Topic 2.1 & 2.2 quiuz questions

species, populations, communites, and ecosystems

As a population increases so does competition for resources.

Intraspecific competition

What function is typical of a tertiary consumer?  

consume herbivores

What function is typical of a primary  consumer?  

Disperse seeds

Population

 "A group of organisms of the same species living in the same area at the same time and which are capable of interbreeding?"

chemosynthesizer

Organisms that get their own food from simple compounds that exist in nature

When would the Carbon Dioxide levels be highest in North America and why?  

When would the Carbon Dioxide levels be highest in North America and why?  

What function is typical of Detritovores?  

Release nutrients back into nature

community

A group of populations living and interreacting with other in a common habitat

One type of mussle called Balanus balanoides only lives in low tide habitat while many others live in high tide habitat.  This enables the Balanus balanoides to limit competition.  The unique set of biotic and abiotic characteristics is called what?  

niche

How to make a pyramid of biomass?

Collect sample dry, and measure by grams per square meter

overshoot

When a population keeps increasing past the carrying capacity.  

dieback

during an exponential growth called a j-curve, the species overshoots the carrying capacity, is met with enormous environmental resistance and a dieback occurs back to the carrying capacity

No two species can occupy the same niche.

true

Fundamental Niche

"The entire set of conditions under which an animal (population, species) can survive and reproduce"

One type of mussle called Balanus balanoides only lives in low tide habitat while Chthaamalus stellatus can live on low strata and high strata rocks.  When both species are found living in the same location the Chthaamalus stellatus only lives on the high strata of rocks due to competition with Balanus balanoides.  

Realized Niche

pyramid of productivity?

graphical representation of the amount of energy that is generated and available as food for the next trophic level. Expressed as J m-2 yr-1.

Pyramid of Productivity shape?

will always be shaped like a pyramid because of entropy.