The impact of several environmental factors on density of woodcocks (Scolopax rusticola) wintering in a southern European region / Arizaga A., Crespo-Diaz A., Ansorregi F., Galdós A., Urruzola A., Iriarte E.
Contributor(s): Arizaga, Juan
| Crespo Diaz, Ariñe | Ansorregi, Fermín | Galdós Aitor | Urruzola Aitzol | Iriarte, Eeteban | Aranzadi Zientzia Elkartea | .
Material type: 
Computer fileCitation: Arizaga A., Crespo-Diaz A., Ansorregi F., Galdós A., Urruzola A., Iriarte E. 2015. The impact of several environmental factors on density of woodcocks (Scolopax rusticola) wintering in a southern European region. Eur. J. Wildl. Res.61(3): 407-413 DOI 10.1007/s10344-015-0908-6 Publisher: [S.l.]: Springer Verlag, 5/2015Content type: Texto (visual) Media type: electrónico Subject(s): Coastal regions | Game bird | Gipuzkoa | Hunting | Land uses | Population sizeGenre/Form: Artículo científicoSummary: Abstract Knowledge of spatio-temporal animal distribution
patterns is one of the main chapters of wildlife research, not
only due to its biological and ecological importance but also
its usefulness in the conservation and management of animal
populations. Iberia is a target wintering region for the Eurasian
woodcock (Scolopax rusticola). The aim of the present work
is to determine which factors shape woodcock distribution
patterns during the winter period. To ascertain this, we used
data collected over three consecutive years (winter of 2010/2011–2012/2013) in a region from northern Iberia
(Gipuzkoa). Woodcock numbers (W) were modeled using
generalized linear mixed models. The models that best fitted
our data included a significant effect of latitude, land uses,
sampling year, and type of meadow on W (once weighted
for the number of visits and the area of each meadow).
Overall, W tended to be lower in sites from southern Gipuzkoa, in those areas where there was a higher proportion of tree plantations, in grazed mountain pastures, and during the winters of 2011 and 2012 in relation to 2010 (mean±SD values in 2010, 0.4±0.5 woodcocks/ha; 2011, 0.2±0.3 woodcocks/ha; 2012, 0.2±0.4 woodcocks/ha). Part of the observed variance was due to the Byear^ effect, which could include several potential explanatory variables. Future research should try to add variables such as year-associated meteorological conditions, at both breeding and non-breeding quarters. Locally, a mosaic of some forest/woodland with abundant meadows would allow numbers of woodcocks to reach an optimum within the region. Moreover, the species was more abundant in the north; hence, the zones close to the coast had more importance from a conservation standpoint.
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http://link.springer.com/article/10.1007/s10344-015-0908-6
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Abstract Knowledge of spatio-temporal animal distribution
patterns is one of the main chapters of wildlife research, not
only due to its biological and ecological importance but also
its usefulness in the conservation and management of animal
populations. Iberia is a target wintering region for the Eurasian
woodcock (Scolopax rusticola). The aim of the present work
is to determine which factors shape woodcock distribution
patterns during the winter period. To ascertain this, we used
data collected over three consecutive years (winter of 2010/2011–2012/2013) in a region from northern Iberia
(Gipuzkoa). Woodcock numbers (W) were modeled using
generalized linear mixed models. The models that best fitted
our data included a significant effect of latitude, land uses,
sampling year, and type of meadow on W (once weighted
for the number of visits and the area of each meadow).
Overall, W tended to be lower in sites from southern Gipuzkoa, in those areas where there was a higher proportion of tree plantations, in grazed mountain pastures, and during the winters of 2011 and 2012 in relation to 2010 (mean±SD values in 2010, 0.4±0.5 woodcocks/ha; 2011, 0.2±0.3 woodcocks/ha; 2012, 0.2±0.4 woodcocks/ha). Part of the observed variance was due to the Byear^ effect, which could include several potential explanatory variables. Future research should try to add variables such as year-associated meteorological conditions, at both breeding and non-breeding quarters. Locally, a mosaic of some forest/woodland with abundant meadows would allow numbers of woodcocks to reach an optimum within the region. Moreover, the species was more abundant in the north; hence, the zones close to the coast had more importance from a conservation standpoint.
Arizaga A., Crespo-Diaz A., Ansorregi F., Galdós A., Urruzola A., Iriarte E. 2015. The impact of several environmental factors on density of woodcocks (Scolopax rusticola) wintering in a southern European region. Eur. J. Wildl. Res.61(3): 407-413 DOI 10.1007/s10344-015-0908-6
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