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  • 1
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    The primary productivity in the South China Sea, Area III: Western Philippines (2021)
    Secretariat, Southeast Asian Fisheries Development Center | Bangkok, Thailand
    In:  http://aquaticcommons.org/id/eprint/26271 | 2002 | 2019-02-21 02:15:25 | 26271 | Southeast Asian Fisheries Development Center, Secretariat
    Details
    Publication Date: 2021-07-24
    Description: In this paper the relative concentrations and vertical distributions of primary production were investigated off Western Philippines of the South China Sea during tradewinds from April 15 to May 11, 1998. Primary productivity measurements were conducted using conventional "light-and-dark bottle" oxygen method. The net primary production estimates at ten (10) different stations established between 19° 59.2'N, 119° 58.7'E and 11° 13.5'N, 118° 03.1'E ranged from 0.10 ~ 1.53 g C m-2 d1. The result suggests that the present net production estimates in the area is remarkably higher than the estimates from other parts of the South China Sea (viz., northern coastal waters off Taiwan and southwestern parts of the SCS which included marine waters of Thailand, Indonesia and Malaysia). The highest primary production occurred at the upper 60-m well-mixed layer of station 1 in the northwestern most part of the area. Results have shown that some other hydrographic and chemical parameters (viz., temperature, salinity, light and fluorescence) greatly complicate and may not coherent with the analyses of relative distribution and abundance of primary production in the area.
    Keywords: Fisheries ; Oceanography ; Phytoplankton ; Primary production ; South China Sea ; Philippines
    Repository Name: AquaDocs
    Type: book_section
    Format: application/pdf
    Format: application/pdf
    Format: 235-250
    Format: 16
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  • 2
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    Catch of experimental longline, purse seine and handline in the South China Sea, Area III: Western Philippines (2021)
    Secretariat, Southeast Asian Fisheries Development Center | Bangkok, Thailand
    In:  http://aquaticcommons.org/id/eprint/26260 | 2002 | 2019-03-01 05:49:00 | 26260 | Southeast Asian Fisheries Development Center, Secretariat
    Details
    Publication Date: 2021-07-24
    Description: This paper presents the tuna longline fishing operation conducted in western Philippine waters as well as the port sampling conducted in Zambales. The longline fishing operation was not successful in catching tuna but caught the deep swimming species such as sharks, lancet fish and opah. The undefined and shallow thermocline might have contributed to the unsuccessful fishing operations. Another reason might be the spatial distribution of tunas brought about by the El Niño event, which causes the spreading of the warm water mass from the western Pacific Ocean to the eastern Pacific Ocean allowing the yellowfin tunas to have a wider space to move. Yellowfin tuna stock in the western Philippine waters belongs to the juvenile and subadult population while the skipjack tunas belong to the adult population as most of the catch observed during port sampling were mature. The juvenile and sub-adult stages of yellowfin tunas were not the proper size for the longline fishery, which may explain in part why no tuna was caught during the research cruise. These sizes are available principally to the purse seine fishery as observed in the port sampling survey.
    Keywords: Fisheries ; Handlining ; Purse seining ; Catch composition ; Fishery surveys ; Experimental fishing ; Longlining ; Tuna fisheries ; South China Sea ; Philippines ; Thunnus albacares ; Euthynnus pelamis
    Repository Name: AquaDocs
    Type: book_section
    Format: application/pdf
    Format: application/pdf
    Format: 65-75
    Format: 11
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  • 3
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    The establishment of the Philippine Aquatic Sciences and Fisheries Information System (PASFIS) (2021)
    Secretariat, Southeast Asian Fisheries Development Center | Bangkok, Thailand
    In:  http://aquaticcommons.org/id/eprint/26360 | 23782 | 2019-04-02 03:35:39 | 26360 | Southeast Asian Fisheries Development Center, Secretariat
    Details
    Publication Date: 2021-07-24
    Keywords: Fisheries ; Information Management ; Information systems ; Information handling ; Information services ; Information centres ; Aquatic sciences ; Fisheries ; Philippines
    Repository Name: AquaDocs
    Type: book_section
    Format: application/pdf
    Format: application/pdf
    Format: 93-103
    Format: 11
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  • 4
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    The fisheries information service of RAPA (2021)
    Secretariat, Southeast Asian Fisheries Development Center | Bangkok, Thailand
    In:  http://aquaticcommons.org/id/eprint/26363 | 23782 | 2019-04-03 08:15:44 | 26363 | Southeast Asian Fisheries Development Center, Secretariat
    Details
    Publication Date: 2021-07-24
    Keywords: Fisheries ; Information Management ; Fishery data ; Documents ; Libraries ; Data collections ; Information services
    Repository Name: AquaDocs
    Type: book_section
    Format: application/pdf
    Format: application/pdf
    Format: 125-129
    Format: 5
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  • 5
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    Species composition, abundance and biomass distribution of zoobenthos in Vietnamese waters (2021)
    Secretariat, Southeast Asian Fisheries Development Center | Bangkok, Thailand
    In:  http://aquaticcommons.org/id/eprint/26379 | 23782 | 2019-04-05 08:42:20 | 26379 | Southeast Asian Fisheries Development Center, Secretariat
    Details
    Publication Date: 2021-07-24
    Description: The benthic invertebrate (zoobenthos) fauna in Vietnamese seawaters was surveyed in April - May, 1999. Zoobenthos specimen were sampled by Smith-McIntyre grab on 38 stations and 180 species were recorded and composed of 5 major groups: Polychaeta, Crustacea, Mollusca, Echinodermata and others. The total of density and biomass zoobenthos in Vietnamese seawaters was 156.7 ind/m2 and 5943.0 mg/m2 respectively. Polychaeta and Mollusca were groups with the highest abundance in every cases considered. The remaining groups of zoobenthos such as Crustacea and Echinodermata which were lower in abundance but higher in biomass. There was a remarkable variation of zoobenthos both in species composition and density with the depth, substrate and spatial distribution. Abundance was higher in some subjects considered such as: in depth of 0 - 60m or in types of sandy components or in the Tonkin gulf and the Southeast regions. All diversity indices shown that water quantity in Vietnamese sea offshore in survey time was just satisfactory and good.
    Keywords: Fisheries ; Oceanography ; Geographical distribution ; Community composition ; Species diversity ; Abundance ; Check lists ; Zoobenthos ; Viet Nam
    Repository Name: AquaDocs
    Type: book_section
    Format: application/pdf
    Format: application/pdf
    Format: 55-76
    Format: 22
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  • 6
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    Proceedings of the 4th Technical Seminar on Marine Fishery Resources Survey in the South China Sea, Area IV: Vietnamese Waters, 18-20 September 2000 (2021)
    Secretariat, Southeast Asian Fisheries Development Center | Bangkok, Thailand
    In:  http://aquaticcommons.org/id/eprint/26373 | 23782 | 2019-04-04 03:17:24 | 26373 | Southeast Asian Fisheries Development Center, Secretariat
    Details
    Publication Date: 2021-07-24
    Description: This, the fourth in the series of Technical Seminars on Marine Resources Survey, continues the essential evaluation of marine resources available in the South China Sea. This latest seminar is an evaluation of the waters of Vietnam. In the series of surveys this is identified as Area IV, There are two vital results from the survey activities; the first of these is that the scope, species composition and biomass estimation of the regional waters are assessed. Secondly another aspect is emphasized, that of the element of cooperation between the nations of the region such that no one country is isolated.
    Keywords: Fisheries ; Viet Nam ; Living resources ; Marine fish ; Fishery surveys ; Check lists ; Biomass ; International cooperation
    Repository Name: AquaDocs
    Type: book
    Format: application/pdf
    Format: application/pdf
    Format: 434
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  • 7
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    Selective Fisheries Information Service Phase II: Project ADD (Analysis and Document Delivery) (2021)
    Secretariat, Southeast Asian Fisheries Development Center | Bangkok, Thailand
    In:  http://aquaticcommons.org/id/eprint/26371 | 23782 | 2019-04-04 01:28:43 | 26371 | Southeast Asian Fisheries Development Center, Secretariat
    Details
    Publication Date: 2021-07-24
    Keywords: Fisheries ; Information Management ; Information services ; Information centres ; Information handling ; Information retrieval ; Information systems ; Documents
    Repository Name: AquaDocs
    Type: book_section
    Format: application/pdf
    Format: application/pdf
    Format: 197-209
    Format: 13
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  • 8
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    Composition, abundance and distribution of zooplankton in the South China Sea, Area IV: Vietnamese waters (2021)
    Secretariat, Southeast Asian Fisheries Development Center | Bangkok, Thailand
    In:  http://aquaticcommons.org/id/eprint/26380 | 23782 | 2019-04-05 08:41:33 | 26380 | Southeast Asian Fisheries Development Center, Secretariat
    Details
    Publication Date: 2021-07-24
    Description: The samples of 58 stations in Vietnamese Waters were collected by M.V. SEAFDEC on 21 April - 5 June 1999. Thirty-seven groups of zooplankton were found in this study. Copepoda was the most abundance followed by Chaetognatha and Ostracoda. Biomass varied from 0.21-7.29 ml/m3 (average 1.03±1.22 ml/m3). Station 56 has the highest biomass. Abundance varied from 99-2,365 ind/m3 (average 580±527 ind/m3). Station 58 has the highest abundance due to high number of Chaetognatha, polychaete, Lucifer spp., Thecosomes and Echinodermata larvae. Whereas Station 19 has the lowest abundance. Cephalopod paralarvae were concentrated. They were classsified into 15 genera belonging to 11 families: Sepia sp., Inioteuthis sp, Loligo spp., Enoploteuthis sp., Abralia sp., Watasenia sp., Onychoteuthis sp., Ctenopteryx sicula, Nototodarus sp., Sthenoteuthis oualaniensis, Thysanoteuthis rhombus , Liocranchia sp., Teuthowenia sp., Octopus defilippi, Octopus Type A, Octopus Type B, Octopus Type C and Tremoctopus sp. Sthenoteuthis oualaniensis found to be most abundance followed by Octopus Type B and Enoploteuthis. Sthenoteuthis oualaniensis found mostly in the middle part of Vietnamese waters especially in the oceanic zone.
    Keywords: Fisheries ; Oceanography ; Geographical distribution ; Community composition ; Abundance ; Zooplankton ; Check lists ; Copepoda ; Ostracoda ; Chaetognatha ; Viet Nam ; South China Sea
    Repository Name: AquaDocs
    Type: book_section
    Format: application/pdf
    Format: application/pdf
    Format: 77-93
    Format: 17
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  • 9
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    Assessment of relative abundance of fishes caught by gillnet in Vietnamese waters (2021)
    Secretariat, Southeast Asian Fisheries Development Center | Bangkok, Thailand
    In:  http://aquaticcommons.org/id/eprint/26375 | 23782 | 2019-04-04 03:33:52 | 26375 | Southeast Asian Fisheries Development Center, Secretariat
    Details
    Publication Date: 2021-07-24
    Description: The fisheries resources in near shore waters of Vietnam are reported to be overexploited resulting on the decrease of CPUE. It is important to develop the off-shore fisheries in Vietnam now. However information on off-shore fisheries resources in Vietnam was still very limited. This study was designed in order to supply such kind of information. The study area was in off-shore waters of Vietnam. R/V BIEN DONG (1500 Hp) with gillnet of 5 different mesh-size (73, 95, 123, 150 and 160 mm) was used for survey. The species and catch composition, distribution of promising species, relative abundance of target species were described. As a results, 98 species belonged to 32 families have been identified. Skipjack tuna was dominant (18.5 %). Distribution of relative abundance of some major species were given.
    Keywords: Fisheries ; Marine fisheries ; Catch composition ; Abundance ; Check lists ; Catch/effort ; Gillnets ; Viet Nam
    Repository Name: AquaDocs
    Type: book_section
    Format: application/pdf
    Format: application/pdf
    Format: 10-28
    Format: 19
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  • 10
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    Composition, abundance and distribution of fish eggs and larvae in the South China Sea, Area IV: Vietnamese waters (2021)
    Secretariat, Southeast Asian Fisheries Development Center | Bangkok, Thailand
    In:  http://aquaticcommons.org/id/eprint/26381 | 23782 | 2019-04-05 08:37:05 | 26381 | Southeast Asian Fisheries Development Center, Secretariat
    Details
    Publication Date: 2021-07-24
    Description: This report is based on the data of fish eggs and larvae samples which were collected at the 58 stations of the Vietnamese waters, it covered from latitude 7° - 21° N and longitude 103° - 112° E. The cruise was carried out from April 30 to May 29, 1999 by M/V SEAFDEC. The Standard larvae net and Bongo net were used for the surface and oblique sampling respectively and 14,507 fish eggs and 18,919 fish larvae were caught. The specimens have been identified, which comprise of 78 families, 94 genera, 94 species of fish eggs and larvae observed from this cruise. The most abundant fish eggs and larvae during the survey were Engraulidae, accounted for 8.5% total of eggs and 23.8% total of larvae. The species composition was observed to be very abundant. In each station, at least 6 families and the highest 30 families were collected during the survey. The abundance of ichthyoplankton is rather relatively high, the distribution occurred mainly in the areas of along the coastal, near estuaries and around the islands. The abundance of fish eggs concentrated higher than fish larvae. The density of distribution of fish eggs and larvae in the North Sea waters concentrated the most abundant of all and of the Central sea waters was the least abundant of all. Some of families of which fish eggs and larvae have dominated were presented.
    Keywords: Biology ; Fisheries ; Oceanography ; Dominant species ; Geographical distribution ; Ichthyoplankton ; Fish eggs ; Abundance ; Check lists ; Ichthyoplankton surveys ; Fish larvae ; Viet Nam ; South China Sea
    Repository Name: AquaDocs
    Type: book_section
    Format: application/pdf
    Format: application/pdf
    Format: 94-145
    Format: 52
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