I - Executive summary
by Ferdinando Boero and Frederic Briand, with contributions by Quentin Bone, Gabriel Gorsky and Tim Wyatt.
1. Introduction
2. Background
3. Dynamics of outbreaks
4. Triggering mechanisms of outbreaks
5. Impact of gelatinous massive events
6. Urgent practical needs

II - Workshop communications

1 - Dynamics of outbreaks: topological, spatial and physical constraints
- Conditions for blooming of pelagic species.
Paul Nival and Gabriel Gorsky

- Topology and dynamics of plankton networks: are pelagic ecosystems robust?
Tim Wyatt, Maurizio Ribera d´Alcala and Ferenc Jordán

- The effects of physics on the distribution of plankton at various scales.
Alex Lascaratos, G. Petihakis, G. Triantafyllou and G. Korres

- Physico-biological coupling and plankton blooms: a modelling approach.
Geneviève Lacroix and Paul Nival

2 - Tunicate outbreaks
- Appendicularian outbreaks: accidents or rule?
Jose Luis Acuña

- Changes in pelagic tunicate abundance and possible ecological consequences.
Quentin Bone

- Aggregations and outbreaks of appendicularians
Gabriel Gorsky, Richard L. Miller and Paul Nival

- Interannual variations of some species of gelatinous zooplankton (Siphonophora and Thaliacea) in a coastal long-term series in the North-Western Mediterranean
P. Licandro, J.C. Braconnot, C. Carré, S. Dallot, M. Etienne, F. Ibanez, and M. Moitié

3 - Jellyfish outbreaks
- Adriatic ecological history: a link between jellyfish outbreaks, red tides, mass mortalities, overfishing, mucilages, and thaliacean plankton?
Ferdinando Boero

- Jellyfish outbreaks: natural cycle or stress response effect?
Adam Benovic and Davor Lucic

- Erratic fluctuations in abundance of medusoid and cnetophores populations in two systems, Ligurian Sea and Benguela ecosystem: some examples.
Emmanuelle Buecher

- Are irregular plankton phenomena getting more frequent in the northern Adriatic Sea?
Alenka Malej

- Past and present anthropogenic factors promoting the invasion, colonization and dominance by jellyfish of a Spanish coastal lagoon.
Francesc Pagès

4 - Black Sea: Mnemiopsis et al. ...
- Distribution of gelatinous macrozooplankton and ecosystem change in the Black Sea.
Erhan Mutlu

- Impact of the invaders ctenophores Mnemiopsis leidyi and Beroe ovata on the pelagic food web and biodiversity of the Black Sea.
Tamara Shiganova

- The catastrophic invasion of the Black Sea by Mnemiopsis leidyi: is it only doing what other ctenophores did long ago?
G. Richard Harbison

- Opportunistic lifestyles of the gelatinous and abundant: what gives a species "the right stuff"?
Patricia Kremer

III - Bibliographic references

IV - List of participants