By E. A. Romankevich, A. A. Vetrov (auth.), John S. Gray, William Ambrose Jr., Anna Szaniawska (eds.)
Oceanographic discontinuities (e. g. frontal platforms, upwelling components, ice edges) are usually components of improved organic productiveness. huge examine at the physics and biology of the actual limitations defining those discontinues has been complete (see [I D. The interface among water and sediment is the biggest actual boundary within the ocean, yet has now not bought a proportionate measure of consciousness. the aim of the Nato complex examine Workshop (ARW) used to be to target soft-sediment platforms by means of settling on deficiencies in our wisdom of those platforms and defining key matters within the administration of coastal sedimentary habitats. Marine sediments play vital roles within the marine surroundings and the biosphere. they supply nutrients and habitat for plenty of marine organisms, a few of that are commercially very important. extra importantly from an international viewpoint, marine sediments additionally supply "ecosystem items and prone" [2J. natural subject from fundamental creation within the water column and contaminants scavenged through debris acquire in sediments the place their destiny is dependent upon sediment techniques reminiscent of bioturbation and biogeochemical biking. meals are regenerated and contaminants degraded in sediments. lower than a few stipulations, carbon accumulates in coastal and shelf sediments and will by way of faraway from the carbon cycle for thousands of years, having a in all probability major effect on worldwide weather switch. Sediments additionally defend coasts. the commercial price of prone supplied via coastal components has lately been envisioned to be at the order of $12,568 nine 10 y" [3J, a long way in far more than the worldwide GNP.
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Extra info for Biogeochemical Cycling and Sediment Ecology
Figure 1. A map of the Aral Sea coastlines in 1960 (dotted line) and 1987 (solid line) with sites of investigations for 1989·1996 (rectangles). I - ncar I. Barsakelmes; 2 - Tshche-Bas Gulf; 3 - Tastubeck cape; 4 - near Bugun' settlement (Eastern coast); S - Shcvchenko Gulf; 6 - Syrdarya pre-mouth area and Berg's strait; 7- Bulakov Gulf; 8 -801. SIIIY-Chaganack Gulf. 3. 5m were collected as a mixed sample from different depths using a "Hydrobios" water-sampler. In shallow waters and temporary pools samples were taken only from the surface.
V. (1996) Photosynthetic primary production in the Ocean, based on expedition's and satellite data, Okeanologiya 36,566-575. 51. B. V. (1992) Primary production in the ocean, Jurnal obschey biologii 53, 314-327. 52. Krupatkina, OK, Berlak, B. and Maestriny, C. 4, 56-62. 53. B. O. (1995) Potential gross primary productivity of terresuial vegetation from 27 54. 55. 56. 57. 58. 59. 60. 61. 62. 63. 64. 65. 66. 67. 68. 69. 70. 71. 72. 73. 74. 75. 76. 77. 78. 79. 1982-1990, Geophysical Research Letters 22, 2617-2620.
SIIIY-Chaganack Gulf. 3. 5m were collected as a mixed sample from different depths using a "Hydrobios" water-sampler. In shallow waters and temporary pools samples were taken only from the surface. The samples were concentrated by filtration on "Whatman" GFIF fibreglass filters and the filters with particulate matter were dried and frozen before analysis. Sediment sampling was performed using plastic·tubes with 05 em to depths of 7II cm. From each station usually 3-8 cores were taken. In the majority of analyses only 33 the 4 upper cm were used.