watermilfoil Create "mats" interfere with recreational activities. It got to Lake Erie by the introduction, it has spread across inland lakes and streams, clinging to boats and waterfowl. It came to Europe, Asia, and northern Africa.

Asian Carp

• Asian Carp Create competition; eat native species, craft, can jump six to ten feet out of the water and into moving boats causing, property damage and injuring boaters. Being hit by a jumping Carp is like being hit with a bowling ball. Water skiing and jet skiing become very risky in areas with large numbers of silver carp. It got into Lake Erie by being introduced into aquaculture and wastewater treatment facilities to control alage and accidently escaped into the Mississippi River during floods in the early 1980's. It came from

Purple Loosestrife

• Purple Loosestrife prevents the growth of valuable native plants that provide high nutritional sources for wildlife; impeded water flow in some areas; impacting fish were wild rice is grown and harvested. It got into Lake Erie by being brought to eastern North America by settlers in the early 1800's for ornamental and medical uses. It came from Europe and Asia.

Quagga Mussel

• Quagga Mussels are foul water intake pipes from waterside industries such as power and water facilities. The chemical contaminants inside of them can spread up the food chain. It got into Lake Erie in the ballast water ships. It came from Eastern Europe and Western Asia in the Black, Azov, and Caspian Sea drainages.