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3.B.1.2 | Opportunistic settlers |
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| Issue | Environmental/social impacts | Other problems | Implementing authority | Operational
targets Short term |
Operational
targets Long term |
| Opportunistic settlers | Introduced opportunistic settlers e.g. ctenophore Mnemiopsis leidyi
has shown outbreaks and have caused negative effects on fish population and environment Some species, which have adapted to the Black Sea environment and replaced indigenous species, are now harvested as living marine resources |
Risk of exportation of opportunistic settlers from the
Black Sea into other seas Further introduction of other opportunistic settlers into the Black Sea in the future |
Ministries of Environment Ministries of Fisheries Ministries of Transport |
Monitoring of opportunistic settlers in the Black Sea
ecosystem In situ/ex situ investigations on potential opportunistic settlers predators Development of effective control of ships ballast waters and fouling organisms |
Manage fisheries so as to enhance populations of indigenous fish
competing with or preying on opportunistic settlers International cooperation to control of unwanted exotic species in ballast water discharges (need IMO to take measures to prevent ballast discharges) Research network for monitoring of exotic species outbreaks |
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3.B.1.2 | Mnemiopsis leidyi jelly |
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3.B.1 | Fisheries issues: status of stocks and management of wild resources |