Biology Biodiversity Guided Notes - NOTES Biodiversig I big...

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Unformatted text preview: NOTES: Biodiversig I. big 31f§$|¥§ a : the variety of organisms in a given area a. Two Types of Resources: i. flag. pig hi 3 3' {gas ‘2'; {g — is replaceable or regenerated over time. EX: Water, wood, soil. ii. npflgcfleg g‘ b i E 15;: Egg-x g i cannot be replenished by natural processes. EX: Fossil fuels, energy 1. Ecosystem Diversig = the van'ety of habitats, communities, and ecological processes in an ecosystem I i 2. Species Diversity = # of different species in a given area i 3. Genetic Diversity: amount of genetic variation in a population or among all living organisms II. Importance of Biodiversig ,a...‘ a. Sam 5 5 a — Aesthetically pleasing b. flfih [fl 7 different organisms interact with different species; taking a species AWAY = BROAD RANGE of EFFECTS c. Lots of organisms : lots of fipofl 1 ,3: b .3 . These food webs make our survival possible. (:1. Biodiversity provides crucial " flfcfé a eggm SE53)! Eggs "— Ex. clean water, breathable atmosphere, and natural limate control, upon which all species depend. III. Importance of Biodiversity to People 31-. Mane—,Lloizmgiam 3km”. a: are all derived from the abundant organic resources of the Earth. i. Beef, chicken, pork, fish, shellfish ii. "PCQXQ 3311) came from mold iii. Quinine 1 mg, 3;; tie; treatment) came from bark of cinchona tree iv. Cotton from plant, wool from sheep, silk from worms V. Wood from trees IV. Amoal MM a. Humans have altered the Earth’s landscapes in 4 main ways: e: 1. Hunting and Gathering 2. Agriculture 3. Industry 4. Urban Development b. Hunting & Gathering i. Primary means of survival ii. Changed landscape by: 1. Building dams 2. Burning grasslands (for nth ) 3. Exgessive hunting of certain species to extinction (creates 1 pg: 3“ 29mg“) ML: of $6; § , etc.) c. Agriculture i. Humans learned to grow plants for a constant supply of £994 and nflm' j ; \ng (population growth rate inc). ii. The Green Revolution of 1950’s led to nutrient - depleted Son and many Eanc Q who-cg (single crop) fields. d-Lustrr i. To produce many of our modern conveniences ( (:1ng E 5 , Qgfixcfltgs , xix '3 , etc), fossil fuels are extracted and burned for energy. Wastes from these processes are released into the air, water, ,and soil unchecked e. Urban Development 1. More industry 2 More ($236.13 ii. More people = More jag; ‘XS iii. As the human population grows, there is more and more SLECSS on plant and 9-? other animal populations due to fig 9:; (C resources and 165$ space. ...
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