What is biodiversity?What is biodiversity?►Contracted form of “biological Contracted form of “biological
diversity”diversity”►Biodiversity: variety of life forms living Biodiversity: variety of life forms living
within an ecosystemwithin an ecosystem
Which picture represents a Which picture represents a greater amount of biodiversity?greater amount of biodiversity?
High species diversity Monoculture
Which picture represents a Which picture represents a greater amount of biodiversity?greater amount of biodiversity?
Low genetic diversity Higher genetic diversity
BiodiversityBiodiversity► When a habitat is When a habitat is
very diverse with very diverse with a variety of a variety of different species, different species, it is much it is much healthier and healthier and more stable more stable
D = Douglas FirD = Douglas Fir
N = Noble FirN = Noble Fir
C = Western Red CedarC = Western Red Cedar
M = Vine MaplesM = Vine Maples
H = Western HemlockH = Western Hemlock
W = White FirW = White Fir
L = Lodgepole PineL = Lodgepole Pine
WWP = Western White Pine WWP = Western White Pine
BLM = Big Leaf MapleBLM = Big Leaf Maple
WD = Western DogwoodWD = Western Dogwood
Summary QuestionsSummary Questions1.1. What did this simulation What did this simulation
demonstrate?demonstrate?2.2. Why didn't all the different trees get Why didn't all the different trees get
the disease in the second scenario? the disease in the second scenario? 3.3. Why didn't the disease spread as fast Why didn't the disease spread as fast
among the Douglas firs as it did in among the Douglas firs as it did in the first simulation? the first simulation?
Summary QuestionsSummary Questions4. Growing one plant, like in the first 4. Growing one plant, like in the first
simulation, is called a simulation, is called a monoculturemonoculture. . Give other examples of monocultures. Give other examples of monocultures.
5. Why would you need to use insecticides 5. Why would you need to use insecticides and herbicides in a monoculture? and herbicides in a monoculture?
6. If we wanted to help promote wildlife, 6. If we wanted to help promote wildlife, what could we do to the school’s what could we do to the school’s landscaping?landscaping?
