Microorganisms in Marine and Freshwater Ecosystem

gases

light

nutrient cycling

estuaries & salt marshes

halotolerant

bottom

anaerobic condtion

fermentative m/os

ferment prodct accumulation

anaerobic m/os

anerobic respiration using sulfate

open ocean

cyanobacteria

pelagic zone

photic zone

aquatic viruses

virioplankton

benthic marine environment

ocean sendiments

seafloor

hydrothermal vents

glaciers & permanently frozen lake

support a variety of m/os

e.g thick ice caps that block solar radiation

streams & rivers

nutrients

autochthonous

in-stream production

allochthonous

out-stream sources

lotic

free running

lentic

free standing

lakes

oligotrophic

oxic

nutrient-poor

eutrophic

anoxic

nutrient-rich

temperature

epilimnion

thermocline

hypolimnion

light penetration

littoral zone

pelagic zone