Healthy Ecosystems
the energy source on which everything in a healthy land or water ecosystem depends on
What is the sun? OR What is sunlight?
a plant that can change the sun’s radiant energy into chemical energy
What is a producer?
the ability to meet the needs of the present generation without compromising the ability of future generations to meet their needs.
What is sustainability?
the ability of a species to survive in a particular habitat, especially because of changes of form or behavior
What is an adaptation?
an alien species whose introduction does, or is likely to cause economic or environmental harm
What is an invasive species?
the kinds of living organisms in a healthy ecosystem (3)
What are producers, consumers, and decomposers?
organisms in an ecosystem that feed on other organisms to get their energy
What is a consumer? OR What are predators?
Sustainability development must take into consideration these 3 aspects.
What is social, economic and environmental impacts?
the deadly substance given off by roots of some exotic invaders
What is a toxin?
features that make up biodiversity (3)
What is ecosystem diversity, species diversity and genetic diversity?
the non-living things in a healthy ecosystem
What are abiotic factors?
the place that provides food, shelter, and a suitable climate for an organism to live
What is a habitat?
responsible use and protection of the natural environment through conservation and sustainable practices.
What is environmental stewardship?
this can happen when an organism has no natural predators
What is overpopulation?
a species that many other organisms depend on for their survival.
What is a keystone species?
the number of different species in a particular habitat
What is biodiversity?
all of the environmental factors and interspecies relationships that influence the species and a species role in the ecosystem
What is a niche
a substance that can be used repeatedly and does not run out because it is naturally replaced.
What is a renewable resource?
Strategies used in Canada to control invasive species. (4)
What is prevention of new invasions? What is early detection of new invaders? What is rapid response to new invaders What is management of established and spreading invaders (containment, eradication, and control)?
An exotic species that invaded the Great Lakes due to boat ballast water
What are zebra mussels?
the position of an organism in the energy flow of an ecosystem.
What is a trophic level?
a model that shows only one-to-one links between the levels of producers and consumers
What is a food chain?
a substance that is being used up more quickly than it can replace itself. Its supply is finite.
What is a non-renewable resource?
Second only to this, invasive exotic plants are the greatest threat to natural ecosystems of the United States.
What is ‘intentional habitat destruction’?
a new species enters an ecosystem it creates a disturbance because it will compete with other organisms already in the ecosystem
What is competition of niches?