Spread
What is the main human activity that contributes to the spread of invasive species?
Transportation of goods/people
Why is it a problem that invasive species cut down on biodiversity?
Biodiversity allows the ecosystem to be balanced.
What are the three most effective methods for controlling invasive species?
Chemical
Biological
Mechanical
Weather and climate also affect the spread of invasive species. Name one way it affects invasive species?
Extreme weather causing stress for native species
Melting ice gives new shipping routes
Increased carbon dioxide increases herbicide resistance
What are some ways humans get affected by invasive species?
If the environment and ecosystem is out of control, the water supply and human agriculture is at risk as well.
or
We can directly be affected because of attacks.
Ex. Mosquitos
Give one example of invasive species management benefits.
Having healthier & balanced ecosystems is best for the quality of Earth, but it also saves us money from damages.
Saves biodiversity
Reduces the alteration of wildlife habitats around the world
What are the plants grown for display and appeal rather than function?
Ornamental plants
What is one effect of Feral pigs or Feral Swine have on humans?
Eat crops
Trample on crops
Spread diseases on crops
DOUBLE JEOPARDY: What is another plant type of management method that was not on our slides?
Fire Management
Cultural Management
Prevention
Grazing of Animals
Ecological Restoration
Soil Sterilization
Invasive species are what kind of species usually?
r-selected or k-selected?
Invasive species are predominantly r-selected, with their fast reproduction rate, they could overwhelm native species with just numbers.
DOUBLE JEOPARDY: How does the ornamental plant, Water hyacinth, affect the environment?
Water hyacinth: An appealing aquatic plant, introduced to be an ornamental. It spreads as dense matts cause dead zones due to lack of sunlight. They also cause clogs in piping and waterways.
What is a possible reason why Acadia National Park can't remove Japanese Knotweed?
Hint: They usually cut the stalks, but not the roots
Removal could cause damage to other native plants in the soil where many roots are structured.
DOUBLE JEOPARDY: Why do higher temperatures that follow every spring give an advantage to invasive species, that is not the previous example of sprouting early? Hint: Northern vs Southern Species.
Southern species are around the equator, which means the range of temperature they grow in is high. This also means southern species cannot grow in the northern, cold, range. However with increasing temperatures due to global warming, the southern species can now invade northern.
What is another reason why an ornamental plant like Cogongrass would affect the environment besides taking over the land.
(Not on the slides)
Hint: Cogongrass have stiff leaves, high silica content, and are densely compact.
Animals cannot eat the grass as a source of food
Animals may injury themselves eating the stiff plant
Smaller animals will have difficulty traveling
Name another benefit of managing invasive species.
(Not on the slides)
Protecting of agricultural productivity
Improve soil health
Ecosystem services
Water resources
Recreational value