Chapter 4 Flashcards
(22 cards)
Whats ecology
The study of interactions of organisms and their environment
What is an ecotone
The transition area between ecosystems
What is an ecological niche
an organisms role or job in an ecosystem
Whats a habitat
The the organisms live
What is a relationship
All interactions with other species in the ecosystem
Whats a nutrition
The organisms method of obtaining food
What is a competition
When two species have the same niche or job
What are biomes
An area that is classified according to the species that live in that location
What are Canadas 4 terrestrial biomes
Tundra (cold)
Taiga (boreal forest)
Grasslands
Temperate deciduous forest
What are Canadas 2 aquatic biomes
Freshwater(lakes rivers and ponds)
Marine (saltwater oceans)
Whats littoral zone
The water that goes to the lake’s edges
Whats the limnetic zone
The lakes open sunlit water
Whats the profundal zone
Where all the water below the depth of light penetration
What factors can limit a population size and determine biodiversity
Soil
Availability to water
Temperature
Amount of sunlight
What are the Soil layers
Litter (o horizon): the top organic
layer made with leaf litter
Topsoil (a horizon): below o horizon
Subsoil (b horizon): below a horizon
Bedrock (end of soil C and R horizons)
What is biotic potential
Describes number of offsprings that a species could produce with unlimited resources
What is the biotic potential regulated by four factors
Birth potential
Capacity for survival
Breeding frequency
Length of reproductive life
What is carrying capacity
The number of individuals of a population that can be supported in equilibrium by and ecosystem
What is density independent
Effects the population no matter the population density (fire, tornado)
What is density dependent
Effects population because of population density (competition)
What is the law of minimum
State that the nutrient in the lest supply is the one that limits growth
What is the law of tolerance
States that an organism can survive within a particular range of an abiotic factor
