Workshop on “Advances and challenges for understanding physical-biological interactions in HABs in Stratified Environments” Monterey Bay Aquarium Research Institution Moss Landing, California, USA21‐23 August 2012
Margaret McManus, University of Hawaii at Manoa (GEOHAB)
Francisco Chávez, MBARI
Hidekatsu Yamazaki, Tokyo University of Marine Science and Technology
John Ryan, MBARI
Oliver Ross, Unitat de Tecnologia Marina, CSIC, Barcelona (GEOHAB)
Elisa Berdalet, Institut de Ciències del Mar, CSIC, Barcelona (GEOHAB SSC Vice‐chair)
This activity is part of the Core Research Project (CRP) on Stratified Systems (GEOHAB, 2008). It is meant to be a platform to develop future international research and, as such, it fits GEOHAB’s mandate.
Why this workshop? The CRP on Stratified Systems concentrates on the fine scale distribution of microalgae without losing sight of the mesoscale environment –in stratified environments. In those conditions, specific phytoplankton communities containing HABs have been observed to occur in thin layers. In the last 20 years, investigations have been undertaken to further our understanding of the biological and physical mechanisms involved in the formation, maintenance, and dissipation of thin layers. Research has been focused on the relevance of physical microstructure for fundamental life processes of microorganisms (nutrient and light availability, reproduction, life cycle, ecologic interactions) and the relevance of thin layers for HABs. Advances in this area have strongly depended on the development of innovative instruments to observe and adequately sample these environments, as well as advanced numerical models.
Goal. The goal of the workshop is to review our current understanding of the processes governing the structure and dynamics of HABs in stratified systems. We aim to identify gaps in our knowledge in order to orient future research for their improved modelling and prediction. The workshop is designed for engineers, physicists, biologists, and modellers, who work -or have worked -on the various aspects of phytoplankton dynamics in stratified systems and can thus contribute to provide a multidisciplinary understanding of this phenomenon. The main themes addressed in the workshop include - among others physical measurements at small scales, biological-physical interactions across scales, calculation of biological rates, and the incorporation of this knowledge into numerical models that span from small- to regional-scale models.
Outcomes of the workshop: We hope to emerge from this meeting with a conceptual model or ‘roadmap’ of where biological, physical, and chemical measurements of Harmful Algal Blooms in stratified systems should be headed during the next 10 years, as well as a manuscript synthesizing the findings from this meeting. We are hopeful that this setting will also lead to collaborative proposals to conduct a multidisciplinary field experiment addressing this subject. These proposals would most likely involve international collaborations. Given that the workshop will be held in August 2012, the outcomes of the meeting will be ready for the synthesis meeting of GEOHAB (April 2013). The sessions of the program with their plenary speakers are summarized in the following page. The duration and number of presentations within each session will be determined by level of participation.