© 2004 Plano ISD, Plano, TX

IntroducingIntroducing

© 2004 Plano ISD, Plano, TX

the study of the relationships the study of the relationships between biotic and abiotic between biotic and abiotic

factors in environmentsfactors in environments

the study of the relationships the study of the relationships between biotic and abiotic between biotic and abiotic

factors in environmentsfactors in environments

ecoeco (G) root home, (G) root home, abodeabode

ecoeco (G) root home, (G) root home, abodeabode

ecoecoclimateclimateecoecoclimateclimateecoecosystesystemm

ecoecosystesystemm

ecoecotouristourismm

ecoecotouristourismm

log, -o, ylog, -o, y (G) suffix study (G) suffix study ofof

log, -o, ylog, -o, y (G) suffix study (G) suffix study ofof

zozoologyologyzozoologyologyepidemiepidemiologologyy

epidemiepidemiologologyy

climatclimatologyologyclimatclimatologyology

EcologyEcologyEcoEco

logylogy

© 2004 Plano ISD, Plano, TX

Biotic FactorsBiotic FactorsBioBio

bio(s), bio(t)bio(s), bio(t) (G) root(G) root lifelife

bio(s), bio(t)bio(s), bio(t) (G) root(G) root lifelife

include plants, animals, fungi, include plants, animals, fungi, microorganismsmicroorganisms

include plants, animals, fungi, include plants, animals, fungi, microorganismsmicroorganisms

biobiologylogybiobiostatisticsstatisticsbiobiographgraphyy

biobiotechnolotechnologygy

biobiospherespherebiobiomechanicsmechanicsbiotbioticicbiobiofeedbafeedbackck

© 2004 Plano ISD, Plano, TX

Examples of Biotic (living)

Factors

Examples of Biotic (living)

Factors

© 2004 Plano ISD, Plano, TX

Abiotic FactorsAbiotic Factors

include air, water, soil, include air, water, soil, temperature, wind, source of temperature, wind, source of

energy (usually sun)energy (usually sun)

include air, water, soil, include air, water, soil, temperature, wind, source of temperature, wind, source of

energy (usually sun)energy (usually sun)

AA

a, ana, an (G) prefix not, without(G) prefix not, withouta, ana, an (G) prefix not, without(G) prefix not, without

aatoxictoxicaatoxictoxicaamoralmoralaamoralmoralaabioticbioticaabioticbiotic

© 2004 Plano ISD, Plano, TX

Examples of Abiotic (non-

living) Factors

Examples of Abiotic (non-

living) Factors

© 2004 Plano ISD, Plano, TX

a large geographic area with a large geographic area with specific specific plantplant and animal and animal

groups. The groups. The climateclimate and other and other abiotic factors determine abiotic factors determine

what type of biome exists.what type of biome exists.

a large geographic area with a large geographic area with specific specific plantplant and animal and animal

groups. The groups. The climateclimate and other and other abiotic factors determine abiotic factors determine

what type of biome exists.what type of biome exists.

BiomeBiome

© 2004 Plano ISD, Plano, TX

desertdesertdesertdesert

grasslandgrasslandgrasslandgrassland

tropical rain tropical rain forestforest

tropical rain tropical rain forestforest

deciduous forestdeciduous forestdeciduous forestdeciduous forest

coniferous coniferous forestforest

coniferous coniferous forestforesttundratundratundratundra

Major Biomes of the WorldMajor Biomes of the World

oceanoceanoceanocean

© 2004 Plano ISD, Plano, TX

What biome do we live in?

Have you lived in another biome?

© 2004 Plano ISD, Plano, TX

Levels of OrganizationLevels of Organization

smallest smallest unit of unit of living living thingsthings

smallest smallest unit of unit of living living thingsthings

group of group of similar cells similar cells organized organized to work to work togethertogether

group of group of similar cells similar cells organized organized to work to work togethertogether

group of group of different different kinds of kinds of tissues tissues workingworking togethertogether

group of group of different different kinds of kinds of tissues tissues workingworking togethertogether

group of group of organs organs working working togethertogether

group of group of organs organs working working togethertogether

one one individual individual

living thingliving thing

one one individual individual

living thingliving thing

all all organisms organisms

of the same of the same kind living kind living in one areain one area

all all organisms organisms

of the same of the same kind living kind living in one areain one area

all all interacting interacting populations populations

in an in an ecosystemecosystem

all all interacting interacting populations populations

in an in an ecosystemecosystem

all living all living and and

nonliving nonliving things things

interacting interacting within a within a

certain areacertain area

all living all living and and

nonliving nonliving things things

interacting interacting within a within a

certain areacertain area

large region large region with typical with typical plants and plants and

animals animals that that

includes includes several several

ecosystemsecosystems

large region large region with typical with typical plants and plants and

animals animals that that

includes includes several several

ecosystemsecosystems

cell

© 2004 Plano ISD, Plano, TX

1.How do abiotic factors change as the seasons

change?

2.How do biotic components change from summer to

winter?

© 2004 Plano ISD, Plano, TX

EcosystemEcosystemA unit, small or large, that consists A unit, small or large, that consists of biotic factors (plants, animals, of biotic factors (plants, animals,

micro-organisms functioning micro-organisms functioning together with abiotic factors together with abiotic factors (precipitation, sunlight, soil).(precipitation, sunlight, soil).

A unit, small or large, that consists A unit, small or large, that consists of biotic factors (plants, animals, of biotic factors (plants, animals,

micro-organisms functioning micro-organisms functioning together with abiotic factors together with abiotic factors (precipitation, sunlight, soil).(precipitation, sunlight, soil).

© 2004 Plano ISD, Plano, TX

do not necessarily have clear do not necessarily have clear boundariesboundaries due todue to biotic (living)biotic (living) andand

abiotic (non-living)abiotic (non-living) changeschanges

do not necessarily have clear do not necessarily have clear boundariesboundaries due todue to biotic (living)biotic (living) andand

abiotic (non-living)abiotic (non-living) changeschanges

EcosystemsEcosystems

BioticBioticBioticBiotic AbioticAbioticAbioticAbiotic

migration, seed migration, seed dispersaldispersal

migration, seed migration, seed dispersaldispersal

flood, erosion, flood, erosion, droughtdrought

flood, erosion, flood, erosion, droughtdrought

can change daily as things move can change daily as things move from one ecosystem to anotherfrom one ecosystem to another

can change daily as things move can change daily as things move from one ecosystem to anotherfrom one ecosystem to another

© 2004 Plano ISD, Plano, TX

interact with interact with each other in each other in complex wayscomplex ways

interact with interact with each other in each other in complex wayscomplex ways

Biotic Factors :Biotic Factors :

also interact also interact with with abioticabiotic

factors in the factors in the ecosystemecosystem

also interact also interact with with abioticabiotic

factors in the factors in the ecosystemecosystem

Predator Predator Prey andPrey and

competitioncompetition

Predator Predator Prey andPrey and

competitioncompetition

Plants and Plants and animals animals

dependent dependent upon water, upon water,

minerals, minerals, temperature,temperature,

lightlight

Plants and Plants and animals animals

dependent dependent upon water, upon water,

minerals, minerals, temperature,temperature,

lightlight

such assuch as

such assuch as

© 2004 Plano ISD, Plano, TX

1.How does temperature affect your life? (abiotic on biotic)

2. How do predators affect other living systems? (biotic on

biotic)

© 2004 Plano ISD, Plano, TX

Building from smaller to larger, Building from smaller to larger, many ecosystems can be connected many ecosystems can be connected to form anto form an

An Ecoregion is a unit of land or water that contains a definable group of species, natural communities, and environmental conditions. Dallas is a part of the Blackland Prairie ecoregion. You will be studying your ecoregion this year!

Ecoregion.

© 2004 Plano ISD, Plano, TX

There are 10-13 ecoregions in Texas

There are 10-13 ecoregions in Texas

Can you find our Ecoregion? What color?

© 2004 Plano ISD, Plano, TX

Ecoregions together make Ecoregions together make up what??up what??

The difference between “ecoregion” and “biome” is one of scale. Biomes are larger and

include several ecoregions.