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Chapter 50 Introduction to Ecology. Scientific study of the interactions between organisms and the environment Emphasis on the distribution and abundance of organisms. What kinds of factors might influence an environment?. Abiotic: non-living components Chemical/physical factors Temp Light

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Chapter 50 Introduction to Ecology


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    1. Chapter 50Introduction to Ecology • Scientific study of the interactions between organisms and the environment • Emphasis on the distribution and abundance of organisms

    2. What kinds of factors might influence an environment? • Abiotic: non-living components • Chemical/physical factors • Temp • Light • Water • Nutrients • Biotic: living components • Plants/animals • Bacteria/fungi/protists/viruses

    3. What environmental factors would limit the distribution or range of a gray wolf? http://akvis.com/img/examples/sketch/wolf-color-sketch/wolf-color-photo.jpg http://www.fws.gov/midwest/wolf/2007delisting/summary.htm

    4. What factors determine the abundance of gray wolves? http://www.wolf.wild.art.pl/obraz/big/public/wolf_pack.jpg

    5. Areas of Ecology we will explore • Organismal ecology • How the structure, physiology, and behavior are influenced by environment http://www.advenphoto.com/images/tour_page_images/Cardinals.jpg http://bilbo.bio.purdue.edu/www-ecology/faculty/howard/images/toad.jpg

    6. Areas of Ecology we will explore • Population ecology • Factors that influence how many individuals in a species live in an area http://www.timberwolfinformation.org/info/wolves/wolfden.jpg

    7. Areas of Ecology we will explore • Community ecology • Interactions between species • Predation, competition, disease and environmental disturbances http://www.satyamag.com/sat.site.images/clear-cut.jpg http://content.answers.com/main/content/wp/en-commons/thumb/c/c0/300px-Hawk_eating_prey.jpg

    8. Areas of Ecology we will explore • Ecosystem ecology • Energy flow and nutrient cycling http://www.bigelow.org/edhab/images/food_web.jpg http://www.windows.ucar.edu/earth/climate/images/nitrogencycle.jpg

    9. Areas of Ecology we will explore • Landscape ecology • How ecosystems are arrayed in a region • Patchiness, energy exchanges http://www.raize.ch/Reisen/velo-eurasien/satellite-images/05-sumxi-rutokxian.jpg http://www.fs.fed.us/pnw/mtsthelens/photo-gallery/photos/images/cc-Willow-Spring-Oasis.jpg

    10. Areas of Ecology we will explore • Biosphere • Sum effect of all ecosystems on the area inhabited by life • CO2 concentration, climate change, erosion http://people.hofstra.edu/geotrans/eng/ch8en/conc8en/img/biosphere.gif

    11. Areas of Ecology we will explore • Environmental issues http://www.ethicurean.com/wp-content/uploads/2006/10/global_warming_predictions_map_2.jpg

    12. Why do organisms disperse? What determines how far they disperse?

    13. What geographic distribution-limiting factors might keep gray wolves from dispersing from their current range? http://www.timberwolfinformation.org/info/wolves/wolfden.jpg

    14. Geographic distribution-limiting factors • Geographic barriers • oceans, mountains, roads • Time • natural, intentional, or accidental transplants • Habitat selection • Breeding requirements, food availability

    15. Habitat Selection http://z.about.com/d/goasia/1/0/U/w/1/bali-ricepaddies-IstvanKoospal.jpg http://www.gasdetection.com/news2/anopheles_mosquito_4_hnd.jpg

    16. Geographic distribution-limiting factors • Geographic barriers • oceans, mountains, roads • Time • natural, intentional, or accidental transplants • Habitat selection • Breeding requirements, food availability • Biotic factors • Predation, disease, absence of required symbiotic partner

    17. Geographic distribution-limiting factors • Abiotic factors • Temp, water, light requirements influence dispersal

    18. http://ralphm.net/map_image?mapname=world

    19. Geographic distribution-limiting factors • Climate=prevailing weather conditions • What factors influence macroclimates? • Large bodies of water • Mountains • Tilt of earth=seasons

    20. What effect does Lake Superior have on the North Shore climate? http://www.cas.vanderbilt.edu/bioimages/biohires/ecoregions/h50416superior-north-shoreh5011.jpg

    21. Geographic distribution-limiting factors • What is a microclimate? • What causes microclimates? http://www.nrel.colostate.edu/projects/brd_global_change/images/15transect.gif