BIODIVERSITY
Habitat Loss
Habitat Fragmentation- the division of a large habitat area into smaller areas. Affects the amount and type of species that live in the smaller areas.
Alien/Invasive Species
Usually causes a disruption in the ecosystem.
Results in loss of biodiversity and damage to an ecosystem.
Air and Water Pollution
Air Pollution- Consists of chemical substances and particles released into the atmosphere
Water Pollution- Puts chemicals in water supply
Fertilizers cause algal blooms.
Acid Rain- Air pollution causes rain to become acidic (below pH of 7) it damages soil , kills trees (destroys leaves), and lowers pH of lakes and oceans, killing organisms
Overpopulation
housing/buildings, land converted for agricultural use, hunting, fishing
Pollution
Overexploitation
Basic overuse of animals and land that leads to a decrease in populations.
Biomagnification -Increase in concentration of a substance as it moves up the food chain (toxins)
-almost caused extinction for bald eagles
Global Climate Change
5 Effects
Melting of glaciers and rising sea levels
Coastal flooding and shoreline erosion
Heat-related human health problems.
droughts and water shortages
Decline in cold-adapted species like polar bears
major crop losses
Preventing Biodiversity
Sustainable Use-use of natural resources in a way that meets the needs of the present and preserves the resources for the future
Umbrella Species- A species that, if protected, also provides protection to other organisms by default.