Energy in Ecosystem & BIOMAGNIFICATION Flashcards
Organism interact in order to obtain energy and resources in order to
Stay alive
______ ______ thru an ecosystem in one direction
Sun → autotroph → heterotroph
Energy flow
A model that shows how matter and energy move through an ecosystem. It has arrows that show the direction that energy is being transferred
Phytoplankton → krill →baleen whale
Food chain
A feeding step in a food chan that represents each organism
Trophic level
Name the 5 trophic levels
Primary producer
Primary consumer
Secondary consumer
Tertiary consumer
Quaternary consumer
Shows all the possible feeding relationship at each trophic level in a community
Food web
Diagram that shows the relative amounts of energy or matter contains without each trophic level in a food
Ecological pyramid
- 10% rule-only about 10% of energy available within one trophic level is transferred to organism and the next trophic level
- the rest is lost as heat (90%)
Energy pyramid
Based on the numbers of individual organisms at each trophic level
Pyramid of numbers
-The total amount of living tissue within a given trophic level is called biomas
- a pyramid of biomass represents the amount. If potential food available for each trophic level in an ecosystem
Biomass pyramid
Energy and matter are constantly being recycled. A balance of everything on in an ecosystem is called
Homeostasis
Gradual I crease in toxicity level are passed on and compounded in the animal that eats the previous organism in the chain
Biomagnification
Steady increase in the ______ of harmful substances as the trophic level increases
Concentration
Lower trophic levels have _____ concentrations of contaminants than higher levels
Smaller
Organisms threatened with extinction
Endangered
