t2 2 3 Ecology2 Day 2 3 Succession

8/20/2019 t2 2 3 Ecology2 Day 2 3 Succession

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REVIEW

1. Where does this system

get its energy from?

2. List the producers, primary

consumers, and secondaryconsumers.

3. Where does the largest

amount of energy exist?

4. Where does the leastamount of energy exist?


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OB!"#$%!&

"O'#!'#(

1. )!*$'! &uccession.

2. "ompare+"ontrast rimary and &econdary

succession.

3. !-L$' /hat ioneer organisms are and /hythey are so important.

4. )!&"0$B! the process of ond succession.


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"hanges in !cosystems(

!cological &uccession


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)efinition(

#he gradual change in an ecosystem

caused y the replacement of one

community y another until a stale climax

community is estalished.


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"hange in animals depends on the change in

plantlife.

Long term gradual change in ecosystems

occurs ecause oer time one species /ill

replace another.

Long Term Change


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http://www.ux1.eiu.edu


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WHAT CAUE UCCEI!"#

&ometimes the enironment changes aruptly 5 rapidly. )ue to 6uman $nterference 7clearing land for farming,

stores, homes, etc89

)ue to 'atural disasters(

− *orest fires− %olcanoes

− &torms

!cosystems /ill /or: to restore themseles ac: to a

&tale or &teady &tate.

"an e 0$;0< or &!"O')0


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$ T%&E !' LA"( UCCEI!"

rimary succession the deelopment of plant

communities on ne/ly formed haitats that)O'=# 6%! &O$L 7!x8a laa flo/9

&econdary succession return of an area to its

natural egetation follo/ing a disruption orremoal of the original climax community /here

O'L< &O$L $& L!*#. 7!x8*orest fire9


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&ioneer pe)ie*

#he first organisms to inhait a gienlocation 7!x8lichens on are roc:9

ioneer organisms modify their enironment,thus estalishing conditions under /hich

more adanced organisms can lie.


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L http://+otit.+otan,.wi*).edu

http://www.*aguaro-uniper.)om/

L$"6!'&( alga 5 fungi in

;utualistic relationship


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rimary &uccession

&oil starts to form as lichens 7pioneer

species9, /eather, and erosion rea:

do/n roc:s into smaller pieces.

When lichens die, they decompose,

adding small amounts of organic matter

7nutrients9 to ma:e soil.


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0$;0< &>""!&&$O'


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rimary &uccession

#he simple plants die, adding more

organic material

#he soil layer thic:ens, and grasses,

/ildflo/ers, and other plants egin to ta:e

oer

http://www.)wr.utexa*.edu


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rimary &uccession

#hese plants die, and they add more

nutrients to the soil

&hrus and trees can surie no/

http://www.rowan.edu


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rimary &uccession

$nsects, small irds, and mammals hae

egun to moe in

What /as once are roc: no/ supports a

ariety of life

http://p$-raw.greenpea)e.org


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&econdary &uccession

Begins in a place that already has soil and

/as once the home of liing organisms

Occurs faster and has different pioneer

species than primary succession

!xample( after forest fires


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&!"O')0< &>""!&&$O'


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Cimax Communit, mature community in /hich populations remain

stale and may not undergo further successionunless there is another disturance.

)oes not al/ays mean ig trees

@rasses in prairies "acti in deserts


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ond &uccession

6o/ does a pond eentually ecome

a forest????


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1. ediment0 aen ea2e* and de+ri* ainto the a3e and a))umuate on the+ottom.

$. The water depth 3eep* de)rea*ing.

4. 5o** and rooted pant* grow aroundthe edge* o the *haow a3e.

6. The a3e )ontinue* to i in and+e)ome* ri)h with nutrient*.

7. La3e +e)ome* a mar*h.

8. 5ar*h +e)ome* dr, and.


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9. Land )ommunit, repa)e* the auati))ommunit, through *e)ondar, and*u))e**ion.

;. !2er time0 the a3e wi +e)ome aore*t.


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t2 2 3 Ecology2 Day 2 3 Succession