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Marine & Wildlife
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Local Variability of Trace Element Concentration in Barn Swallow (Hirundo rustica) Nestlings from the Po Plain (Northern Italy)
Environments2023
4 citations
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Score: 35
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Marco Parolini,
Roberto Ambrosini,
Marco Parolini,
Marco Parolini,
Roberto Ambrosini,
Marco Parolini,
Marco Parolini,
Marco Parolini,
Marco Parolini,
Marco Parolini,
Marco Parolini,
Alessandra Costanzo
Alessandra Costanzo
Alessandra Costanzo
Alessandra Costanzo
Marco Parolini,
Roberto Ambrosini,
Marco Parolini,
Marco Parolini,
Michela Sturini,
Roberto Ambrosini,
Roberto Ambrosini,
Roberto Ambrosini,
Roberto Ambrosini,
Marco Parolini,
Marco Parolini,
Marco Parolini,
Roberto Ambrosini,
Marco Parolini,
Marco Parolini,
Marco Parolini,
Marco Parolini,
Roberto Ambrosini,
Marco Parolini,
Marco Parolini,
Andrea Romanò,
Marco Parolini,
Roberto Ambrosini,
Roberto Ambrosini,
Roberto Ambrosini,
Marco Parolini,
Marco Parolini,
Federica Maraschi,
Marco Parolini,
Marco Parolini,
Marco Parolini,
Andrea Romanò,
Marco Parolini,
Marco Parolini,
Marco Parolini,
Marco Parolini,
Marco Parolini,
Marco Parolini,
Manuela Caprioli,
Manuela Caprioli,
Roberto Ambrosini,
Marco Parolini,
Marco Parolini,
Marco Parolini,
Marco Parolini,
Roberto Ambrosini,
Marco Parolini,
Marco Parolini,
Andrea Romanò,
Federica Maraschi,
Marco Parolini,
Simone Vanni,
Marco Parolini,
Marco Parolini,
Marco Parolini,
Simone Vanni,
Marco Parolini,
Marco Parolini,
Diego Rubolini,
Marco Parolini,
Roberto Ambrosini,
Marco Parolini,
Roberto Ambrosini,
Marco Parolini,
Marco Parolini,
Marco Parolini,
Antonella Profumo,
Marco Parolini,
Marco Parolini,
Marco Parolini,
Marco Parolini,
Marco Parolini,
Diego Rubolini,
Marco Parolini,
Roberto Ambrosini,
Marco Parolini,
Marco Parolini,
Luca Canova,
Marco Parolini,
Michela Sturini,
Diego Rubolini,
Roberto Ambrosini,
Marco Parolini,
Marco Parolini,
Roberto Ambrosini,
Marco Parolini,
Roberto Ambrosini,
Roberto Ambrosini,
Roberto Ambrosini,
Marco Parolini,
Diego Rubolini,
Diego Rubolini,
Alessandra Costanzo
Summary
Researchers measured concentrations of twelve trace elements in the feathers of barn swallow (Hirundo rustica) nestlings across sewage-sludge-amended and non-amended areas in the Po Plain, northern Italy, in 2019 and 2020. Multivariate analysis showed significant differences in element profiles among years and areas, suggesting nestling feathers can serve as reliable bioindicators of local trace element contamination, though univariate analyses did not identify clear spatial differences, possibly due to multiple overlapping contamination sources.
Birds are commonly used as bioindicators, and their feathers are considered suitable tissues for assessing the presence of contaminants, such as trace elements, in the environment. In agroecosystems, trace elements’ occurrence can be associated with both natural and anthropogenic processes, including vehicular traffic, traditional fertilizers, food feed additives for livestock, and the use of sewage sludge as fertilizer. Here, we evaluated the concentrations of twelve trace elements (Aluminium, Arsenic, Cadmium, Chromium, Copper, Iron, Mercury, Manganese, Nickel, Lead, Selenium, and Zinc) in the feathers of barn swallow (Hirundo rustica) nestlings. We then compared the concentrations of these elements between nestlings grown in areas amended or not amended with sewage sludge in 2019 and 2020 in a broad region of the Po Plain (Northern Italy). Multivariate analysis showed that the element content of the feathers significantly differed among years and areas, suggesting that the concentration of nestlings’ feathers may indicate the local level of contamination. However, univariate analyses did not show clear spatial differences, possibly due to co-occurring sources of trace elements other than sewage sludge. These results suggest that barn swallow nestlings can be a reliable sentinel for the monitoring of local variation of the environmental occurrence of trace elements.