Riserva naturale Bosco Siro Negri, protected area in Italy (EUAP0089)

Riserva naturale Bosco Siro Negri is a strict nature reserve owned by the University of Pavia, covering 34 hectares on the right bank of the Ticino in the municipalities of Pavia and Zerbolò. Its lowland forest, with English oaks, elms, hornbeams and black poplars reaching 30–35 metres, has developed without management since the wood was donated in 1967. Access is limited to scientific research, education and surveillance.

The woods were donated to the University of Pavia by Giuseppe Negri in 1967 and established as a nature reserve in 1970. In 1973, the Italian state officially recognized the reserve through a ministerial decree as a protected natural area, while the university chose to let the forest ecosystem develop naturally.

The reserve takes its name from Siro Negri, brother of Giuseppe Negri, who donated the land to the University of Pavia in 1967. The university's Department of Earth and Environmental Sciences runs the reserve, and its educational centre at the Botanical Garden of Pavia hosts classes and a multimedia laboratory using an interactive plant guide. The site is not open to the public; access is limited to research, education and surveillance.

Access to the reserve is limited to scientific research, educational activities and surveillance, and requires permission from the University of Pavia; there are no marked trails or guided tours for the general public. The educational centre is at the Botanical Garden of Pavia, where school and citizen activities are held. The reserve lies on the right bank of the Ticino, in the municipalities of Pavia and Zerbolò.

Recent research has highlighted the exceptional saproxylic fauna of the reserve: organisms that live in dead wood, rich in species and in unique faunal elements. Because the forest is left entirely unmanaged, fallen trunks and standing dead trees accumulate, offering these insects and fungi habitats that are rare in the Po Valley.