RT Journal Article
T1 A synthesis of Eurasian Curlew (Numenius arquata arquata) demography and population viability to inform its management
A1 Viana, Duarte S.
A1 Santoro, Simone
A1 Soriguer, Ramón C.
A1 Figuerola, Jordi
AB The European population of Eurasian Curlew Numenius arquata arquata, a nearthreatenedwader subspecies, has undergone pronounced population declines over thepast 30 years. To assess the demography and viability of its global population, we surveyedstudies quantifying demographic rates (productivity and survival) and complementedthis review with new estimates of survival probability at the flyway scale. Then,using a demographic model, we estimated population growth rates while accounting forthe range of variation of demographic parameters, and compared these estimates(expected based on demographic rates) with those observed based on population censuses.Both observed and expected average growth rates were negative but the observedrates were higher than estimates from demographic models (λ = 0.98–0.99 comparedwith 0.85–0.95). This discrepancy implies that there is geographical variation in thedemography of different populations that is not fully covered by current demographicdata, namely unstudied regions with higher productivity. According to our calculations,at the flyway scale, productivity is currently c. 0.57 fledglings per pair per year, higherthan the average reported productivity of 0.29, but lower than the 0.68 needed toachieve a stable global population size (λ = 1). Adult survival, estimated at 0.90, wasthe most sensitive parameter determining population growth rates, but the low productivitylevels over the last few decades seems to be the most probable cause of populationdeclines. The negative population growth rates require immediate conservation actionsto preserve adult survival and increase the extremely low productivity in western andnorthern European populations to values above 0.68 fledglings per pair per year. Wehope our synthesis on the demographic status of Curlew in Europe will encourage thecollection of more demographic data and allow concrete management goals at the flywayscale to be established in order to recover the global population of this iconic species.
PB Wiley
SN 0019-1019
SN 1474-919X (electrónico)
YR 2023
FD 2023
LK https://hdl.handle.net/10272/22229
UL https://hdl.handle.net/10272/22229
LA eng
NO Viana, D. S., Santoro, S., Soriguer, R. C., & Figuerola, J. (2023). A synthesis of Eurasian Curlew (Numenius arquata arquata) demography and population viability to inform its management. In Ibis (Vol. 165, Issue 3, pp. 767-780). Wiley. https://doi.org/10.1111/ibi.13184
NO Fédération Nationale des Chasseurs (Grant/Award Number: "FNC-PSN-PR11B-2013").
DS Repositorio Institucional de la Universidad de Huelva
RD 31 may 2026