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22 Cards in this Set

  • Front
  • Back
Chemo-
- Energy from molecules

- Energy from molecules
Litho-
- energy from inorganic molecules (without carbon)
- energy from inorganic molecules (without carbon)
Organo-
- energy from organic molecules (with carbons)

- energy from organic molecules (with carbons)
Auto-
- Carbon from inorganic sources (like CO2)
Hetero-

- Carbons from organic sources
Niche

environment occupied by a single species

Habitat
- location of mixed community of distinct niches
Ecosystem

- communities of organisms interacting among themselves and with their environment
Roles of Microorganisms

typically defined in terms of nutrient cycles

Dynamics

Population changes in response to environment
Primary Producers
- remove oxidized minerals from the environment - generate reduced carbon compounds - synthesize organic matter from CO2 - Autotrophs: Phototrophs and Lithotrophs - assimilation


- remove oxidized minerals from the environment


- generate reduced carbon compounds


- synthesize organic matter from CO2


- Autotrophs: Phototrophs and Lithotrophs


- assimilation
Consumers
- use simple reduced carbon compounds from accumulated organic waste in enviro - Remove reduced compounds from the environment - generate alternative reduced carbon compounds (fermentation) or oxidized CO2 (respiration) - heterotrophs: organotrop...


- use simple reduced carbon compounds from accumulated organic waste in enviro


- Remove reduced compounds from the environment


- generate alternative reduced carbon compounds (fermentation) or oxidized CO2 (respiration)


- heterotrophs: organotrophs and phototrophs


- dissimilation
Decomposers
- Remove complex reduced carbon compounds from the environment - break down complex organic matter from detritus - Organoheterotrophs - generate simple reduces carbon compounds or oxidized minerals - dissimilation


- Remove complex reduced carbon compounds from the environment


- break down complex organic matter from detritus


- Organoheterotrophs


- generate simple reduces carbon compounds or oxidized minerals


- dissimilation
Marine Environment
- general oligotrophic (low nutrient levels)

- general oligotrophic (low nutrient levels)
Neuston/Euphotic Zone
- phototrophic organisms - support organoheterotrophs - most dense concentration of microbial activity


- phototrophic organisms


- support organoheterotrophs


- most dense concentration of microbial activity

Aphotic Zone
- fewer organisms - heterotrophs & lithotrophs


- fewer organisms


- heterotrophs & lithotrophs
Benthos
- Organoheterotrophs (10% of oceans reduced organic matter makes it to the ocean floor) - Lithotrophic (live throughout water column but most concentrated at ocean floor) use minerals available at earth's crust


- Organoheterotrophs (10% of oceans reduced organic matter makes it to the ocean floor)


- Lithotrophic (live throughout water column but most concentrated at ocean floor) use minerals available at earth's crust
Oxygenic Photoautotrophs


- top of water column


- can be primary producers

Anoxygenic Photoautotrophs
- grow in water column where light is still present - can be primary producers


- grow in water column where light is still present


- can be primary producers
Aerobic Heterotrophs
- top and middle of water column - O2 dependant respiration - consumers - associated with organic matter of primary producers - alters BOD


- top and middle of water column


- O2 dependant respiration


- consumers


- associated with organic matter of primary producers


- alters BOD
Organoheterotrophs
- middle of water column - fermentation and anaerobic respiration


- middle of water column


- fermentation and anaerobic respiration

Lithoautotrophy
- will occur wherever there are inorganic minerals that can act as electron donors and electron acceptors

- will occur wherever there are inorganic minerals that can act as electron donors and electron acceptors