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Ornitogen jord

Jord med mye organisk materiale rik på karbon, nitrogen og fosfor som stammer fra avfall fra store kolonier av havfugl, som alkekonge. Avfallet er møkk, fjær, eggeskall og døde fugl som fører til dannelsen av ornitogene jordarter. I Antarktis kan ornitogen jord også stamme fra pingvinkolonier. Det næringsrike avfallet gir gode levevilkår for andre organismer, og ofte ser en tydelig hvordan vegetasjonen er grønnere under fuglekoloniene.

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