Trends and abundance Limit Reference Level for isolated populations - - PowerPoint PPT Presentation

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Sep 02, 2023 236 likes •296 views

Trends and abundance Limit Reference Level for isolated populations is 10000 LRL for connected sub-populations is 10000 GES for trend under exponential growth is 7% for ringed seals and grey seals, and 9% for harbour seals At carrying

SLIDE 1

Trends and abundance

Limit Reference Level for isolated populations is 10000 LRL for connected sub-populations is 10000 GES for trend under exponential growth is 7% for ringed seals and grey seals, and 9% for harbour seals At carrying capacity: Decline less than 10% over a 10-year period

SLIDE 2

Evaluation units

Grey seal one evaluation unit
Ringed seal two units
Harbour seals several ecological units
Should be treated as a metapopulation regarding abundance

SLIDE 3

Transition phase

Grey seals: 5.1%
Harbour seals Kattegat 7.2%

SLIDE 4

Distribution

SLIDE 5

Study reservation Trends and Abundance

Danish comment; The LRL (10000) will never be achieved in Denmark.

Foto: Stockholm Vatten

The 10 000 is only for isolated

populations. Danish population