Ecosystem Interactions
Terrestrial & Aquatic Ecosystems
Factors Affecting Ecosystems
Limits on Populations & Communities
Changes in Ecosystems
100
is the transition area between ecosystems.
What is an ectone?
100
There are 3 terrestrial biomes in Alberta:
What is Taiga (Boreal), Grasslands & Temperate deciduous forest
100
the upper layer of soil, composed mainly of partially decomposed leaves or grass
What is litter?
100
the maximum number of individuals of a species that can be supported by an ecosystem
What is carrying capacity?
100
the harvesting of certain trees in an area
What is Selective Cutting
200
is a region that is characterized by the dominant plant and animal life and the prevailing climate conditions
What is a biome?
200
One tree that has needle-like leaves but is deciduous
What is larch/tamarack?
200
the layer beneath all soil, composed of rock
What is bedrock
200
destruction of habitat, flood, fire are examples of factors
What are density independent factors?
200
-deep, cold, clear water - low nutrient levels - few producers
What is an oligotrophic lake?
300
In our 'Species game' the new species that were allowed to run in round two are know as:
What is invasive or exotic species?
300
the thin layer of soil above the permafrost that is swampy and boggy
What is muskeg
300
The three main categories that affect terrestrial ecosystems
What is Soil, Available Water, Temperature, & Sunlight.
300
an organism can survive within a particular range of an abiotic factor.
What is law of tolerance?
300
In general, oligotrophic lakes gradually become eutrophic over time in a process called
What is eutrophication of a lake.
400
The introduction of a new species to an ecosystem by humans is one of the main causes of
What is species depletion or extinction?
400
The area from the shore of the lake or pond to the point where no more plants grow in the lake bottom.
What is the littoral zone?
400
In this season the lake is divided into 3 separate layers and the epilimnion circulates.
What is summer?
400
Ex. Elk mate only once per year, during the fall.
What is breeding frequency?
400
the amount of dissolved oxygen needed by decomposers to completely break down the organic matter in a water sample at 20 C over 5 days
What is Biological Oxygen Demand?
500
Many warbler species can all live in one tree because they all have specific .
What is niches?
500
There are few nutrients, low oxygen due to no photosynthesis and a high number of bacteria.
What is the profundal zone?
500
As the seasonal temperature drops the lake will begin turnover which circulates oxygen.
What is Fall Turnover.
500
Ex. The female sea turtle lays many eggs, but only a few of her offspring even reach the sea and fewer still reach maturity.
What is capacity for survival?
500
There are three main indicators of water quality:
What is Dissolved Oxygen, Bacteria Count, & Biological Oxygen Demand?
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