Vocabulary
What is an invasive species?
A species not original to the area that causes ecological damage.
This type of succession starts with nutrient rich soil.
What is secondary succession
any factor in the environment that does not depend on the number of members in a population per unit area to affect the population
What is density independent factors
Disease, food availability, predation, competition
Density-dependent limiting factors
List all the types of consumers and what they consume
carnivore - meat
omnivore - plants and meat
herbivore - plants
detritivore/decomposer - dead stuff!
Pioneer species for secondary succession
grasses/weeds
What is the importance of decomposers/detritivores in an ecosystem?
to break down dead stuff and recycle nutrients
The type of growth is shown in human population worldwide
What is exponential growth
Population A has 200 blue jays in 2 square acres. Population B has 2000 blue jays in 50 square acres. Which population is more at risk of predation?
Population A
Energy in a food web flows in what direction:
from the thing being eaten to the thing eating it.
True or False: a climax community differs from place to place.
TRUE
List the levels of ecological organization started at the smallest level.
organism, population, community, ecosystem (biome, biosphere)
DRAW and NAME the type of population growth that most populations follow. Make sure to label the carrying capacity
Which of the following statements is correct? a.Population size of predators increases when their prey is scarce. b.Competition for resources is density-independent when food is plentiful. c.Disease is density-dependent because transmission occurs more easily when a population is large. d.A change in average temperature is a density-dependent factor because fewer organisms can acclimate to variations in temperature.
c.Disease is density-dependent because transmission occurs more easily when a population is large.
A keystone species is one that.....
is of great importance to the food web/ecosystem, without it would cause lots of disruptions.
Moss and lichen are examples of this
What is a pioneer species
List the seven characteristics of life
Suppose in a population of 1000 wild horses, there are 400 births and 200 deaths. Also, 200 new horses join the population from an area that was destroyed by fire, and 400 horses are captured by park rangers. Describe the overall change in this horse population.
Because a total of 600 horses are added and a total of 600 horses are lost, the population change is 0
Which factor would INCREASE the carrying capacity for white-tailed deer in an Eastern temperate forest ecosystem? A. The re-introduction of the Eastern cougar into North Carolina. B. A large migration of the closely related mule deer, into the East. C. The construction of new roads and increased traffic through woodland areas. D. The re-introduction of the American chestnut tree, which produces many seeds and leaves for food.
D. The re-introduction of the American chestnut tree, which produces many seeds and leaves for food.
Draw a trophic pyramid for the following food chain and label the trophic number, name, and amount of energy available if the producer starts with 1000kcal of energy.
Grass -> caterpillar -> bird -> cat
CHECK BOARDS
Climax community