Chapter 21 Flashcards
Types of biodiversity
Number of species
Genetic diversity
Ecosystem diversity
Why do people care about the loss of biodiversity?
Aesthetic reasons
Ethical reasons
Human uses (resources, food, agriculture,
Interconnections
Positive human psychological effects
Convolution
Biodiversity important ?
Protects and provides ecosystem services that support human agriculture: pollination, nutrient cycling, pest control, and solid development and maintenance
Habitat destruction
Elimination of a species habitat or the place where it lives and obtains resources for survival
Lost habitat= lost species
Caused by: agriculture, mining, forestry, pollution, industrial development
Six causes of loss biodiversity?
Habitat loss/ destruction/ Degradation/ fragmentation
Introduced species
Pollution
Population growth
Overharvesting
Climate change
Habitat fragmentation
Large natural areas subdivided into smaller areas
Large predators are threatened because they require large home ranges
Introduced invasive species
Can disrupt communities by competing with or preying on native species
Introduced purposely or accidentally
Pollution
The release of poisons, toxins, excess nutrients, other waste products
HIPPO?
What should be added ?
Habitat loss Introduction of invasive species Pollution Pollution growth Overexploitation
Global Climate change should be added
Overexploitation
When human use of natural resource exceeds its reproductive rate
Overharvesting of wildlife and forest products
Threatens various animal and plant species
Ex: illegal hunting
Biodiversity hotspots
Areas of high diversity and many unique species
Ex: Madagascar, south central china, Brazil
Mesoamérica
Caribbean
Some things people can do to reduce habitat loss?
Protect biodiversity hotspots
Eating low on the food chain
Use less wood, paper, plastics
Choose products that were harvested sustainably
Increase financial aids to developing countries
Slow population growth rate
Endangered species act
Helped save many species that are in danger of becoming extinct
Ex: American alligators, bald eagles, California condor
Some things people can do to reduce their impact on the environment?
Reduce fossil fuel use
Reduce the impact of meat consumption
Reduce pollution
Educate yourself and others
