Monday Sept. 16, 2013

Monday Sept. 16, 2013

• How is this a predator – prey relationship?

How does the predator-prey relationship affect a population?

A. The predators and prey are in competition with each other.B. Usually either the predator or the prey will become extinct.C. The predator species usually has exponential growth.D. The relationship controls the population size of both species

Tuesday September 17,2013

A population of rodents becomes stranded on a remote island. Eventually, the population reaches the island’s carrying capacity. At this point, the birth and death rates are

A. relatively equalB. crashingC. density dependent D. density independent

Clear your desk except for HW and notes…take out a piece of paper

and a pen or pencil

It’s time for a POP QUIZ

ECOLOGY POP QUIZ QUESTIONS

1. Describe what Ecological Succession is.2. List the two types of Succession and describe

the four main steps for each3. What is a Pioneer Species?4. Describe what Carrying Capacity means in

ecology.5. What is the difference between logistic and

exponential growth?

Wednesday September 18, 2013

http://usnews.nbcnews.com/_news/2013/09/12/20454733-nature-will-have-to-clean-up-hawaii-molasses-leak-that-killed-thousands-of-fish?lite

Lab/Activity: Going with the flow

• One handout per person• We will be going outside• Each student should have a cup• The number on the cup relates to the food

chain• Need two buckets per food chain– ONE WITH WATER TO THE TAPE LINE– ONE EMPTY

Going With the Flow…Fill out the following

• What is the Purpose??– Hint look at the procedure

• Background: draw food chain/energy pyramid use pg 408 and 417 in text book

• Hypothesis: (if… then statement)

Food Chain

Energy Pyramid

• You energy pyramid should look like this

Tomato plant

Insect

Frog

Hawk

Calculations

• 20,000 CALORIES FROM THE SUN• ½ goes to the plant = ?• 10% of the plant calories go to the insect=?• 10% of the insect calories go to the frog = ?• 10% of the frog calories go to the hawk= ?• 10% = .10• 20,000/2 = ?• _____ x .10 =?

Efficiency

• Amount of water started with = 6000ml• Amount lost = 6000ml – what is left• (Amount left/ 6000ml) x 100 = %

Mullet are local estuarine fish that move in schools and feed on plankton and plant matter. Natural predators of the mullet include spotted sea trout, sharks, pelicans and dolphins. The graph below shows how the number of mullet in an area has changed over time.

Based on the data, one student concludes that a new predator was introduced into the area during this time period. Which of the following is a likely alternate explanation for the change in the mullet population?A. mullet prey increased in the areaB. mullet parasites decreased in the areaC. the temperature of the area increasedD. the amount of aquatic plants in the area decreased

Thursday September 19, 2013

Friday September 20, 2013