Invasive Species and Biological Controls

Name: Invasive Species and Biological Controls
Uploaded: 2017-07-06T11:25:53+00:00
Duration: PTM13S31
Channel: Allan Mervin Alexander
Description: Invasive Species and Biological Controls

Invasive Species and Biological Controls

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Invasive Species “An alien species (plant, animal, insect, bacteria, and fungi) whose introduction does or is likely to cause economic or environmental harm or harm to human health". Free template from

Invasive Species Alien species are also known as exotic, non-native, or introduced. The terms noxious, nuisance, or invasive characterize alien species when these organisms cause harm. Free template from

Invasive Species The species that become invasive succeed because the new ecosystem offers favorable environmental conditions & lacks natural predators, competitors, & diseases that normally keep populations in check. Free template from

Invasive Species The cost of preventing, monitoring, & controlling invasive species in the US, and the costs of damage to crops, fisheries, forest, and other resources is $13 billion per year. Free template from

Negative Effects Reducing biodiversity Altering hydrologic conditions Altering soil characteristics Altering fire intensity and frequency Free template from

Negative Effects Interfering with natural succession Competing for pollinators Poisoning or repelling native insects Displacing rare plant species Free template from

Negative Effects Being difficult and/or costly to control Impeding industries and threatening agriculture Posing a significant drain on the economy Free template from

MI Invasive Species Purple Loosestrife Free template from

MI Invasive Species Purple Loosestrife Habitat Marshes, wet meadows, flood plains, and roadside ditches. Aggressive species that covers acres of wetlands and crowds out native aquatics valuable to waterfowl and wildlife. Free template from

MI Invasive Species Purple Loosestrife Loosestrife Defoliating Beetle Free template from

MI Invasive Species Leafy Spurge Free template from

MI Invasive Species Leafy Spurge Introduced from Eurasia, & is a noxious weed difficult to eradicate because of its deeply buried perennial runners. Prevents seedlings of other plants from sprouting by releasing toxins into soil. Free template from

MI Invasive Species Warning Can be toxic if ingested; known to fatally poison cattle. Contact with plant, especially milky sap, can cause irritation of skin, eyes, and mucous membranes. Free template from

Insect Bio Control Leafy Spurge -Black Dot Spurge Flea Beetle Free template from

MI Invasive Species Canada Thistle Free template from

MI Invasive Species Canada Thistle Habitat Pastures, roadsides, waste places. This is a European introduction classified as noxious in most states, because it takes over and does not allow native plants to thrive. Free template from

MI Invasive Species Canada Thistle Thistle Defoliating Beetle Free template from

MI Invasive Species Poison Hemlock Free template from

MI Invasive Species Poison Hemlock Habitat Waste places, weedy areas, and woodland borders. European native, now spread worldwide. Free template from

MI Invasive Species Poison Hemlock Warning All parts of this plant are deadly poisonous if eaten. Children can be poisoned by blowing through whistles made from the stalks. Free template from

MI Invasive Species Poison Hemlock Defoliating Hemlock Moth & Larva Free template from

MI Invasive Species St. Johnswort Free template from

MI Invasive Species St. Johnswort Habitat: Fields, roadsides, and waste places. Discovered in the eastern US in 1793, it appeared in California about 1900 and by 1940 had made 250,000 acres of California rangeland worthless. After 1945 it was quickly controlled by two European beetles that feed only on this species. Free template from

MI Invasive Species St. Johnswort Warning Often used as an herbal remedy. St.-Johnswort can cause extreme sun sensitivity in some individuals. The plant can cause poisoning in animals if eaten in high quantities. Free template from

MI Invasive Species St. Johnswort St. Johnswort Inchworm and Moth Free template from

MI Invasive Species Spotted Knapweed Free template from

MI Invasive Species Spotted Knapweed Habitat Disturbed areas, often along roadsides, waste places, fields. It grows in thick stands, & where it spreads, all vegetation dies out from a poison given off by its roots. Free template from

MI Invasive Species Spotted Knapweed Blunt Knapweed Flowerhead Weevil Free template from

MI Invasive Species Yellow Star Thistle Free template from

MI Invasive Species Yellow Star Thistle Habitat Disturbed areas, pastures, & dry grasslands and hillsides. Native to Europe-Its one virtue is that it produces a fine light honey. Shuts out other native plants. Free template from

MI Invasive Species Yellow Star Thistle Warning This plant grows in dense stands that are painful to walk through because of the piercing spines. If continually eaten, it is poisonous to horses and cattle. Free template from

MI Invasive Species Yellow Star Thistle Yellow Starthistle Hairy Weevil Free template from

MI Invasive Species Yellow Star Thistle Yellow Star Thistle Hairy Weevil Free template from

Invasive Species and Biological Controls

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Invasive Species and Biological Controls

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