| Summary: | A survey of Lough Gur, a 76 ha lowland lake in Co, Limerick, was carried out between December 1988 and October 1989. The lake is a hardwater, eutrophic system with consistently elevated levels of total phosphorus. Large algal crops were produced in spring, dominated by the diatom Asterionella formosa Hass. and in the autumn, dominated by Chlamydomonas - type biflagellates. A large crop of the floating macrophyte, Ceratophyllum demersum L., persisted throughout the year. Asellus and Chironomid larvae were the principal invertbrates recorded. The fish stock was dominated by rudd, Scardinius erythrophthalmus L. In addition pike, Esox lucius L. and eel, Anguilla anguilla (L.) were encountered.
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