Microorganisms in Marine and Freshwater Ecosystem

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Geography inquiry project

por KOWCH KOWCH

Food Additives

por wong calvin

Eggs are a rich source of protein,which has many uses in food preparation.Prepare a nutritious and interesting one-dish meal with the use of eggs for a group of people

por Jin Yao

Factors Affecting Food Choice

por Gursahib Dhatt - Sandalwood Heights SS (2442)

Microorganisms in Marine and Freshwater Ecosystem

Freshwater Ecosystem

lakes

light penetration

littoral zone

temperature

hypolimnion

thermocline

epilimnion

eutrophic

nutrient-rich

anoxic

oligotrophic

nutrient-poor

oxic

streams & rivers

lentic

free standing

lotic

free running

nutrients

allochthonous

out-stream sources

autochthonous

in-stream production

glaciers & permanently frozen lake

support a variety of m/os

e.g thick ice caps that block solar radiation

Marine Ecosystem

benthic marine environment

hydrothermal vents

seafloor

ocean sendiments

aquatic viruses

virioplankton

open ocean

photic zone

pelagic zone

cyanobacteria

estuaries & salt marshes

bottom

ferment prodct accumulation

anaerobic m/os

anerobic respiration using sulfate

fermentative m/os

anaerobic condtion

halotolerant

Water as Microbial Habitat

nutrient cycling

light

gases