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Personal profile

Biography

Research

My research focusses on biogeochemistry, or how nutrients such as carbon, oxygen, nitrogen and iron are moved through, and interact with the environment. This is a highly inderisciplanary field of research, with aspects of environmental science, chemistry, biology, engineering and computational modelling. In particular, I have three major interests:

1. Fermentation in coastal sands

We have recently discovered that when oxygen is not available, microbial communities in coastal sands tend to use fermentation as their major metabolism. Here we are investigation the implications of this effect, such as reducing the ability of coral reefs to withstand ocean acidifcation.

2. The balance between nitrogen removal and nitrogen recycling

In this project we are investigating what chemical, biological and physical factors control the fate of nitrogen, especially in estuaries. 

3. Response of irrigating fauna to hypoxia

Both the behaviour of burrowing animals (e.g. worms) and the chemical reactions that happen in sediments are to a large part controlled by oxygen availability, and burrowing in itself affects the transport of oxygen into the sediment. This project is investigating the interplay between these factors.

 

Teaching

I am currently teaching in the following units in the School of Earth, Atmosphere & Environment.

  • EAE3342 Environmental cycles on our living planet
  • EAE2322 Environmental earth sciences

 

Research area keywords

  • Biogeochemistry
  • Environmental Geochemistry
  • Water Quality
  • Nitrogen Cycling
  • Estuaries
  • Sandy sediments

Network Recent external collaboration on country level. Dive into details by clicking on the dots.

Research Output

Bacterial fermentation and respiration processes are uncoupled in anoxic permeable sediments

Kessler, A. J., Chen, Y-J., Waite, D. W., Hutchinson, T. F., Koh, S., Popa, M. E., Beardall, J., Hugenholtz, P., Cook, P. & Greening, C. A., 11 Mar 2019, In : Nature Microbiology. 4, 6, p. 1014–1023 10 p.

Research output: Contribution to journalArticleResearchpeer-review

Open Access
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9 Citations (Scopus)

Cable bacteria promote DNRA through iron sulfide dissolution

Kessler, A. J., Wawryk, M., Marzocchi, U., Roberts, K. L., Wong, W. W., Risgaard-Petersen, N., Meysman, F. J. R., Glud, R. N. & Cook, P. L. M., 1 May 2019, In : Limnology and Oceanography. 64, 3, p. 1228-1238 11 p.

Research output: Contribution to journalArticleResearchpeer-review

4 Citations (Scopus)

Effect of temperature and drying-rewetting of sediments on the partitioning between denitrification and DNRA in constructed urban stormwater wetlands

Rahman, M., Grace, M. R., Roberts, K. L., Kessler, A. J. & Cook, P. L. M., Dec 2019, In : Ecological Engineering. 140, 10 p., 105586.

Research output: Contribution to journalArticleResearchpeer-review

1 Citation (Scopus)

Role of organic carbon, nitrate and ferrous iron on the partitioning between denitrification and DNRA in constructed stormwater urban wetlands

Rahman, M. M., Roberts, K. L., Grace, M. R., Kessler, A. J. & Cook, P. L. M., 20 May 2019, In : Science of the Total Environment. 666, p. 608-617 10 p.

Research output: Contribution to journalArticleResearchpeer-review

8 Citations (Scopus)

Biogeochemical controls on the relative importance of denitrification and dissimilatory nitrate reduction to ammonium in estuaries

Kessler, A. J., Roberts, K. L., Bissett, A. & Cook, P. L. M., 1 Jul 2018, In : Global Biogeochemical Cycles. 32, 7, p. 1045-1057 13 p.

Research output: Contribution to journalArticleResearchpeer-review

13 Citations (Scopus)

Prizes

Interdisciplinary Seed Fund 2018, Faculty of Engineering-IT-Science, Monash University

Adyel, Tanveer (Recipient), Kessler, Adam (Recipient) & Zahraa Said Emam Ammar Abdallah (Recipient), 2018

Prize: Prize (including medals and awards)