AWI Sylt Outdoor Mesocosms (AWISOM)

The AWI Sylt Outdoor Mesocosms (AWISOM) consists of 24 identical mesocosms, each with 1800 l sea water volume and a light-permeable cover. Each mesocosm can simulate tides and currents to recreate conditions as natural as possible for the experimental communities contained within. Furthermore, it is possible to precisely regulate temperature, carbon dioxide concentration and nutrients within each basin. A multiparameter Sonde probe continuously monitors and automatically records pH, salinity, oxygen content and temperature. The mesocosms are operated seasonally from April to October to study the influences of simulated environmental changes (IPCC climate scenarios) on species communities of the Wadden Sea. In winter, AWISOM is shut down to to protect the electronics and technology from cold-related damage. However, in addition to the 24 outdoor tanks, there are six further tanks in a large greenhouse, where it is possible to conduct experiments in winter e.g. to study the effects of warmer winters.

Instructions for work at the mesocosms

In order to work at the mesocosms, it is imperative that all persons (PIs, senior scientists, postdocs and student assistants, etc.) familiarise themselves with the operation of the facility in advance of the experiments (see operating instructions). This also includes all electrical equipment (e.g., pumps, laptops, measuring devices) and cleaning equipment (Kärcher) that will be used before, during and after the experiments. The mesocosms may only be used after instruction. The use of station-internal equipment and consumables must always be agreed with the responsible AWI scientist or the respective technician.

Occupational safety

Appropriate clothing and sturdy footwear must be worn when working on the entire mesocosm facility and in the entire building. Furthermore, eating and drinking are not permitted in the laboratories. The workplaces in the guest research laboratory and all communal facilities (scullery, freezer rooms) must be kept in a tidy condition. 

Animal welfare

Animal welfare must be guaranteed during the entire mesosome campaign. For decapods and fish, an animal experiment licence must be obtained before the start of the mesocosm campaign.

Contact person

Dr. Lisa Shama
+49 4651 956 4201
+49 4651 956 200

Publications

  • Moreno HD, Köring M, Di Pane J, Tremblay N, Wiltshire KH, Boersma M and Meunier CL (2022). An integrated multiple driver mesocosm experiment reveals the effect of global change on planktonic food web structure. Communications Biology. DOI: 10.1038/s42003-022-03105-5
  • Fuxjager L, Wanzenböck S, Ringler E, Wegner KM, Ahnelt H and Shama LNS (2019) Within-generation and transgenerational plasticity of mate choice in oceanic stickleback under climate change. Philosophical Transactions of the Royal Society 374: 20180183. doi.org/10.1098/rstb.2018.0183
  • Pansch A, Winde V, Asmus R and Asmus H (2016) Tidal benthic mesocosms simulating future climate change scenarios in the field of marine ecology. Limnology and Oceanography: Methods. doi: 10.1002/lom3.10086