Dispersion and Migration

Question 1

Phalanx

Answer 1

e.g.) bamboo
intense intraspecific competition
usually later successional stages

Question 2

Guerrilla

Answer 2

e.g.) strawberries
reduces intraspecific competition
runners
usually early successional stages

Question 3

patterns of dispersion

Answer 3

• uniform
• random
• clumped

Question 4

patterns of distribution

Answer 4

• aggregated distribution
• random distribution
• regular distribution

Question 5

types of patchiness

Answer 5

fine-grained

patchy

Question 6

patchy

Answer 6

e.g.) only on oak trees

organism can somehow tell difference

Question 7

fine-grained

Answer 7

e.g.) all types of food available on all types of trees

Question 8

migration types

Answer 8

tidal, diurnal, seasonal

Question 9

dispersal polymorphisms

Answer 9

e. g.) seeds above and below ground

e. g.) winged and non-winged aphids

Question 10

sex-related differences

Answer 10

mammals - males disperse, males often polygamous

pheasants - males defend territory, females disperse

Question 11

Predictive dormancy

Answer 11

• initiated by adverse weather conditions

Question 12

Consequential dormancy

Answer 12

• initiated by adverse weather conditions

disadvantage - preparing for bad conditions

Question 13

Dipause

Answer 13

In many species it is an obligatory part in egg stage

Question 14

Inbreeding advantages

Answer 14

• good for adaptation to local conditions

- gets rid of deleterious mutations rapidly