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Exotic Invaders

Glossary of Terms for Exotic Invaders Mini-theme

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Algae:
Water plants - an important food for small water animals
Amphibian:
Animals that spend part of their life-cycle on land and part in water


Ballast water:
The water from the hold of big ships, used to keep the ship from tilting in big waves and wind.
Bio-diversity:
The number of different kinds of plants and animals in an ecosystem. A larger number of species means a healthier ecosystem.


Ceolenterate:
a member of the jelly-fish family
Competition:
Species who want the same light or nutrition from the soil are said to be in competition. Exotic Invaders compete with native plants for light, water and nutrients.
Crustacean:
An animal whose body is protected by an outer shell, for example a crab or a lobster (think "crusty")


Dicot:
Short for "Dicotyledon" , this means a plant with complex veined leaves
Dormant:
Some plant seeds can have an inactive period which can even last years until the conditions are right for them to grow.


Food webs:
If we study what plants and tiny animals eat, then who eats them, and who eats them, we can make a picture of what we learned called a food web.


Herbicide:
A chemical plant killer. Sometimes scientists have to use herbicides to kill off invading species that are harming other plants.
Harvesting:
Bringing in the crops is called harvesting but so is pulling out exotic invaders like purple loosestrife to get rid of them.


Indigenous:
It comes from the area it is in.
Invasive:
Means barging in to some place where you are not wanted. The exotic invaders are invasive.


Mollusk:
A mollusk is an animal that carries it's house like a snail.
Monocot:
Short for "Monocotyledon" which means plants with simple leaves like grass


Native:
Native means the same as "Indigenous" - coming from the place where they live. Exotic invaders are species that are not indigenous or native to an area.
Non-Indigenous:
This word means species that do not come from the place where they are living.


Perennial:
A perennial plant comes up again the next year without re-planting. A perennial problem just keeps happening over and over again.
Predators:
These are other animals or plants that eat others, and yes, there are plants that are predatory to flies and other insects.
 

part of Environment Canada's Green LaneTM