Launch <ul><li>What is predation? </li></ul><ul><li>What is an example of a predator and prey that we haven't studied in c...
Population Ecology
1. Birth Rate <ul><li>Birth Rate  (natality rate)= number of babies being born per unit time </li></ul><ul><li>Examples: 2...
<ul><li>Death Rate  (mortality)=  Number of individuals that die per unit time </li></ul><ul><li>Examples: 73 deaths / hou...
3.  Immigration  and  Emigration <ul><li>Immigration  = the number of individuals that move INTO a population </li></ul><u...
How Many Individuals Are IN a Population <ul><li>( Births  +  Immigrants )  -  ( Deaths  +  Emigrants )  </li></ul>Lead to...
Population Change <ul><li>Original Population + BIDE = New Population Size  </li></ul>Lead to Population Growth Lead to Po...
<ul><li>1.Besides burning of fossil fuels, what is one of the two other ways carbon is returned to the atmosphere? </li></...
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Population Ecology

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Population Ecology

  1. 1. Launch <ul><li>What is predation? </li></ul><ul><li>What is an example of a predator and prey that we haven't studied in class? </li></ul><ul><li>Why are food webs more complex than food chains? </li></ul><ul><li>In a food chain, decreasing what level of consumer will have the least effect on the ecosystem, primary or secondary? </li></ul><ul><li>Review the nitrogen cycle. </li></ul>
  2. 2. Population Ecology
  3. 3. 1. Birth Rate <ul><li>Birth Rate (natality rate)= number of babies being born per unit time </li></ul><ul><li>Examples: 23 births / year (twenty three births per year) </li></ul><ul><ul><ul><li>10 births / minute (ten births per minute) </li></ul></ul></ul>
  4. 4. <ul><li>Death Rate (mortality)= Number of individuals that die per unit time </li></ul><ul><li>Examples: 73 deaths / hour (seventy three deaths per hour) </li></ul><ul><ul><ul><li>5 deaths / second (five deaths per second) </li></ul></ul></ul>2. Death Rate
  5. 5. 3. Immigration and Emigration <ul><li>Immigration = the number of individuals that move INTO a population </li></ul><ul><li>Emigration = the number of individuals that move FROM a population </li></ul>I mmigration = I nto a population E migration = E xiting a population
  6. 6. How Many Individuals Are IN a Population <ul><li>( Births + Immigrants ) - ( Deaths + Emigrants ) </li></ul>Lead to Population Growth Lead to Population Decline
  7. 7. Population Change <ul><li>Original Population + BIDE = New Population Size </li></ul>Lead to Population Growth Lead to Population Decline
  8. 8. <ul><li>1.Besides burning of fossil fuels, what is one of the two other ways carbon is returned to the atmosphere? </li></ul><ul><li>2.Using N2 and NH4+, describe the process of nitrogen fixation. </li></ul><ul><li>3. Using N2 and NH4+, describe the process of denitrification. </li></ul><ul><li>4.Bacteria and plant roots form a mutalistic relationship. Describe why this relationship is mutualistic. </li></ul>

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