An Unprecedented Event
The latest edition of the BioMARató has revealed the presence of several tropical and subtropical marine species in Catalan waters, a surprising fact that has caught the attention of scientists and naturalists. Hundreds of volunteers have joined this initiative, which seeks to document marine biodiversity, and have collected valuable data over the course of six months.
Notable Finds
The most outstanding discoveries include the fireworm (Hermodice carunculata), observed for the first time in the underwater park of the Tarragona SES, and the purple starfish (Ophidiaster ophidianus) in L’Ametlla de Mar. The fireworm, which can measure up to 30 centimeters, is a polychaete with stinging hairs that had never before been seen on the Catalan coast.
Impact of Marine Warming
In addition to the new species, the BioMARató has highlighted an increase in invasive species, a worrying indicator of global warming and changes in biological cycles. For example, premature ovulation of gorgonians and early flowering of posidonia have been observed.
Diversity record
With a total of 1,731 species registered and more than 91,000 observations on the MINKA platform, this year’s BioMARató has set a new record. Coordinated by the Institute of Marine Sciences (ICM-CSIC), the event has mobilized more than 480 volunteers dedicated to the preservation and study of marine biodiversity.
News in Marine Wildlife
Among the species that have appeared for the first time, the Atlantic parrotfish stands out, as well as the Brazilian salpa (Kyphosus saltatrix), both observed in various locations along the coast. An invasive alga, Rugulopteryx okamurae, has also been identified, which has been detected for the first time in Catalonia in the port of Llançà.
Alterations in Natural Cycles
The event has revealed significant changes in the biological cycles of some species. In Llafranc, an early ovulation of the red gorgonia (Paramuricea clavata) has been recorded, and in L’Ametlla de Mar, the oceanic Posidonia has started to bloom almost two months earlier than usual. In addition, coral bleaching has been observed, a worrying phenomenon that affects the reproduction of these organisms.
Curious Observations
Citizen participation has made it possible to register unusual phenomena, such as the flowering of the cypress (Cymodocea nodosa) in L’Ametlla de Mar, as well as the presence of false striped barnacles (Conchoderma virgatum) on the Costa Brava. In addition, the accidental capture of a basking shark (Cetorhinus maximus), a species of interest for the study of its migratory patterns, has been documented.
A Look Towards the Future
With rising water temperatures and changes in biodiversity, the BioMARató not only serves as a scientific research tool, but is also a reminder of the importance of marine conservation. The active participation of the community is essential to face the challenges presented by climate change and to preserve our natural heritage for future generations.
