Populations
Biomes
Ecological Relationships
Ecosystem Ecology
Miscellaneous
100
What is population density?
The number of individuals per unit area
100
Using this graph, which biome would you find in a region with moderate temperature and very little precipitation?
Temperate grassland/cold desert
100
This type of symbiotic relationship benefits one and harms the other
Parasitism
100
How does carbon move from the air into living systems
Photosynthesis
100
Two main factors influence the diversity and size of populations on islands. What are they?
The size, and the distance from the mainland
200
What survivorship curve would you expect for frogs, explain.
Frogs produce a high number of eggs but most will die early in life
200
What type of biome is usually located at around 30 degrees latitude north and south of the equator?
Desert
200
An organism's role or job within its environment
Niche
200
How does nitrogen move from the air into living systems?
Microbes fix nitrogen and make it available for other plants and animals to use.
200
Energy that is lost through the trophic level often ends up as what?
Diffuse heat
300
Give an example of density dependent factor limiting population growth
Disease, predation, parasitism
300
Which two biomes would you expect to have the most nutrient rich soils? Temperate deciduous, Tundra, Temperate grasslands, Tropical rainforests, Desert, Boreal
Temperate deciduous, Temperate grasslands
300
A group of individuals from different species hanging out in the same area
Community
300
What is meant by competitive exclusion?
When two species occupy the same niche, one species will eventually outcompete the other and become the only species in the niche.
300
What does NPP stand for and why is terrestrial NPP greater in the Northern Hemisphere?
Net Primary Productivity
More land mass
400
What two work phrase do we use to represent the dotted line on this graph?
Carrying capacity
400
The tundra is one of the biomes with the least amount of precipitation. What is a good explanation for this?
Cold air can hold less moisture than warm air.
400
The Viceroy Butterfly is a Batesian mimic of the Monarch Butterfly. What does this mean?
A non toxic species mimics a toxic one like the monarch butterfly
400
Many warblers in Vermont have very similar niches (insect eaters who feed in the same trees). Studies have shown that different species end up feeding in different parts of the trees with not a lot of overlap. This is a good example of what ecological principle?
Resource partitioning
400
According to this chart, how much energy from primary consumers is passed along to secondary consumers?
1,103 kcal/m2/year
500
When considering population growth we use B.I.D.E to refer to what important concepts?
Birth, Immigration, Death, Immigration
500
What are the two types of measurements scientist used to determine species diversity in an area?
500
Give an example of an indirect species interaction
Beaver, leaf beetle
500
What is the overwhelming trend for latitudinal gradient in species diversity?
Higher diversity near the equator, lower near the poles
500
Describe the difference between a keystone species and a foundation species.
Keystone species are a small portion of the ecosystem and have a large impact on the environment. Foundation species make up a large portion of the ecosystem and have a large impact on the system.