STANDARD 6: Stability in an ecosystem is a balance between
effects. As a basis for understanding this concept:
6a: Biodiversity is the sum total of different kinds of organisms
affected by alterations of habitats.
6b: Analyze changes in an ecosystem resulting from changes in
activity, introduction of nonnative species, or changes in
6c: Fluctuations in population size in an ecosystem are
determined by the
relative rates of birth, immigration, emigration, and death.
6d: Students know how water, carbon, and nitrogen cycle between
resources and organic matter in the ecosystem and how oxygen
photosynthesis and respiration.
6e: A vital part of an ecosystem is the stability of its
6f: At each link in a food web some energy is stored in newly
structures but much energy is dissipated into the environment as
dissipation may be represented in an energy pyramid.
California Standards for Biology
Environmental Protection Agency (EPA) - home page. A good start
searching for current issues on human activity affecting the
National Wildlife Magazine - A good Resource for both Human
Wildlife issues (endangered, invasive). Full text articles!
Air Pollution issues
Habitat loss issues
Ozone depletion issues
Air Pollution from EPA
Deforestation (Causing Decline of Forests)
A variety of Human influences on the environment from NASA.
Human effect on the environment: Several Articles
Red Rides: The dangers of Algae Bloom
Birds - How much do they eat in a day? Interesting and sometimes
Food Webs - Interactive: n four different ecosystems, place the
the correct trophic level, and get the food web in return.
Nitrogen Cycle - Great simplifying animation!
INVASIVE SPECIES - The EPA list and data Sheets.
Ballona Wetlands Trust - Main page
Ballona Wetlands - Photos by Jonathan!
Mediterranean Chaparral (us!)- Background
World Human Population throughout history - GREAT!!!
Earth without Humans - Article, Video, Timeline with audio Check
Global Data Base for Invasive Species
Invasive Species - from National Geographic (although not the
offers an introduction and another good article). Recommended -
pick up the
issue form the school library.
Biodiversity by location - A vast data base
THE STORY OF STUFF....
A student's guide to pests in the US
Birds in Solstice Canyon