Harmful Non Native Species

Topics: Colorado River, Arizona, Fern Pages: 3 (783 words) Published: September 12, 2011
Research on Harmful Non Native Species
Wayne Mulhern
Everest College

My research is on a plant called: Giant Salvinia (Salvinia molesta). This plant has been here for a long time. We just don’t know how long it has been here. The Study of this plant goes back since 1975 when it first has been studied by other environmentalists. No other studies have been recognized by length of time. The Giant Salvinia is a wild plant that can be grown in waters. The growth of the Giant Salvinia is very aggressive and competitive species that can impact aquatic environments; it also can damage local economies and human health. The plant grows really fast in weeks it populates very quickly. This plant live biomass weights approach those recorded for water-hyacinth. Growth results in complete coverage of water surfaces which degrades natural habitats in many ways. Heavy growth of giant Salvinia adds with shades desirable native vegetation. Mats of floating plants prevent atmospheric oxygen from entering the water while decaying Salvinia drops to the bottom, greatly consuming dissolved oxygen needed by fish and other aquatic life (Thomas, 1986). My thesis is how the Giant Salvinia plant destroys the ecosystems. Also it affects the animal habitats, when it is not notices in the bodies of large water areas by bird that can fly over the plant; the birds can see of notice the water bodies or well stop due to the coverage of the Giant Salvinia Plants. The loss of open water in the marsh areas has stopped local waterfowl guides to question the economic benefits of renewing hunting leases. Local fishermen have found it impossible to cast into smothered lakes and are abandoning spots once fished for bass, crappie and sunfish. Toledo Bend residents have gone from engine boats to paddling boats out docks after slipping clutches and stalling engines on packing in plants. Giant Salvinia clogs water intakes to interfere with agricultural irrigation and electrical generation (Thomas, 1986)....

References: Wright, R. T. (2011). Environmental Science: Toward a Sustainable Future. San Francisco, Ca: Pearson Benjamin Cummings.
ANS Task Force; the U.S. Fish and Wildlife Service; Wild Life and the U.S. Coast Guard (2011). (www.protectyourwaters.net/az/species.php). Arizona’s Top Ten Unwanted Species. Yuma, Az.
Thomas, R. (1986). Giant Plant: Giant Salvinia. Yuma, Az.
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