- Environmental Evaluation
- Published:
Monitoring and manipulation of a sublittoral hard bottom biocoenosis in Balsfjord, northern Norway
Helgoländer Meeresuntersuchungen volume 33, pages 467–472 (1980)
Abstract
Sublittoral hard bottom biocoenoses in Balsfjord, Norway (69°31′ N, 19°1′ E), were monitored using underwater stereophotogrammetry. The study includes manipulation of natural densities of organisms and testing the importance of biological interactions and “key species ” for the structure of biocoenoses. Underwater photography has the advantages of being a non-destructive method, but it is selective because small or hidden organisms cannot always be observed. Field experiments with exclusion of organisms from cages seem suitable for testing hypotheses concerning which animals are “key species ” in certain biocoenoses. Sea-urchins(Strongylocentrotus droebachiensis, S. pallidus) were suspected to be “key species ” in the present study, and their removal from cages caused an increase in abundance of barnacles(Balanus balanoides), the limpetAcmaea testudinalis and algal cover.
Literature cited
Barnett, P. R. O., & Hardy, B. L. S., 1967. A diver-operated quantitative bottom sampler for sand macrofauna. — Helgoländer wiss. Meeresunters.15, 390–398.
Dayton, P. K., 1971. Competition, disturbance, and community organization: The provision and subsequent utilization of space in a rocky intertidal community. — Ecol. Monogr.41, 351–389.
Eilertsen, H. C., 1979. Planteplankton, minimumsfaktorer og primærproduksjon i Balsfjorden, 1977. Thesis, Univ. of Tromsø, 130 pp.
Evans, R. A., Gulliksen, B., & Sandnes, O. K., 1979. Effects of sedimentation on rocky bottom organisms in Balsfjord, Northern Norway. Fjord Oceanographic Workshop, Victoria, Canada. (In press.)
Hiscock, K. & Hoare, R., 1973. A portable suction sampler for rock epibiota. — Helgoländer wiss. Meeresunters.25, 35–38.
Jones, N. S. & Kain, J. M., 1967. Subtidal algal colonization following the removal ofEchinus. — Helgoländer wiss. Meeresunters.15, 460–466.
Lewis, J. R., 1978. The implications of community structure for benthic monitoring studies. — Mar. Pollut. Bull.9, 64–67.
Lundälv, T., 1971. Quantitative studies on rocky bottom biocoenoses by underwater photogrammetry: A methodological study. — Thalassia jugosl.7, 201–208.
Paine, R. T., 1969. ThePisaster-Tegula interaction: Prey patches, predator food preference and intertidal community structure. — Ecology50, 950–961.
Paine, R. T. & Vadas, R. L., 1969. The effects of grazing of sea urchins,Stronglyocentrotus spp., on benthic algal populations. — Limnol. Oceanogr.14, 710–719.
Schei, B., 1977. Hydrografiske undersøkelser i Balsfjorden, 1976. — Informasjon fra fjordprosjektet, Universitetet i Tromsø,13A, 1–8.
Sælen, O. H., 1950. The hydrography of some fjords in Northern Norway. — Tromsø Mus. Årsh.70, 1–93.
Torlegård, A. I. & Lundälv, T. L., 1974. Under-water analytical system. — Photogramm. Engng40, 287–293.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Sandnes, O.K., Gulliksen, B. Monitoring and manipulation of a sublittoral hard bottom biocoenosis in Balsfjord, northern Norway. Helgolander Meeresunters 33, 467–472 (1980). https://doi.org/10.1007/BF02414771
Issue Date:
DOI: https://doi.org/10.1007/BF02414771