Lecture 7

Question 1

Distribution

Answer 1

geographic area where individuals of a species occur

Question 2

Abundance

Answer 2

number of individuals in a given area

Question 3

Apomixis (plants)/ parthenogenesis (animals)

Answer 3

offspring are formed from unfertilized eggs

Question 4

Horizontal spread

Answer 4

offspring produced as the organism grows

Question 5

Genet

Answer 5

individuals can be defined as the products of a single fertilization

Question 6

Ramet

Answer 6

if members of genet are independent physiologically

Question 7

What determines distribution and abundance?

Answer 7

habitat stability
historical factors
dispersal

Question 8

Disturbance

Answer 8

events that kill or damage some individuals, creating new opportunities for other individuals to grow and reproduce

Question 9

Geographic range

Answer 9

the entire geographic region over which a species is found, including areas occupied during all life stages and across seasons

Question 10

Dispersion

Answer 10

spatial arrangement of individuals within a population

Question 11

What factors affect dispersion?

Answer 11

location of resources
competition
dispersal
behavioral interactions

Question 12

Area- based counts

Answer 12

used most often to estimate abundance of immobile organisms; eg. quadrats

Question 13

Distance methods

Answer 13

distance of individuals from a line or point are converted into estimates of abundance; eg. line transects

Question 14

Relative Population size

Answer 14

number of individuals in one time period or place relative to the number in another

Question 15

Niche modelling

Answer 15

a prediction method

Question 16

Ecological Niche

Answer 16

physical and biological conditions that a species needs to grow, survive, and reproduce