Introduction to Ecology

10/12/2012

Goals for the day

1. Understand, and be able to describe the difference between r-strategists and K-strategists.

2. Be able to draw the exponential & logistic growth curves labeling the X & Y axes (and carrying capacity where necessary)

• Be able to say how ozone depletion is involved in skin cancer.

Question of the day

Draw & Label an Exponential Growth Curve & a Logistic Growth Curve. What is the main thing that separates them?

Question of the day

Draw & Label an Exponential Growth Curve & a Logistic Growth Curve. What is the main thing that separates them?

Ozone Layer- absorbs harmful UV radiation from the sun.

What have you heard about the ozone layer?

Ozone Layer- absorbs harmful UV radiation from the sun.

Depletion ( ) - first noticed in the late 1970s, ozone depletion has been caused by a build up of Chloroflorocarbons (CFCs) in the upper atmosphere (Stratosphere).

Ozone Layer Depletion

• In 1987 the MONTREAL PROTOCOL, a UN Treaty was signed by 24 countries. This protocol banned the use of CFCs to prevent further damage to the ozone layer.

CFCs have are a long lived gas in the atmosphere, but due to the Montreal Protocol, which 197 countries have now signed,

CFCs are starting to dissipate ( ) and the Ozone layer is starting to heal

Depletion (Decrease ) of ozone in the atmosphere has been implicated (linked/accused ) in the cause of skin

cancer. WHY?

Due to increased amounts of UV radiation from the sun.

Field Guide Page

• You will CREATE 2 organisms

• One will be a K strategist, AND one will be an r strategist

• Each organism will have its own field guide page with the following attributes