Primary Productivity
Primary Productivity?
What is the rate which energy is converted to organic molecules by photosynthesis.
What are Tropic levels
The tropic level of an organism is the position it occupies in a food web.
What is Energy flow
The flow of energy through living things in an ecosystem.
Compare food chains and food webs
Food chain outlines whom eats whom. A food web is all of the food chains in an ecosystem
When resources are limited what occurs?
Evolution/Adaptation
Compare Net and Gross primary productivity
Gross primary productivity is the total amount of energy capture from light that is transformed to chemical energy. Net Primary production is gross - rate at which they utilize energy during respiration.
Which Tropic level has the most available energy in the food web?
Primary producer tropic level
What is the 10% rule
The transfer of energy from one tropic level to the next in each tropic level.
What is the source of energy for food webs/food chains?
The sun
Commensalism
(+,-)
What is productivity measured in?
What is measured in unit time
Feeding on other organisms
What are 3 types of energy flow?
Solar radiation; thermal kinetic energy; chemical potential energy
What is Keystone Species
A bee and a flower are an example of what relationship?
Mutualism
What are 3 ways to measure Primary Productivity?
The rate of carbon dioxide utilization, the rate of formation of organic compounds, or the rate of oxygen production
What are decomposers?
Examples include bacteria, fungi and mold that usually eat the dead left behind.
What is photosynthesis?
When organisms use the sun to produce their own food
what organism has the least amount of available energy?
carnivores
Abiotic and biotic
How is solar energy acquired and transferred by living organisms.
Solar energy is transferred through photosynthesis and through the food chain.
What do biochemical cycles demenstrate
Conservation of matter
What does the law of thermodynamics consist of?
The loss of energy that occurs when energy moves from lower to higher tropic levels.
What role does positive and negative feedback loops play in the food web.
When one species is removed or added to a specific food web the rest of the food web can be affected.
What is the most basic process of an ecoysystem?
Flow of energy and cycling of chemcials