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References

  • Allen, S.G. (1988) Movements and Activity Patterns of Harbor Seals at the Point Reyes Peninsula, California. MSc Thesis, University of California, Berkeley.
  • Allen, S.G., Page, G.W., Ribic, C.A. (1984) The effect of disturbance on harbour seal haul out patterns at Bolinas Lagoon, California. Fishery Bulletin, 82, 493 500.
  • Anderson, S.S. & Fedak, M.A. (1987) The energetics of sexual success of grey seals and comparison with the costs of reproduction in other pinnipeds. Symposium of the Zoological Society of London, 57, 319 341.
  • Anonymous (1967) American Society of Mammalogists. Standard measurements of seals. Journal of Mammalogy, 48, 459 462.
  • Bergman, A. (1999) Health condition of the Baltic grey seal (Halichoerus grypus) during two decades. Gynaeological health improvement but increased prevalence of colonic ulcers. APMIS., 107, 270 282.
  • Bergman, A. & Olsson, M. (1986) Pathology of Baltic grey seal and ringed seal with special reference to adrenocortical hyperplasia: is environmental pollution the cause of a widely distributed disease syndrome? Finnish Game Research, 44, 47 62.
  • Bigg, M.A. (1969a) The harbour seal in British Columbia. Bulletin of the Fisheries Research Board of Canada, 172, 1 33.
  • Bigg, M.A. (1969b) Clines in the pupping season of the Harbour Seal, Phoca vitulina. Journal of the Fisheries Research Board of Canada, 26, 449 455.
  • Bjørge, A., Thompson, D., Hammond, P., Fedak, M., Bryant, E., Aarefjord, H., Roen, R., Olsen, M. (1995) Habitat use and diving behaviour of harbour seals in a coastal archipelago in Norway. Whales, seals, fish and man. International Symposium on the Biology of Marine Mammals in the North East Atlantic. Tromsø, Norway, 29 November–1 December 1994 (eds A.Schütte Blix, L.Walløe & Ø.Ulltang), pp. 211 223. Elsevier, Amsterdam.
  • Boness, D.J., Bowen, W.D., Oftedal, O.T. (1994) Evidence of a maternal foraging cycle resembling that of otariid seals in a small phocid, the harbour seal. Behavioral Ecology and Sociobiology, 34, 95 104.
  • Boulva, J. & McLaren, I.A. (1979) Biology of the harbour seal Phoca vitulina in eastern Canada. Bulletin of the Fisheries Research Board of Canada, 200, 1 24.
  • Brown, R.F. & Mate, B.R. (1983) Abundance, movements, and feeding habits of harbor seals, Phoca vitulina, at Netarts and Tillamook Bays, Oregon. Fishery Bulletin, 81, 291 301.
  • Drescher, H.E. (1979) Biologie, Ökologie und Schutz der Seehunde im Schleswigholsteinischen Wattenmeer. Beiträge zur Wildbiologie, Meldorff, 1, 1 73.
  • Grellier, K., Thompson, P.M., Corpe, H.M. (1996) The effect of weather conditions on harbour seal (Phoca vitulina) haul out behaviour in the Moray Firth, northeast Scotland. Canadian Journal of Zoology, 74, 1806 1811.
  • Hårding, K.C. & Härkönen, T. (1995) Estimating age at sexual maturity in crabeater seals Lobodon carcinophagus. Canadian Journal of Fisheries and Aquatic Sciences, 52, 2347 2352.
  • Härkönen, T. & Heide-Jørgensen, M.P. (1990) Comparative life histories of East Atlantic and other harbour seal populations. Ophelia, 32, 211 235.
  • Harwood, J. & Hall, A. (1990) Mass mortality in marine mammals: Its implications for population dynamics and energetics. TREE, 5, 254 257.
  • Heide-Jørgensen, M.-P. & Härkönen, T. (1988) Rebuilding seal stocks in the Kattegat-Skagerrak. Marine Mammal Science, 4, 231 246.
  • Heide-Jørgensen, M.-P. & Härkönen, T. (1992) Epizootiology of seal disease. Journal of Applied Ecology, 29, 99 107.
  • Heide-Jørgensen, M.P., Härkönen, T., Åberg. P. (1992) Long-term effects of epizootic in harbor seals in the Kattegat-Skagerrak and adjacent areas. Ambio, 21, 511 516.
  • Helle, E. (1980) Lowered reproductive capacity in female ringed seals (Pusa hispida) in the Bothnian Bay, nothern Baltic Sea, with special reference to uterine occlusions. Annales Zoologica Fennici, 17, 147 158.
  • Hiby, A.R. (1994). Abundance estimates for grey seals in summer based on photo-identification. Grey seals in the North Sea and their interactions with fisheries. Final Report to the Ministery of Agriculture, Fisheries and Food Under Contract MF 0503 (eds P.S.Hammond & M.F.Fedak), pp. 5 22. Sea Mammal Research Unit, Cambridge.
  • Kovacs, K.M., Jonas, K.M., Welke, S.E. (1990) Sex and age segregation by Phoca vitulina concolor at haul out sites during the breeding season in the Passamaquoddy Bay region, New Brunswick. Marine Mammal Science, 6, 204 214.
  • McLaren, I.A. & Smith, T. (1985). Population ecology of seals: retrospective and prospective views. Marine Mammal Science, 1, 54 83.
  • Nørgaard, N. (1996) Haul out behaviour, movements, foraging strategies and population estimates of harbour seals (Phoca vitulina) in the Danish Wadden Sea. PhD Thesis, University of Aarhus.
  • Pauli, B.D. & Terhune, J.M. (1987) Meteorological influences on harbour seal haul out. Aquatic Mammals, 13, 114 118.
  • Pitcher, K.W. & Calkins, D.G. (1979) Biology of the harbour seal, Phoca vitulina richardsi, in the Gulf of Alaska. Alaska Department of Fish and Game. 333 Raspberry Road, Anchorage, Alaska 99502.
  • Pitcher, K.W. & McAllister, D.C. (1981) Movements and haulout behavior of radio-tagged Harbor Seals Phoca vitulina. Canadian Field-Naturalist, 95, 292 297.
  • Reijnders, P.J.H. (1976) The harbour seal (Phoca vitulina) population in the Dutch Wadden Sea: size and composition. Netherland Journal of Sea Research, 10, 223 235.
  • Reijnders, P.J.H. (1978) Recruitment in the harbour seal (Phoca vitulina) population in the Dutch Wadden Sea. Netherland Journal of Sea Research, 12, 164 179.
  • Reijnders, P.J.H. (1992) Retrospective population analysis and related future management perspectives for the harbour seal Phoca vitulina in the Wadden Sea. Netherland Institute of Sea Research. Publication Series, 20, 193 197.
  • Ries, E.H., Hiby, A.R., Reijnders, P.J.H. (1998) Maximum likelihood population size estimation of harbour seals in the Dutch Wadden Sea based on a mark–recapture experiment. Journal of Applied Ecology, 35, 332 339.
  • Roffe, T.J. & Mate, B.R. (1984) Abundances and feeding habits of pinnipeds in Rouge River, Oregon. Journal of Wildlife Management, 48, 1262 1274.
  • Schneider, D.C. & Payne, P.M. (1983) Factors affecting haul-out of harbor seals at a site in southeastern Massachusetts. Journal of Mammalogy, 64, 305 520.
  • Smith. M.S.R. (1965) Seasonal movements of the Weddell seal in McMurdo Sound, Antarctica. Journal of Wildlife Management, 29, 464 470.
  • Summers, C.F. & Mountford, M.D. (1975) Counting the common seal. Nature (London), 253, 670 671.
  • Temte, J.L., Bigg, M.A., Wiig, O. (1991) Clines revisited: the timing in pupping in the harbour seal (Phoca vitulina). Journal of Zoology, London, 224, 617 632.
  • Thompson, P.M. (1989) Seasonal changes in the distribution and composition of common seal (Phoca vitulina) haul-out groups. Journal of Zoology, London, 217, 597 603.
  • Thompson, P.M., Fedak, M.A., McConnell, B.J., Nicholas, K.S. (1989) Seasonal and sex-related variation in the activity patterns of common seals (Phoca vitulina). Journal of Applied Ecology, 26, 521 535.
  • Thompson, P.M. & Miller, D. (1990) Summer foraging activity and movements of radio-tagged common seals (Phoca vitulina L.) in the Moray Firth, Scotland. Journal of Applied Ecology, 27, 492 501.
  • Thompson, P.M., Miller, D., Cooper, R., Hammond, P.S. (1994) Changes in the distribution and activity of female harbour seals during the breeding season: implications for their lactation strategy and mating patterns. Journal of Animal Ecology, 63, 24 30.
  • Thompson, P. & Rothery, P. (1987) Age and sex differences in the timing of moult in the common seal, Phoca vitulina. Journal of Zoology, London, 212, 597 603.
  • Thompson, P.M., Tollit, D.J., Wood, D., Corpe, H.M., Hammond, P.S., MacKay, A. (1997) Estimating harbour seal abundance and status in an estuarine habitat in north-east Scotland. Journal of Applied Ecology, 34, 43 52.
  • Vaughan, R.M. (1978) A study of common seals in the Wash. Mammal Review, 8, 25 34.
  • Watts, P. (1996) The diel hauling out cycle of harbour seals in an open marine environment: correlations and constraints. Journal of Zoology, London, 240, 175 200.
  • Wiig, Ø. & Øien, N. (1988) Recoveries of common seals Phoca vitulina L. tagged along the Norwegian coast. Fauna norwegica, Ser. A, 9, 51 52.
  • Wipper, E. (1974) Die ökologishen und patologishen Probleme beim Seehund (Phoca vitulina), An der Niedersächsischen Nordseeküste. Dissertation., München.
  • Wipper, E. (1975) Jahreszeitige Wanderungen bei Seehunden. Natur und Museum, 105 (346–350), 375 380.
  • Yochem, P.M., Stewart, B.S., DeLong, R.L., DeMaster, D.P. (1987) Diel haul-out patterns and site fidelity of harbour seals Phoca vitulina richardsi on San Miguel Island, California, in autumn. Marine Mammal Science, 3, 323 332.