The controls on phosphorus availability in a Boreal lake ecosystem since deglaciation

0360220 - BC 2012 RIV NL eng J - Článek v odborném periodiku
Norton, S. A. - Perry, R.H. - Saros, J.E. - Jacobson Jr, G.L. - Fernandez, I.J. - Kopáček, Jiří - Wilson, T.A. - SanClements, M.D.
The controls on phosphorus availability in a Boreal lake ecosystem since deglaciation.
Journal of Paleolimnology. Roč. 46, č. 1 (2011), s. 107-122. ISSN 0921-2728. E-ISSN 1573-0417
Výzkumný záměr: CEZ:AV0Z60170517
Klíčová slova: oligotrophication * climate change * phosphorus * sediment * aluminum
Kód oboru RIV: DA - Hydrologie a limnologie
Impakt faktor: 1.898, rok: 2011

The sediment record from a 5.3-m core from Sargent Mountain Pond, Maine USA indicates strong co-evolutionary relationships among climate, vegetation, soil development, runoff chemistry, lake processes, diatom community, and water and sediment chemistry. The lake was transformed from a more productive, high P, high pH, low DOC system into an oligotrophic, relatively low P, acidic, humic lake over a period of 16,600 years, a natural trend that continues. In contrast to many human-affected lakes that become increasingly eutrophic, many lakes become more oligotrophic during their history. The precursors for that are: (1) absence of human land-use in watersheds, (2) bedrock lithology and soil with a paucity of soluble Ca-rich minerals, and (3) vegetation that promotes the accumulation of soil organic matter, podzolization, and increased export of metal-DOC complexes, particularly Al.
Trvalý link: http://hdl.handle.net/11104/0197822