Lec 4

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Biological Sciences
Peter A.Bowler

Lecture 4 Saturday Feb 2, noon-1 Sunday feb 3, noon-1 Monday, feb 4 noon-1 Tuesday, noon-1pm 1 on chaparral huell howser 5 MTE’s: relatively small in comparison to other ecosystems As you approach the equator, there are deserts 30 degrees is drier than 40 degrees • forests in the north, chaparral, coastal sage scrub, to desert shrub in the south • Europe used to be oakwoodland: more Mediterranean now than it used to be • Slope effect: exposures facing north are much wetter than exposures factin gsouth o summer in here is winter o know ‘our’summer hemisphere—which hemisphere we’re in • Coastal upwellings that promote o East= deserts • know what characterizes maritime vs. the continental climates? o Maritime = a coastal climate; winters are moderate b/c of the ocean’s effect on temperature; summers are moderate; humidity is high; coastal fog • have gone from a summer rain pattern to the present summer drought that has happened in the last 3 million years • Floristic kingdoms: pools of plants o Australia and the Cape o Chile: primarily Neotropic with a littleAntarctic o Med. Basin and CA:Arctic • Species Richness o MTE area: Med Basin has the most species, followed by SWAustralia, CA, Chile, and SouthAfrica o Cape: known for its density • Chap
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