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It is not all the same: Responses of heterotrophic microbes to warming and dissolved organic carbon sources in two tropical coastal systems

Research output: Contribution to conferenceConference abstract for conferenceResearch

  • Christian Lønborg
  • Federico Baltar, Universitat Wien, Austria
  • Maria Ll Calleja, King Abdullah University of Science and Technology (KAUST), Saudi Arabia
  • Xose Anxelu G. Moran, King Abdullah University of Science and Technology, Instituto Espanol de Oceanografia, Spain
In polar and temperate coastal waters, temperature is a key variable controlling biogeochemical processes. In contrast, in tropical coastal waters where temperatures are already naturally elevated it is still uncertain whether temperature is a major controlling factor. While some studies suggest that in tropical coastal waters, biogeochemical processes are already operating close to their optima, others suggest the contrary.
In this presentation, we will present results from two identical experiments conducted in the tropical coastal waters of the Great Barrier Reef and Red Sea with the aim to investigate how warming and organic matter substrates (seawater, mangrove and seagrass-derived) affected microbial organic carbon processing. Our results suggest that one model does not fit all, with contrasting impacts of temperature and organic matter in these two coastal systems. One notable example is that warming and the addition of mangrove derived organic matter in the Great Barrier Reef had marked impacts on the microbial organic carbon processing, while in the Red Sea the effects were minor. This suggests that system differences might determine whether/how warming affects biogeochemical processes in tropical coastal waters.
Original languageEnglish
Publication year2021
Publication statusPublished - 2021
EventASLO 2021 Aquatic Sciences Meeting - Virtual Meeting
Duration: 22 Jun 202127 Jun 2021


ConferenceASLO 2021 Aquatic Sciences Meeting
LocationVirtual Meeting
Internet address

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