Parts of the Parts of the EcosystemEcosystem

What is Ecology?What is Ecology?

Study of the Study of the interactions between interactions between organisms and organisms and

their environmenttheir environment

ECOSYSTEMS ECOSYSTEMS An An ECOSYSTEMECOSYSTEM is made of all is made of all the living & nonliving things that the living & nonliving things that interact in a particular areainteract in a particular areaEcosystems can beEcosystems can be

large or smalllarge or small

ECOSYSTEMS ECOSYSTEMS

•The living parts of an ecosystem are called BIOTIC factors

•Examples: trees, plants, flowers,

insects, animals

ECOSYSTEMS ECOSYSTEMS The non-living things in an The non-living things in an

ecosystem are called ecosystem are called ABIOTICABIOTIC

factorsfactorsExamples : water, rocks, soil, Examples : water, rocks, soil, air, temperature, wind, carbon air, temperature, wind, carbon

dioxide, nutrients, sunlightdioxide, nutrients, sunlight

Organization in the Organization in the EnvironmentEnvironment

Ecologists have arranged the Ecologists have arranged the environment in different levelsenvironment in different levels

OrganismOrganism

PopulationPopulation

CommunityCommunity

EcosystemEcosystem

BiosphereBiosphere

The 5 Levels: The 5 Levels: #1 Organism#1 Organism

1. 1. An An individual individual is is a single organism.a single organism.

Ex: an alligator, a human, an oak tree

The 5 Levels:The 5 Levels:#2 Population#2 Population

A population is a group of individuals of the samespecies in the same area.

Ex: group of alligators, herd of deer

The 5 Levels:The 5 Levels:#3 Community#3 Community

A community consists of all of the populations of different species that live and interact in an area.

The 5 Levels:The 5 Levels:#4 Ecosystem#4 Ecosystem

An ecosystem is made up of a community of organisms and its abiotic environment

The 5 Levels:The 5 Levels:Level #5 BiosphereLevel #5 Biosphere

The biosphere is the part of Earth where life exists

Salt Marsh EcosystemSalt Marsh Ecosystem

Organism- egret, Seaside sparrow, Periwinkle Organism- egret, Seaside sparrow, Periwinkle snail, oyster, Laughing gullsnail, oyster, Laughing gull

Population- Laughing gull, CodgrassPopulation- Laughing gull, Codgrass Community- Sparrows eat the crabs, algae Community- Sparrows eat the crabs, algae

grows on grass, snail uses grass as shelter grows on grass, snail uses grass as shelter and protectionand protection

Ecosystem- how does temp., precipitation, soil Ecosystem- how does temp., precipitation, soil affect the organisms?, river brings in nitrogen affect the organisms?, river brings in nitrogen which helps the algae growwhich helps the algae grow

Biosphere- where all life livesBiosphere- where all life lives

Biotic and Abiotic FactorsBiotic and Abiotic Factors

Biotic:Biotic: Laughing gulls, seaside sparrow, Laughing gulls, seaside sparrow, codgrass, snail, algae, jellyfish (any of codgrass, snail, algae, jellyfish (any of the animals or plants)the animals or plants)

Abiotic: Abiotic: sunlight, river (water), sunlight, river (water), temperature, soil, rain (weather), temperature, soil, rain (weather), nutrients from the nitrogennutrients from the nitrogen