Articles | Volume 14, issue 17
Biogeosciences, 14, 3979–3994, 2017
https://doi.org/10.5194/bg-14-3979-2017
Biogeosciences, 14, 3979–3994, 2017
https://doi.org/10.5194/bg-14-3979-2017
Research article
14 Sep 2017
Research article | 14 Sep 2017

Interplay of community dynamics, temperature, and productivity on the hydrogen isotope signatures of lipid biomarkers

S. Nemiah Ladd et al.

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Short summary
Hydrogen isotopes of lipids provide valuable information about microbial activity, climate, and environmental stress. We show that heavy hydrogen in fatty acids declines from spring to summer in a nutrient-rich and a nutrient-poor lake and that the effect is nearly 3 times as big in the former. This effect is likely a combination of increased biomass from algae, warmer temperatures, and higher algal growth rates.
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