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Copy of Invasive Species

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on 22 November 2016

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Transcript of Copy of Invasive Species

Characteristics of Invasive Species
Emerald Ash Borer
Didymo
Purple Loosestrife
Ecological Impacts
What Are
Invasive Species
Live in a variety of habitat conditions
Grow and reproduce rapidly
Compete for resources with native species
Lack natural enemies or pests in the new ecosystem
Have longer photosynthetic periods
Alter soil and habitat conditions
Originated: Asia
Causes of Invasive Species
Affected: Southwestern Ontario
How it affected the trees
What has been done to control the species
Invasive species are the organisms that are non-native, meaning that they came from other countries or regions. They are capable of causing environmental, economic, and human harm
Gypsy Moth
Round Goby
Affected: North America
What is it?
How it affects the ecosystem
Interesting facts
Originated: North America
Human activities
(trade, transport, travel, tourism)
-help control a native species that is considered a pest
-accidentally moving them through transportation or trade
Originated: Europe
Affected: Canada
How it affects other organisms
How can you help to control it
Interesting facts
Invasive
Species
-importing ornamental plants to buy or sell
Some ornamental plants can escape into the wild and become invasive.

-importing animals as pets
Some invasive species are intentionally or accidentally released pets.
Disrupts food webs
Degrades habitat
Introduce parasites and disease that lead species at risk
Displace native species
Reduce forest health and productivity
The Methods of Removing Invasive Species
1. Manual removal
-Trapping animals
2. Mechanical removal
-Mechanical skimming for algae
3. Chemical control
-Using pesticides
4. Biological control
Using a predator or disease-causing organisms
5. Prescribed burning
6. Grazing (With cows or sheeps)
Direct Threats
Preying on native species
Competition for food resources between native and invasive species
Preventing native species to breed or reproduce
Killing the offspring of native species
Indirect Threats
Destroying and replacing food resources
Altering the abundance of diversity of species
Changing the conditions in an ecosystem (soil chemistry, the intensity of wildlife)
Economic Impacts
Reduce yields of agricultural crops, forests, and fisheries
Decrease water availability
Cause costly land degradation
Block transport routes
Contribute to social instability and spread of disease
Expanding Global Economy
15 invasive Plant species have cost the US economy $603 million over 85 years
$100 million is spent annually to control aquatic weeds alone
Cost the US economy $138 billion annually, with invasive plants making up $34.7 billion
Weeds cost $1.5 billion every year
Purple loosestrife costs $45 million annually
The cost to keep the water clear of zebra mussels from 1990 to 2000 was estimated at $44 million.
The total estimated impact is over $5 billion.
What Can You Do?
1. Gardening
-Avoid buying or growing plants that are invasive, such as purple loosestrife
-Avoid buying and planting mixtures of seeds, because they may contain invasive species

2. Fishing
-Never transport water, animals, or plants to different waterbody

3. Pets
-Buy from respectable dealers whose non-native pets are properly labeled and legally imported
Link to DEC
http://www.dec.ny.gov/animals/54244.html
Full transcript