Bio171-F08-Lec%203

Bio171-F08-Lec%203 - Lecture 3: Biodiversity &...

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Unformatted text preview: Lecture 3: Biodiversity & Ecology Biology 171 Monday September 8, 2008 Saliency of Ecology and Evolution (why it matters) Overview of Biodiversity Linnean Perspective Ecological Perspective Phylogenetic perspective Overview of Ecology Organismal, Population Community, Ecosystem Todays Topics: Announcements This Week in Discussion: Synthetic Life Science Learning Center Text Reading Lecture 3 : 2 nd ed: Chapters 1 (5-10), 28 (614), 50 (1144-1146) 3 rd ed: Chapters 1 (6-10), 29 (594), 50 (1125-1127) Lecture 4 : 2 nd ed: Chapters 41 (941-947), 44 (999-1015) 3 rd ed: Chapters 41 (921-926), 44 (978-997) Overrides/Waitlists Go to any/all discussion sections next week that you can attend during the semester (or wish to switch to). Sign the list in the room, and you will know within the first 30 minutes whether you will be able to enroll in that section. If so, we can initiate the override process. When applicable, we will follow the waitlist order. Questions about overrides should be addressed to the Course Coordinator. Discussions start this week. Any student missing from their first discussion may be dropped from the course to make room for those waitlisted Science Learning Center (SLC) Peer-Led Study Groups for Biology 171 Study Groups are composed of up to 13 motivated students studying together Two hour weekly meetings with practice exams and worksheets Review material, solve problems, discuss concepts, ask questions, and prepare for exams Led by trained facilitator who has taken the class successfully, & who will guide and encourage group discussions Join an SLC Study Group 19 Biology 171 study groups this term Register online beginning Wed. Sept. 10 th at 2:00 PM at: www.lsa.umich.edu/slc Study groups begin Sunday, Sept. 14 th Email questions to: slcstudygroups@umich.edu Rapid & Progressive Shrinking of the Arctic Summer Ice Cap is a dramatic indicator of accelerating Global Warming trends Saliency of Ecology and Evolution Why should we care about ecology? The reason the Poles are a litmus of climate change is simple: when ice melts, the surface of the water or the land that lies beneath is darker and accumulates even more heat from the Sun, an example of "positive feedback" that alters local climate and accelerates global warming. http://www.nasa.gov/mpg/134743main_albiedo.mpg Albedo the fraction of radiation striking a surface that is reflected by that surface Fresh Snow: 70-80% Old Snow: 40-60% Ice: 30-40% Water: 6-8% The reason the Poles are a litmus of climate change is simple: when ice melts, the surface of the water or the land that lies beneath is darker and accumulates even...
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This note was uploaded on 01/30/2012 for the course BIO 171 taught by Professor Josephinekurdziel during the Fall '08 term at University of Michigan.

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Bio171-F08-Lec%203 - Lecture 3: Biodiversity &...

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