Marine & Freshwater Ecosystem

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M/O in 'liquid'

M/O in marine

M/O in benthic marine environment

benthos = seafloor + thermal vents

Aquatic viruses

Virioplankton

M/O in open ocean

Proteorhodopsin will supply ATP

Cyanobacteria for fixing nitrogen

Oligotrophic environment

salt marshes model

Winogradsky columns

estuaries & salt marshes

M/O ins freshwater

M/O in lakes

Temperature

Hypolimnion

Thermocline

Epilimnion

Deep lakes

pelagic zone

littoral zone

Nutrient status

eutrophic

oligotrophic

Stream & rivers

Ability process organic matter limited

Diurnal oxygen shifts

Eutrophic

non-point sources of pollution

point sources of pollution

Nutrients

out-stream sources (allochthonous)

in-stream production (autochthonous)

lentic

lotic

glaciers & permanent frozen lakes

chemosynthetic community

polar ice caps = Antartica, Artic

M/O in water

Nutrient cycling

phytoplankton (including picoplankton)

Light

photoic zone

Gases

N2,H2,CH4

CO2

O2