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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.

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monday sept 16 2013
Monday Sept. 16, 2013
  • How is this a predator – prey relationship?
slide2

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

slide4

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

slide5
Clear your desk except for HW and notes…take out a piece of paper and a pen or pencilIt’s time for a POP QUIZ
ecology pop quiz questions
ECOLOGY POP QUIZ QUESTIONS
  • Describe what Ecological Succession is.
  • List the two types of Succession and describe the four main steps for each
  • What is a Pioneer Species?
  • Describe what Carrying Capacity means in ecology.
  • What is the difference between logistic and exponential growth?
wednesday september 18 2013
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
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
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)
energy pyramid
Energy Pyramid
  • You energy pyramid should look like this

Hawk

Frog

Insect

Tomato plant

calculations
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
Efficiency
  • Amount of water started with = 6000ml
  • Amount lost = 6000ml – what is left
  • (Amount left/ 6000ml) x 100 = %
slide14

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 area

B. mullet parasites decreased in the area

C. the temperature of the area increased

D. the amount of aquatic plants in the area decreased