Presentation on theme: "Torrey Pines High School Canyon Field Study"— Presentation transcript:
1Torrey Pines High School Canyon Field Study An Inquiry Lesson in the Ecology of theCoastal Sage&ChaparralCommunitiesOf San Diego County
2PURPOSE of STUDY:San Diego County has a unique range of ecological communities that begin at the coast line and progress westward across the coastal plain, into foothills, mountains, and a desert region.The rain shadow effect created by this geographical transect provides a unique set of micro climates that define these communities.
6Purpose cont.East and West Facing canyons along the coastal belt show similar plant transitions and microclimatesStudents analyze these slopes and then compare and contrast their findings to the larger geographic distributions
7Class Objectives: To collect data to demonstrate plant distribution by microclimate usingTemperature,Soil Conditions,Moisture &Animal or human interference)To document seasonal changes from Fall toSpring
8ProcedureStudents collect field data on biotic and abiotic factors of the canyon.And then match the microclimate features to the key index plants
9Key Terms Coastal Sage and Chaparral- a scrub land biome of dense shrubsfound along the coastcharacterized by mild, rainy wintersand long, hot, dry summers
10Key TermsHumus-The product of decaying matter from plants, animals, and decomposersIndex Plant-A main plant found in abundance in a particular community
11Key TermsTransect Line-A line of vegetation selected for charting plants.Microclimate-A climate of an area with important factors such as precipitation and temperature.
43Plant Adaptations of the Riparian Laurel Sumac-long, broad leaves are NOT well adaptedcurled leaveshelp gather water &reduce the amount of surface area exposed to the hot sunthick woody stemto prevent water loss
45The Succession Study Area IV Succession AreaSouth slope adjacent to the football fieldCleared & filled for the stadiumGrasses, small shrubs, and opportunistic species first colonize these areas.This secondary succession area once hadliving organism but was destroyed & is nowrecovering.
46Plants in the Succession area . . . California SageStrong aromaVery narrow, long leavesLight gray colorationReflects hot intense sun lightGreen stemIncreases photosynthesis area
50Plant Adaptations of the East Facing Slope Scrub Oak-relatively large tree-like structuredark, cupped oval leavesfor gathering waterwith prickles for protectionThis plant is an index plant of the foothillscommunity at higher, cooler, elevations.