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María De Miguel
Jon Redondo
 Bai, gaur egun natura egoera latzetan
aurkitzen da. Orain dala zenbait urte,
espezie desberdinak desagertzen hasi
ziran eta prozesu bera gertatzen jarraitu
da orain arte. Izan ere, aldatu dan gauza
animalien desagerpena eragiten dauana
da. Gizakiok gertaera honeen erru nagusia
dabe.
 Espezie bat iraungi egingo da espezie
horretako azken kidea hiltzean.
 Kide gutxi gelditzean eta ugaltzea
ezinezkotzat ematean ere esan daiteke
espezie hori iraungia dagoela.
 Sinpleena ugaltzeko
ezintasuna edo beste
habitat batetara aldatu
ezina litzateke. Espezien
iraungipenaren beste
kausa nabarmenena
gizakiaren esku-hartzea
da. Horien adibide dira:
ehiza, kutsadura,
habitaten deuseztapena
etab.
Kausak
Deforestazioa
Ehiza
Habitaten
Deusestapena
Kutsadura
? ?
? ?
•Sinpleena ugaltzeko ezintasuna edo beste habitat batetara aldatu ezina
litzateke.
•Espezien iraungipenaren beste kausa nabarmenena gizakiaren esku-hartzea
da.
•Gizakiek eragindako kausa nagusiak:
EHIZA ANIMALIEN
DEUSEZTAPENAK
KUTSADURA
 Berotze globala
 Habitaten degradazioa
 Kutsadura genetikoa
 Fenomeno demografiko eta genetikoak
 Bizitzeko baldintzak aldatzera eraman dezake habitaten
degradazioak, honela espezieek bizirauteko arazoak dituzte.
 Eremua biziezina bihurtzea edo lehengaien murrizketa dira
honen eragin nabarienak.
 Populazioaren genetika eta fenomeno demografikoek
eboluzioari eragiten diote, ondorioz espezie baten
desagerpenari ere.
Aldakortasuna OndoretasunaEgokitzapena
 Historikoki eta naturalki
gune batean hazi diren
espezieak kutsadura
genetikoaz mehatxatuta
egon daitezke kanpotik
sartutako beste espezie
batez aldea atera
baitzezakeen lehenengoa
homogeneizatu bada.
 Lurrazaleko, aireko eta ozeanoetako batez
besteko tenperaturaren igoera da berotze globala, azken
hamarkadetan eta bere aurreikusitako jarraipena.
Animali desagerpena
Animali desagerpena

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Animali desagerpena

  • 2.  Bai, gaur egun natura egoera latzetan aurkitzen da. Orain dala zenbait urte, espezie desberdinak desagertzen hasi ziran eta prozesu bera gertatzen jarraitu da orain arte. Izan ere, aldatu dan gauza animalien desagerpena eragiten dauana da. Gizakiok gertaera honeen erru nagusia dabe.
  • 3.  Espezie bat iraungi egingo da espezie horretako azken kidea hiltzean.  Kide gutxi gelditzean eta ugaltzea ezinezkotzat ematean ere esan daiteke espezie hori iraungia dagoela.
  • 4.  Sinpleena ugaltzeko ezintasuna edo beste habitat batetara aldatu ezina litzateke. Espezien iraungipenaren beste kausa nabarmenena gizakiaren esku-hartzea da. Horien adibide dira: ehiza, kutsadura, habitaten deuseztapena etab. Kausak Deforestazioa Ehiza Habitaten Deusestapena Kutsadura ? ? ? ?
  • 5. •Sinpleena ugaltzeko ezintasuna edo beste habitat batetara aldatu ezina litzateke. •Espezien iraungipenaren beste kausa nabarmenena gizakiaren esku-hartzea da. •Gizakiek eragindako kausa nagusiak: EHIZA ANIMALIEN DEUSEZTAPENAK KUTSADURA
  • 6.  Berotze globala  Habitaten degradazioa  Kutsadura genetikoa  Fenomeno demografiko eta genetikoak
  • 7.  Bizitzeko baldintzak aldatzera eraman dezake habitaten degradazioak, honela espezieek bizirauteko arazoak dituzte.  Eremua biziezina bihurtzea edo lehengaien murrizketa dira honen eragin nabarienak.
  • 8.  Populazioaren genetika eta fenomeno demografikoek eboluzioari eragiten diote, ondorioz espezie baten desagerpenari ere. Aldakortasuna OndoretasunaEgokitzapena
  • 9.  Historikoki eta naturalki gune batean hazi diren espezieak kutsadura genetikoaz mehatxatuta egon daitezke kanpotik sartutako beste espezie batez aldea atera baitzezakeen lehenengoa homogeneizatu bada.
  • 10.  Lurrazaleko, aireko eta ozeanoetako batez besteko tenperaturaren igoera da berotze globala, azken hamarkadetan eta bere aurreikusitako jarraipena.