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Samenvatting Hoorcollege 6 deeltoets 1 the oceans invinsible forest mariene wetenschappen 1

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Hoorcollege 6 deeltoets 1 the oceans invinsible forest mariene wetenschappen 1

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Mariene biologie HC6 – The oceans invincible forest – 17-2-2020

All photosynthesis = primary production
- Uitgedrukt in g C/m2/jaar
- Vooral door phytoplankton
- Op land is dit 50 x 10^15 gram C/jaar
- In oceanen wordt met 1% van de biomassa op het land even veel productiviteit bereikt, dit
komt door snelle reproductie van Phytoplankton

Phytoplankton basics
- Phyto & Zoo-plankton = organismen die drijven in de oceanen
- Phyto = plant-achtig organisme
- Zoo = vooral invertebraten
- Phytoplankton: cyanobacteriën, diatoms, dinoflagellates, coccolithophorides
basics
- Wereldwijde oceanische primaire productie = land primaire productie
- Fosfor & stikstof & licht belangrijk voor primaire productie van oceanen
- Phytoplankton vooral aanwezig langs kusten, bovenste deel van oceanen en plekken met
upwelling
- Phytoplankton is de eerste link in het oceanische voedselweb

Koraal
- Kan met weinig nutriënten overleven  komt door aanwezigheid van symbionten die
voedingsstoffen leveren
Ehux
- Modelorganisme, want grote hoeveelheden in oceanen

Physical factors influencing marine life
- Light
- Temperatuur
- Opgeloste nutriënten
- Zoutheid
- Opgeloste gassen
- Zuur-base balans
- Hydrostatic pressure

Photic zone
- Bovenste laag water waar licht doorkomt
- Alleen hier is fotosynthese mogelijk
- Dikte van de fotosynthetische zone licht aan het aantal opgeloste stoffen vaak <200m

Different zones
- Euphotic – 70 m  FS & licht
- Disphotic – 600 m  alleen zicht
- Aphotic – below 600 mv pik donker
- Light penetration kijk powerpoint

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Samenvattingen Studie Biologie Universiteit Utrecht

Ik bied samenvattingen aan van verschillende vakken van de studie Biologie aan de Universiteit Utrecht

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