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OVERPOPULATION &COMPETITION

DO NOW:

When diferent organisms tr too!!"# the same ni!he$ %hat is the

o"t!ome

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O'(ECTIVE)•

CONTENT: – DE)CRI'E ho% o*er#o#"+ation +eads to

!om#etition,

 – DE-INE Carring !a#a!it and E.PLAIN %hat

ha##ens %hen it is rea!hed/e0!eeded,

 – DE-INE +imiting 1a!tor and gi*e three e0am#+es,

• LAN2UA2E:

 – Use ne%+ +earned !ontent *o!a3"+ar toe0#+ain %hat ha##ens %hen a #o#"+ationrea!hes or e0!eeds the !arring !a#a!it,

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Overpopulation !a"ses reso"r!es to 3e+imited,

Competition %i++ o!!"r among

organisms,,,One organism %i++ o"t!om#eteanother 4+oser dies or mo*es5,

W6AT 6APPEN) W6EN T6ERE ARE TOO MAN7 OR2ANI)M) IN ONE

NIC6E

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Po#"+ations %ith too man organisms %i++e0!eed the Carrying Capacity.

 The CARRYING CAPACITY  is the amo"nt

o1 organisms that !an s"r*i*e in ane!osstem 3ased on the reso"r!esa*ai+a3+e,

 –

E.AMPLE:• In o"r 3a!8ard$ there are on+ eno"gh reso"r!es

41ood$ %ater$ she+ter/s#a!e5 1or 9 s;"irre+s tos"r*i*e, I1 MORE s;"irre+s !ome into the ard$

COMPETITION %i++ o!!"r,

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6OW ARE POPULATIONLEVEL) CONTROLLED

Po#"+ations are !ontro++ed 3 LimitingFactor.

LIMITING FACTOR! are 1a!tors in the

en*ironment that !ontro+ a #o#"+ation

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m t ng a!tors t at a e!tthe #o#"+ation si=e o1

organisms

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9, Carring Ca#a!it is e0!eeded,, Organisms die$ #o#"+ation de!reases,>, Reso"r!es in!rease$ #o#"+ation in!reases,?, )tarts a++ o*er again at 9,@This res"+ts in a cyclic c#ange o*er time,

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