The weakening of the trade winds, a decrease in rainfall, the neglect of rural areas in the central region, and the almost complete disappearance of grazing have created ideal conditions for the proliferation of cat’s tail (pennisetum setaceum) in the south of Tenerife, making it one of the most destructive invasive species for the native flora.
These findings were shared with DIARIO DE AVISOS by Wladimiro Rodríguez Brito, a Geography doctor and former insular Minister of Agriculture, who advocates for a greater focus on agricultural and livestock activities to halt the spread of the grass from Northeast Africa, which has high reproductive capabilities and was introduced in the 1940s.
“If there were more grazing or farming activities in areas like the southern median, the growth of the feline tail would be significantly controlled: we need to revive these activities,” expressed the specialist. He emphasised the role of sheep flocks – referring to them as the “great allies” in combating this menace – currently at minimal levels in the region, as they “help eradicate this species” and prevent fires, noting that the cat’s tail contributes to fire spread.
“I am deeply worried about the amount of neglected land in the medians and the perimeters of homes surrounded by shrubbery; Land without farmers or shepherds poses a risk,” he underlined. Additionally, he lamented that the collection of cat tail ears has “turned into a temporary activity sporadically assigned to the unemployed,” demanding sustained efforts in this regard.
He also pointed out that this threat to endemic biodiversity is advancing from the coast towards “agriculturally neglected midland areas,” although clarifying that it has not infiltrated pine or laurel forests.
Experts caution about the formidable invasive abilities of this species, capable of producing thousands of seeds dispersed by the wind, water, animals, footwear, and vehicles. This herbaceous perennial plant, highly resistant to trampling, cutting, or fire, grows rapidly and can start flowering just three months after germination.
GÜÍMAR
Municipalities such as Güímar are formulating a strategy to control this species after compiling a report on its prevalence in various parts of the region, with a “considerable” presence on road edges, neglected plots, and orchards extending from sea level up to about 700 meters, according to Nayra Caraballero, Güímar’s councilor for Rural Development and Agriculture.
