Hjem
Ecological and Environmental Change Research Group

Varselmelding

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MSc project

Defining lake reference states

Gaute Velle

Hovedinnhold

Defining reference states for lakes in Norway

  • The ecological quality status of all waters should be assessed according to the EU water framework directory
  • The status classes are defined by their deviation from a reference level
  • The reference, pre-perturbation conditions are often lacking or arbitrarily set
  • Therefore the reference state needs to be defined

Using palaeolimnological methods, especially chironomid analysis, the status of the lake can be traced back in time to give a reference baseline status.

 

Definere referansetilstand for innsjøer i Norge

  • Den økologiske kvaliteten status for alle farvann bør vurderes i henhold til EU water framework directory
  • Status klasser er definert av deres avvik fra en referanse-nivå
  • Referanse, pre-perturbasjons forholdene ofte mangler eller vilkårlig satt
  • Referansetilstand må derfor defineres


Ved hjelp av palaeolimnological metoder, spesielt chironomid analyse, kan statusen til insjø føres tilbake i tid for å gi et referansetilstand.