Ecology Unit

What is ecology?

Ecology definition

Ecology Terminology to know.
You must click the link above and define each word. You may also want to find examples where they apply.
Please do this on a WordPress post or on your Biology 20 page.
These must be visible online. (It is due Wednesday for an open book in class assignment.)
Make sure to note where you are finding your definitions to source them or rewrite in your own words, which is suggested.

Symbiosis: A relationship in which two different organisms live in a close association.

Thee types of Symbiosis
Parasitism: one organism benefits and the other organism if harmed.
-a parasite obtains nourishment from the host
-a parasite does not usually kill the host because the host is a source of food
Ex. Dwarf mistletoe infects lodge polepine and jackpine
Ex. Lamprey attaches to fish

Mosquito: Females ingest blood for the protein. Male mosquitos ingest plant juices.

Commensalism: one of the partners appears to benefit while the other shows neither positive nor negative effects.
Ex. Artic fox following migrating caribou. Caribou kick up snow and uncover lichens which the fox eat.
Ex. The remore which attaches itself to a shark. The remora saves energy and picks up extra food shark doesn’t eat.
The shark is not harmed.

Remora fish and a shark

Mutualism:2 organisms live together and both benefit from the relationship.
Ex. Bees receive food from flowers and help flowers spread their pollen.


Ecological Sequencing

Ecosystem: A community and its physical and chemical environment.

WATCH: Ecosystems from Brain Pop
Close your computers.
You will have a written mini exam while watching this. Yes this will count for marks.

The largest ecosystem that there is, is the biosphere.
There are 3 zones of the biosphere where life is found. They are called:
-the lithosphere (land)
-the hydrosphere (water)
-the atmosphere (air)

Living things that are found in any ecosystem are called Biotoic Factors.

All non-living things in an environment that an organism needs to survive are called Abiotic Factors.
(Ex. sunlight, temperature, weather.)

The 2nd largest type of ecosystem that there is, is called a Biome.
-There are many biomes in the world.
-All biomes have characteristic plants (vegetation), animals, soil, climate.

Biomes in Canada (From: Project Wild)

WATCH: Land Biomes from Brain Pop
Close your computers.
You will have a written mini exam while watching this. Yes this will count for marks.

A population is a group of living organisms of the same species occupying a given area (ecosystem) at a certain time.
A community is made up of many populations added together. This includes the population of all living organisms that occupy an area (ecosystem).

Populations Notes
Changes in Population

Population counts: (I mean, it really does count!)
-Information about competition among members of the same species for food, territory, and reproduction requires a study of populations.
-Since changes in population are closely linked with predators, parasites and food sources, population studies also provide information about relationships among different organisms.
-The study of a community involves only the organisms, whereas the study of an ecosystem includes both the biotic (living) and the aboiotic components of an area.
-By comparing the populations data from a wide variety of organisms, ecologists are able to make many conclusions about a variety of topics:
1. Principles that govern the growth and stability of populations over time.
2. Analysis of the data allows predictions of what might happen to a species if the environment is altered or a new species is introduced.
3. Describes how a population interacts with another.

Climatographs are also known as climatograms. All the biomes on the earth have their own climate and long-term weather patterns. You can represent the climate of a biome by developing a climatograph. Climatographs chart the precipitation in centimeters and the temperature in degrees Celsius.

The climate (amount of precipitation and temperature) determines the type of vegetation in a biome. The type of plants (vegetation) then determining the type of animals in a biome. It is the climate therefore that determines the type of biome that is found in a particular area.


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