Unit 1 (Modules 6-7) Flashcards
Producers
Plants, algae, and some bacteria that uses the sun to produce usable forms of energy, such as sugars
Cellular Respiration
The process by which cells convert glucose into energy in the absence of oxygen
What does photosynthesis do to energy
Captures it
What does cellular respiration do to energy?
Releases it
Primary productivity
The rate of converting solar energy into organic compounds over a period of time
Gross Primary Productivity
The amount of solar energy that producers in a ecosystem capture via photsynthesis over a given amount of time (GPP)
Net Primary Productivity
The energy captured by producers in an ecosystem minus energy producers rispire
What is the equation for calculation NPP
GPP - R
What are the units for NPP in energy and biomass
Energy = Kcal/m^2/ year. Biomass= C/m^2/year
Biomass
The total mass of all living matter in a specie area
Standing crop
The amount of biomass present in an ecosystem at a particular time
Primary Producers
Very low efficentinly in converting available sunlight into usable energy
Wavelengths of light that producers can’t absorb are ———-
Reflected
Wavelengths of light that producers can’t absorb are ———-
Reflected
If there is more productivity ————
The more herbivores can be supported
When comparing NPP,
We are measuring the change in a ecosystem
When comparing NPP,
We are measuring the change in a ecosystem
Consumer
An organism that is incapable of photosynthesis and must therefore obtain energy by consuming other organisms ( Hetertroph Herbivore)
Herbivore
A consumer that eats producers (PRimary COnsumer)
Carnivore
A consumer that eats other consumers
Carnivore
A consumer that eats other consumers
Secondary Consumer
A carnivore that eats primary consumers
Tertiary Consumer
A carnivore that eats secondary consumer
Tropic Levels
Transfer of matter and energy; successful level of organisms consuming one another
Food chain
The sequence of consumption from producers through tertiary consumers
Scavenegers
An organism that consumes dead animals (wait till something already dead)
Scavenegers
An organism that consumes dead animals (wait till something already dead)
Detrivore
An organism that specializes in breaking down tissue and waste products into smaller pieces (dead but eat smaller animals)
Decomposters
Fungi and bacteria that complete the breakdown process by converting organic matter into small elements and molecules that can be recycles back into the ecosyem (chemically break down food first)
Decomposters
Fungi and bacteria that complete the breakdown process by converting organic matter into small elements and molecules that can be recycles back into the ecosyem (chemically break down food first)
Ecological Efficenty
The proportion of consumed energy that can be passed by one trophic level to another
Ecological Efficenty
The proportion of consumed energy that can be passed by one trophic level to another
10 % rule
Of the total biomass available of the given trophic level, only about 10% (5-25%) can be converted into enegery at the next given higher trophic level
Trophic Pyrimaid
A representation of the distribution of biomass, numbers, or energy amoung trophic levels
Food Web
A model of how energy and matter move through 2+ interconnected food chains
Food Web
A model of how energy and matter move through 2+ interconnected food chains
When do feedback loops occur?
When the result of a process returns back to the system and change the rate of process
(Positive and negative feedback loops)
Positive feedback loops
- Move to an extreme
- good and bad
Negative feedback loops
- Stabalizes a system
- EX: Air COnditioner
