Hawaii_Ecology_April 29

Hawaii_Ecology_April 29 - Today Natural History of the...

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1 Natural History of the Hawaiian Islands Today Last 3 lectures Introduction to Microbiology (Dr. Alam) Zoo/Bot 450 Natural History of the Hawaiian Islands Bot 456 Plant-Animal Interactions [If one were to stand on the top of Mauna Loa] “he could see ___________ at a single glance of the eye” Mark Twain, 1866 4000 m A. Alaska, Canada and Russia B. All of the Hawaiian Islands C. All the climes of the world The Hawaiian Island chain lies on the Pacific Plate, which moves north-west over time The Pacific Plate moves over a fixed hotspot Volcanic islands build and erode over time Walker 1990 Kauai Midway Hawaiian Emperor Chain Loihi
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2 Island age (millions of years) Kauai Midway Distance from Kilauea (km) Potassium-Argon dating indicates that the main Hawaiian Islands are relatively young Clague and Dalrymple 1989 continental species (millions) arrivals survive Colonization is a sequential and selective process reproduce dispersal habitat compatibility find mates, habitat compatibility become established Primary succession involves colonization of new substrates lava lichens, ferns Metrosideros tree Secondary succession occurs when established vegetation is disturbed. Compared to primary succession, secondary succession tends to be ___________ because ____________ A. slower, it occurs in warmer environments B. Faster, some seeds are already present C. Slower, soil inhibits growth D. Faster, it occurs in wetter environments marine/migratory birds 100+ land birds ~ 15 land mammals ~1 land mollusks ~ 20
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This note was uploaded on 08/30/2010 for the course BIO 320 taught by Professor Wu during the Spring '10 term at USC.

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Hawaii_Ecology_April 29 - Today Natural History of the...

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