Is there an optimum scale for predicting bird species' distribution in agricultural landscapes?

• Published in: Journal of environmental management Vol. 136; pp. 54 - 61
• Main Authors: Pelosi, Céline, Bonthoux, Sébastien, Castellarini, Fabiana, Goulard, Michel, Ladet, Sylvie, Balent, Gérard
• Format: Journal Article
• Language: English
• Published: Kidlington Elsevier Ltd 01.04.2014; Elsevier; Academic Press Ltd
• Subjects: Agricultural landscape; Agriculture; Animal populations; Animal, plant and microbial ecology; Animals; Applied ecology; Aves; Biodiversity; Biological and medical sciences; Birds; Birds - classification; Conservation; Conservation, protection and management of environment and wildlife; Forest index; Forestry; Forests; France; Fundamental and applied biological sciences. Psychology; General aspects; General forest ecology; Generalities. Production, biomass. Quality of wood and forest products. General forest ecology; Generalized linear models; Life Sciences; Predictions; Predictive models; Scale; Vertebrates: general zoology, morphology, phylogeny, systematics, cytogenetics, geographical distribution; France; Agricultural landscape; Predictive models; Birds; Scale; Forest index; Conservation; Forests; Rural environment; Rural landscape; Forecast model; Environmental management; Optimum; Vertebrata; Spatial distribution; Geographic distribution; Aves; Species; Distribution range; scale; conservation; forest index; predictive model; agricultural landscape; bird
• ISSN: 0301-4797; 1095-8630
• DOI: 10.1016/j.jenvman.2014.01.022

Changes in forest cover in agricultural landscapes affect biodiversity. Its management needs some indications about scale to predict occurrence of populations and communities. In this study we considered a forest cover index to predict bird species and community patterns in agricultural landscapes in south-western France. We used generalized linear models for that purpose with prediction driven by wooded areas' spatial distribution at nine different radii. Using 1064 point counts, we modelled the distribution of 10 bird species whose habitat preferences are spread along a landscape opening gradient. We also modelled the distribution of species richness for farmland species and for forest species. We used satellite images to construct a ‘wood/non-wood’ map and calculated a forest index, considering the surface area of wooded areas at nine radii from 110m to 910m. The models' predictive quality was determined by the AUC (for predicted presences) and ρ (for predicted species richness) criteria. We found that the forest cover was a good predictor of the distribution of seven bird species in agricultural landscapes (mean AUC for the seven species = 0.74 for the radius 110m). Species richness of farmland and forest birds was satisfactorily predicted by the models (ρ = 0.55 and 0.49, respectively, for the radius 110m). The presence of the studied species and species richness metrics were better predicted at smaller scales (i.e. radii between 110 m and 310 m) within the range tested. These results have implications for bird population management in agricultural landscapes since better pinpointing the scale to predict species distributions will enhance targeting efforts to be made in terms of landscape management. •Surface areas of woods are good predictors of bird distribution.•Presence of bird species is influenced more by local than by broader context.•Pinpointing the scale to predict species distributions may help landscape management.