The relative role of local temperature in the winter occurrence of woodcock Scolopax rusticola in the northern Iberian Peninsula /
Nerea Prieto, Juan Arizaga, Esteban Iriarte, Fermin Ansorregi, Aitor Galdos, Aitzol Urruzola, Iñaki Olano, Giacomo Tavecchia.
-- [S.l.]: Springer Verlag, 2023.
- pp. 69-72
Restringido
The dynamics of migratory populations at wintering quarters can inform on population state and size because these areas
act as demographic funnels, assembling birds from different origins. Previous evidence on survival probability of woodcock
Scolopax rusticola wintering in northern Spain suggested a high harvesting pressure, but whether this pressure is causing
a decline of woodcock occurrence at wintering quarters is still to be assessed. We used data from 3411 surveys conducted
during the winter at 434 selected grasslands in the Gipuzkoa region, Northern Spain, to investigate the dynamics of woodcock
occurrence probability, conditional on detection, over a period of 10 years (2009–2019). A 47% of the variation in woodcock
occurrence within and across winters was explained by the monthly average minimum temperature. The remaining variation
was due to a marked increase during the winters 2016 and 2017, contrary to the progressively decreasing values detected in
previous years. At present, these abrupt yearly fluctuations prevent clear predictions on woodcock presence in the Gipuzkoa
region. Future studies should explore woodcock occurrence probability according to scenarios of climate and habitat changes.
Prieto, N., Arizaga, J., Iriarte, E., Ansorregi, F., Galdos, A.,Urruzola, A., Olano, I., Tavecchia, G., 2023. The relative role of local temperature in the winter occurrence of woodcock Scolopax rusticola in the northern Iberian Peninsula. European Journal of Wildlife Research 2023, 69-72. https://doi.org/10.1007/s10344-023-01705-y
Demography
Population trend
Forest-dwelling shorebirds
Migrant species
Wintering area
Artículo científico
Restringido
The dynamics of migratory populations at wintering quarters can inform on population state and size because these areas
act as demographic funnels, assembling birds from different origins. Previous evidence on survival probability of woodcock
Scolopax rusticola wintering in northern Spain suggested a high harvesting pressure, but whether this pressure is causing
a decline of woodcock occurrence at wintering quarters is still to be assessed. We used data from 3411 surveys conducted
during the winter at 434 selected grasslands in the Gipuzkoa region, Northern Spain, to investigate the dynamics of woodcock
occurrence probability, conditional on detection, over a period of 10 years (2009–2019). A 47% of the variation in woodcock
occurrence within and across winters was explained by the monthly average minimum temperature. The remaining variation
was due to a marked increase during the winters 2016 and 2017, contrary to the progressively decreasing values detected in
previous years. At present, these abrupt yearly fluctuations prevent clear predictions on woodcock presence in the Gipuzkoa
region. Future studies should explore woodcock occurrence probability according to scenarios of climate and habitat changes.
Prieto, N., Arizaga, J., Iriarte, E., Ansorregi, F., Galdos, A.,Urruzola, A., Olano, I., Tavecchia, G., 2023. The relative role of local temperature in the winter occurrence of woodcock Scolopax rusticola in the northern Iberian Peninsula. European Journal of Wildlife Research 2023, 69-72. https://doi.org/10.1007/s10344-023-01705-y
Demography
Population trend
Forest-dwelling shorebirds
Migrant species
Wintering area
Artículo científico