Some Observations on the Algae of Llyn Ogwen, North Wales

Some Observations on the Algae of Llyn Ogwen, North Wales

The nutrient conditions in the oligotrophic lake Llyn Ogwen were compared with algal populations over a period of 27 months. Oedogonium suecicum (Wittr.) Hirn and a Mougeotia sp. (sterile) both showed some measure of correlation of their proportions in the net plankton with the level of phosphate. A...

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Veröffentlicht in:The Journal of ecology 1965-07, Vol.53 (2), p.361-370
1. Verfasser: Duthie, H. C.
Format: Artikel
Sprache:eng
Schlagworte:
Algae
Desmids
Ice
Limnology
Nitrates
Phosphates
Phytoplankton
Plankton
Sediments
Silicates
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description The nutrient conditions in the oligotrophic lake Llyn Ogwen were compared with algal populations over a period of 27 months. Oedogonium suecicum (Wittr.) Hirn and a Mougeotia sp. (sterile) both showed some measure of correlation of their proportions in the net plankton with the level of phosphate. A succession of the desmids Hyalotheca mucosa (Mert) Ehr., H. neglecta Racb. and Gymnozyga moniliformis Ehr. could not be correlated with any growth factor. Falling phosphate level was correlated with growth of Dinobryon sertularia Ehr. and a comparison made of the populations on the sediment and in the water. The growth of Tabellaria flocculosa (Roth) Ktz. was correlated with the silicate level and the general nutrient conditions.
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1365-2745
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source Periodicals Index Online; JSTOR Archive Collection A-Z Listing
subjects Algae
Desmids
Ice
Limnology
Nitrates
Phosphates
Phytoplankton
Plankton
Sediments
Silicates
title Some Observations on the Algae of Llyn Ogwen, North Wales
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