1 / 3

LAKE ECOLOGY

LAKE ECOLOGY. Unit 1: Module 2/3 Appendix A – Nitrogen cycle. Main N-cycle transformations. Assimilation. Org-N. NO 2 -. NO 3 -. NH 4 +. Nitrification 1 (oxic bacteria). Nitrification 2. Ammonification. Anammox (anoxic bacteria). N 2. N 2 O. NO 2. gases. Oxidation state. -3.

magda
Download Presentation

LAKE ECOLOGY

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. LAKE ECOLOGY Unit 1: Module 2/3 Appendix A – Nitrogen cycle

  2. Main N-cycle transformations Assimilation Org-N NO2- NO3- NH4+ Nitrification 1 (oxic bacteria) Nitrification 2 Ammonification Anammox (anoxic bacteria) N2 N2O NO2 gases Oxidation state -3 -2 -1 +1 +2 +3 +4 +5 0 Assimilation (algae + bacteria) Assimilation Denitrification Mineralization Denitrification (anoxic bacteria) N2 - Fixation - Soil bacteria - Cyanobacteria - Industrial activity - Sulfur bacteria

  3. Whole lake N-budget Nitrification Tribs, GW, Precip DON, PON, NO3-, NH4+ N2 Ammonia volatilization N2-fixation Assimilation Outflow Algae NO3- NH4+ Denitrification DIN PON DON Mineralization Mixing Sedimentation NO3- oxic anoxic Sedimentation NO2-, N2O NO Nitrification NH4+ Mineralization diffusion Burial Burial Surficial Sediments DeepSediments

More Related