Oecologia

, Volume 167, Issue 4, pp 943–950 | Cite as

Experimental evidence for a novel mechanism driving variation in habitat quality in a food-caching bird

Population ecology - Original Paper

Abstract

Variation in habitat quality can have important consequences for fitness and population dynamics. For food-caching species, a critical determinant of habitat quality is normally the density of storable food, but it is also possible that quality is driven by the ability of habitats to preserve food items. The food-caching gray jay (Perisoreus canadensis) occupies year-round territories in the coniferous boreal and subalpine forests of North America, but does not use conifer seed crops as a source of food. Over the last 33 years, we found that the occupancy rate of territories in Algonquin Park (ON, Canada) has declined at a higher rate in territories with a lower proportion of conifers compared to those with a higher proportion. Individuals occupying territories with a low proportion of conifers were also less likely to successfully fledge young. Using chambers to simulate food caches, we conducted an experiment to examine the hypothesis that coniferous trees are better able to preserve the perishable food items stored in summer and fall than deciduous trees due to their antibacterial and antifungal properties. Over a 1–4 month exposure period, we found that mealworms, blueberries, and raisins all lost less weight when stored on spruce and pine trees compared to deciduous and other coniferous trees. Our results indicate a novel mechanism to explain how habitat quality may influence the fitness and population dynamics of food-caching animals, and has important implications for understanding range limits for boreal breeding animals.

Keywords

Gray jays Perisoreuscanadensis Population decline Territory occupancy GIS 

Notes

Acknowledgments

We thank the dozens of volunteers who helped with nest finding and banding adult and nestling jays over the last 40 years. We also particularly thank P. Palbiski and M. Brown for help with the design and construction of the storage chambers, and S. Strickland, M. Strickland, R. Tozer, and the late M. Pageot for help with chamber placement and recovery.

Conflict of interest

The authors declare that they have no conflict of interest.

References

  1. Brown JL (1969) The buffer effect and productivity in tit populations. Am Nat 103:347–354Google Scholar
  2. Bryant JP, Kuropat PJ (1980) Selection of winter forage by subarctic browsing vertebrates: the role of plant chemistry. Ann Rev Ecol Syst 11:261–285CrossRefGoogle Scholar
  3. Bryant JP, Chapin FS III, Klein DR (1983) Carbon/nutrient balance of boreal plants in relation to vertebrate herbivory. Oikos 40:357–368CrossRefGoogle Scholar
  4. Bryant JP, Kuropat PJ, Reichardt PB, Clausen TP (1991) Controls over allocation of resources by woody plants to chemical antiherbivore defense. In: Palo T, Robbins C (eds) Plant defenses against mammalian herbivory. CRC, Boca Raton, pp 83–102Google Scholar
  5. Burke DM, Nol E (1998) Influence of food abundance, nest-site habitat, and forest fragmentation on breeding ovenbirds. Auk 115:96–104Google Scholar
  6. Calsbeek R, Sinervo B (2002) An experimental test of the ideal despotic distribution. J Anim Ecol 71:513–523CrossRefGoogle Scholar
  7. Christe P, Oppliger A, Bancals F, Castella G, Chapuisat M (2003) Evidence for collective medication in ants. Ecol Lett 6:19–22CrossRefGoogle Scholar
  8. Clark L, Mason JR (1985) Use of nest material as insecticidal and anti-pathogenic agents by the European starling. Oecologia 67:169–176CrossRefGoogle Scholar
  9. Clark L, Mason JR (1988) Effect of biologically active plants used as nest material and the derived benefit to starling nestlings. Oecologia 77:174–180CrossRefGoogle Scholar
  10. Coley PD, Bryant JP, Chapin FS III (1985) Resource availability and plant antiherbivore defense. Science 230:895–899PubMedCrossRefGoogle Scholar
  11. deSmith MJ, Goodchild MF, Longley PA (2009) Geospatial analysis (online edition). Troubador, Leicester. http://www.spatialanalysisonline.com/output/
  12. Dow DD (1965) The role of saliva in food storage by the gray jay. Auk 82:139–154Google Scholar
  13. Forest Resources of Ontario (2006). Available at http://www.mnr.gov.on.ca/en/Business/Forests/2ColumnSubPage/199556.html
  14. Fowells HA (1965) Sylvics of forest trees of the United States (Agriculture Handbook no. 271). US Department of Agriculture, Washington, DCGoogle Scholar
  15. Fretwell SD (1972) Populations in a seasonal environment. Princeton University Press, PrincetonGoogle Scholar
  16. Gunnarsson TG, Gill JA, Newton J, Potts PM, Sutherland WJ (2005) Seasonal matching of habitat quality and fitness in a migratory bird. Proc R Soc Lond B 272:2319–2323CrossRefGoogle Scholar
  17. Iwamoto T, Dunbar RIM (1983) Thermoregulation, habitat quality and the behavioural ecology of Gelada baboons. J Anim Ecol 52:357–366CrossRefGoogle Scholar
  18. Langenheim JH (2003) Plant resins: chemistry, evolution, ecology, ethnobotany. Timber, Portland, p 586Google Scholar
  19. Lurz PWW, Garson PJ, Wauters LA (1997) Effects of temporal and spatial variation in habitat quality on red squirrel dispersal behaviour. Anim Behav 54:427–435PubMedCrossRefGoogle Scholar
  20. McKenney DW, Pedlar JH, Lawrence K, Campbell K, Hutchinson MF (2007) Potential impacts of climate change on the distribution of North American trees. Bioscience 57:939–948CrossRefGoogle Scholar
  21. Moilanen A, Hanski I (1998) Metapopulation dynamics: effects of habitat quality and landscape structure. Ecology 79:2503–2515CrossRefGoogle Scholar
  22. Newton I (1972) Finches. William Collins Sons & Co, LondonGoogle Scholar
  23. Olsson O, Brown JS, Smith HG (2002) Long- and short-term state-dependent foraging under predation risk: an indication of habitat quality. Anim Behav 63:981–989CrossRefGoogle Scholar
  24. Ontario Ministry of Natural Resources (2010) Forest resource inventory. Available from http://www.mnr.gov.on.ca/en/Business/Forests/2ColumnSubPage/199556.html
  25. Peterson JMC (1988) Gray jay. In: Andrle RF, Carroll JR (eds) The atlas of breeding birds in New York State. Cornell Univ Press, IthacaGoogle Scholar
  26. Pulliam HR (1988) Sources, sinks, and population regulation. Am Nat 132:652–661CrossRefGoogle Scholar
  27. Rodenhouse NL, Sillett TS, Doran PJ, Holmes RT (2003) Multiple density-dependence mechanisms regulate a migratory bird population during the breeding season. Proc R Soc Lond B 270:2105–2110CrossRefGoogle Scholar
  28. Sibley DA (2000) The Sibley guide to birds. Alfred A. Knopf, New YorkGoogle Scholar
  29. Sjoberg K, Poysa H, Elmberg J, Nummi P (2000) Response of mallard ducklings to variation in habitat quality: an experiment of food limitation. Ecology 81:329–335Google Scholar
  30. Smith RH (1963) Toxicity of pine resin vapors to three species of Dendroctonus bark beetles. J Econ Entomol 56:827–831Google Scholar
  31. Strickland D (1969) Écologie, comportement social et nidification due Geai Gris (Perisoreus canadensis) (M.Sc. thesis). Unviversity of Montréal, MontréalGoogle Scholar
  32. Strickland D, Ouellet H (1993) Gray jay. In: Poole A, Stettenheim P, Gill F (eds) The birds of North America, vol 40. Philadelphia Acad Nat Sci/American Ornithologists Union, Philadelphia/Washington, DCGoogle Scholar
  33. Strickland D, Waite TA (2001) Does initial suppression of allofeeding in small jays help to conceal their nests? Can J Zool 79:2128–2146CrossRefGoogle Scholar
  34. Strong AM, Sherry TW (2000) Habitat-specific effects of food abundance on the condition of ovenbirds wintering in Jamaica. J Anim Ecol 69:883–895Google Scholar
  35. Sutherland WJ (1998) The effect of local change in habitat quality on populations of migratory species. J Applied Ecol 35:418–421CrossRefGoogle Scholar
  36. Tremblay I, Thomas DW, Lambrechts MM, Blondel J, Perret P (2003) Variation in blue tit breeding performance across gradients in habitat richness. Ecology 84:3033–3043Google Scholar
  37. Vander Wall SB (1990) Food hoarding in animals. University of Chicago Press, ChicagoGoogle Scholar
  38. Waite TA, Strickland D (2006) Climate change and the demographic demise of a hoarding bird living on the edge. Proc R Soc Lond B 273:2809–2813CrossRefGoogle Scholar
  39. Weiss SB, Murphy DD, White RR (1988) Sun, slope, and butterflies: topographic determinants of habitat quality for Euphydryas editha. Ecology 69:1486–1496Google Scholar

Copyright information

© Springer-Verlag 2011

Authors and Affiliations

  • Dan Strickland
    • 1
  • Brian Kielstra
    • 2
  • D. Ryan Norris
    • 3
  1. 1.DwightCanada
  2. 2.Department of GeographyUniversity of GuelphGuelphCanada
  3. 3.Department of Integrative BiologyUniversity of GuelphGuelphCanada

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