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Insights into Bioluminescence Monitoring Using Advanced Lander Technology

This document outlines the operational principles of an advanced lander designed to monitor bioluminescence in ocean environments. With a mission duration ranging from 8 hours to 12 months, the lander can collect data during free fall, utilizing acoustic commands for activation and ballast release for ascent. Key features include CTD profiling, camera capabilities, and interactions with luminescent organisms at various depths. The research highlights factors affecting bioluminescence, such as water flow velocity, inter-specific interactions, and challenges related to organism adhesion and entrapment.

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Insights into Bioluminescence Monitoring Using Advanced Lander Technology

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  1. KM3Net WP5Vertical profiles of bioluminescence Monty Priede & Alan Jamieson Oceanlab i.g.priede@abdn.ac.uk

  2. The Lander Operating Principle Descent at <1m.s-1 Data collection possible during free fall

  3. The Lander Operating Principle Mission Duration 8h to 12 months

  4. The Lander Operating Principle Ship Returns Acoustic Commands Activated

  5. The Lander Operating Principle Ballast Release Ascent Commences

  6. The Lander Operating Principle Surface, Spotting flag VHF DF + ARGOS Data retrieved on board ship

  7. ISIT Lander MORS acoustic releases Current meter ISIT camera controller ballast

  8. Profile mode

  9. CTD ISIT profiler Camera Controller Recorder Splat Screen

  10. ISIT Camera profile mode with ‘Splat Screen’ in field of view

  11. April 2001

  12. August 2001

  13. Gelatinous impacts (2400m)

  14. Large impact (1100m)

  15. Shear Impact Adhesion Spontaneous Trapped Water flow Interaction of Luminescent Organisms with an Array

  16. Abundance of organisms Species Size Status – (reproductive, juvenile, larvae) Locomotor Ability Spontaneous emissions Inter-specific interactions Intra-specific interactions Stimulated emissions Water flow velocity Impacts Shear stress Adhesion Entrapment Biological Factors Detected by an Array

  17. Bioluminescence Detected by an Array • Decrease with depth • Seasonal change • Spontaneous luminescence likely to be unimportant • Luminescence stimulated by the array may be dominant • Adhesion and entrapment of organisms on the array will be be problematic at certain times and depths

  18. The End

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