Average number of individuals
The Regional Council of Sardinia, on the proposal of the Councillor for Environmental Protection Rosanna Laconi, in agreement with the Councillor for Agriculture and Agro-pastoral Reform Francesco Agus, has approved the resolution with which the methods for carrying out the censuses of the Cormorant populations (Phalacrocorax carbo), superseding the method adopted with the 2015 resolution. This measure represents an initial concrete response to the needs of the lagoon fishing and aquaculture sector, which in recent years has reported with growing concern the impact of this species on fish stocks in Sardinian ponds. The cormorant census provides the technical basis for determining the average number of individuals present and for the subsequent economic quantification of the damage caused to fish production.
What changes in concrete terms
In light of the scientific findings from regional censuses and international literature, the resolution introduces a revision to the sampling method for fishing activity in fisheries. Instead of the five daily sampling periods established in the method adopted in 2015, surveys will now be conducted in three morning time slots—08:00, 10:00, and 12:00—considered more representative of the species' actual predation activity. Studies show that, during the winter, most cormorants concentrate their feeding activity in the early hours of the day, while fishing intensity tends to gradually decrease over the course of the day. "With this measure," states Councilor Rosanna Laconi, "we are addressing a key aspect of the proper management of this phenomenon, updating the data collection method and making the surveys more accurate. Having more accurate data means we can better assess the species' impact and provide more effective and transparent support to the fishing and aquaculture businesses operating in our lagoon systems."
New study methodologies
The methodological update approved by the Regional Council is part of a broader scientific study, mandated by the 2026 Regional Stability Law, which authorized an annual allocation of €70 for the 2026-2027 period to Sardinian universities for cormorant census activities and the development of new methodologies for studying and managing the species. The study will further update survey methods in light of recent scientific and technological advances. The goal is to refine monitoring tools and bring estimates of the species' presence ever closer to actual data, while also improving the criteria for determining compensation. The research will also leverage the significant experience and knowledge accumulated over time by lagoon fisheries operators, which represents a valuable resource for improving observation and analysis methodologies.
Constant collaboration
"Managing the relationship between wildlife and productive activities," adds Councilor Laconi, "requires solid scientific knowledge, up-to-date monitoring tools, and ongoing collaboration with the research community. The work we will begin with Sardinian universities will allow us to further improve our understanding of the phenomenon and develop increasingly effective responses for the sector." The resolution also establishes that the new census methods will be implemented starting in the 2024-2025 season, mandating the relevant offices to ensure the dissemination of the new criteria among local governments to ensure their uniform application. With this initiative, the Sardinia Region confirms its commitment to combining the protection of biodiversity with the safeguarding of traditional economic activities, promoting management tools increasingly grounded in scientific knowledge and the proper assessment of the ecosystem balance of the island's lagoon systems (source: Sardinia Region).
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