Dystrophic lake

Dystrophic lake

Dystrophic lake refers to lakes with brown- or tea-coloured waters, the colour being the result of high concentrations of humic substances and organic acids suspended in the water. Because the term has long been misused in the literature, these lakes are better referred to as humic lakes. Although dystrophic lakes are often considered acid, and nutrient-poor (oligotrophic), these lakes actually vary greatly in terms of both pH and productivity. [Hansen, K. 1959. The terms Gyttja and Dy. Hydrobiologia: 309-315.] [Hansen, K. 1962. The dystrophic lake type. Hydrobiologia 19: 183-191] They are common in the taiga of North America and Eurasia.


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  • dystrophic — [dis träf′ik, distrō′fik] adj. 1. of or caused by dystrophy 2. of a lake or pond derived from a bog and characterized by brown, humic matter, high acidity, and poorly developed fauna and flora …   English World dictionary

  • dystrophic — adjective Date: 1893 1. a. relating to or caused by faulty nutrition b. relating to or affected with a dystrophy < a dystrophic patient > 2. of a lake brownish with much dissolved humic matter, a sparse bottom fauna, and a high oxygen consumpt …   New Collegiate Dictionary

  • dystrophic — 1) a type of lake in cold climates with low productivity, limited photosynthesis, scarce phytoplankton, carbon dioxide high and with hypolimnion oxygen depleted. Calcium, phosphorous and nitrogen scanty. Basin deep to shallow, found in boggy… …   Dictionary of ichthyology

  • dystrophic — adj. [Gr. dys, bad; trophein, to nourish] 1. Defective nourishment. 2. A lake high in undecomposed organic matter …   Dictionary of invertebrate zoology

  • dystrophic — /di strof ik, stroh fik/, adj. 1. Med. pertaining to or caused by dystrophy. 2. Ecol. (of a lake) having too low an accumulation of dissolved nutrients to support abundant plant life; having highly acid, brownish waters filled with undecayed… …   Universalium

  • dystrophic — dys•troph•ic [[t]dɪˈstrɒf ɪk, ˈstroʊ fɪk[/t]] adj. 1) pat pertaining to or caused by dystrophy 2) ecl (of a lake or pond) having brownish acidic water productive of vegetation along the shoreline and in shallow parts but poor in aquatic life •… …   From formal English to slang

  • dystrophic — dəs, (ˈ)dis+ adjective 1. : relating to or caused by faulty or imperfect nutrition 2. of a lake : brownish in color with much dissolved humic matter, a small bottom fauna, and a notably high oxygen consumption compare eutrophic, oligotrophic …   Useful english dictionary

  • Einar Naumann — Einar Christian Leonard Naumann (13 August, 1891 ndash; 1934) was an assistant professor of botany and limnology at the University of Lund. Naumann worked during the summers at the Fishery Station in Aneboda (Småland, Southern Sweden), where he… …   Wikipedia

  • Humic acid — is one of the major components of humic substances [http://www.ihss.gatech.edu/whatarehs.html] which are dark brown and major constituents of soil organic matter humus that contributes to soil chemical and physical quality and are also precursors …   Wikipedia

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