![]() Five species that represented three scyphozoans and two hydrozoans were frequently observed: Pelagia noctiluca, Velella velella, Physalia physalis, Rhizostoma pulmo and Chrysaora hysoscella. We also examined the negative impacts of jellyfish on human activities in the Moroccan Mediterranean. We present data on the temporal and spatial distribution of the species in relation to environmental variables (e.g., sea surface temperature, salinity, chlorophyll and wind direction). The abundance and size of jellyfish stranded, between January 2018 and December 2020, on the beaches of the Moroccan Mediterranean were investigated. Pelagic cnidarians have been observed stranding annually in the Tetouanise Sea, a site of intense human recreation in northwest Morocco. physalis can play a key role in preventing encounters with the species, allowing marine tourist facilities to operate within a range of reasonable security. The involvement of citizens and touristic structures for the early detection of P. The overview given goes beyond scientific purposes and aims to reach society and public administrators. The increasing sightings of such a poisonous cnidarian in coastal waters can represent a risk to human health, and a threat to all those activities linked to the marine tourism sector. These categories were created to assign a level of danger for swimmers. As the records of this species from the Italian maritime regions were abundant in the summertime and considering the danger related to contact with humans, they were subdivided into three categories of risk according to the months of occurrence. Physalia physalis does not reach the eastern area of the Mediterranean Sea. The dataset shows some massive strandings that occurred in localities of the Strait of Gibraltar and Alboran Sea, the area of the entrance, from the Atlantic toward the Mediterranean waters, and the starting point from where the species spread toward the western and central basin. physalis of the Mediterranean Sea in 1850. Thanks to colonies preserved in some Italian historical museum collections, originating from the western basin, it was possible to date the putative first documented record of P. The temporal frame of the records, considered valid if documented with images or collected specimens, ranged from the second half of the eighteenth century to the year 2021. We conclude that the implementation of preventive management plans should be considered by coastal administrations to promote a sense of safety among tourists and residents alike.Ī search of records from different kinds of sources namely, scientific and grey literature, social media, and zoological museum collections, has been carried out to review the incidence of Physalia physalis (Linnaeus, 1758), the Portuguese man-of-war, in the Mediterranean Sea. ![]() Regarding preferences, tourists are willing to pay higher amounts for measures that provide the highest protection. Results also indicate that the adoption of measures such as jellyfish information provision, warning flags, health service presence or the deployment of jellyfish exclusion nets could reduce the proportion of non-returning tourists by 66–83%. ![]() ![]() Results indicate that in scenarios of increased jellyfish numbers, 24–40% of tourists might not choose to return to a destination affected by jellyfish. A Discrete Choice Experiment approach was adopted to assess tourists’ willingness to pay for different measures. ![]() We investigate how jellyfish presence affects holiday destination choice and how the adoption of mitigation measures can reduce impacts through analyzing tourists’ preferences. Recurrent jellyfish blooms in tourist areas have negative effects on coastal and national economies. ![]()
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