The presence of invasive algae on the beaches of the Algarve is raising concerns between summer and local authorities. The species, originating from Asia, has been accumulated in recent weeks, altering the landscape and making it difficult to stay in the sand due to the intense odor it release when it decomposes.
According to the Spanish influencer known as @lasis.si, on Instagram, Praia dos Três Castles, in Portimão, has been one of the most affected places. The beach, located next to the popular Praia da Rocha, is usually sought by those who prefer a slightly calmer environment, observable from the Três Castles viewpoint, at the top of the cliff. The sand is smaller than the neighbor, but shares the same rock configuration that gives it identity.
Impacts on landscape and tourism
The invasion of algae in the one that is one of the “most beautiful” beaches of the Algarve has changed the experience of bathers. Those who go through the beach toward west find zones with less movement, but also more accumulated vegetable waste near the water line. In addition, the intense smell sense on higher hot days has led some to look for other nearby destinations. “You can’t be,” says the Spanish tourist.
Writes the portal Algarve Portugal Tourism that the name of the beach comes from three imposing rock formations, visible in the sea. When crossing one of these rocks in the sand, one arrives at Amado Beach, a distinct space but equally affected by the same accumulation.
A Challenge with High Costs
It adds that the problem is not exclusive to Portimão. In lakes, the annual removal costs of these algae already exceed 100,000 euros, representing a significant charge for coastal municipalities. The impact is also reflected in local commerce, with some establishments registering breaks during the high season.
It refers to the same source that, although it is not a risk to human health, the species prevents the development of other marine forms of marine in places where it is installed. Preliminary studies suggest that it may have applications in the pharmaceutical or agricultural industry, but the use is not yet defined.
A problem that can get worse
It explains the same source that the difficulty in combating this type of invasion is the rapid reproduction capacity and fixation of the seaweed in the marine bottom. Without an effective method of collection and reuse, the phenomenon can intensify in the next summers, forcing frequent and expensive interventions.
Environmental municipalities and entities continue to look for solutions that reconcile the preservation of the ecosystem with the maintenance of the tourist attractiveness of these bathing zones.
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