Scaling

Question 1

Isometric

Answer 1

An increase in x creates an identical increase in y

Question 2

Allometric

Answer 2

Something increase to log x but with a slope slightly greater/less than one

Normally describes a relationship where x is body size

Question 3

Kleibers law

Answer 3

Scaling relationship of 0.67 between metabolic rate and SA:V

Per unit of mass, larger animals consume much less energy that smaller animals

Controversial, Kleiber probably wrong

Question 4

Scaling exponent

Answer 4

White and Seymour: much more careful look at scaling exponents and corrected for temperature and exact phylogenetic relationships
0.69 relationship- significantly different from 0.67
Removed ruminants as bacteria continue to ferment when when animal at BMR- otherwise calculation artificially too high
0.68 not significantly different from 0.67

To test metabolic theory if ecology

Question 5

Metabolic theory of ecology

Answer 5

Extension of kleibers law

Metabolic rate of organisms is the fundamental biological rate that governs most observed patterns in ecology

Question 6

West, Brown and Enquist

Answer 6

Supply networks

Recalculated original data set- 0.75 and couldn’t be explained by SA:V

Branch of lungs, capillary networks, tracheal system etc

Question 7

Weibel

Answer 7

Disputed WBE because animals aren’t constrained by BMR

Maximal metabolic rate: relationship between mass and VO2 max is 0.87 and can’t be explained by fractal networks

Question 8

Sustained metabolic scope

Answer 8

SusMS

Ability to increase metabolic rate without experiencing extreme penalties (e.g. Weight loss, reduced life span)

Up to 7x BMR

Limited by what guy can take in