courtney's bio project
TRANSCRIPT
PHOTO ESSAY PROJECT
Courtney PerryBiology 10
RIPARIAN WOODLAND
SAN JOAQUIN WILLOW
BASKET RUSH
ARROYO WILLOW
GRASSLANDS
CALIFORNIA THISTLE SAGE
CALIFORNIA YELLOW VIOLET
CLUSTERED FIELD SEDGE
FOOTHILLS
TRAILING SAGEBRUSH
WESTERN COTTONWOOD
TARRAGON
CHAPARRAL
SUNSET MANZANITA
GIANT WILD RYE
UTAH SERVICE BERRY
CONIFER FORREST
VINE MAPLE
CALIFORNIA MAIDEN HAIR FERN
BUTTERCUP CROWFOOT
SUMMARY OF FORMATION The Sierra Nevada Mountains run 400 miles
north and south and 70 miles east and west. One of the most recognizable features is Lake Tahoe and the highest point of the range is Yosemite Valley. This was formed by glaciers that were made up of 100 million year old granite. These are just a few key features in the important formation of the area that is an attraction to so many.
HISTORY OF BIOTIC COMMUNITIES The granite that was mentioned before was
formed very deep underground. The area of range started to lift upward approximately four million years ago. This caused a major erosion of the glaciers that were exposed to the granite. This began the formation of the many different colored mountain ranges and led to the wide variety of elevations and climates in the Sierra. It is because of this, the five different biotic communities exist.
THE END