Geographic patterns of predator niche breadth and prey species richness

Abstract

Most dietary studies on predator species available in the literature are based on single populations, with no meta-analysis across populations in distinct areas of their range. Here, we performed a systematic review of the available data on the food habits of barn owl (Tyto alba) across Italy, collected during the last 40 years in relation to the modeled patterns of richness of small mammal communities. The overall dataset came from 212 sites, with multiple surveys for some sites, and a total of 279 samples. There was a significant effect of sample size on niche breadth in each site. There was a significant difference in terms of dietary breadth among six distinct areas of Italy, with diet breadth being lower in Sardinia and higher in Latium-Abruzzi, Tuscany, and North-eastern Italy. Potential small mammal prey diversity was significantly different across distinct study sites, with Apulia and Sardinia having lower diversity than the rest of the sites. Potential small mammal prey diversity affected the niche breadth per site. Overall, the plasticity of the food niche breadth of the barn owl reflected not only local conditions but also more general distribution patterns of small mammal communities.

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References

  1. Amori G, Cipolloni A, Di Russo C (1991) Small mammals in the pellets of the barn owl in the central Apennines. Suppl Ric Biol Selv 16:533–537

    Google Scholar 

  2. Blasi C, Boitani L, La Posta S, Manes F, Marchetti M (2007) Biodiversity in Italy. Palombi Editore, Rome

    Google Scholar 

  3. Bontzorros VA, Pieris SJ, Vlachos CG, Bakaloudis DE (2005) The diet of barn owl in the agricultural landscapes of central Greece. Folia Zool 54:99–110

    Google Scholar 

  4. Brichetti P, Fracasso G (2006) Ornitologia italiana. Stercorariidae-Caprimulgidae, vol 3. Alberto Perdisa Editore, Bologna, pp 316–324

    Google Scholar 

  5. Contoli L, Aloise G, Filippucci MG (1988a) Sulla diversificazione trofica di barbagianni Tyto alba e civetta Athene noctua in rapporto al livello diagnostico delle prede. Avocetta 12:21–30

    Google Scholar 

  6. Contoli L, Aloise G, Filippucci MG (1988b) Sulla nicchia trofica di Tyto alba ed Athene noctua nell’Isola d’Elba (Toscana) in rapporto all’Italia tirrenica. Bull Ecol 19:367–373

    Google Scholar 

  7. Glue DE (2009) Prey taken by the barn owl in England and Wales. Bird Study 14:169–183

    Article  Google Scholar 

  8. Green RF (2006) A simpler, more general method of finding the optimal foraging strategy for Bayesian birds. Oikos 112:274–284

    Article  Google Scholar 

  9. Lekunze LM, Ezealor AU, Aken’ova T (2001) Prey groups in the pellets of the barn owl Tyto alba (Scopoli) in the Nigerian savanna. Afr J Ecol 39:38–44

    Article  Google Scholar 

  10. Luiselli L (2006) Broad geographic, taxonomic and ecological patterns of interpopulation variation in the dietary habits of snakes. Web Ecol 6:2–16

    Article  Google Scholar 

  11. Luiselli L, Migliazza R, Rotondo C, Amori G (2014) Macro-ecological patterns of a prey–predator system: rodents and snakes in West and central Africa. Trop Zool 27:1–8

    Article  Google Scholar 

  12. Magurran AE (1988) Ecological diversity and its measurement. Princeton University Press, Princeton

    Google Scholar 

  13. Maiorano L, Amori G, Capula M, Falcucci A, Masi M, Montemaggiori A, Pottier J, Psomas A, Rondinini C, Russo D, Zimmermann NE, Boitani L, Guisan A (2013) Threats from climate change to terrestrial vertebrate hotspots in Europe. PLoS ONE 8:e74989. doi:10.1371/journal.pone.0074989

    PubMed  CAS  PubMed Central  Article  Google Scholar 

  14. Mazzotti S, Davi L (2003) Dinamiche stagionali della nicchia trofica del barbagianni, Tyto alba, in Pianura Padana. Ann Mus Civ St Nat Ferrara 6:67–77

    Google Scholar 

  15. Olsson O, Brown JS (2006) The foraging benefits of information and the penalty of ignorance. Oikos 112:260–273

    Article  Google Scholar 

  16. Prete S, Battisti C, Marini F, Ciucci P (2012) Applying abundance/biomass comparisons on a small mammal assemblage from barn owl (Tyto alba) pellets (Mount Soratte, central Italy): a cautionary note. Rend Lincei 23:349–354

    Article  Google Scholar 

  17. Pullin AS, Stewart BG (2006) Guidelines for systematic review in conservation and environmental management. Conserv Biol 20:1647–1656

    PubMed  Article  Google Scholar 

  18. Ray ZC, Sunquist ME (2001) Trophic relations in a community of African rainforest carnivores. Oecologia 127:395–408

    Article  Google Scholar 

  19. Schoener TW (1971) Theory of feeding strategies. Annu Rev Ecol Syst 11:369–404

    Article  Google Scholar 

  20. Stephens DW, Krebs JR (1986) Foraging theory. Princeton University Press, Princeton

    Google Scholar 

  21. Taylor I (2004) Barn owls: predator–prey relationships and conservation. Cambridge University Press, London

    Google Scholar 

  22. Tomaselli R, Balduzzi A, Filipello S (1973) Carta bioclimatica d’Italia. La Vegetazione forestale d’Italia, Ministero Agricoltura e Foreste, Collana Verde, Rome, Italy

  23. Torre I (2001) Tendencias geográficas en la dieta de la lechuza común (Tyto alba, Scopoli 1769) e interpretación de los patrones de riqueza de las comunidades de micromamiferos: una nueva aproximación analítica. Galemys 13:55–65

    Google Scholar 

  24. Varuzza P, Capizzi D, Santini L, Apollonio M (2001) Barn owl Tyto alba predation on small mammals in relation to the Mediterranean environment (Pisa Province, Italy). Acta Ornithol 36:153–160

    Article  Google Scholar 

  25. Yom-Tov Y, Wool D (1997) Do the contents of barn owl pellets accurately represent the proportion of prey species in the field? Condor 99:972–976

    Article  Google Scholar 

Download references

Acknowledgments

We thank Dr. F. Rocchi for useful discussion on the investigated issues. This study was partially supported by funds provided from NextData Project (WP1.7). Comments by three anonymous reviewers improved the submitted drafts.

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Correspondence to Luca Luiselli.

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Milana, G., Lai, M., Maiorano, L. et al. Geographic patterns of predator niche breadth and prey species richness. Ecol Res 31, 111–115 (2016). https://doi.org/10.1007/s11284-015-1319-6

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Keywords

  • Barn owl
  • Pellets
  • Niche breadth
  • Small mammals