1. 1.3 Populations http://www.whale-images.com/endangered-mammals-80-pictures.htm

2. Figure 1.15 page 18

3. Carrying Capacity It’s the largest population of a species that an environment can support. Seychelles Paradise Flycatcher requiring about one hectare of mixed woodland per breeding pair. Lives on small island north-east of Madagascar. http://www.rareconservation.org/blog/index.php?paged=2

4. 4 factors determine the carrying capacity 1) MATERIALS AND ENERGY Limited by amount of energy from the Sun Supply of water, carbon and other materials http://www.condorjourneys- adventures.com/costarica_nature.asp http://weathersavvy.com/Q-Climate_DesertsHot.html

5. 4 factors determine the carrying capacity 2) Food Chains Limited by amount food supply (so trophic level below) Limited by predators (so trophic level above) http://www.intarttiles.com/robertekennedy.htm

6. 4 factors determine the carrying capacity 3) Competition Competition for food, water, mate and space. Intraspecific competition: among members of the same species Interspecific competition: between species. http://www.maxi-fond-ecran.com/fond-ecran-photo-paon/paon/telecharger-fond- ecran-photo-paon-p18507.html http://www.tnstate.edu/ganter/B412%20Lab2%20PlantComp.html http://www.allposters.com/-st/Elephant-Posters_c646_p3_.htm

7. 4 factors determine the carrying capacity 4) Population density : how many individuals that can live in an area at one time. http://reliableanswers.com/images/wallpaper/penguin_party.jpg http://www.naturetrek.co.uk/wildlife-holidays/wildlife-holidays.asp?ID=3

8. Density-dependent factors When density increases beyond suitable level: Overcrowding may : –increase stress and spread of diseases or parasites –Increase aggression and neglect of offspring Therefore decreases population http://www.envirowarrior.com/animal-abusers-the-worst-polluters/

9. Density-independent factors Limit a population regardless of its size. -Forest fire -Earthquake -Volcanic eruption -Tornado http://tiee.ecoed.net/vol/v3/issues/frontier_sets/yellowstone/sci_teaching.html

10. Check your understanding Do bacteria population assignment Do p. 24 # 1 to 6