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these, since phytoplankton and zooplankton differ greatly in size, they were classified into picoplankton, nanoplankton, microplankton, macroplankton and five sizes of large animal plankton. Chlorophyll a and phaeopigment were also incorporated into the investigation as parameters for understanding primary production. 2.3. Survey strategy 2.3.1. Line-transect survey The upper layer investigation occurred at 11 stations located in a straight line, as shown in figure 2. The survey area was near 9 degrees north latitude, 146° west longitude on the southeastern side of the Intertropical Convergence Zone (ITCZ). The latitude of 9° N in the Central Pacific Ocean lies at the boundary of the North Equatorial Current and the Equatorial Counter Current. In this area, mixing occurs at the surface, with upwelling from lower layers. With this in mind, an effort was made to follow a north-south survey line centring on Japan’s western mining area, so as to understand the complicated environment of the study area. As an example of an observation result, figure 3 shows the spatial distribution of water temperature. The surface-water temperature decreased from north to south, and thermoclines were well developed in the central area. At the central sampling stations, the mixed layers were shallow and low water temperatures appeared below them. Ogura 1 reported that surveys carried out along the 155° W meridian 2 indicated a region bounded by the North Equatorial and Equatorial Counter currents where water masses of relatively low temperatures had been observed near the surface. Similarly, Nishibori et al. 3 carried out fixed line observations along the meridian of 175° east longitude, and results showed that there were two water masses with relatively low temperatures in the surface areas near the equator. INTERNATIONAL SEABED AUTHORITY 191
Figure 2. Map of the investigation area showing the sampling stations for the upper layer. 2.3.2. Vertical observation and sampling Generally, it is said that the photic layer in the ocean is shallower than 200 metres, which is the distribution layer of the photosynthetic phytoplankton. Moreover, the pycnocline, which is also shallower than 200 m, is also important to ecosystems and other existing fields. For this 192 INTERNATIONAL SEABED AUTHORITY
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STANDARDIZATION OF ENVIRONMENTAL DA
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The designations employed and the p
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Chapter 8 Chapter 9 Chapter 10 Chap
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Standardization of Environmental Da
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Foreword Statement by the Secretary
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Participants Mr. Baïdy Diène, Spe
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Dr. Rahul Sharma, Scientist, Nation
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“Necessary measures shall be take
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three working groups, on chemistry
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Some vital procedures are not amena
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(Kingston, Jamaica), 289 pp. The re
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He observed that the Regulations, u
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Dr. Smith reviewed in detail the pr
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Notes and References 1. Internation
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- The Authority must be notified of
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area, but within one or two years e
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- A description of proposed measure
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??It has been previously made avail
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SUMMARY OF DISCUSSION Financial obl
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In the discussion, flexibility in t
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Chapter 2 Overview of the Authority
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2.3. Chemical oceanography - Object
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3. Environmental Impact Assessment
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?? Nodule crushing methods, if any;
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SUMMARY OF DISCUSSION Biological co
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The Secretary-General responded tha
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edeposit on the surrounding seafloo
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1.3. Importance of standardization
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detailed guidelines recommended by
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and “transect physical oceanograp
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eference to seven biological catego
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2.4.1.6. Demersal scavengers It is
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e measured must be specified. I rec
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3.2. Taxonomic standardization I st
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ecological comparisons. Several oth
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that supplied the benthos with ener
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speculate on the rates of recolonis
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Geographical variation Speaking nex
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Knowledge limitations Concluding hi
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on the other hand it turned out tha
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ecolonisation rates. If the area wa
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had been used to look at resediment
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ecover. In the case of the seabed,
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13. International Seabed Authority,
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Chapter 3 Current State of Knowledg
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side. Exploration contractors will
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However, for scientific endeavours
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50-m altitude (i.e., within the bot
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2.4. Biological communities The LTC
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sediment/water interface of each bo
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strata), with sampling on a diel ba
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abyssal seafloor communities 25 sea
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very useful to the design of baseli
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PRESENTATION ON DEEP-SEA ECOSYSTEM
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Most of the seabed macrofauna in th
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the CCFZ. Without understanding lev
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One could also make the opposite ar
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had to be mined each day. Assuming
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There was an increasing appreciatio
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whether the effects were severe in
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collect samples wherever he went in
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Forschungsverbund Tiefsee-Umweltsch
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25. C.R. Smith et al (1997), Latitu
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esistance and resilience of seafloo
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other parameters had been recorded
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environment, a conscious effort was
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oceanographic measurements, monitor
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Chapter 4 Priorities for Environmen
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and government organisations have c
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information. On the other hand, the
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contractors (1.5 x 10 6 km 2 ). Dur
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Contractors must carefully optimise
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3.4. Benthic and demersal community
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for environmental characterisation
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4.2.3. Observations of marine mamma
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Local topography exerts significant
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ooze can consist of more than 90% o
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Table 3 Benthic currents in the CCF
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5.3.2. Benthic currents and sedimen
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polychaetes and nematodes in the co
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from the DOMES sites illustrate thi
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5.5.1.1. Climate The climate is dom
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Surface temperatures typically reve
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process. With increasing depth, pho
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phosphorus. In the oceanic environm
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are found at about 40 m, while the
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often seen closer to land. The Paci
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square kilometres in two different
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In closing, Morgan discussed how to
Page 179 and 180: C.L. Morgan, N.A. Odunton and A.T.
Page 181 and 182: 26. Y. Morel and R. LeSuave (1986),
Page 183 and 184: 45. United States Office of Ocean M
Page 185 and 186: 68. Ibid. 69. Ibid. 70. Ibid. 71. T
Page 187 and 188: 300 m deep basins alternating with
Page 189 and 190: in water depths at or close to the
Page 191 and 192: eyond the semi-liquid layer, to whi
Page 193 and 194: 3.3. Modelling long-term propagatio
Page 195 and 196: ) Take two or three cores at each s
Page 197 and 198: facies type, which was affected by
Page 199 and 200: Another useful way to define the to
Page 201 and 202: transport would not take any partic
Page 203 and 204: Use of geological data for environm
Page 205 and 206: Mining of Polymetallic Nodules from
Page 207 and 208: About 50 scientists were involved i
Page 209 and 210: the programme was to learn the beha
Page 211 and 212: econciled with the findings of othe
Page 213 and 214: located at almost every 2-minute in
Page 215 and 216: ?? Geological studies: ?? Bathymetr
Page 217 and 218: the tracks. The range and average o
Page 219 and 220: designed to minimise the plume risi
Page 221 and 222: SUMMARY OF DISCUSSION Sediment cond
Page 223 and 224: mining system would remain suspende
Page 225 and 226: design a collector. That device had
Page 227 and 228: ?? For the upper layer environmenta
Page 229: Figure 1 Survey components of the u
Page 233 and 234: 2.4. Sample processing and size cat
Page 235 and 236: Figure 5 Schematic illustration of
Page 237 and 238: JET 3: the field study conducted on
Page 239 and 240: Besides the above, measurements wer
Page 241 and 242: 3.3. Sample processing and size cat
Page 243 and 244: Figure 10. Location of the five FDC
Page 245 and 246: ?? Calculation from discharged sedi
Page 247 and 248: 5. Total mass of dried sediment dis
Page 249 and 250: Figure 14 Thickness contour map of
Page 251 and 252: The use of GIS has many advantages.
Page 253 and 254: than the 200-metre depth distributi
Page 255 and 256: Among the chemical parameters, the
Page 257 and 258: SUMMARY OF DISCUSSION Impact of dis
Page 259 and 260: Mining (Metal Mining Agency of Japa
Page 261 and 262: Chapter 9 Data Standards Utilised i
Page 263 and 264: the three major categories of the b
Page 265 and 266: Various kinds of equipment were bei
Page 267 and 268: for biological research, but if it
Page 269 and 270: Asked for an estimate of the microb
Page 271 and 272: Sibuet agreed with Smith, emphasisi
Page 273 and 274: Chapter 10 Data Standards Utilised
Page 275 and 276: 2.1.4. High precision depth recorde
Page 277 and 278: 2.2.6. Piston corer ?? Acquiring bo
Page 279 and 280: 2.3.3. Geotechnical properties ?? U
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?? Concentration of cells by settle
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3.3. Zooplankton (protozoan) 3.3.1.
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?? The abundance data from the phot
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4.3. Statistical analysis Kriging w
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Figure 4 Sampling-sites map of KODO
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o Temperature ( C) o 5 N o 6 N o 7
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PRESENTATION AND DISCUSSION OF DATA
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een placed in the experimental bott
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phosphate concentration had been me
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KORDI was having trouble with a 10-
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Other environmental studies Lee sai
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Chapter 11 Data Standards Utilised
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2. Hydrochemical investigations Hyd
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and 5-6 cm. Samples from all layers
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4. Proposals 1. To evaluate environ
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second part of BIE, beginning in 20
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counted and classified into higher
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procedures could be followed for th
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PART III Environmental Parameters N
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a third trap beneath the two that h
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of a nodule-strewn plain, picking u
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Possible impacts on the pelagic com
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Chapter 12 Chemical Oceanography Dr
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To obtain quality data on metals in
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egin right from the start of the ac
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was ambient water. The system teste
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characteristics of sediments in the
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discussed by Dr. Gerald Matisoff (c
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Citing difficulties in measuring sh
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Sediment traps A participant asked
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Commenting on a suggestion to utili
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diversity at the community level. A
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Stuart and Rex 22 have shown that l
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the fauna in these samples. If the
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made up of mountain chains, faultin
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adiated extensively there in many e
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etween shelf and slope adjoined an
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een mined some time before, and con
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Another participant observed that h
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identifying species at various loca
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addition, the multi-corer was being
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20. R.J. Etter and L.S. Mullineaux
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Chapter 15 Seafloor Macrofauna in P
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Figure 2 The plough-harrow. 1. Resu
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deeper sediment and soft, partly re
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Year No. Year Phase 0 1989 Baseline
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uttons on the onboard unit so that
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a stainless steel collar with three
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the majority of samples were obtain
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whirled up into the plume may reset
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to recover (see above) and the comm
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Different methods have been propose
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For the 12 most abundant families o
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area in the southeast Pacific Ocean
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should be treated with a lot of wat
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ack-up camera, had also housed smal
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in 1992 compared to 1989. Seven yea
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distribution of the samples. Anothe
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have reacted similarly by becoming
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Another participant thought that th
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Need for a large-scale experiment A
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3. E.J. Foell, H. Thiel and G. Schr
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22. Detailed description in ibid. 2
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held in Sanya, Hainan Island, Peopl
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1.1. Meiofaunal abundance Some exam
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Central Equatorial Pacific 2° N 44
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Nematode ecological diversity is un
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discrete but morphologically simila
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too difficult to deal with and were
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Institution, had collected 148 spec
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California and the Rockall Trough),
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Another factor supposed to influenc
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shallow water, where nematodes were
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speaking, TNHM had the types for an
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samples every two days. The equipme
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marine nematologist there were 10,0
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core might have worked because the
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16. P.J.D. Lambshead (2001), Marine
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Chapter 17 Pelagic Community Impact
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1.2. Potential phytoplankton impact
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spatial variability. Sampling shoul
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2.6. Zooplankton Depth-stratified s
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helping to achieve consensus among
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One potential impact of discharging
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Consequently, in sampling these reg
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elevated levels of cadmium. It migh
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?? Marine mammals and seabirds: The
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Asked whether the impact would be d
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on some of the mesopelagic fishes.
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9. K.H. Coale (1998), The Galapagos
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PART IV Sampling, Database and Stan
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In the discussion, one participant
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The paper went on to make recommend
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1. Challenges for Developing a Base
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and impact sites were attributed to
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differential response of the commun
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etter assess the spatial extent of
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x x x x x x x x x x x x x x x x x x
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Challenges to sampling studies If p
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un. On the other hand, if test mini
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the plume, could be a large area wi
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e needed to elucidate data about do
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and he might be underestimating. An
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Chapter 19 Database Requirements Dr
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• Professional Development and Ma
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model used at the British Museum of
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Agreeing, Rex said the management o
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the importance of including informa
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Environmental concerns The Secretar
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Asking participants for their views
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A participant suggested that echino
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detritus in the oceans. Smith agree
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oceanographer, go to sea with the v
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A participant observed that, by the
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controversial items such as macrofa
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Chapter 21 Standardization Strategi
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have described methods for the stud
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a. Direct impacts along the track o
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3.3.2. Water column As the operatio
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3.6. Applications of environmental
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d. The duration of the operations w
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?? Avoiding the disturbance of the
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information for consideration and a
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?? Total inorganic carbon by coulom
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Table 2 Core sections analyzed for
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4200- 4400 4400- 4600 4600- 4800 48
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Besides their utility for impact as
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Turning to the requirements for fut
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SUMMARY OF DISCUSSION Size of envir
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Asked whether he thought the result
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2. J. S. Chung and K. Tsurusaki (19
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PART V Conclusions and Recommendati
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Chapter 22 Report of the Workshop T
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identified in square brackets [BB =
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available such information as (1) k
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y the Commission as ISBA/7/LTC/1/Re
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1. Sediment Properties Sediment pro
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Table 2 lists the chemical paramete
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4. Trace metals in benthic and epi-
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The following key parameters should
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enthic boundary layer) to evaluate
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a. Meteorological variables: sea st
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3. A.R. Hiby and P.S. Hammond (1989
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DGPS differential global positionin
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PEIS P-I POC PON PRZ QA/QC RCM RDBM
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Discipline Category Parameter Metho
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Discipline Category Parameter Metho
Page 575 and 576:
Area Parameters Instruments Levels
Page 577 and 578:
3b Parameter Variables Methodology
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