Relationships
Species Population
Communities and Ecosystems responding to Conditions
Sea Otters!
Competiton
100
An interaction that benefits both species
What is mutualism?
100
Population crash
What is another name for dieback?
100
The most common type of ecological succession.
What is secondary succession?
100
What is the main cause of decreasing numbers of sea otters?
Human activities (pollution, climate change, etc.)
100
Three of the techniques that animals use to get away from predators.
What is camouflage, chemical warfare, mimicry?
200
An interaction that benefits one species, but has little effect on the other.
What is commensalism?
200
Carrying Capacity
What is the process in which communities of animals reach the maximum number that their ecosystem can sustain?
200
The gradual establishment of biotic communities in lifeless areas.
What is primary succession?
200
Name two things that have been hurting the sea otter population:
Thorny-headed worms, toxic chemicals, orcas, oil spills, parasites
200
When two niches compete for the same resource.
What is niche overlap?
300
Interspecific occurs when...
Members of two or more species interact to gain access to the same resources.
300
What is the difference between logistic and exponential growth?
Logistic is stabilized growth that rides the carrying capacity while exponential growth goes infinitely up.
300
The gradual change in species composition in a given area.
What is ecological succession?
300
What relationship exists between orcas and sea otters?
Predation
300
When species that compete for similar scarce resources develop specialized traits that allow them to use shared resources at different times, ways, and places.
What is resource partitioning?
400
Occurs when one organism sustains by living on or in another species.
What is parasitism?
400
The pressure an ecosystem exerts on a species in order to keep its population in check.
What is environmental resistance?
400
The ability of a living system to survive moderate disturbance.
What is Inertia?
400
The sea otters cannot recover their population because...
Low reproductive rate
400
If one species starts dominating the resources of an area, these are the options that the weaker species can take?
What is migrate to another area, shift its feeding habits, suffer population decline, become extinct in that area?
500
When a predator-prey relationship pushes the boundaries of the two species' evolutionary traits.
What is coevolution?
500
The period needed for growth rate to fall and the death rate to rise in response to resource over consumption.
What is reproductive time lag?
500
The ability of a living system to be restored through secondary succession after a moderate disturbance.
What is Resilience?
500
"In other words, as ______ species, sea otters help to reveal the conditions of coastal waters in their habitat"
Indicator
500
The three types of population distribution.
What is clumping, uniform, random?
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