ISSN:
1573-0417
Schlagwort(e):
Rhizosolenia
;
paleoecology
;
diatoms
;
acidification
Quelle:
Springer Online Journal Archives 1860-2000
Thema:
Biologie
,
Geologie und Paläontologie
Notizen:
Abstract The detection of the freshwater genus Rhizosolenia (Bacillariophyceae) remains in sediments is affected by the oxidants used in the digestion procedures. The Rhizosolenia counts decrease from 30% H2O2〉50% HNO3〉50% chromic acid〉100% HNO3〉100% H2SO4. Rhizosolenia is mostly found in Ontario lakes with summer average pH ranging from 5.6 to 8.3, Gran alkalinity from 0.2 to 120 mg L−1 as CaCO3 and water colour from 4 to 105 Hazen units. Large Rhizosolenia populations are generally found in clear lakes, neutral pH and low alkalinity.
Materialart:
Digitale Medien
URL:
http://dx.doi.org/10.1007/BF00202194
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