Positive and negative effects of allochthonous dissolved organic matter and inorganic nutrients on phytoplankton growth
By Jennifer L. Klug. 2002
98 citations recorded by the source corpus.
Dissolved organic matter (DOM) can have both positive and negative effects on phytoplankton growth. The magnitude of these effects may vary depending on the source of DOM and the composition of the phytoplankton community. Here, I address the relative importance of the positive and negative effects of DOM extracts on phytoplankton growth. In short-term experiments with phytoplankton from West Long Lake, a small, moderately coloured lake in northern Michigan, U.S.A., the net effect of doubling ambient DOM on phytoplankton growth was positive. Increasing DOM concentrations from ~10 mg C·L1 to ~20 mg C·L1 had a negative effect on total phytoplankton growth by reducing irradiance and thus reducing the depth to which growth was positive. However, inorganic nutrients in the DOM extracts increased growth at each irradiance level. The positive effect on phytoplankton growth owing to the nutrients associated with DOM was greater than the negative effect caused by shading. Although the positive effects of allocht...
Subfields: Environmental Chemistry, Nature and Landscape Conservation, Oceanography
View Paper: https://www.semanticscholar.org/paper/768d437157d3848a437fd6ba4b6435c1fca30014
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In Environmental Chemistry
In Nature and Landscape Conservation
In Oceanography
Citations in the corpus
- The microbial aspect of climate change (2016, background): “This is likely to favor heterotrophy instead of autotrophy because phytoplankton growth would be restricted due to poor light conditions occurring because of higher concentrations of brown organic matter (Jones 1992; Klug 2002; Andreasson et al. 2004; Eriksson et al. 2010).”