| Autor: |
Lilley, Martin K. S., Berline, Leo, Ferraris, Martina, Elineau, Amanda, Cuvilliers, Perrine, Stemmann, Lars, Lombard, Fabien |
| Rok vydání: |
2022 |
| Předmět: |
|
| DOI: |
10.17895/ices.pub.20348769 |
| Popis: |
Jellyfish, especially the scyphozoan Pelagia noctiluca cause recurrent and persistent problems to human activities in the Mediterranean Sea, in particular along the French Riviera. Population oscillations have been observed for over 100 years showing alternative periods of presence and absence; however the spatial and temporal intensity of these blooms remains unclear. By means of year-round night-time transects and intensive spatial surveys during summer months, the abundance and biomass of P. noctiluca was quantified in the Ligurian Sea. Pelagia noctiluca was always found in greatest abundance in the core of the Ligurian current, with lower abundances in the central Ligurian basin and coastal areas. In 2013 the population was observed to grow to a very large size and at high abundance. While population biomass was below one tonne per square kilometre in 2012, in the summer of 2013 this biomass surpassed 10 tonnes km-2., potentially greater than the biomass of small pelagic fishes. Fortunately for tourists, this large population of jellyfish remained offshore and was not pushed to the coast by onshore winds. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
|
