Published

Credit: Ashley N. Bulseco et al

Credit: Ashley N. Bulseco et al

A decade of nutrient enrichment significantly increased rates of oxygen uptake and nitrate reduction in sediment. Surprisingly, the proportion of the dormant microbial population increased (overall composition of the microbial community remained unchanged). This response to a perturbation may reflect the microbial community’s strategy for maintaining diversity in a highly dynamic environment.

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  1. Kearns, PJ et al. 2016. Nutrient enrichment induces dormancy and decreases diversity of active bacteria in salt marsh sediments. Nature Communications. doi: 10.1038/ncomms12881
  2. Koop-Jakobsen, K and AE Giblin. 2010. The effect of increased nitrate loading on nitrate reduction via denitrification and DNRA in salt marsh sediments. Limnol. Oceanogr. doi: 10.4319/lo.2010.55.2.0789
  3. Bulseco AN, Giblin AE, Tucker J, et al. Nitrate addition stimulates microbial decomposition of organic matter in salt marsh sediments. Glob Change Biol. 2019;25:3224–3241. https ://doi.org/10.1111/gcb.14726
  4. Ashley N. Bulseco, Joseph H. Vineis, Anna E. Murphy, Amanda C. Spivak, Anne E. Giblin, Jane Tucker, Jennifer L. Bowen 2020. Metagenomics coupled with biogeochemical rates measurements provide evidence that nitrate addition stimulates respiration in saltmarsh sediments Limnol. Oceanogr.65, 2020, S321–S339 doi: 10.1002/lno.11326
  5. Kearns, P. J., A. N. Bulseco‐McKim, H. Hoyt, J. H. Angell, and J. L. Bowen. 2018. Nutrient enrichment alters salt marsh fungal communities and promotes putative fungal denitrifiers. Microb. Ecol. 77: 358–369. doi:10.1007/s00248-018-1223-z

Contact

Anne Giblin
agiblin@mbl.edu

Posted:  July 15, 2020  

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