
FD, docent i zoologi, specialforskare
Aronia, Kustlandsteamet
Raseborgsvägen 9
FI-10600 Ekenäs
Finland
+358 (0)19 224 8414
markus.ost@novia.fi
www.novia.fi/ejder
Jag är en beteendeekolog som också är intresserad av evolutions- och populationsbiologi. Mitt långvariga intresse har varit att förstå det samarbete och konflikter som ingår i sjöfåglars sociala ungomvårdnad, som omfattar allt från de godmodiga ådornas sammanslagna 'barnträdgårdar' till de argsinta islandsknipshonornas kamp om den sammanslagna kullen, där vinnaren tar allt.
Huvudteman för min nuvarande och kommande forskning kan sammanfattas så här:
Du kan också ta en titt på vad jag sysslade med innan 2008 på BEU:s (Bird Ecology Unit) hemsidor vid Helsingfors universitet.
Ekroos, J., Fox, A. D., Christensen, T. K., Petersen, I. K., Kilpi, M., Jónsson, J. E., Green, M., Laursen, K., Cervencl, A., Boer, P., Nilsson, L., Meissner, W., Garthe, S. & Öst, M. 2012: Declines amongst breeding eider Somateria mollissima numbers in the Baltic/Wadden Sea flyway. Ornis Fennica, in press.
Jaatinen, K., Öst, M., Gienapp, P. & Merilä, J. 2011: Differential responses to related hosts by nesting and non-nesting parasites in a brood-parasitic duck. Molecular Ecology, in press. Abstract
Jaatinen, K. & Öst, M. 2011: Experience attracts: the role of age in the formation of cooperative brood-rearing coalitions in eiders. Animal Behaviour 81: 1289-1294. Abstract
Öst, M. & Tierala, T. 2011: Synchronized vigilance while feeding in common eider brood-rearing coalitions. Behavioral Ecology 22: 378-384. Abstract PDF
Öst, M., Lehikonen, A., Jaatinen, K. & Kilpi, M. 2011: Causes and consequences of fine-scale breeding dispersal in a female-philopatric species. Oecologia 166: 327-336. Abstract
Jaatinen, K., Öst, M. & Lehikoinen, A. 2011: Adult predation risk drives shifts in parental care strategies: a long-term study. Journal of Animal Ecology 80: 49-56. Abstract PDF
Öst, M. & Steele, B. B. 2010: Age-specific nest-site preference and success in eiders. Oecologia 162: 59-69. Abstract
Lehikoinen, A., Jaatinen, K. & Öst, M. 2010: Do female ornaments indicate quality in eider ducks? Biology Letters 6: 225-228 Abstract
Jaatinen, K., Jaari, S., O'Hara, R. B., Öst,M. & Merilä, J. 2009: Relatedness and spatial proximity as determinants of host-parasite interactions in the brood parasitic Barrow's goldeneye (Bucephala islandica). Molecular Ecology 18: 2713-2721. Abstract PDF
Jaatinen, K., Öst, M., Waldeck, P. & Andersson, M. 2009: Clutch desertion in Barrow's goldeneyes (Bucephala islandica) - effects of non-natal eggs, the environment and host female characteristics. Annales Zooogici Fennici 46: 350-360. Abstract
Engström-Öst, J., Öst, M. & Yli-Renko, M. 2009: Balancing algal toxicity and turbidity with predation risk in the three-spined stickleback. Journal of Experimental Marine Biology and Ecology 377: 54-59. Abstract
Öst, M., Wickman, M., Matulionis, E. & Steele, B. 2008: Habitat-specific clutch size and cost of incubation in eiders reconsidered. Oecologia 158: 205-216. Abstract
Lehikoinen, A., Christensen, T. K., Öst, M., Kilpi, M., Saurola, P. & Vattulainen, A. 2008: Large-scale change in the sex ratio of a declining eider population.Wildlife Biology 14: 288-301. Abstract PDF
Lehikoinen, A., Öst , M., Hollmén, T. & Kilpi, M. 2008: Does sex-specific duckling mortality contribute to male bias in adult common eiders? Condor 110: 574-578. Abstract
Öst, M., Smith, B. D & Kilpi, M. 2008: Social and maternal factors affecting duckling survival in eiders Somateria mollissima. Journal of Animal Ecology 77: 315-325. Abstract PDF
Waldeck, P., Andersson, M., Kilpi, M. & Öst, M. 2008: Spatial relatedness and brood parasitism in a female-philopatric bird population. Behavioral Ecology 19: 67-73. Abstract PDF
Öst, M., Clark, C. W., Kilpi, M. & Ydenberg, R. C. 2007: Parental effort and reproductive skew in coalitions of brood-rearing female common eiders. American Naturalist 169: 73-86. Abstract Press Release PDF
Öst, M., Jaatinen, K. & Steele, B. 2007: Aggressive females seize central positions and show increased vigilance in brood-rearing coalitions of eiders. Animal Behaviour 73: 239-247. Abstract
Steele, B., Lehikoinen, A., Öst, M. & Kilpi, M. 2007: The cost of mate guarding in the common eider. Ornis Fennica 84: 49-56. PDF
Lehikoinen, A., Kilpi, M. & Öst, M. 2006: Winter climate affects subsequent breeding success of common eiders.Global Change Biology 12: 1355-1365. Abstract PDF
Öst, M., Vitikainen, E., Waldeck, P., Sundström, L., Lindström, K., Hollmén, T., Franson, J. C. & Kilpi, M. 2005: Eider females form non-kin brood-rearing coalitions. Molecular Ecology 14: 3903-3908. Abstract PDF
Waldeck, P., Kilpi, M., Öst, M. & Andersson, M. 2004: Brood parasitism in a population of common eider (Somateria mollissima). Behaviour 141: 725-739. Abstract
Kilpi, M. & Öst, M. 2004: Haahkan lastentarhat: kuka hoitaa ja miksi. Jahtimailla: Riistalinnut (eds. P. Nummi & V.-M. Väänänen), p. 25. Weilin+Göös, Helsinki.
Öst, M. & Bäck, A. 2003: Spatial structure and parental aggression in eider broods. Animal Behaviour 66: 1069-1075. Abstract
Öst, M., Ydenberg, R., Kilpi, M. & Lindström, K. 2003: Condition and coalition formation by brood rearing common eider females. Behavioral Ecology 14: 311-317. Abstract PDF
Öst, M., Ydenberg, R., Lindström, K. & Kilpi, M. 2003: Body condition and the grouping behavior of brood-caring female common eiders (Somateria mollissima). Behavioral Ecology and Sociobiology 54: 451-457. Abstract
Kilpi, M., Öst, M., Lehikoinen, A. & Vattulainen, A. 2003: Male sex bias in eiders Somateria mollissima during spring migration into the Gulf of Finland. Ornis Fennica 80: 137-142. PDF
Öst, M., Mantila, L. & Kilpi, M. 2002: Shared care provides time-budgeting advantages for female eiders. Animal Behaviour 64: 223-231. Abstract
Hario, M. & Öst, M. 2002: Does heavy investment in foraging implicate low food acquisition for female common eiders Somateria mollissima? Ornis Fennica 79: 111-120. Abstract
Kilpi, M. & Öst, M. 2002: Merikotkan vaikutus Tvärminnen haahkakantaan. - Suomen Riista 48: 27-33.
Kilpi, M., Öst, M., Lindström, K. & Rita, H. 2001: Female characteristics and parental care mode in the crèching system of eiders, Somateria mollissima. Animal Behaviour 62: 527-534. Abstract
Öst, M. & Kilpi, M. 2000: Eider females and broods from neighboring colonies use segregated local feeding areas. Waterbirds 23: 24-32. Abstract
Öst, M. 2000: Feeding constraints and parental care in female eiders. Ph.D. thesis, University of HelsinkiE-thesis.
Öst, M. 1999: Within-season and between-year variation in the structure of common eider broods. Condor 101: 598-606. Abstract
Öst, M. & Kilpi, M. 1999: Parental care influences the feeding behaviour of female eiders Somateria mollissima. Annales Zoologici Fennici 36: 195-204. Abstract
Hario, M., Hollmén, T., Kilpi, M., Lehtonen, J. T., Mustonen, O., Westerbom, M. & Öst, M. 1999: Riittääkö haahkalle ravintoa Suomenlahdella? Suomen Riista 45: 34-43.
Öst, M. & Kilpi, M. 1998: Blue mussels in the Baltic: good news for foraging eiders, Somateria mollissima. Wildlife Biology 4: 81-89. Abstract PDF
Kilpi, M. & Öst, M. 1998: Reduced availability of refuse and breeding output in a herring gull (Larus argentatus) colony. Annales Zoologici Fennici 35: 37-42. Abstract
Öst, M. & Kilpi, M. 1997: A recent change in size distribution of blue mussels (Mytilus edulis) in the western part of the Gulf of Finland. Annales Zoologici Fennici 34: 31-36. Abstract
