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Changes in sediment nutrient content in a subarctic lake subjected to lake fertilization
Author(s) -
BJÖRKRAMBERG SUSANNA
Publication year - 1984
Publication title -
freshwater biology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.297
H-Index - 156
eISSN - 1365-2427
pISSN - 0046-5070
DOI - 10.1111/j.1365-2427.1984.tb00029.x
Subject(s) - subarctic climate , epilimnion , nutrient , sediment , environmental science , phosphorus , human fertilization , hydrology (agriculture) , ecology , agronomy , eutrophication , geology , biology , chemistry , hypolimnion , paleontology , geotechnical engineering , organic chemistry
SUMMARY. 1. Phosphorus and nitrogen concentration in the surface sediment was analysed before, during and after fertilization of a small, stratified, subarctic lake. During stratification most (70%) of the added nutrients were deposited in the epilimnion sediment. 2. After 2 years of fertilization there was a significant increase of both nutrients at all water depths, although values were 30–50% higher per square metre in the shallow areas. 3. Nutrient budget calculations based on the sediment analyses showed that 75% of the added phosphorus and 45% of the nitrogen were accumulated in the sediment after fertilization.