Chapter 14: Population Ecology

Question 1

Habitat

Answer 1

The place where an organism or species normally lives.

Question 2

Species

Answer 2

Organisms that resemble one another in appearance, behaviour, chemistry, and genetic makeup, and that interbreed, or have the ability to interbreed, with each other under natural conditions to produce fertile offspring.

Question 3

Population size

Answer 3

The number of individuals of a specific species occupying a given area/volume at a given time.

Question 4

Population Density

Answer 4

The number of individuals of the same species that occur per unit area or volume.

D=N/S

S-space
D-density
N- total numbers

Question 5

Crude Density

Answer 5

Population density measured in terms of number of organisms of the same species within the total area of the entire habitat.

Question 6

Ecological Density

Answer 6

Population density measured in terms of the number of individuals of the same species per unit area or volume actually used by the individuals.

Question 7

Population Dispersion

Answer 7

The general pattern in which individuals are distributed through a specified area.

Question 8

Clumped Dispersion

Answer 8

The pattern in which Individuals in a population are more concentrated in certain parts of a habitat

Question 9

Uniform Dispersion

Answer 9

The pattern in which individuals are equally spaced throughout a habitat.

Question 10

Random Dispersion

Answer 10

The pattern in which individuals are spread throughout a habitat in an unpredictable and patternless manner.

Question 11

Quadrant

Answer 11

A sampling frame used for estimating population size;frames can be real or virtual.

Question 12

Mark-recapture method

Answer 12

Sampling technique for estimating population size and density by comparing the proportion of marked and unmarked animals captured in a given area; sometimes called capture-recapture.

Equation: M/N= m/n or N=Mn/m

M= total # marked 
N= total population 
m= # of recaptures 
n= size of second sample