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European Journal of Wildlife Research

, Volume 60, Issue 2, pp 201–212 | Cite as

Experimental harvest reveals the importance of territoriality in limiting the breeding population of Svalbard rock ptarmigan

  • Å. Ø. Pedersen
  • E. M. Soininen
  • S. Unander
  • M. H. Willebrand
  • E. Fuglei
Original Paper

Abstract

The Svalbard rock ptarmigan (Lagopus muta hyperborea) is an endemic subspecies of rock ptarmigan inhabiting the high Arctic archipelagos of Svalbard and Franz Josefs Land. This ptarmigan species exists at low population densities, with little interannual variations in population numbers, and limited habitat for breeding with less than 5 % of the land area in Svalbard constituting medium to high quality breeding habitat. Unander and Steen (1985) hypothesized, based on a descriptive study, that territories sufficiently attractive for breeding could be a limiting factor of the Svalbard rock ptarmigan population. Here, we use experimental data from a 3-year removal experiment (1984–1986) to test their hypothesis by comparing breeding density, demography (sex and age ratios) and body mass of birds between experimental removal plots and control locations. We found evidence of surplus birds by showing that both sexes of Svalbard rock ptarmigan replaced quickly in vacant territories after removal of the resident birds, and that breeding densities were similar for the experimental and control populations. Replaced males in the breeding population weighed less than males in the initial breeding population and tended to be younger. Experimental harvest during the preceding spring had no effect on male body mass, population sex ratio or the proportion of juvenile males in the pre-breeding population the following spring. The documented surplus of male and female Svalbard rock ptarmigan and a lack of impact on breeding densities from removal of birds leave a proportion available for harvest.

Keywords

Lagopus muta hyperborea Management Removal experiment Surplus birds 

Notes

Acknowledgments

Funding for publishing the old experimental Svalbard rock ptarmigan data (1984–1986) was provided by the Svalbard Environmental Fund, the Norwegian Polar Institute and Hedmark University College, Department of Forestry and Wildlife Management. The field work in the Brøgger peninsula in 1984–1986 was funded by the Norwegian Polar Institute. Permissions for the removal experiment (1984–1986) and capturing of ptarmigans were obtained from the Governor of Svalbard. The study complied with the current regulations in the 1980s regarding mark and re-capture of wildlife in Svalbard. We thank Rolf A. Ims, Tomas Willebrand, Brett K. Sandercock and one anonymous reviewer for valuable contributions to the manuscript, Oddveig Øien Ørvoll for graphical assistance and Anders Skoglund for converting GIS files.

References

  1. Bates D, Maechler M, Dai B (2008) Lme4: linear mixed-effects models using s4 classes 585 (version 0.999375-37) [computer software].Google Scholar
  2. Bendell JF, King DG, Mossop DH (1972) Removal and repopulation of blue grouse in a declining population. J Wildlife Manage 36(4):1153–1165CrossRefGoogle Scholar
  3. Bergerud AT, Peters SS, McGrath R (1963) Determining sex and age of willow ptarmigan in New Foundland. J Wildlife Manage 25:337–339Google Scholar
  4. Bergerud AT, Mossop DH, Myrberget S (1985) A critique of the mechanics of annual changes in ptarmigan numbers. Can J Zool 63:2240–2248CrossRefGoogle Scholar
  5. Blom R, Myrberget S (1978) Experiments on shooting territorial Willow Grouse Lagopus lagopus. Cinclus 1:29–33Google Scholar
  6. Brittas R (1988) Nutrition and reproduction of the willow grouse Lagopus-lagopus in central sweden. Ornis Scand 19(1):49–57CrossRefGoogle Scholar
  7. Brøseth H, Nilsen EB, Pedersen HC (2012) Temporal quota corrections based on timing of harvest in a small game species. European Journal of Wildlife Research 58(8):797–802CrossRefGoogle Scholar
  8. Burnham KP, Anderson DR (2002) Model selection and multimodel inference – a practical information-theoretic approach. Springer-Verlag, New YorkGoogle Scholar
  9. Chapman DS, Cornell SJ, Kunin WE (2009) Interactions between harvesting, noise and territoriality in a model of red grouse population cycles. J Anim Ecol 78(2):476–484PubMedCrossRefGoogle Scholar
  10. Cotter R (1999) The reproductive biology of rock ptarmigan (Lagopus mutus) in the central Canadian Arctic. Arctic 52:23–32CrossRefGoogle Scholar
  11. Darwin C (1871) The descent of man and selection in relation to sex. John Murray, LondonCrossRefGoogle Scholar
  12. Del Hoyo J, Elliott A, Sargatal J (eds) (1994) Handbook of the birds of the world. Lynx Ediciones, BarcelonaGoogle Scholar
  13. Ellison LN (1991) Shooting and compensatory mortality in tyetraonids. Ornis Scand 22(3):229–240CrossRefGoogle Scholar
  14. Elvebakk A (1999) Bioclimatic delimitation and subdivision of the Arctic. In: Nordal I, Razzhivin VY (eds) The species concept in the high north—a panarctic flora initiative. The Norwegian Academy of Science and Letters, Oslo, pp 81–112Google Scholar
  15. Favaron M, Scherini GC, Preatoni D, Tosi G, Wauters LA (2006) Spacing behaviour and habitat use of rock ptarmigan (Lagopus mutus) at low density in the Italian Alps. J Ornithol 147(4):618–628CrossRefGoogle Scholar
  16. Fuglei E, Pedersen ÅØ (2011) Svalbardrypenes trekkruter til vinterområdene. Svalbardrypenes trekkruter til vinterområdene. Sluttrapport til Svalbards Miljøvernfond (in Norwegian)Google Scholar
  17. Fuglei E, Pedersen ÅØ (2013) Høsting av Svalbardrype—gamle data med potensiale for ny innsikt. Sluttrapport til Svalbards Miljøvernfond (in Norwegian)Google Scholar
  18. Gardarsson A (1977) Food ecology and spacing behaviour of rock ptarmigan (Lagopus mutus) in Iceland. PhD thesis, University of California, BerkleyGoogle Scholar
  19. Governor of Svalbard (2012). www.sysselmannen.no/. Accessed Jan 2013
  20. Grammeltvedt RS, Steen JB (1978) Fat deposition in Spitzbergen Ptarmigan. Arctic 31:496–498CrossRefGoogle Scholar
  21. Gudmundsson F (1972) Grit as an indicator of overseas origin of certain birds occurring in Iceland. Ibis 114:582Google Scholar
  22. Hannon SJ (1983) Spacing and breeding density of willow ptarmigan in response to an experimental alteration of sex-ratio. J Anim Ecol 52:807–820CrossRefGoogle Scholar
  23. Hannon SJ (1986) Intrinsic mechanisms and population regulation in grouse—a critique (1986) Proc Int Ornithol Congress.Google Scholar
  24. Hansen BB, Henriksen S, Aanes R, Saether BE (2007) Ungulate impact on vegetation in a two-level trophic system. Polar Biology 30:549–558CrossRefGoogle Scholar
  25. Hansen BB, Grøtan V, Aanes R, Sæther B-E, Stien A, Fuglei E, Ims RA, Yoccoz NG, Pedersen ÅØ (2013) Climate events synchronize the dynamics of a resident vertebrate community in the high Arctic. Science 339:313–315PubMedCrossRefGoogle Scholar
  26. Höglund N (1952) Förbundets viltmärkningar. Svenska Jegerforbund, Meddelelser 18:1–127 (in Swedish)Google Scholar
  27. Holmstad PR, Holstad O, Karbol G, Revhaug JO, Schei E, Vandvik V, Skorping A (2004) Parasite tags in ecological studies of terrestrial hosts: a study on ptarmigan (Lagopus spp.) dispersal. Ornis Fennica 81:128–136Google Scholar
  28. Jenkins D, Watson A, Miller GR (1963) Population studies on red grouse, Lagopus lagopus scoticus (lath) in Northeast Scotland. J Anim Ecol 32:317–376CrossRefGoogle Scholar
  29. Johansen BE, Karlsen SR, Tommervik H (2012) Vegetation mapping of Svalbard utilising Landsat TM/ETM plus data. Polar Rec 48:47–63CrossRefGoogle Scholar
  30. Kokko H (2001) Optimal and suboptimal use of compensatory responses to harvesting: timing of hunting as an example. Wildlife Biol 7:141–150Google Scholar
  31. Løvenskiold HL (1964) Avifauna Svalbardensis. Norsk Polarinstitutt Skrifter 129, Tromsø, NorwayGoogle Scholar
  32. Magnússon KG, Brynjarsdottir J, Nilesen OK (2004) Population cycles in rock ptarmigan Lagopus muta: modelling and parameter estimation. Icelandic Institute of Natural History, ReykjavikGoogle Scholar
  33. Martin K, Hannon SJ (1987) Natal philopatry and recruitment of willow ptarmigan in north central and Northwestern Canada. Oecologia 71(4):518–524CrossRefGoogle Scholar
  34. McGowan JD (1975) Effect of autumn and spring hunting on ptarmigan population trends. J Wildlife Manage 39(3):491–495CrossRefGoogle Scholar
  35. Myrberget S (1985) Is hunting mortality compensated for in grouse populations with special reference to willow grouse? Proceedings of the International Union of Game Biologists 12:329–336Google Scholar
  36. Nagelkerke NJD (1991) A Note on a General Definition of the Coefficient of Determination. Biometrika 78:691–692Google Scholar
  37. Newton I (1992) Experiments on the limitation of bird numbers by territorial behavior. Biol Rev Camb Philos 67:129–173. doi: 10.1111/j.1469-185X.1992.tb01017.x CrossRefGoogle Scholar
  38. Nielsen OK (1999) Gyrfalcon predation on ptarmigan: numerical and functional responses. Journal of Animal Ecology 68:1034–1050CrossRefGoogle Scholar
  39. Parker H, Ottesen H, Knudsen E (1985) Age determination in Svalbard ptarmigan Lagopus mutus hyperboreus. Polar Research 3:125–126CrossRefGoogle Scholar
  40. Pedersen HC (1984) Territory size, mating status, and individual survival of males in a fluctuating population of willow ptarmigan. Ornis Scand 15:197–203CrossRefGoogle Scholar
  41. Pedersen HC (1988) Territorial behaviour and breeding numbers in Norwegian willow ptarmigan: a removal experiment. Ornis Scand 19:81–87CrossRefGoogle Scholar
  42. Pedersen ÅØ, Fuglei E, Jepsen JU (2012b) Habitatmodell for Svalbardrype—en storskala GIS-studie som viser fordeling av egnede hekkehabitater på sentrale deler av Svalbard. Sluttrapport til Svalbards Miljøfond (in Norwegian)Google Scholar
  43. Pedersen HC, Steen H, Kastdalen L, Broseth H, Ims RA, Svendsen W, Yoccoz NG (2004) Weak compensation of harvest despite strong density-dependent growth in willow ptarmigan. Proc Roy Soc B-Biol Sci 271:381–385CrossRefGoogle Scholar
  44. Pedersen ÅØ, Jepsen JU, Yoccoz NG, Fuglei E (2007) Ecological correlates of the distribution of territorial Svalbard rock ptarmigan (Lagopus muta hyperborea). Can J Zool 85(1):122–132CrossRefGoogle Scholar
  45. Pedersen ÅØ, Bårdsen BJ, Yoccoz NG, Lecomte N, Fuglei E (2012) Monitoring Svalbard rock ptarmigan: distance sampling and occupancy modeling. J Wildlife Manage 76:308–316CrossRefGoogle Scholar
  46. Péron G, Nicolai CA, Koons DN (2012) Demographic response to perturbations: the role of compensatory density dependence in a North American duck under varable harvest regulations and changing habitat. J Anim Ecol 81:960–969PubMedCrossRefGoogle Scholar
  47. Pinheiro J, Bates D, DebRoy S, Sarkar D (2013). R Development Core Team. nlme: linear and nonlinear mixed effects models. R package version 3.1-109Google Scholar
  48. Prestrud P (1992) Food-habits and observations of the hunting behavior of arctic foxes, alopex-lagopus, in svalbard. Canadian Field-Naturalist 106(2):225–236Google Scholar
  49. R Core Team (2012) R: A language and environment for statistical computing. R Foundation for Statistical Computing, Vienna, Austria. http://www.R-project.org/
  50. Robb LA, Martin K, Hannon SJ (1992) Spring body condition, fecundity and survival in female willow ptarmigan. J Anim Ecol 61:215–223. doi: 10.2307/5524 CrossRefGoogle Scholar
  51. Sandercock BK, Nilsen EB, Broseth H, Pedersen HC (2011) Is hunting mortality additive or compensatory to natural mortality? Effects of experimental harvest on the survival and cause-specific mortality of willow ptarmigan. J Anim Ecol 80:244–258PubMedCrossRefGoogle Scholar
  52. Schroeder MA (1986) The fall phase of dispersal in juvenile spruce grouse. Can J Zool 64:16–20CrossRefGoogle Scholar
  53. Sedinger JS, Herzog MP (2012) Harvest and dynamics of duck populations. J Wildl Manage 76:1108–1116CrossRefGoogle Scholar
  54. Sedinger JS, White GC, Espinosa S, Partee ET, Braun CE (2010) An approach to assessing compensatory versus additive harvest mortality: an example using Greater Sage-grouse Centrocercus urophasianus. J Wildl Manage 74:326–332CrossRefGoogle Scholar
  55. Small R, Rusch D (1989) The natal dispersal of Ruffed Grouse. The Auk 106(1):72–79Google Scholar
  56. Smith A, Willebrand T (1999) Mortality causes and survival rates of hunted and unhunted willow grouse. J Wildlife Manage 63:722–730CrossRefGoogle Scholar
  57. Steen JB, Unander S (1985) Breeding biology of the Svalbard rock ptarmigan Lagopus mutus hyperboreus. Ornis Scand 16:191–197CrossRefGoogle Scholar
  58. Storch I (2007a) Conservation status of grouse worldwide: an update. Wildlife Biol 13:5–12CrossRefGoogle Scholar
  59. Storch I (2007b) Grouse: status and conservation action plan 2006–2010. Gland, SwitzerlandGoogle Scholar
  60. Unander S, Steen JB (1985) Behaviour and social structure in Svalbard rock ptarmigan Lagopus mutus hyperboreus. Ornis Scand 16:198–204CrossRefGoogle Scholar
  61. Walker DA, Raynolds MK, Daniels FJA, Einarsson E, Elvebakk A, Gould WA, Katenin AE, Kholod SS, Markon CJ, Melnikov ES, Moskalenko NG, Talbot SS, Yurtsev BA, Team C (2005) The circumpolar Arctic vegetation map. J Veg Sci 16:267–282CrossRefGoogle Scholar
  62. Warren PK, Baines D (2002) Dispersal, survival and causes of mortality in black grouse Tetrao tetrix in northern England. Wildlife Biol 8(2):91–97Google Scholar
  63. Watson A (1965) A population study of ptarmigan (Lagopus-mutus) in Scotland. J Anim Ecol 34:135–172. doi: 10.2307/2373 CrossRefGoogle Scholar
  64. Watson A, Jenkins D (1968) Experiments on population control by territorial behaviour in red grouse. J Anim Ecol 37:595. doi: 10.2307/3077 CrossRefGoogle Scholar
  65. Watson A, Moss R (1987) The mechanics of annual changes in ptarmigan numbers. Can J Zool 65:1043–1047CrossRefGoogle Scholar
  66. Watson A, Moss R (2008) Grouse. The New Naturalist 107. Collins, LondonGoogle Scholar
  67. Watson A, Moss R, Rothery P (2000) Weather and synchrony in 10-year population cycles of rock ptarmigan and red grouse in Scotland. Ecology 81(8):2126–2136CrossRefGoogle Scholar
  68. Weeden RB (1972) Effects of hunting on Rock Ptarmigan along the Steese Highway. Wildlife Technical Bulletin, No 2 Alaska Dept Fish and GameGoogle Scholar
  69. Weeden RB, Theberge JD (1972) The dynamics of a fluctuating population of rock ptarmigan in Alaska. Proceedings of XV International Ornithological Congress:91–106Google Scholar
  70. Wiebe KL, Martin K (1998) Age-specific patterns of reproduction in white-tailed and willow ptarmigan Lagopus leucurus and L.lagopus. Ibis 140:14–24CrossRefGoogle Scholar
  71. Wilson S, Martin K, Hannon SJ. 2007. Nest survival patterns in willow ptarmigan: influence of time, nesting stage, and female characteristics. The Condor 109(2):377–388Google Scholar
  72. Wynne-Edwards VC (1962) Animal dispersion in relation top social behaviour. Oliver and Boyd, EdinburghGoogle Scholar
  73. Zuur AF, Ieno EN, Walker NJ, Saveliev AA, Smirth GM (2009) Mixed effect models and extensions in ecology with R. Springer, New YorkCrossRefGoogle Scholar
  74. Zwickel FC (1972) Removal and repopulation of blue grouse in an increasing population. J Wildlife Manage 36:1141–1152. doi: 10.2307/3799243 CrossRefGoogle Scholar
  75. Zwickel FC (1980) Surplus yearlings and the regulation of breeding density in blue grouse. Can J Zool 58:896–905CrossRefGoogle Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 2013

Authors and Affiliations

  • Å. Ø. Pedersen
    • 1
  • E. M. Soininen
    • 2
  • S. Unander
    • 3
  • M. H. Willebrand
    • 4
  • E. Fuglei
    • 1
  1. 1.Norwegian Polar InstituteFram CentreTromsøNorway
  2. 2.University of TromsøTromsøNorway
  3. 3.BirkelandNorway
  4. 4.Department of Forestry and Wildlife ManagementHedmark University CollegeElverumNorway

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