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Title: Seasonality, interannual variation and distribution of Carybdea marsupialis (Cnidaria : Cubozoa) in the Mediterranean coast : influence of human impacts
Authors: Acevedo, Melissa J.
Canepa, Antonio
Bordehore, Cesar
Bosch-Belmar, Mar
Alonso, Cristina
Zappu, Sabrina
Dura, Elia
Deidun, Alan
Piraino, Stefano
Calbet, Albert
Fuentes, Verónica
Keywords: Fishes -- Mediterranean Sea
Ecology -- Mediterranean Sea
Jellyfishes -- Malta
Cnidaria -- Malta
Issue Date: 2016
Publisher: Institut de Ciències del Mar, CSIC
Citation: Acevedo, M. J., Canepa, A., Bordehore, C., Bosch-Belmar, M., Alonso, C., & Zappu, S. (2016). Seasonality, interannual variation and distribution of Carybdea marsupialis (Cnidaria: Cubozoa) in the Mediterranean coast: influence of human impacts. 5th International Jellyfish Bloom Symposium, Barcelona. 92.
Abstract: This study addresses the seasonal and interannual variability in box jellyfish abundance for a population of Carybdea marsupialis monitored along the coast of Denia (NW Mediterranean, Spain). Environmental data and cubomedusae density have been monthly recorded from March 2010 to December 2013. Environmental variables registered included water temperature, salinity, nutrients concentration (i.e. DIN, phosphate and silicon), chlorophyll concentration and zooplankton abundance and composition. Generalized Additive Models (GAM) have been fitted to understand the relationships of aforementioned environmental variables and C. marsupialis abundance. Salinity and chlorophyll concentration have been reported as the most important variables influencing C. marsupialis abundance, as well as N and P concentrations. Also, LUSI (Land Use Simplified Index) showed a positive correlation with the presence of this box jellyfish; this index reflects the impact of nutrient inputs along the coast. Moreover, an ensemble platform for species distribution model (Biomod2 package for R software) has been fitted using the sightings of the species recorded through different citizen science databases from the Mediterranean region (ENPI-Medjellyrisk and LIFE+ Cubomed projects). A forecasting of the probability of occurrence of this species under current environmental conditions was developed, and the results indicate that C. marsupialis inhabits in coastal areas characterized by a high degree of human disturbance. This and other previous studies relating box jellyfish blooms with the intensity of human coastal activities need to be considered during the development of coastal management protocols.
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