chaparral. where is chaparral? area’s of chaparral in california (in acres) san diego 1,003,441...
DESCRIPTION
Chaparral is a shrub-land plant community found primarily in California and in the northern portions of Mexico.Chaparral is a shrub-land plant community found primarily in California and in the northern portions of Mexico. CHAPARRALTRANSCRIPT
CHAPARRAL
Where is Chaparral?
Area’s of Chaparral in California(in acres)
San Diego 1,003,441Los Angeles 553,789Riverside 499,160Santa Barbara 440,645San Luis Obispo 417,718Monterey 369,345Ventura 326,447San Bernardino 276,010San Benito 246,623Santa Clara 188,427Orange 111,550Marin 37,566San Mateo 36,152Santa Cruz 32,328
• Chaparral is a shrub-land plant community found primarily in California and in the northern portions of Mexico.
CHAPARRAL
What are characteristics of chaparral shrubs?
• Sclerophyllous (hard-leaved) plants commonly form the foundation of this plant community. They have small, hard leaves,
that roll up, under, or fall off during the normal summer drought
CHAPARRAL
CHAPARRAL
• Fire is a major factor in the dynamics of this Chaparral plant community, and plants are adapted to fire ie. crown-sprouting
shrubs, and annual fire-followers
CHAPARRAL
Fire Followers
• Normal fire frequency should be about 100-400 years, depending on the Chaparral type and location.
• The presence of weeds, and human carelessness has increased the fire frequency to as little as six months
CHAPARRAL
CHAPARRAL
• Some people feel that we should remove Chaparral in urban interface areas
What would happen if we did?
• If you remove Chaparral, grass and weeds will grow
• Weedy fields burn faster than you can drive. By the time you figure out a grassy area is burning, you could be in danger
• There is almost no erosion in clean Chaparral;
• there are large mud slides in areas of Chaparral that have been converted to grass.
• Removing brush would lead to enormous erosion problems.
What would happen if we did?
Chaparral usually covers the rocks but when it rains like January
2006, the chaparral
slides away and the
geology is exposed…rock
slides! Topanga Canyon 1/9/06
Results of erosion
Fires benefit the Chaparral
• Burns release valuable nutrients into the soils.
• Fire can replace old growth with younger plants that will continue to release nutrients into the soil.
• The chaparral does not “need” fire to survive however, as some areas of old growth are thriving today..