Unit B Ashley and Tori Flashcards
What is ecology?
The study of an ecosystem
What is an ecotone?
A transition area
What are the four terrestrial biomes?
Tundra, Taiga, Temperate Deciduous Forests and Grassland
What is a eutrophic lake?
A lake that eventually fills in and becomes dry land
What is biotic potential?
The maximum number of offspring that a species could produce if resources were unlimited
What is carrying capacity?
The amount of organisms an ecosystem can sustain
What is the difference between a density-dependent factor and a density-independent factor?
Density-independent is a factor that will happen regardless, such as fire or flood. A dependent factor would be a way to control such as disease and food shortage
What are the three forestry practises?
Slash and burn, clear cutting and selective cutting
What is a prescribed burn?
A controlled fire set intentionally in a designated area
What causes eutrophication?
Fertilizer and waste cause plant/algae growth to increase, thus depleting oxygen from water and causing the bottom to fill
What is biological oxygen demand?
The amount of dissolved O2 needed by decomposers to completely breakdown organic matter in a water sample at 20 degrees Celsius over 5 days
What are four factors that affect aquatic environments?
Chemical environment, temperature and sunlight, water pressure and seasonal variation
What are the four levels of soil?
Leaf litter, topsoil, subsoil and bedrock
What are the three zones of a lake?
Littoral (shallow), limnetic (open water), profundal (deep)
What is the difference between a population and a community?
Population is of one species while a community is multiple species living together
