Biodiversity Flashcards
What is biodiversity?
diversity in the hereditary variation across all life forms at the genetic, species, and even ecosystem levels
Species diversity = ?
Species richness + Relative abundance/eveness
What are 3 features in coastal ecosystem diversity?
ocean, forest, mountain
What are the 3 interconnecting levels of diversity and complexity?
the parts, how the parts function, how the parts are organized
What is intrinsic value?
value in and of itself w/o regard for human needs
What is direct value?
products directly consumed by people
What is indirect value?
benefits that do not involve the consumption of resources - recreation and education, ecosystem services
What are Ecosystem services and give a few examples?
The conditions and processes through which natural ecosystems sustain life, including human life - purification of air and water - climate stabilization - crop pollination - soil fertility
Global Gross National Profit (GNP) is how much a year?
How much is ecosystem services worth?
18 trillion
33 trillion/year
Because of human activities how much greater is the current extinction rate than the background rate?
100-1000 x greater
- current rate of loss is unprecedented
What percentage of amphibians is globally threatened by extinction?
41%
Globally what percentage of vertebrates is globally threatened by extinction?
10-20%
What are the threats to biodiversity driven by?
growth and size of human population, human technology and consumption of natural resources
Which is the most biologically diverse region/province in Canada?
BC
What is the difference between red and blue listed species?
red is extirpated, endangered or threatened
blue is special concern