Summary
A study was made of the Actinomycetes occurring in aquatic environments of the English Lake District. Lake water often contained few Actinomycetes; but the number recovered seemed to show a correlation with the total ionic concentration of the water. Stream and river water was more productive and one group, the Actinoplanaceae, was especially prominent. Mild chemical pollution by farmyard washings did not discourage the Actinoplanaceae of streams, on the contrary more were produced under these conditions. The bottom mud of lakes yielded many Actinomycetes, Micromonospora and Streptomycetes being predominant. Nocardia-type, Lspi and Sspi were three forms, apparently previously undescribed, which were encountered in this investigation. Nocardia-type appears to be a soil organism which is washed into the aquatic environment. Lspi was numerous in lake water and mud and seems to be a truly aquatic form. The evidence for Sspi is indecisive.
Zusammenfassung
Die Actinomycetes wurden in wässerichen Umgebungen im Englischen Seengebiet studiert. Seewasser enthält oft einige Actinomycetes; aber die enthaltene Zahl ist von der totalen Ion Konzentration abhängig. Bach- und Fluβwasser erzeugte mehr, und eine Gruppe, die Actinoplanaceae, war besonders zahlreich. Milde chemische Verunreinigungen bei landwirtschaftlichen Waschungen verhindern die Actinoplanaceae von Flüssen nicht, im Gegenteil, viele wurden unter diesen Zuständen erzeugt. Der Grundschlamm von Seen enthält viele Actinomycetes, Micromonospora und Streptomycetes waren vorherrschend. Nocardia-type, Lspi und Sspi waren drei Arten, scheinbar früher unbeschrieben, welche in dieser Untersuchung gebräuchlich waren. Nocardia-type scheint organische Erde zu sein welche in den wasserichen Umgebungen gewaschen wird. Lspi war in Seewasser und Schlamm zahlreich und scheint eine wahre wasserliche Art zu sein. Der Beweis für Sspi ist unentscheidend.
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Willoughby, L.G. A Study of the Aquatic Actinomycetes of Blelham Tarn. Hydrobiologia 34, 465–483 (1969). https://doi.org/10.1007/BF00045404
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DOI: https://doi.org/10.1007/BF00045404