Primary Production

Question 1

Primary production

Answer 1

Energy created by plants by photosynthesis

Question 2

Biomass

Answer 2

Material from living organisms

Question 3

Gross primary production

Answer 3

Total amount of energy produced by plants

Question 4

Net primary production

Answer 4

Amount of energy left over after respiration taken into account

Question 5

Secondary production

Answer 5

Convert energy into biomass

Question 6

Photosynthesis

Answer 6

Synthesis of biomass from in organic carbon and water

Question 7

Respiration

Answer 7

The process of energy acquisition at the cellular level

Question 8

Give an ecological example of a close system and an open system

Answer 8

closed: hydrologic cycle, carbon cycle, phosphorus

Open: energy cycle

Question 9

What are some fundamental differences between primary productivity in aquatic and terrestrial ecosystems

Answer 9

Land has more access to sunlight in comparison to aquatic ecosystem. Terrestrial is carbon limited and macrophytes dominated. Water nutrient limited and plankton dominated

Question 10

Which ecosystem type has the highest total average world net primary productivity

Answer 10

Algae beds and Coral reefs

Question 11

Measured as a portion of total global primary productivity one terrestrial and one marine ecosystem type standalone ahead of all the others what are they?

Answer 11

Open oceans and tropical rainforest

Question 12

There are hotspots of Marine primary productivity name to general areas

Answer 12

Upwelling zones, coastal zone’s, areas that receive lots of terrestrial nutrients

Question 13

Name and describe three nutrient categories of lakes going from low to high productivity

Answer 13

Oligotrphic, mesotrophic, eutrophic

Question 14

Which of the three in the previous question is most at risk of summer kill

Answer 14

Eutrophic

Question 15

What is a limiting factor for most terrestrial ecosystems and for marine systems

Answer 15

Terrestrial: carbon
Marine: bioavailable nutrients

Question 16

What units might you use to quantify primary productivity

Answer 16

Mass per unit area per time

Grams of carbon per metre squared per day

Question 17

What is often used as a Proxy measure for the rate of solar energy captured by plants

Answer 17

Gross primary production

Question 18

Both polar bears and lions thrive at zoo

Answer 18

Because both have evolve to thrive in the physical and biological contexts they find themselves

Question 19

Photic zone

Answer 19

Where light can penetrate the water and photosynthesis can happen
98% water is aphotic zone

Question 20

Equatorial regions have lowest production. Why?

Answer 20

Because they do not have the proper nutrients and they have

Question 21

What limits marine production in open ocean and in lakes

Answer 21

Nitrogen in ocean and phosphorus in lakes

Question 22

Oxygen kill

Answer 22

In summer and winter when the bottom layers of the water are cut off from surface

Question 23

Eutrophication

Answer 23

Excess in nutrients causes more productivity which take all the oxygen and cause dead zones