1 / 19

Limnology, ecosystems in fresh water

Limnology, ecosystems in fresh water. The lake is devided in three categories. Lakes Oligotrophic lakes Eutrophic lakes Dystrophic lakes. Lack of nourishment Clear water Lack of plancton Deep sight dept. Indicatorspecies:. Oligotrophic lakes. - Notblomster. - Säv.

amber-trujillo
Download Presentation

Limnology, ecosystems in fresh water

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Limnology, ecosystems in fresh water

  2. The lake is devided in three categories • Lakes • Oligotrophic lakes • Eutrophic lakes • Dystrophic lakes

  3. Lack of nourishment Clear water Lack of plancton Deep sight dept Indicatorspecies: Oligotrophic lakes - Notblomster - Säv - Lom (gaviiformes)

  4. Well nurished Rich birdlife Rich vegetation A lot of plancton Short sight depht Indicatorspecies: Eutrophic lakes • Andmat - Gul Svärdslilja - Blomvass

  5. Lack of nurisment Brownnish Small lakes in the forest Short sigh depht Full of soilpartcles Indictorspecies: Dystrophic lakes -Sphagnum

  6. The zones of the lake Lemnides Plants flowing on the watersurface Plants with long shoots Elodeider Plants over watersurface Helophyt The Pelagial Plants on the watersurface Nymphaedies Plants with short shoots Isoetides The Littoral Mosses Algaes The Profundal

  7. The varies of the year • The stagnation in the winter

  8. The varies of the year • The circulation in the spring

  9. The varies of the year • The stagnation in the summer Epilimnion Språngskikt = metalimnion Hypolimnion

  10. The varies of the year • The circulation in the autumn

  11. Dahnie sp. Hinnkräfta Planctonspecies

  12. Planctonspecies • Polyphemus sp. Hinnkräfta

  13. Species in the bottom • A larva of a musquito (Chirnomid)

  14. Phytoplancton • Greenalgae

  15. Phytoplankton • Diatomeae

  16. Planctonspecies Planctonspecies

  17. Djurplankton (zooplankton) • Hjuldjur (rotatorier)

  18. Fishes • Perch

  19. Fishes • Pike

More Related