I. Energy Flow

Question 1

What is the movement of energy in an ecosystem

Answer 1

Sun > primary producers > primary consumers > secondary and tertiary consumers

• Energy is lost through heat energy

Question 2

Define primary production (bottom of food chain)

Answer 2

Amount of light energy that is converted to chemical energy by autotrophs (per unit time)

Question 3

Define GPP

Answer 3

Gross primary production of carbon dioxide produced by photosynthesis of plants in an ecosystem in a given period of time

Question 4

NPP = GPP - R

Answer 4

Glucose produced during photosynthesis (GPP) > some of that glucose used to supply energy to drive cellular processes (respiration) and remaining glucose available to be laid down as new material (biomes) are (NPP) net primary production.

Question 5

What limits NPP

Answer 5

Marine/freshwater = light and nutrients control
Terrestrial = moisture temp and to a lesser extent nutrients

Question 6

Precipitation limitation in a terrestrial system has what relation

Answer 6

As net primary production increases, precipitation increases (more rain coming down)