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Slide 2 Wednesday, October 29 th, 2014 Daily Objective: By the end of today, I should be able to: List the characteristics used to describe a population You will have the first 20 minutes of class to read pages 130-133 and answer questions 1a,2a and 2b, in complete sentences in your notebook Slide 3 Researchers study populations by: geographic range density and distribution growth rate, and age structure. DESCRIBING POPULATIONS Slide 4 Geographic Range The area inhabited by a population A populations range can vary enormously in size, depending on the species. Slide 5 Density and Distribution Population density refers to the number of individuals per unit area. Populations of different species often have very different densities, even in the same environment. Slide 6 A population of ducks in a pond may have a low density, while fish and other animals in the same pond community may have higher densities. Slide 7 Distribution refers to how individuals in a population are spaced out across the range of the population randomly uniformly in clumps Slide 8 Growth Rate A populations growth rate determines whether the population size increases, decreases, or stays the same. Slide 9 Population Growth A population will increase or decrease in size depending on how many individuals are added to it or removed from it. The factors that can affect population size are the birthrate, death rate, and the rate at which individuals enter or leave the population. Slide 10 Age Structure the number of males and females of each age a population contains. Slide 11 Thursday, October 30 th, 201 Daily Objective: By the end of today, I should be able to Describe the major differences between Exponential and Logistic Growth Describe factors that affect carrying capacity Entrance task: Review your notes from yesterday in terms of what we use to describe a population How would you describe our classroom population? Slide 12 With your partner in your notebook Describe the population in the first picture. Be as specific as possible Describe all features including numbers, habitat, and any other pertinent details When you finish the first, describe the second Slide 13 Page 135 Slide 14 GenerationMale Rabbits Female Rabbits PairsTotal 13336 299918 32754 4 5 Slide 15 Slide 16 Friday, October 31 st 2014 Daily Objective: By the end of today, I should be able to Describe factors that affect carrying capacity Describe density dependent and independent limiting factors on populations Entrance task: After you write out your objectives, please use pages 133 and 134 to figure out if your rabbit population from yesterday is showing exponential or logistic growth and explain how you know You have 2 minutes until we will discuss Slide 17 Exponential growth Under ideal conditions with unlimited resources, a population will grow exponentially. J curve Slide 18 Slide 19 Logistic Growth occurs when a populations growth slows and then stops, following a period of exponential growth. Slide 20 Carrying Capacity Carrying capacity is the maximum number of individuals of a particular species that a particular environment can support. Once a population reaches the carrying capacity of its environment, a variety of factors act to stabilize it at that size. Slide 21 Limiting Factors Control the growth of the population Slide 22 Density Dependent Limiting Factors Factors that affect tightly packed populations Competition Predation Herbivory parasitism Disease Stress from overcrowding Slide 23 Density Independent Limiting Factors Affect all populations in similar ways, regardless of population size NATURAL DISASTERS!! Slide 24 How can the carrying capacity fluctuate? Slide 25 Tuesday, November 4 th, 2014 do not take the tape off of your desk VOCAB QUIZ TOMORROW!! Daily Objective: By the end of today, I should be able to Describe how predator and prey relationships change populations Entrance task: Please grab a hare and lynx sheet from the first counter and read through the activity we will be doing today. Slide 26 Slide 27 Slide 28 Slide 29 Wednesday, November 5 th, 2014 Daily Objective: By the end of today, I should be able to Determine factors that affect human population growth. Entrance task:YOU DO NOT NEED TO WRITE THIS TODAY Please have out your lynx and hare homework. Spend a few minutes answering the discussion questions with your group. Pay special attention to number 4 and discuss how the lynx and hare relationship relates to population growth and size Slide 30 Page 139 Describe the trends Slide 31 Thursday, November 6 th, 2014 Daily Objective: By the end of today, I should be able to Describe how invasive species affect native species. Entrance task: Open your book to page 136 and read the article. After reading, answer the following questions in your notebook: Why is the population growth of mussels within the great lakes different from the population growth in its native ecosystem? Slide 32 Invasive Species Nonnative species that come into an area What is the problem? Slide 33 In your notebook What did Malthus have to say? What does phosphorus fertilizer have to do with populations? What is one surprising thing that you learned about in this article? Slide 34 DEMOGRAPHY THE SCIENTIFIC STUDY OF HUMAN POPULATIONS BIRTHRATES DEATHRATES AGE STRUCTURE Slide 35 Thursday, November 6 th, 2014 Daily Objective: same as yesterday you do not need to rewrite it. Entrance task: Grab a human population paper off of the first desk. Glue it in your notebook and complete it quickly please. Slide 36 Population growth Homework Final review Slide 37 Chapter 5 Mini Quiz Page 151, 1-10 On a half sheet of paper to turn in Slide 38 1.A 2.C 3.A 4.D 5.B 6.C 7.B 8.B 9.C 10.LETS TALK ABOUT IT!! Slide 39 Monday, November 10 th, 2014 Daily Objective: By the end of today, I should be able to Describe renewable and non renewable resources Entrance task: Grab a renewable and non renewable worksheet off of the first counter and begin working on it please you should only be answering the first question Slide 40 CHAPTER 6 Big Idea: Interdependence in Nature How have humans shaped local and global ecology? How do we affect the environment? How can we use our natural resources wisely? Why should we protect biodiversity? How can we change our behaviors to help protect our planet? Slide 41 Renewable Resources They can be replaced by a healthy ecosystem Slide 42 Nonrenewable resources Cannot be replenished naturally: like fossil fuels Slide 43 BIOSPHERE Idea for how to help remedy our human effects Slide 44 Sustainable Development Using resources in a way that preserves ecosystems that produce natural resources Slide 45 Clear cutting is the process of removing the majority of trees from a forest for human use. What might a sustainable alternative to clear cutting look like? Slide 46 Wednesday, November 12 th, 2014 Daily Objective: By the end of today, I should be able to YOU DO NOT NEED TO REWRITE THIS TODAY Describe renewable and non renewable resources Entrance task: What is an example of a non-renewable resource? Explain why. Slide 47 Expert groups Hydropower 1 Wind 2 Solar 3 Geothermal 4 Biomass 5 Slide 48 Thursday, November 13 th, 2014 Daily Objective: By the end of today, I should be able to Define Biodiversity and explain its importance Entrance task: In your own words, without looking at your book or talking to your neighbors, write what you think biodiversity means. (hint: BIO and Diversity) Slide 49 Biodiversity The total of all the genetically based variation in all organisms in the biosphere Slide 50 Ecosystem diversity Variety of habitats, communities and ecological processes Slide 51 Species diversity The number of different species in the biosphere Slide 52 Genetic diversity All the different forms of genetic information carried by a particular species Important for survival in a changing environment Slide 53 Why is it important? Slide 54 Humans reduce diversity by Changing habitats Ex: Hunting Ex: Introducing invasive species Releasing pollution into food webs Contributing to climate change Slide 55 You do not need to write this out today Please open your book to page 164 and read through the section about acid rain. What do we do to increase acid rain Slide 56 Please take out your lab and with your table partners discuss the following What are you going to be measuring? (Your dependent variable) How will you know it is germinated? Slide 57 Tuesday, November 18 th, 2014 Daily Objective: By the end of today, I should be able to Identify strengths and weaknesses within my understanding of chapter 5 and 6 content Entrance task: Please have out your notebooks and bookmark the page where your chapter 5 notes start and your chapter 6 notes end. YOU MUST HAVE YOUR TEXTBOOK TODAY!!!! Slide 58 By the end of today, I should be able too