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Dromia personata in situ, 6 October 2016, Zeelandbrug, Eastern Scheldt. Underwater photo by Mick Otten
Source publication
Only a few records exist of the sponge crab Dromia personata in the North Sea. Most records are in local languages, and have limited availability. On 11 August 2016, D. personata was found by divers in the Eastern Scheldt, a former estuary in the south-western part of the Netherlands. In the months to follow, at least four other individuals were ob...
Context in source publication
Context 1
... records in the Netherlands emerged by observa- tions made via SCUBA diving. The first Dutch record of Dromia personata was posted on 16 August 2016 on the internet (NatureToday.com) and prompted other biologists and diving naturalists to search for the spe- cies. This resulted in findings that were sometimes ac- companied by underwater photos (Fig. 2) or video. As such, this paper shows the valuable contribution of citi- zen science ( Thiel et al. 2014). Due to its sponge cover D. personata is well camouflaged, but once found it was easily recognized and could not be confused with other ...
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Citations
... Augustine et al., 2016;Musa, 2002), whereas in temperate waters it is mainly national divers who are active . For example, in a study of a rare subtidal crab from the cold-temperate and turbid North Sea (north-west Europe), the participating recreational divers were all local divers (van Moorsel et al., 2017). Rousseau and Fuertes (2020), who investigated divers in a cold-water estuary with limited visibility, also emphasized that divers were mostly local and experienced. ...
• Characterizing the composition of divers visiting different diving areas could help to design marine citizen science (MCS) projects that support biodiversity monitoring and marine conservation.
• Recreational scuba divers mostly prefer warm and clear waters with coral reefs, and based on the Duffus and Dearden’s wildlife tourism framework we hypothesized that a more popular diving area is visited mostly by generalist divers, whereas in a less popular diving area a higher proportion of specialist divers would be found.
• Recreational scuba divers were surveyed in diving centres at two diving areas, Rapa Nui (more popular, with warm and clear coral‐reef waters) and the Chilean mainland (less popular, with productive and temperate–cold waters), to determine their diving profile, visiting profile, marine species knowledge, and interest and participation in MCS.
• Support for our hypothesis (generalist divers on Rapa Nui and specialist divers on the mainland) was weak, but recreational divers on Rapa Nui were mostly foreign visitors who come for single visits, whereas divers from the mainland were predominantly Chileans who return repeatedly to the diving area. In both diving areas the divers expressed a strong interest to be trained and to participate in MCS, but divers from Rapa Nui were interested in brief pre‐dive inductions, whereas divers from the Chilean mainland preferred intensive training courses.
• Based on these findings we recommend specific MCS strategies for divers in both types of areas, e.g. simple protocols in more popular diving areas, with short pre‐dive briefings for divers, and medium or long‐term programmes in areas where most divers are local with high return rates. In these latter conditions more extensive training will be useful, which allows divers to gain more experience and assume higher responsibilities within an MCS project.
