Abstract
The annual mean abundance (1958 to 1986) and geographical distributions of four of the major biomass species of copepod in the northern North Atlantic Ocean arc shown together with their seasonal vertical distributions (1971 to 1974) from Ocean Weather Station I. The arcticboreal species Euchaeta norvegica and Calanus finmarchicus have sympatnc distributions with their maximum numerical abundance in the cold water current system between Labrador and Greenland. The distribution of the temperate species Pleuromamma robusta and Metridia lucens are allopatric with respect to the two previous species but have sympatric distributions centering around the north-eastern oceanic region. The four species dominate the copepod biomass of the oceanic epiplankton and minimise interspecific competition by a) seasonal displacement of their main reproductive periods, b) occupying different trophic levels, c) having diverse reproductive strategies, d) residing in different positions in the water column and e) having different migratory behaviour throughout the year. The vertical distributions and migratory behaviour of these four copepods suggest a highly structured community with individual species occupying distinct niches with minimum overlap between competitors; even though the vertical distributions of the species arc constantly changing through diel, ontogenetic and seasonal migrations.
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References
Bradley, R. A & D. W. Bradley, 1985. Do non-random patterns of species in niche space imply competition. Oikos 45: 443–446.
Colebrook. J M. 1982. Continuous plankton records: seasonal variations in the distribution and abundance of plankton in the North Atlantic Ocean and North Sen. J Plankton Res. 4: 435–463.
Ghilarov, A. M., 1984. The paradox of the plankton reconsidered: or why do species coexist? Oikos 43: 46–52.
Glover, R S., 1967. The continuous plankton recorder survey of the North Atlantic Symp. zool. Soc. Lond. 19. 189–210.
Hassell, MP. 1980. Some Consequences of habitat hetrogeneity for population dynamics. Oikos 35: 150–160.
Longhurst, A. R., 1985. Relationship between plankton diversity and the vertical structure of the upper ocean. Deep Sea Res. 32: 1535–1570.
Longhurst, A. R. & R Williams. 1976 Improved filtration systems for multiple-series plankton samples and their deployment. Deep Sea Res. 23: 1067–1073.
Longhurst, A. R. & R. Williams, 1979. Materials for plankton modelling: Vertical distribution of Atlantic zooplanklon in summer. J. Plankton Res. 1: 1–28.
Sameto, D D.. 1986. Influence of the biological and physical environment on the vertical distribution of mesozooplankton and micronekton in the eastern tropical pacific. Mar Biol. 93: 263–279.
Sorokin, Yu, I., 1980. Microheterotrophic organisms in Marine ecosystems. In A. R. Longhurst (ed.). Analysis of Marine Ecosystems. Academic Press. London & New York: 293–341
Williams. R. 1974. Biological sampling at OWS INDIA (59°00’N 19°00’W) in 1972 Annls. biol. Copenh. 30: 41–44
Williams. R & C. C Hopkins. 1975. Biological sampling at OWS INDIA (50°00’N 19°00’W) in 1973. Annls. biol. Copenh. 31: 60–62.
Williams. R. & C. C Hopkins, 1976. Biological sampling at OWS INDIA (59°00’N I9°00’W) in 1974. Annls. biol Copenh. 32: 57–60.
Williams, R & G. A. Robinson, 1973. Biological sampling at OWS INDIA (59°00’N 19°00’W) in 1971. Annls. biol Copenh. 28: 57–59.
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© 1988 Kluwer Academic Publishers
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Williams, R. (1988). Spatial heterogeneity and niche differentiation in oceanic zooplankton. In: Boxshall, G.A., Schminke, H.K. (eds) Biology of Copepods. Developments in Hydrobiology, vol 47. Springer, Dordrecht. https://doi.org/10.1007/978-94-009-3103-9_13
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DOI: https://doi.org/10.1007/978-94-009-3103-9_13
Publisher Name: Springer, Dordrecht
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