Field assignment-Escotto

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  • Field assignment-Escotto

    1. 1. SOUTH LAKE TAHOEFIELD ASSIGNMENT Summer 2012 GEL 103 Erin Escotto 1
    2. 2. TABLE OF CONTENTSIntroduction of South Lake TahoeRocks: Granite & QuartzPlants: Snow Plant & Ponderosa PineAnimals: Raccoon & Black BearMans footprint left behindClosingResources 2
    3. 3. THE ROCKS, MINERALS, FOSSIL RECORDS NATURAL HISTORY AND WILDLIFE HABITATS ARE BUT AN OVERVIEW TO MILLIONS OF YEARS OF GEOLOGIC DATA THAT RELATES TO THE TAHOE BASIN AND THE FORMATION OF THE SIERRA NEVADA MOUNTAINS. LOCATED ON THE CALIFORNIA-NEVADA BORDER, LAKE TAHOE IS THE SECOND LARGEST ALPINE LAKE IN THE WORLD. AT AN ELEVATION OF 6,229 FEET THE WATER IS CLEAR AND BLUE AND HOST TO A HUGE VARIETY OF PLANT AND ANIMAL LIFE. AS MASSIVE TECTONIC COLLISIONS OCCURRED THE LANDMASS KNOWN TODAY AS CALIFORNIA WAS FORMED. ABOUT 170 MILLION YEARS AGO THE SEA FLOOR ROSE TO CREATE MOUNTAINS AND MOUNTAINS FELL INTO THE SEA. VOLCANIC ACTIVITY ALSO HELPED IN THE CREATION OF THE SIERRA NEVADA MOUNTAINS AND THE LAKE TAHOE BASIN.Photo of South Lake Tahoe shot from Keller loop road 3
    4. 4. ROCKS: GRANITE Granite is an intrusiveigneous rock. The speckled appearance is due to large crystals. This is the mostcommon type of rock found in the Lake Tahoe Basin. 4
    5. 5. ROCKS:QUARTZ Quartz is also abundant in this area and is characterized by six-sided crystals that form in a variety of colors. 5
    6. 6. PLANT COMMUNITIES ARE THE DEFINING FACTOR WHEN DISCUSSING VARIOUS NATURAL HABITATS. ANIMAL LIFE ISDEPENDENT ON PLANTS FOR SURVIVAL. WATER AND SOIL WILL DETERMINE THE TYPE AND AMOUNT OF PLANT LIFE. 6
    7. 7. PLANTS: SNOW PLANT The snow plant is a common sight in this area, and interesting because of its lack ofchlorophyll. This plant relies on soil fungi to survive. It is mycotroshic in nature and its reddish color stems from this fact. 7
    8. 8. PLANTS: PONDEROSA PINEThe Ponderosa pine have long needles and sharp points onthe end of their large cones. This safety feature is built in to allow for the survival of their seeds and future trees.This type of pine, along with the Jeffrey pine are common in the dry mountain forrest of the Sierras. 8
    9. 9. Animals: RaccoonThe raccoon is also very common in these lower mountain areas. It has adapped to the ever increasing population of man and its omnivorousfeeding habits are well suited to frequent rubbish bin raids. The forests and scrub area found close to water are its natural habitat, but they are quite comfortable in an urban siting as well. 9
    10. 10. Animals: Black Bear The Black Bear is the only survivingbear species left in California. This long haired bear ranges in color from black to blond and often times has a whitepatch on their head or chest. This largeanimal is primarily a vegetarian but also enjoys fish and some small mammals.They are strong climbers and swimmers and live mostly in forests and close torivers and streams. The black bear doesnot hibernate and can be seen foraging in trash bins throughout the day andnight all through the year. Tahoe Basin Locals. 10
    11. 11. Our footprint Burn it allWhite mans contribution 11
    12. 12. CHANGING WEATHER PATTERNS HAVE A DRAMATIC EFFECT ON PLANT LIFE. RAIN FALL AND THE RICHNESS OF THE SOIL DETERMINE THE AMOUNT AND TYPE OF PLANT LIFE. THIS IN TURN WILLDETERMINE THE NUMBER AND TYPE OF ANIMAL SPECIES. AS WEATHER AND CLIMATIC PATTERNS CHANGE SO DO THE ANIMAL HABITATS. LIFE ON EARTH WILL CONTINUE TO EVOLVE AS THE PLANET AGES. Changing 12
    13. 13. RESOURCESEscotto, Erin M. 2012. Photos. South Lake Tahoe.Lyon, James, Tony Wheeler, Marisa Gierlich, Nancy Keller,and John Gottberg. California & Nevada. Hawthorn: LonelyPlanet Publications, 1996. N. pag. Print. Richard, Bryan. A field guide to the wildlife of northamerica. N.p.: Atlantic Publishing, 2009. N. pag. Print. 13

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