980 E. Biological Oceanography OLR (1987) 34 ( 11 )

87:6420 Shipley, F.S., 1987. Sampling effort and bias in

soft-sediment benthic investigations using the Peterson dredge. Tex. J. Sci., 39(2):117-122.

Eight replicate grabs of uniform mud substrate were taken in central Matagorda Bay, Texas, to assess variability in organism densities among replicates. Based upon Morisita indices, 41 percent of species were significantly aggregated; none was distributed uniformly in spite of the homogeneous substrate at the study site. Large species, like mollusks, and some small but infrequent species were undersampled by single grabs. However, 97.9 percent of all individuals taken belonged to species taken in the first two replicates, indicating that the numerical composition of the community could be characterized in rela- tively few grabs. Texas Water Comm., 400 Mann St., Suite 905, Corpus Christi, TX 78401, USA.

87:6421 Terazaki, Makoto and Takeo Ishii, 1986. Exami-

nation of the possibility of automated identifi- cation of Chaetognatha utilizing an image proc- essor. Bull. Plankt. Soc. Japan, 33(2):95-100. Ocean Res. Inst., Univ. of Tokyo, 1-15-1 Minamidai, Nakano-ku, Tokyo 164, Japan.

E40. Area studies, surveys (baselines, ecol- ogy, etc.)

87:6422 Crafford, J.E., C.H. Scholtz and S.L. Chown, 1986.

The insects 126 spp.I of sub-Antarctic Marion and Prince Edward Islands; with a [250-item] bibli- ography of entomology of the Kerguelen bio- geographical province. S. Afr. J. Antarct. Res., 16(2):84pp. Dept. of Entomol., Univ. of Pretoria, 0002, South Africa.

87:6423 O'Sullivan, Geoffrey, 1984. Seasonal changes in the

intertidal fish and crustacean populations of Aughinish Island in the Shannon Estuary. Ir. Fish. Invest., (B)28:15pp. Environ. Mgmt. Sere., Osborne House, Seapoint Ave., Monkstown, Co. Dublin, Ireland.

E50. General biology, ecology, bioge- ography, etc.

87:6424 Clemmesen, B. and C.B. Jorgensen, 1987. Energetic

costs and efficiencies of ciliary filter feeding. Mar .

Biol., 94(3):445-449. Zoophysiolog. Lab. A, August Krogh Inst., Universitetsparken 13, DK-2100 Copenhagen O, Denmark.

87:6425 den Hartog, C. and G. van der Velde, 1987. Invasions

by plants and animals into coastal, brackish and fresh water of the Netherlands. Proc. K. ned. Akad. Wet., (C)90(1):31-37.

A survey is given of immigrant organisms in marine, brackish and fresh water of The Netherlands. It is concluded that only few species have been successful invaders, and that these are mainly restricted in their occurrence to man-made and heavily disturbed habitats. Lab. of Aquatic Ecol., Catholic Univ. of Nijmegen, Toernooiveld, 6525 ED Nijmegen, Neth- erlands.

87:6426 Hatcher, B.G., Jorg Imberger and S.V. Smith, 1987.

Scaling analysis of coral reef systems: an ap- proach to problems of scale. Coral Reefs, 5(4): 171-181.

Because the major processes (biological, biogeo- chemical, and hydrodynamic) occurring within reef systems vary over a wide range of spatial and temporal scales and are often nonlinear, scaling analysis provides a means of clarifying the essential processes and their interactions. This approach utilizes non-dimensional (scaled) parameters in defining variation scales (spatial and temporal) and assessing potential interactions between processes. Application of this technique to coral reefs is suggested as a means of achieving cost-effective research protocols and truly interdisciplinary studies. Mar. Biol. Lab., Zool. Dept., Univ. of Western Australia, P.O. Box 20, North Beach, WA 6020, Australia. (gsb)

87:6427 Joenje, W., K. Bakker and L. Vlijm (eds.), 1987. The

ecology of biological invasions. Proc. K. ned. Akad. Wet., (C)90(l):80pp; 11 papers.

Most of the contributions in this collection deal with Dutch and European studies, including a report on the Dutch contribution to the SCOPE program on the ecology of invasions, but four papers cover general aspects of biological invasions including stressed and natural systems, features of successful invasions, and modelling. The remaining papers are concerned with specific invasion case studies. (gsb)