A recent study suggests that the accumulation of organisms on stalled ships in the Gulf region due to the closure of the Strait of Hormuz could lead to a significant spread of invasive species, posing a global biosecurity threat in the long run.
According to the research published in the journal Biological Invasions, around 1,500 ships are currently stuck in the Persian Gulf, with additional vessels stranded in the Gulf of Oman amid the ongoing U.S.-Iran conflict. The prolonged idleness of these ships has created conditions for biofouling, where algae, barnacles, and other organisms attach to the vessels’ hulls.
Lead author Mario Tamburri, from the University of Maryland Center for Environmental Science, emphasized the potential for these ships to become “super-spreaders” of invasive species once they resume their voyages. The closure of the strait coincided with the organisms’ growing and reproductive seasons, increasing the risk of biofouling spreading to new ports.
The study highlights the challenges of managing biofouling on ships that have been stationary for an extended period. The researchers noted that hull coatings, designed to prevent biofouling, become less effective when vessels are not in operation, further exacerbating the risk of species transfer.
Experts warn that if invasive species are transported to new ecosystems through biofouling, they could out-compete native species, leading to ecological imbalances. The study underscores the need for enhanced regulations and practices to mitigate the spread of invasive species through biofouling, alongside the existing focus on ballast water management.
Notably, the situation in the Gulf region serves as a stark reminder of the interconnectedness of geopolitical events and ecological consequences on a global scale. The long-term implications of the biosecurity threat posed by the stalled ships in the region remain uncertain, with potential ramifications for marine ecosystems worldwide.