Structural change in marine ecosystems: regime shifts or not?
Friday Seminar by Christopher Lynam
Regime shifts in marine systems have been well researched in recent years and numerous studies have shown evidence for abrupt change in ecosystem structure. However, a thorough examination of any 'regime shift' will reveal many complexities. As a result the identification of regime shifts is not a simple task and predictive tools are still in their infancy. From the suite of methods available to detect regime shifts, I have favoured statistical regression based methods. As a case study, I explore the Irish Sea ecosystem and investigate temporal change in the abundance of phytoplankton, crustacean zooplankton, jellyfish and finfish. I aim to extend these analyses using multivariate methods to detect regime shifts in the Celtic Seas and wider North Sea Ecoregions.
Dr Christopher Lynam
Centre for Environment, Fisheries & Aquaculture Science
Lowestoft, Suffolk, UK