Eco,ogy Flashcards
(40 cards)
Levels of ecological organization
Organism
PULATION
COMMUNITY
ECOSYSTEM
BIOMES
Biosphere
number and variety of species within an ecosystem
Species diversity – the
The ability of the ecosystem to support organisms
Carrying Capacity –
factor that limits the survival of organism
- Limiting factor –
range of values that is needed for
organism survival
Tolerance range –
ideal range
Optimum range –
movement of animals into an ecosystem
Immigration –
- movement of animals out of ecosystem
Emigration
– ability to withstand and recover from changes
Stability
single pathway transfer of energy
FOOD CHAIN –
classification which describes its feeding
relationship to another organism
TROPHIC LEVEL A
Interrelated pathway transfer of energy
Food web
energy transfer from one trophic level to the next
Energy Pyramid
shows the total biomass per trophic level
Biomass Pyramid
•
- living matter per unit area
Biomass
• Shows the number of organism at each trophic level
Number Pyramid
one organism benefits ; other unharmed (+,0)
Commensalism –
animal feeds on plants without killing it (
Herbivory –, +
one organism inhibit the growth of another organism
. Amensalism -
e indirect relationship to another organism
Neutralism
occupied area
Habitat niche –
the manner in which and when it reproduces.
• Reproductive niche -
Temperature, landform, land slope, humidity, and other requirements are all part of the physical and chemical niche.
Physical and chemical niche -
• Long winter with freezing temperature; Short summer
Tundra