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The data presented here come from field observations between August 2013 and October 2018, as part of a LIFE research project aiming to preserve and restore three coastal wetlands from Praia da Vitória (Terceira Island, Azores, Portugal). Systematic monthly observations were carried out for five years in order to provide a checklist and monitoring of bird species and subspecies observed in three sites: Paul da Praia da Vitória (PPV), Paul do Belo Jardim (PBJ) and Paul da Pedreira do Cabo da Praia (PPCP). Main objectives were to determine their ornithological richness while also adding data to the overall knowledge of Azorean Avifauna and monitor seasonal and between years variation on species abundance.
The data presented here comes from field observations, carried out between 2014 and 2017, as part of a LIFE research project aiming to preserve and restore three coastal wetlands of Praia da Vitória (Terceira Island, Azores, Portugal) (LIFE-CWR). A total of 23 vascular plant species surveys were carried out in three sites: one for each semester in Paul da Praia da Vitória (PPV) and Paul da Pedreira do Cabo da Praia (PPCP); one for each semester (except in 2014) in Paul do Belo Jardim (PBJ). Main objectives were to determine the plant richness of the three sites and monitor seasonal and between year variation on species composition.
The dataset contains the results of a monitoring program carried out from 1972 to 2018 on the breeding populations of 12 species of colonial waterbirds (Families Ardeidae, Phalacrocoracidae, Plataleidae, Threskiornitidae) throughout an area of 58,000 square kilometers in northwestern Italy. The dataset provides estimates of the number of nests of each species, at each of the 419 breeding sites, and for each of the 47 years (a total of 236.316 data). The survey of the colonies, and the count of nests at each colony, were performed by a trained team of collaborators, using standardized field techniques and under a centralized coordination. During the five decades of monitoring, the breeding populations underwent large changes. The number of yearly active colonies increased from 45 in 1972 to 278 in 2018, and throughout the same period the five species that were breeding in 1972 were joined by seven new breeding species, including the allochthonous Sacred Ibis. The populations of herons and egrets increased greatly from 1985 to 2000, likely due to reduced human-induced mortality and to climatic variations (Fasola et al. 2010 DOI 10.1007/s10144-009-0165-1). After 2000, this positive trend reversed into a strong decline for Ardea cinerea, Egretta garzetta and Nycticorax nycticorax in the sector of the monitored area (paddies) where their main foraging habitats are rice paddies, in connection with a change in rice cultivation practices that progressively reduced the extent of flooding. Noteworthily, the same species remained stable or continued to increase in the two other sectors (rivers and uplands) where the birds forage over natural habitats.