Ecosystems
What are the ecological levels of organization?
Organism, population, community, ecosystem, biomes, and biosphere
is the process by which natural communities replace (or “succeed”) one another over time.
Succession
a water based ecosystem typically defined by:
Salt content
Availability of sunlight
Concentration of dissolved nutrients
Key Features of a population:
Size, Density, Dispersion
Describes an organism’s role (or job) in its environment
Niche
What are the 3 levels of biodiversity
Genetic, species, ecosystem
_____ type of lakes are very low in nutrients.
Oligotrophic
Type of measuring for mobile organisms
Mark and recapture
Is any interaction that involves a close, long-term relationship between two DIFFERENT species
Symbiosis
What are the 2 ways of measuring biodiversity
Richness and eveness
4 characteristics that define a terrestrial biome
Temperature
Soil
Amount of light
Amount of water
3 Types of dispersion
Clumped, uniform, and random
on and energy pyramid 10% of energy from the previous level is available for the next. Where does the other 90% of energy go?
Heat
if this species was removed it would have drastic effects on the ecosystem.
EX: Wolves in Yellowstone
Keystone Species
average weather conditions in an area over a long period of time.
Climate
live in stable environments
reproduce more slowly; fewer offspring
strong / well protected
longer life expectancy
usually large
Type 1 & 2 survivorship curve
High levels of parental care
If the producer has 10,000 units of energy, how much energy do secondary consumer have?
100
Three main types are water, air, and land
Pollution
show changes in the climate over time and can be used to show the effects of human activity on the climate
Climatograms
effects are not influenced by population size,
Density Independent Factors