Summary
When the model of exploitation ecosystems by Oksanenet al. (1981) is re-analysed, using similar consumer-victim differential equations, but allowing dispersal between habitats differing in primary productivity, the relation between trophic dynamics and primary productivity turns out to be strongly dependent on the abundance relationships between different habitat types. In habitat complexes where a relatively productive habitat abounds, exploitation tends to ‘spill over' to the barren habitat, whose trophic dynamics thus become to a high degree driven by the dynamics in the productive habitat and entirely different from the predictions of Oksanenet al. (1981). Conversely, in habitat complexes where the barren habitat overwhelmingly prevails, the ‘spillover exploitation’ becomes strongly diluted. Consequently, local trophic dynamics within both habitats will behave approximately as predicted by the model of Oksanenet al. (1981).
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References
Armstrong, R. A. (1979) Prey species replacement along a gradient of nutrient enrichment: a graphical approach.Ecology 60, 76–84.
Brauer, F. and Soudack, A. C. (1981) Constant rate-stocking of predator-prey systems.J. Anim. Ecol. 11, 1–14.
Bujalska, G. (1985) Regulation of female maturation inClethrionomys species, with special reference to an island population ofC. glareolus.Ann. Zool. Fennici 22, 331–42.
Caughley, G. and Lawton, J. H. (1981) Plant-herbivore systems. InTheoretical ecology: principles and applications. 2nd edn. (R. M. May, ed.) pp. 132–66. Blackwell Scientific Publications, Oxford.
Charnov, E. L. (1976) Optimal foraging: the marginal value theorem.Theor. Popul. Biol. 9, 124–36.
Erlinge, S. (1974) Distribution, territoriality and numbers of the weased,Mustela nivalis, in relation to prey abundance.Oikos 25, 308–14.
Erlinge, S. (1977) Spacing strategies in stoat,Mustela erminea. Oikos28, 32–42.
Fretwell, S. D. (1972)Populations in a seasonal environment. Princeton Univ. Press, Princeton, NJ.
Fretwell, S. D. (1977) The regulation of plant communities by food chains exploiting them.Perspect. Biol. and Medic. 20, 169–85.
Fretwell, S. D. (1987) Food chain dynamics: the central theory of ecology?Oikos 50, 291–301.
Fryxell, J. M., Greever, J. and Sinclair, A. R. E. (1988) Why are migratory ungulates so abundant?Amer. Natur. 131, 781–95.
Gjaerevoll, O. (1956) The plant communities of the Scandinavian alpine snow-beds.Kongelige Norske Videnskaps Sellskapets Skrifter 1956 (1), 1–405.
Hansson, L. and Henttonen, H. (1985) Regional differences in cyclicity and reproduction inClethrionomys species: are they related?Ann. Zool. Fennici 22, 277–88.
Hairston, N., Smith, F. and Slobodkin, L. (1960) Community structure, population control and competition.Amer. Natur. 94, 421–5.
Henttonen, H., Oksanen, T., Jortikka, A. and Haukisalmi, V. (1987) How much do weasels shape microtine cycles in the northern Fennoscandian taiga?Oikos 50, 353–65.
Holt, R. D. (1977) Predation, apparent competition, and the structure of prey communities.Theor. Popul. Biol. 12, 197–229.
Holt, R. D. (1984) Spatial heterogeneity, indirect interactions and the coexistence of prey species.Amer. Natur. 124, 377–406.
Holt, R. D. (1985) Population dynamics of two-patch environments: some anomalous consequences of an optimal habitat distribution.Theor. Popul. Biol. 28, 181–208.
Järvinen, A. (1987) Microtine cycles and plant production: what is cause and effect?Oikos 49, 352–7.
Kalela, O. (1949) Uber Fjeldlemming-Invasionen und andere irregulären Tierwanderungen.Ann. Zool. Soc. ‘Vanamo’ 13, 1–90.
Kalela, O. (1961) Seasonal change of habitat in the Norwegian lemming,Lemmus lemmus (L.).Ann. Acad. Sci. Fenn., A IV ‘Biologica’ 178, 1–22.
Kalela, O. and Koponen, T. (1971) Food consumption and movements of the Norwegian lemmings in areas characterized by isolated fells.Ann. Zool. Fennici 8, 80–4.
Kelsall, J. P. (1968)The migratory barren ground caribou of Canada. Can. Wildl. Serv. Monogr. Ser. 3. Queen's Printer, Ottawa, Ont.
Korpimäki, E. (1984) Population dynamics of birds of prey in relation to fluctuations in small mammal populations in western Finland.Ann. Zool. Fennici 21, 287–93.
Łomnicki, A. (1978) Individual differences between animals and the natural regulation of their numbers.J. Anim. Ecol. 47, 461–75.
Łomnicki, A. (1987).Population ecology of individuals. Princeton Univ. Press, Princeton, NJ.
Mech, L. D. (1966).The wolves of Isle Royale. Fauna National Parks U. S. Government Printing Office, Washington, DC.
Murdoch, W. A. and Oaten, A. (1975) Predation and population stability.Adv. Ecol. Res. 9, 2–131.
Nordhagen, R. (1927) Die Vegetation und Flora des Sylenegebietes. I. Die Vegetation.Videnskaps-Akad. Skrifter I, Mat. Naturv. Kl. 1927 (1), 1–612.
Oksanen, L. (1981)Theoretical and empirical considerations on two-link ecosystems. PhD thesis, Kansas State University
Oksanen, L. (1983) Trophic exploitation and arctic phytomass patterns.Amer. Natur. 122, 45–52.
Oksanen, L. (1988) Ecosystem organization: mutualism and cybernetics or plain Darwinian struggle for existence?Amer. Natur. 131, 424–44.
Oksanen, L. (1989) Fredation, herbivory and plant strategies along gradients of primary productivity. InPerspectives on plant competition. (D. Tilman and J. Grace, eds) Academic Press, New York, pp. 445–69.
Oksanen, L. (1990) Exploitation ecosystems in seasonal environments.Oikos 57, 14–24.
Oksanen, L., Fretwell, S. D., Arruda, J. and Niemalä, P. (1981) Exploitation ecosystems in gradients of primary productivity.Amer. Natur. 118, 240–61.
Oksanen, T. (1990a) The stoat (Mustela erminea) and the weasel (M. nivalis) as predators of voles in northern Fennoscandian taiga: a test of the hypothesis of exploitation ecosystems. Submitted toOlkos.
Oksanen, T. (1990b) Does predation prevent Norwegian lemmings from establishing permanent populations in lowland forests?Biol. J. Linnean Soc. (London) (in press).
Oksanen, T., Oksanen, L. and Norberg, M. (1990) Habitat use of small mustelids in North Fennoscandian tundra: a test of the hypothesis of patchy exploitation systems. Submitted toOikos.
Pulliam, H. R. (1988) Sources, sinks and population regulation.Amer. Natur. 132, 652–61.
Rosenzweig, M. L. (1969) Why does the prey isocline have a hump?Amer. Natur. 103, 81–7.
Rosenzweig, M. L. (1971) The paradox of enrichment: destabilization of exploitation ecosystems in ecological time.Science 171, 385–7.
Rosenzweig, M. L. (1973) Exploitation in three trophic levels.Amer. Natur. 107, 275–94.
Rosenzweig, M. L. (1977). Aspects of biological exploitation.Quart. Rev. Biol. 52, 371–80.
Rosenzweig, M. L. and Abramski, Z. (1986) Centrifugal community organization.Oikos 46, 339–48.
Skjenneberg, S. and Slagsvold, L. (1968)Reindriften og dens naturgrunnlag. Universitetsforlaget. Oslo.
Schaller, G. B. (1972)The Serengeti lion. Univ. Chicago Press, Chicago, IL.
Tanner, J. T. (1975) The stability and intrinsic growth rates of prey and predator populations.Ecology 56, 855–67.
Viitala, J. (1977) Social organization in cyclic populations of the volesClethrionomys rufocanus (Sund.) andMicrotus agrestis (L.)Ann. Zool. Fennici 14, 53–9
Wollkind, D. J. (1976) Exploitation in three trophic levels: an extension allowing intraspecies carnivore interaction.Amer. Natur. 110, 431–47.
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Oksanen, T. Exploitation ecosystems in heterogeneous habitat complexes. Evol Ecol 4, 220–234 (1990). https://doi.org/10.1007/BF02214331
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DOI: https://doi.org/10.1007/BF02214331