Populations
Geographic Range
A population's carrying capacity is determined by
limiting factors (density-independent / dependent)
Why do habitats have a larger population of producers than top-level consumers?
There is a lot of energy at the bottom level of the pyramid. as you move up energy decreases by 90%.
The ultimate source for most of our planet's energy
the Sun
The study of organisms and their environment is called...
Ecology
Rapid growth as a result of ideal conditions with unlimited resources is referred to as?
Exponential Growth
Limit the size of a population in relation to its size
Density-dependent
Give TWO examples of a biotic factor.
any living factor
A ________ _______ shows multiple overlapping food chains and gives us a better understanding of the transfer of energy in an ecosystem.
Food web
What trophic level has the most energy?
Producers
What two factors help you determine a population's density?
# of individuals
Size/Amount of space
Limits the size of all populations regardless of population size.
Density-independent
Give TWO examples of an abiotic factor.
any nonliving factor
Create a Food Chain including 4 organisms
-must start with a producer
-arrows must point in the correct direction
Predator and prey relationships and herbivore and producer relationships are examples of what type of limiting factor?
Density dependent limiting factors
What are the three types of dispersion patterns? Describe why each pattern occurs.
Clumped = uneven resources
Random = ample resources with no competition
Uniform = ample resources with competition or territorial behavior
Some ocean birds, such as gannets, breed on remote, rocky islands where they are safe from predators. Many gannets flock to these islands each year to build nests. Because the islands are small, only a certain number of birds can nest and reproduce.
What type of limiting factor is this?
Density-dependent
The maximum number of individuals an environment can support is referred to a population's
Carrying capacity
This process is utilized by producers at the bottom of the ocean in order to produce energy with no sunlight.
Chemosynthesis
The third consumer in a food web is called the __________ ___________
Tertiary Consumer
Rapid growth
Slow growth
No growth
Thrips are small insects that feed on apple blossoms. They can be a serious pest to apple growers. In recent years, a severe drought hit apple orchards in the state of New York. Because of the drought, most apple trees did not blossom. The thrip population declined sharply because their food source disappeared.
What type of limiting factor is this?
Density-independent
The ecological level of organization that includes both biotic and abiotic factors is
Ecosystem
Create a 5 level Energy Pyramid starting with 45,670 kCal
Each Level: 45,670 kCal, 4,567 kCal, 456.7 kCal, 45.67 kCal, and 4.567 kCal
What is the difference between an autotroph and a heterotroph?
Autotrophs make their own food (carbs)
Heterotrophs get their food (carbs) from consuming other organisms