Vocabulary
Effect on Populations
Population Density & Growth
Ecosystems
Potpourri
100

These are the living parts of an ecosystem.

What are biotic factors?

100

When natality is higher than mortality.

What is the population increases?

100

The term for this type of growth

 What is exponential?

100

A single ecosystem may contain many of these - a term for the area in which organisms live.

What are habitats?

100

The term for when living things move into a population

What is immigration?

200

These is term for the nonliving things in an ecosystem

What are abiotic factors?

200

When emigration exceeds immigration.

What is the population decreases?

200

The population of turtles in an area that is 10m long and 12 m wide when direct observations show there are 2 in one square meter.

What is 240 turtles?

200

 A volcanic eruption occurs in an area and wipes out nearly all living organisms in the local ecosystem. This is this type of limiting factor. (Hint! Density-dependent or density-independent)

 What is a density-independent factor?

200

The number of offspring an organism can have over her lifetime under ideal conditions.

What is biotic potential?

300

All the different populations that live together in an area.

What is a community?

300

This is the effect on a monogamous population with an unbalanced sex ratio (male/female).

What is that reproduction/population declines?

300

You are observing a population that has a mortality rate of about 70% its first year and about 10% as young adults. This is the survivorship pattern.

What is type III?

300

These are 5 examples of abiotic factors

 What are sunlight, water, oxygen, temperature, soil, etc...?

300

You're a field ecologist assigned to keeping track of the effect of a local pollutant on a species. This is the age structure diagram that would indicate the species is not doing well.

What is D?

400

Environmental factors that prevent a population from increasing

What are limiting factors?

400

Population growth % is determined by this formula.

 (natality + immigration) - (mortality + emigration) /1000 * 10%

400

Exponential growth shown on a graph makes a _______ curve; logistic growth shows an ______ curve.

400

 This is an organism's role in its habitat

What is its niche?

400

In an ecosystem, the levels of organization from largest to smallest are these.


 

What are: ecosystem, community, population, organism/species?

500

The number of individuals in a specific area.

What is population?

500

 This is how immigration and emigration differ from migration.

Migration is temporary - immigration & emigration imply that the organisms will stay in their new area. 

500

When it comes to limiting factors, this is the difference between density-dependent and density-independent?

What is ... for density-dependent, the factor affects the population based on how many organisms are in that area. With density-independent, the factor affects the population no matter how many are present.

500

Term for this type of population growth:

 What is logistic?

500

An algae-eating snail population lives in a small pond. The amount of algae in the pond is a limiting factor that will help determine this factor.

What is carrying capacity?