12 ecosystems

Announcements March 7, 2011 ,[object Object],[object Object],[object Object],[object Object],[object Object]

Types of Ecosystems I & II Lecture Objectives: ,[object Object],[object Object]

Recurring Themes… ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Community Properties ,[object Object],[object Object],[object Object],[object Object]

Succession ,[object Object],[object Object]

Two types of succession ,[object Object],bssv01.lancs.ac.uk/bs/research/ soilecol/linkgrd.htm Succession following melting of the Muir Glacier

Primary succession ,[object Object],[object Object],[object Object],[object Object]

Primary succession ,[object Object],[object Object]

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[object Object],Primary takes longer than secondary http://content.lib.washington.edu/mtsthelens/ © Roger del Moral Mount St. Helens 1980 1996 Two types of succession

Secondary succession ,[object Object],[object Object],[object Object],[object Object]

Biomes - climax communities with wide geographical distributions ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

% IB 105 students who have visited: Tropical Forest: 26% Prairie or other grassland: 69% Desert: 39%

Tundra ,[object Object],[object Object]

Tundra ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Desert ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Common myths about deserts: ,[object Object],Joshua Tree National Park, CA Gobi Desert, Asia Mohawk Dunes, AZ

Common myths about deserts: ,[object Object],[object Object]

Common misperceptions about deserts: ,[object Object]

results from over grazing, intense agricultural use, erosion, water runoff, and over heating of soil. Desertification : change from fertile land to desert.

Boreal Forest ,[object Object],[object Object]

Boreal Forest ,[object Object],[object Object],[object Object],[object Object],[object Object]

Temperate Deciduous Forest ,[object Object]

Temperate Deciduous Forest ,[object Object],[object Object],[object Object],[object Object],[object Object]

Grasslands ,[object Object],[object Object]

Grasslands ,[object Object],[object Object],[object Object],[object Object],[object Object]

Grasslands ,[object Object],[object Object],[object Object],[object Object]

Savanna ,[object Object],[object Object],[object Object],[object Object],[object Object]

Savanna ,[object Object],[object Object],[object Object],[object Object]

Mediterranean Shrublands ,[object Object],[object Object],[object Object],[object Object]

Mediterranean Shrublands ,[object Object],[object Object]

Tropical Dry Forest ,[object Object],[object Object],[object Object],[object Object]

Tropical Rainforest ,[object Object]

Tropical Rainforest ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

12 ecosystems

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