Chapter 14: Population Ecology Flashcards Preview

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Flashcards in Chapter 14: Population Ecology Deck (12)
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1

Habitat

The place where an organism or species normally lives.

2

Species

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.

3

Population size

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

4

Population Density

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

5

Crude Density

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

6

Ecological Density

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

7

Population Dispersion

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

8

Clumped Dispersion

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

9

Uniform Dispersion

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

10

Random Dispersion

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

11

Quadrant

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

12

Mark-recapture method

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