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?? Four samplers deployed at proper intervals (about 200-300 m) along a line at each sampling site ?? Composition: float, grab, ballasts ?? Coverage: 0.25 m 2 each 2.2.2. Free-fall grab sampler with camera ?? Acquiring photographs of bottom surface where polymetallic nodules were sampled ?? Lens angle in water: 46° 2.2.3. Cable-photo grab sampler ?? Providing information on polymetallic nodule population and sediment properties ?? Coverage: 0.9 m 2 ?? Dimensions: 96 by 67 by 70 centimetres ?? Sampling depth: 30 cm 2.2.4. Spade corer ?? Acquiring sediment and polymetallic nodules distributed on the top of the sediment ?? Holds a 0.1-m 2 stainless steel sample box and has a maximum effective penetration of 50 cm ?? Units: special flow-through head design, automatic door closing device, pre-trip preventer bar with posi-action hook, stainless sample box with detachable handles, box bottom plate ?? Frame size: 165 x 195 x 220 cm ?? Spade size: 20 x 30 x 60 cm 2.2.5. Multiple corer ?? Acquiring bottom-sediment samples ?? Diameter: 9.5 cm ?? Length: 60 cm ?? 8 units INTERNATIONAL SEABED AUTHORITY 237
2.2.6. Piston corer ?? Acquiring bottom-sediment samples ?? Diameter: 9.5 cm ?? Maximum penetration depth: 12 m 2.2.7. Dredge ?? Acquiring polymetallic nodules ?? Diameter: 100 cm ?? Length: 180 cm 2.2.8. Sediment trap (mooring) ?? Acquiring sediment flux in water column ?? Aperture diameter: 80 cm ?? Height: 150 cm 2.2.9. Deep-tow imaging system ?? Acquiring real-time bottom-surface images ?? Camera units: 35-millimetre still camera, continuous video images, 7500 m of coaxial cable, 800 frames of 35-mm photographs 2.3. Analytical methods 2.3.1. Manganese nodule geochemistry ?? Sampling: Spade corer and free-fall grab sampler ?? Baseline for classification: surface texture (four types), external pattern (six types), size (six ranges) ?? Separation of nodule and sediments (detritus) ?? Dehydration 238 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
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C.L. Morgan, N.A. Odunton and A.T.
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26. Y. Morel and R. LeSuave (1986),
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45. United States Office of Ocean M
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68. Ibid. 69. Ibid. 70. Ibid. 71. T
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300 m deep basins alternating with
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in water depths at or close to the
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eyond the semi-liquid layer, to whi
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3.3. Modelling long-term propagatio
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) Take two or three cores at each s
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facies type, which was affected by
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Another useful way to define the to
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transport would not take any partic
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Use of geological data for environm
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Mining of Polymetallic Nodules from
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About 50 scientists were involved i
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the programme was to learn the beha
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econciled with the findings of othe
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located at almost every 2-minute in
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?? Geological studies: ?? Bathymetr
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the tracks. The range and average o
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designed to minimise the plume risi
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SUMMARY OF DISCUSSION Sediment cond
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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 and 230: Figure 1 Survey components of the u
Page 231 and 232: Figure 2. Map of the investigation
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: 2.1.4. High precision depth recorde
Page 279 and 280: 2.3.3. Geotechnical properties ?? U
Page 281 and 282: ?? Concentration of cells by settle
Page 283 and 284: 3.3. Zooplankton (protozoan) 3.3.1.
Page 285 and 286: ?? The abundance data from the phot
Page 287 and 288: 4.3. Statistical analysis Kriging w
Page 289 and 290: Figure 4 Sampling-sites map of KODO
Page 291 and 292: o Temperature ( C) o 5 N o 6 N o 7
Page 293 and 294: PRESENTATION AND DISCUSSION OF DATA
Page 295 and 296: een placed in the experimental bott
Page 297 and 298: phosphate concentration had been me
Page 299 and 300: KORDI was having trouble with a 10-
Page 301 and 302: Other environmental studies Lee sai
Page 303 and 304: Chapter 11 Data Standards Utilised
Page 305 and 306: 2. Hydrochemical investigations Hyd
Page 307 and 308: and 5-6 cm. Samples from all layers
Page 309 and 310: 4. Proposals 1. To evaluate environ
Page 311 and 312: second part of BIE, beginning in 20
Page 313 and 314: counted and classified into higher
Page 315 and 316: procedures could be followed for th
Page 317 and 318: PART III Environmental Parameters N
Page 319 and 320: a third trap beneath the two that h
Page 321 and 322: of a nodule-strewn plain, picking u
Page 323 and 324: Possible impacts on the pelagic com
Page 325 and 326: 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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