LECTURE # 26

TERRESTRIAL ECOSYSTEMS ARE CALLED BIOMES

BIOMES ARE RECOGNIZED AND NAMED ON THE BASIS
OF THE PLANTS THAT ARE IN THEIR COMMUNITIES
BECAUSE PLANTS ARE AT THE BASE OF THE FOOD
CHAINS AND BECAUSE PLANTS DON'T RUN AWAY
WHEN YOU TRY TO OBSERVE THEM



FRESHWATER ECOSYSTEMS ARE DIVIDED
INTO TWO TYPES:
LENTIC HAVE STANDING WATER
LOTIC HAVE RUNNING WATER




LIFE HABIT DESCRIBES WHERE AND HOW AN
ORGANISM LIVES

BENTHOS ARE ORGANISMS THAT ARE ATTACHED TO
OR RESTING ON THE BOTTOM

PERIPHYTON ARE ORGANISMS THAT GROW ON
SURFACES THAT PROJECT OUT OF THE WATER

PLANKTON ORGANISMS FLOAT ON THE SURFACE OF
THE WATER

NEKTON ORGANISMS SWIM, AND MOVE AND NAVIGATE
AT WILL IN THE WATER

NEUSTON ORGANISMS REST OR MOVE AT WILL ON
THE SURFACE OF THE WATER




A RAPIDS ZONE HAS SHALLOW WATER WITH A HIGH
VELOCITY
ONLY ORGANISMS THAT CLING TIGHTLY OR SWIM
STRONGLY LIVE IN THE RAPIDS ZONE

A POOL ZONE HAS DEEP WATER WITH A LOW
VELOCITY, AND MATERIALS SETTLE TO THE BOTTOM




THE MARINE ENVIRONMENT IS DOMINATED BY TIDES
AND WAVES, AND THE DEPTH OF THE OCEAN




THE CLASSIFICATION OF ORGANISMS IS THE SAME
IN THE OCEAN AS IN FRESHWATER