Eco,ogy Flashcards
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
Largest land biome
• Long winter with heavy snowfall; Long summer
Coniferous forest
• Climate: Cold winter; hot summer
Decideous
• Maximum biodiversity
Tropical Rainforest
•
low amount of rainfall and high evaporation rate, Frequentfires
Grassland
Hotandcold, dry
Desert
Hotandcold
Estuary –
limestone of corals
Coral reef -
zone –highest tide to lowest tide
Intertidal (littoral)
–lowest tide to edge of continental shelf
Neritic
continental shelf to open ocean
oceanic
gradual process of change and development of ecosystem over time.
ECOLOGICAL SUCCESSION
Starts with formation of new area
Primary succession
Starts with existing area then removal of ecosystem (
Secondary sucwssioh
Startingstageofthepioneerspecies,firstorganismto inhabit the soil
Pioneer
stage of an ecosystem advancing towards its climax community
Intermediate Stage –
Stage in which populations of organisms remain stable and exist in balance
. Climax community -