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Sediment indicators of meromixis: comparison of laminations, diatoms, and sediment chemistry in Brownie Lake, Minneapolis, USA (1996)

Tracey, B. ; Lee, N. ; Card, V.

Springer

Journal of paleolimnology 15 (1996), S. 129-132

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ISSN: 1573-0417

Keywords: meromixis ; diatoms ; laminations ; varves

Source: Springer Online Journal Archives 1860-2000

Topics: Biology , Geosciences

Notes: Abstract Meromixis has several powerful effects on lakes, yet there is no single definitive sediment indicator of meromixis. In this study three sediment indicators of meromixis were compared in Brownie Lake, Minneapolis, Minnesota, a small eutrophic lake that became meromictic around 1925. The results show that in Brownie the onset of laminations and changes in the iron to manganese ratio most likely occurred before the development of permanently anoxic bottom water and that changes in the diatom assemblage occurred later, most likely only when meromixis was well developed.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1007/BF00196776

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