Benjamin H. Sherman
Columbia University, Palisades, NY 10964, USA
Key words: marine ecosystems, ecosystem disturbance, ecosystem health assessment, Baltic Sea, HEED.
Abstract.
An approach is described for systematically reconstructing
spatial and temporal marine disturbance regimes related to Baltic marine
morbidity, mortality and disease events. The approach is compatible with
the health module of the Baltic Sea's Large Marine Ecosystem initiative
and consistent with implementation of the Baltic Sea Agenda 21 program.
The approach is based upon a survey of disturbance events conducted in
the Northwestern Atlantic Ocean, known as the HEED project. Eight general
disturbance indicator categories are suggested for assessment of the health
of the Baltic Sea ecosystem. These general disturbance types represent
over 140 distinct impact categories and may be used to examine the relationship
among impact causes, effects and costs from disturbances observed for the
near coastal and open waters of the Baltic Sea ecosystem.