The role of Natura 2000 in relation to breeding birds decline on multiple land cover types and policy implications
2021
Portaccio, Alessia | Basile, Marco | Favaretto, Andrea | Campagnaro, Thomas | Pettenella, Davide | Sitzia, Tommaso
The Natura 2000 network of protected sites is the pillar of biodiversity conservation in Europe. Although the Natura 2000 network directly addresses birds, these have shown worrying declining trends. It is therefore crucial to assess the potential contribution of Natura 2000 conservation measures. In this paper, we use a replicable method to model bird trends in the period 2000–2015 and the effects of Natura 2000 protection, across land cover classes, on regional abundances and local species richness and diversity. We model bird trends in Veneto, a North-Eastern Italian Region with areas among the richest in bird species in Italy. Bird data were derived from the national breeding bird monitoring scheme. Breeding birds showed declining trends at the regional level, confirming national and continental trends, particularly on agricultural and natural areas. The land cover class, rather than Natura 2000, mostly influenced population trends; however, it was possible to observe slightly higher estimates of species richness and diversity in Natura 2000 sites. Despite the absolute higher estimates of richness and diversity over the investigated period, farmland and woodland bird species had steeper declining trends inside Natura 2000 than outside, matching the values of the areas outside the network at the end of the survey period. We conclude that the Natura 2000 network capacity to buffer biodiversity loss and act as a species-pool for non-protected areas is decreasing over time, mainly with regards to farmland and woodland birds. Natura 2000 implementation must be improved: conservation objectives and measures, management, and monitoring should be better integrated into existing plans and funding should be made more efficiently available for Natura 2000.
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