Chapter 3

Ecosystems

Provides a sustainable balance of biotic and

abiotic factors

The Chesapeake Bay

SPARTINA ALTERNAFLORA

Littoral zone

Ecology

• Shows the balance of :

Ernst Haeckle mid 1800’s

Ecosystems

Energy enters the system and is able to do …..

the Types of Energy are …

• CRESTMN – showing the 7 types

• Chemical, radiant, electrical, solar,thermal, mechanical,nuclear

units of Energy are known as the

• Kilojoules emanating from the calorie which determines……

if there is Energy, there is

Leading to the laws of

And biological energy…….

• States that by absorbing or releasing E is the same.

The second law states

• The amount of Energy to work decreases the amount of usable Energy and becomes diffused.

and the measure of this disorder is called ….

the Biosphere has the 4 realms of…

Photosynthesis and celluar respiration provide….

• 6CO2 +12 H20+ Radiant Energy

• C6H1206+ 6 H20+6 02

• AKA SUGAR +

EXCEPT IN…………….

• CHEMOSYNTHESIS

Self nourishment organisms are known as

• Autotrophs or producers• Consumers who eat producers are known as • Herbivores• Secondary consumers eat• Primary consumers• And those who eat a variety of life forms are• Omnivores

Other feeders are ….

• Detrivores who eat» DETRIUS AKA» DECOMPOSING PLANTS AND ANIMAL

» Saprophores who are microbial » decomposers who….» Break down dead organic material

» Thus creating a…..

»FOOD WEB

Graphic representations of the energy levels of each trophic levels is an …

Ecosystem Productivity is

• ..the rate at which energy is captured during ……

• PHOTOSYNTHESIS • Since plants respire to provide energy for

their own use which acts as a drain, this is known as…..

• NPP or…..• Net Primary Productivity

NPP can be compared on Earth …