Freshwater Ecosystem
Marine Ecosystems
How Populations Change in Size
Types of Population Regulation
Types of Interactions Between Organisms
100
Areas that are periodically under water
What is a wetland
100
Area in which fresh water meets with salt water
What is an estuary
100
All the members of a species living in the same place at the same time
What is a population
100
What are 3 limiting resources?
What is food, space, and water
100
The unique role of a species within an ecosystem
What is a niche
200
Organisms that float near the surface
What is a plankton
200
run parallel to the shore
What is a barrier island
200
A population's ___________ is the number of individuals per unit area
What is density
200
An area defended by one or more individuals against other individuals
What is a territory
200
Each species negatively affects the other (species A harmed; species B harmed)
What is competition
300
Free-swimming organisms
What is a nekton
300
Limestone ridges built by tiny coral animals
What is a coral reef
300
A change in the size of a population over a given period of time
What is growth rate
300
What are 2 types of of population regulation?
What is density dependent and independent factors
300
One organsim lives off a host
What is parasitism
400
Nutrient rich zone near the shore
What is a littoral zone
400
Where is sunlight is not able to penetrate
What is the deep ocean
400
How do you find growth rate?
What is births - deaths
400
What is an example of density dependent factors?
rapid growth, limited resource, predation, disease
400
Each species is helpful to the other
What is mutualism
500
Name one function of a wetland.
- trapping and filtering pollutants - preventing flooding - preventing erosion
500
Where does all of the food for the north and south poles come from?
What is the ocean
500
The ________________ of an ecosystem fora particula species is the max. population that an ecosystem can support forever
What is carrying capacity
500
A hurricane is an example of what kind density factor
What is density independent factor
500
One species benefits while another species is not affected
What is commemsalism
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