AquaNISInformation system on aquatic non-indigenous and cryptogenic species |
Species | Gonionemus vertens | |
Date of the first record (?) | 1921 References (not structured): Wolff 2005, therein: Broch (1929) first findings of the medusa in the Oslofjord in 1921. |
Recipient region (?) | Country: Norway LME: 22. North Sea References (not structured): Gederaas, L., Moen, T.L., Skjelseth, S. & Larsen, L.-K. (eds.). Alien species in Norway – with the Norwegian Black List 2012. The Norwegian Biodiversity Information Centre, Norway. |
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Source region (?) | LME: 22. North Sea --> LME sub-region: North Sea |
Pathway / Vector (?) | Level of certainty: Possible Pathway: Natural spread from neighboring countries Vector: Water currents Pathway: Vessels Vector: Ballast water Vector: Ship’s hull |
Habitat type (?) | Estuary Open coast Port vicinity Strait/Sound |
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Wave exposure (?) | Sheltered | |
Salinity range (?) | Not entered | |
Temperature range (?) | Not entered |
Zonation / Substratum (?) | Benthic and Pelagic: Neritic Sublittoral within photic zone Substratum: Artificial (manmade) Biogenic (living or nonliving) Hard (cobbles to bedrock) |
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Reproductive duration (?) | Not entered | |
Reproductive seasonality (?) | Not entered | |
Migration pattern (?) | Not entered |
Population status (?) | Common (Moderate level of certainty) | |
Species status (?) | Non-indigenous species References (not structured): Kramp 1922 Gederaas, L., Moen, T.L., Skjelseth, S. & Larsen, L.-K. (eds.). Alien species in Norway – with the Norwegian Black List 2012. The Norwegian Biodiversity Information Centre, Norway. |
Port vicinities | Port vicinity: Oslo Date of the first record: 1921 Population status: Not entered References: Wolff 2005, therein: Broch (1929) first findings of the medusa in the Oslofjord in 1921. |
Created by | Stephan Gollasch, 2012-01-23 |
Last update by | Stephan Gollasch, 2017-09-29 |