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Round Scad Exploration by Purse Seine in the South China Sea, Area III: Western Philippines
Round scad exploration by purse seine in the South China Sea, Area III: Western Philippines Item Type book_section Authors Pastoral, Prospero C.; Escobar Jr., Severino L.; Lamarca, Napoleon J. Publisher Secretariat, Southeast Asian Fisheries Development Center Download date 01/10/2021 13:06:13 Link to Item http://hdl.handle.net/1834/40530 Proceedings of the SEAFDEC Seminar on Fishery Resources in the South China Sea, Area III: Western Philippines Round Scad Exploration by Purse Seine in the South China Sea, Area III: Western Philippines Prospero C. Pastoral1, Severino L. Escobar, Jr.1 and Napoleon J. Lamarca2 1BFAR-National Marine Fisheries Development Center, Sangley Point, Cavite City, Philippines 2BFAR-Fishing Technology Division, 860 Arcadia Bldg., Quezon Avenue, Quezon City, Philippines ABSTRACT Round scad exploration by purse seine in the waters of western Philippines was conducted from April 22 to May 7, 1998 for a period of five (5) fishing days with a total catch of 7.3 tons and an average of 1.5 tons per setting. Dominant species caught were Decapterus spp. having 70.09% of the total catch, followed by Selar spp. at 12.66% and Rastrelliger spp. 10.70%. Among the Decapterus spp. caught, D. macrosoma attained the highest total catch composition by species having 68.81% followed by D. kurroides and D.russelli with 0.31% and 1.14% respectively. The round scad fishery stock was composed mainly of juvenile fish (less than 13 cm) and Age group II (13 cm to 14 cm). Few large round scad at Age group IV and V (20 cm to 28 cm) stayed at the fishery. -
Tuna Fishing and a Review of Payaos in the Philippines
Session 1 - Regional syntheses Tuna fishing and a review of payaos in the Philippines Jonathan O. Dickson*1', Augusto C. Nativiclacl(2) (1) Bureau of Fisheries and Aquatic Resources, 860 Arcadia Bldg., Quezon Avenue, Quezon City 3008, Philippines - [email protected] (2) Frabelle Fishing Company, 1051 North Bay Blvd., Navotas, Metro Manila, Philippines Abstract Payao is a traditional concept, which has been successfully commercialized to increase the landings of several species valuable to the country's export and local industries. It has become one of the most important developments in pelagic fishing that significantly contributed to increased tuna production and expansion of purse seine and other fishing gears. The introduction of the payao in tuna fishing in 1975 triggered the rapid development of the tuna and small pelagic fishery. With limited management schemes and strategies, however, unstable tuna and tuna-like species production was experienced in the 1980s and 1990s. In this paper, the evolution and development of the payao with emphasis on the technological aspect are reviewed. The present practices and techniques of payao in various parts of the country, including its structure, ownership, distribution, and fishing operations are discussed. Monitoring results of purse seine/ringnet operations including handline using payao in Celebes Sea and Western Luzon are presented to compare fishing styles and techniques, payao designs and species caught. The fishing gears in various regions of the country for harvesting payao are enumerated and discussed. The inshore and offshore payaos in terms of sea depth, location, designs, fishing methods and catch composi- tion are also compared. Fishing companies and fisherfolk associations involved in payao operation are presented to determine extent of uti- lization and involvement in the municipal and commercial sectors of the fishing industry. -
An Annotated Checklist of Philippine Flatfish: Ecological Implications3'
An Annotated Checklist of Philippine Flatfish: Ecological Implications3' A. Cabanbanb) E. Capulic) R. Froesec) and D. Pauly1" Abstract An annotated list of the flatfish of the Philippines was assembled, covering 108 species (vs. 74 in the entire North Atlantic), and thus highlighting this country's feature of being at the center of the world's marine biodiversity. More than 80 recent references relating to Philippine flatfish are assembled. Various biological inferences are drawn from the small sizes typical of Philippine (and tropical) flatfish, and pertinent to the "systems dynamics of flatfish". This was facilitated by the FishBase CD-ROM, which documents all data presented here, and which was used to generate the graphs supporting these biological inferences. a) For presentation at the Third International Symposium on Flatfish Ecology, 2-8 November 1996, Netherlands Institute for Sea Research (NIOZ), Texel, The Netherlands. ICLARM Contribution No. 1321. b> Borneo Marine Research Unit, Universiti Malaysia Sabah, 9th Floor Gaya Centre, Jalan Tun Fuad Stephens, Locked Bag 2073, 88999 Kota Kinabalu, Sabah, Malaysia. c) International Center for Living Aquatic Resources Management (ICLARM), MCPO Box 2631, 0718 Makati City, Philippines. d) Fisheries Centre, University of British Columbia, 2204 Main Mall, Vancouver, B.C. Canada V6T 1Z4. E- mail: [email protected]. Introduction Taxonomy, in its widest sense, is at the root of every scientific discipline, which must first define the objects it studies. Then, the attributes of these objects can be used for various classificatory and/or interpretive schemes; for example, the table of elements in chemistry or evolutionary trees in biology. Fisheries science is no different; here the object of study is a fishery, the interaction between species and certain gears, deployed at certain times in certain places. -
The Project for Study on Improvement of Bridges Through Disaster Mitigating Measures for Large Scale Earthquakes in the Republic of the Philippines
THE REPUBLIC OF THE PHILIPPINES DEPARTMENT OF PUBLIC WORKS AND HIGHWAYS (DPWH) THE PROJECT FOR STUDY ON IMPROVEMENT OF BRIDGES THROUGH DISASTER MITIGATING MEASURES FOR LARGE SCALE EARTHQUAKES IN THE REPUBLIC OF THE PHILIPPINES FINAL REPORT MAIN TEXT [2/2] DECEMBER 2013 JAPAN INTERNATIONAL COOPERATION AGENCY (JICA) CTI ENGINEERING INTERNATIONAL CO., LTD CHODAI CO., LTD. NIPPON KOEI CO., LTD. EI JR(先) 13-261(3) Exchange Rate used in the Report is: PHP 1.00 = JPY 2.222 US$ 1.00 = JPY 97.229 = PHP 43.756 (Average Value in August 2013, Central Bank of the Philippines) LOCATION MAP OF STUDY BRIDGES (PACKAGE B : WITHIN METRO MANILA) i LOCATION MAP OF STUDY BRIDGES (PACKAGE C : OUTSIDE METRO MANILA) ii B01 Delpan Bridge B02 Jones Bridge B03 Mc Arthur Bridge B04 Quezon Bridge B05 Ayala Bridge B06 Nagtahan Bridge B07 Pandacan Bridge B08 Lambingan Bridge B09 Makati-Mandaluyong Bridge B10 Guadalupe Bridge Photos of Package B Bridges (1/2) iii B11 C-5 Bridge B12 Bambang Bridge B13-1 Vargas Bridge (1 & 2) B14 Rosario Bridge B15 Marcos Bridge B16 Marikina Bridge B17 San Jose Bridge Photos of Package B Bridges (2/2) iv C01 Badiwan Bridge C02 Buntun Bridge C03 Lucban Bridge C04 Magapit Bridge C05 Sicsican Bridge C06 Bamban Bridge C07 1st Mandaue-Mactan Bridge C08 Marcelo Fernan Bridge C09 Palanit Bridge C10 Jibatang Bridge Photos of Package C Bridges (1/2) v C11 Mawo Bridge C12 Biliran Bridge C13 San Juanico Bridge C14 Lilo-an Bridge C15 Wawa Bridge C16 2nd Magsaysay Bridge Photos of Package C Bridges (2/2) vi vii Perspective View of Lambingan Bridge (1/2) viii Perspective View of Lambingan Bridge (2/2) ix Perspective View of Guadalupe Bridge x Perspective View of Palanit Bridge xi Perspective View of Mawo Bridge (1/2) xii Perspective View of Mawo Bridge (2/2) xiii Perspective View of Wawa Bridge TABLE OF CONTENTS Location Map Photos Perspective View Table of Contents List of Figures & Tables Abbreviations Main Text Appendices MAIN TEXT PART 1 GENERAL CHAPTER 1 INTRODUCTION ..................................................................................... -
Dynamics of Atmospheres and Oceans Seasonal Surface Ocean
Dynamics of Atmospheres and Oceans 47 (2009) 114–137 Contents lists available at ScienceDirect Dynamics of Atmospheres and Oceans journal homepage: www.elsevier.com/locate/dynatmoce Seasonal surface ocean circulation and dynamics in the Philippine Archipelago region during 2004–2008 Weiqing Han a,∗, Andrew M. Moore b, Julia Levin c, Bin Zhang c, Hernan G. Arango c, Enrique Curchitser c, Emanuele Di Lorenzo d, Arnold L. Gordon e, Jialin Lin f a Department of Atmospheric and Oceanic Sciences, University of Colorado, UCB 311, Boulder, CO 80309, USA b Ocean Sciences Department, University of California, Santa Cruz, CA, USA c IMCS, Rutgers University, New Brunswick, NJ, USA d EAS, Georgia Institute of Technology, Atlanta, GA, USA e Lamont-Doherty Earth Observatory, Columbia University, Palisades, NY, USA f Department of Geography, Ohio State University, Columbus, OH, USA article info abstract Article history: The dynamics of the seasonal surface circulation in the Philippine Available online 3 December 2008 Archipelago (117◦E–128◦E, 0◦N–14◦N) are investigated using a high- resolution configuration of the Regional Ocean Modeling System (ROMS) for the period of January 2004–March 2008. Three experi- Keywords: ments were performed to estimate the relative importance of local, Philippine Archipelago remote and tidal forcing. On the annual mean, the circulation in the Straits Sulu Sea shows inflow from the South China Sea at the Mindoro and Circulation and dynamics Balabac Straits, outflow into the Sulawesi Sea at the Sibutu Passage, Transport and cyclonic circulation in the southern basin. A strong jet with a maximum speed exceeding 100 cm s−1 forms in the northeast Sulu Sea where currents from the Mindoro and Tablas Straits converge. -
PDF | 2.53 MB | Negros Island Region (NIR) Profile*
Philippines: Negros Island Region (NIR) Profile* Negros Island Region is the 18th and newest region of the POPULATION Philippines, created on 29 May 2015. It comprises the urbanized city of Bacolod and the provinces of Negros Occidental and 2 19 38 1,219 Source: PSA 2015 Census Negros Oriental, along with outlying islands and islets. The PROVINCES CITIES MUNICIPALITIES BARANGAYS NIR population NIR households island is the fourth largest in the country with a total land area of 13,309.60 square kilometres. 2.17M 4.41 1.01 49.2% Visayan Sea million million Female Cadiz 4 9 4 9 4 9 4 9 4 9 4 + 9 4 6 5 5 4 4 3 3 2 2 1 1 - - - - - - - - - - - - - 5 5 0 0 5 0 5 0 5 0 5 0 5 0 Population statistics trend 6 Male 6 5 5 4 4 3 3 2 2 1 1 50.8% Guimaras Strait 4.41M 3.68M Bacolod 2015 Census 2010 Census 2.24M Bago POVERTY LIVELIHOOD Source: PSA 2015 Source: PSA (QuickStat) 2016 Poverty incidence among population (%) Negros Occidental province Labor force 60% 45% 32.3% Negros Tañon Strait Occidental 30% 70.3% NEGROS 30.4% 28.2% 29.0% Participation Negros 15% rate OCCIDENTAL Oriental Panay Gulf 0 2006 2009 2012 2015 18.6% Poverty incidence among population (%) Under Negros Oriental province employment 60% 50.1% rate 45% 45.0% 96.0% 30% 42.9% 0 - 14 15 - 26 27 - 39 40 - 56 57 - 84 33.2% Employment NEGROS rate 15% ORIENTAL % Poverty incidence 0 2006 2009 2012 2015 Legend Bais HEALTH EDUCATION Provincial capital Major city Source: DOH (Personnel 2012/Facilities 2016) Source: PSA 2010/DepEd 2016 Major airport Tanjay Facilities Minor airport (Philippines -
Assessment of the Fisheries of Sorsogon Bay (Region 5)
ASSESSMENT OF THE FISHERIES OF SORSOGON BAY (REGION 5) VIRGINIA L. OLAÑO, MARIETTA B. VERGARA and FE L. GONZALES ASSESSMENT OF THE FISHERIES OF SORSOGON BAY (REGION 5) VIRGINIA L. OLAÑO Project Leader, National Stock Assessment Program (NSAP) Bureau of Fisheries and Aquatic Resources, Region V (BFAR V) San Agustin, Pili, Camarines Sur MARIETTA B. VERGARA Assistant Project Leader, NSAP BFAR V, San Agustin, Pili, Camarines Sur and FE L. GONZALES Co-Project Leader BFAR-National Fisheries Research and Development Institute Kayumanggi Press Building, Quezon Avenue, Quezon City Assessment of the Fisheries of Sorsogon Bay CONTENTS List of Tables iii List of Figures iv List of Abbreviations, Acronyms and Symbols vi ACKNOWLEDGMENTS viii ABSTRACT ix INTRODUCTION 1 Objectives of the Study 3 General 3 Specific 3 METHODOLOGY 4 RESULTS AND DISCUSSION 5 Boat and Gear Inventory 5 Dominant Families 5 Dominant Species 6 Catch Composition of Major Fishing Gear 8 Catch Contribution of Major Fishing Gear 11 Seasonality of Species Caught by Major Fishing Gear 12 Seasonality of Catch of Major Fishing Gear 17 Catch, Effort and Catch Per Unit Effort 18 Surplus Production 19 Population Parameters 20 Probability of Capture 21 Virtual Population Analysis 24 Relative Yield Per Recruit 24 CONCLUSION AND RECOMMENDATIONS 30 REFERENCES 31 ii Assessment of the Fisheries of Sorsogon Bay TABLES Table 1 Production estimates of the different types of fishing gear used in Sorsogon Bay (based on boat and gear inventory as of December 2001) 6 Table 2 Catch data on the dominant -
The Country Report of the Republic of the Philippines: Technical Seminar on South China Sea Fisheries Resources
The country report of the Republic of the Philippines: Technical seminar on South China Sea fisheries resources Item Type book_section Publisher Japan International Cooperation Agency Download date 30/09/2021 10:06:36 Link to Item http://hdl.handle.net/1834/40440 3.3 Other areas catch rate in waters shallower than 50 meters which are 3.3.1 East Malaysia fairly well exploited, and with a potential yield of 3.0 tons An estimate of potential yield is made for demersal and per square nautical mile. semipelagic species only based on the results of a single Unless very efficient gear, such as pair trawling, can be demersal trawl survey in the coastal waters up to about 50 employed to exploit successfully this sparse resource it is meters. The estimate is 183,000 tons but is more likely to not expected that major fishery can be developed. be between 91,500 to 137,250 tons. The potential yield (b) East coast of West Malaysia and East Malaysia per square nautical mile of 10.6 tons is similar to that of The estimate of potential yield is comprehensively the east coast of West Malaysia, 10.3 tons. dealt with by Shindo (IPFC/72/19) and as the average 3.3.2 Deeper waters density is low, though in some areas it is higher than (a) West coast of West Malaysia others, the problem of developing major fisheries for these In waters deeper than 50 meters the average catch rate demersal fish stocks is similar to the one discussed above of about 92.0 kg per hour was lower, about 64% of the for the west coast of West Malaysia. -
Ventilation of the Sulu Sea Retrieved from Historical Data
Acta Oceanol. Sin., 2014, Vol. 33, No. 9, P. 1–11 DOI: 10.1007/s13131-014-0517-3 http://www.hyxb.org.cn E-mail: [email protected] Ventilation of the Sulu Sea retrieved from historical data LI Li1*, GAN Zijun2 1 Third Institute of Oceanography, State Oceanic Administration, Xiamen 361005, China 2 State Key Laboratory of Tropical Oceanography, South China Sea Institute of Oceanoglogy, Chinese Academy of Sciences, Guangzhou 510301, China Received 8 April 2014; accepted 28 May 2014 ©The Chinese Society of Oceanography and Springer-Verlag Berlin Heidelberg 2014 Abstract Based on historical observations, ventilation of the Sulu Sea (SS) is investigated and, its interbasin exchange is also partly discussed. The results suggest that near the surface the water renewal process not only oc- curs through the Mindoro Strait (MS) and the Sibutu Passage, but also depends on the inflows through the Surigao Strait and the Bohol Sea from the Pacific and through the Balabac Strait from the South China Sea (SCS). Both inflows are likely persistent year round and their transports might not be negligible. Below the surface, the core layer of the Subtropical Lower Water (SLW) lies at about 200 m, which enters the SS through the Mindoro Strait not hampered by topography. Moreover, there is no indication of SLW inflow through the Sibutu Passage even though the channel is deep enough to allow its passage. The most significant ventilation process of the SS takes place in depths from 200 m to about 1 200 m where intermediate convection driven by quasi-steady inflows through the Mindoro and Panay straits (MS-PS) dominates. -
Bioeconomic Modelling of Fishery Conservation Policies in the Philippines
BIOECONOMIC MODELLING OF FISHERY CONSERVATION POLICIES IN THE PHILIPPINES Maria Rebecca A. Campos, Ph.D. University of the Philippines Open University 1 Why overfished or depleted? Open access nature of fishing (lack of management, regulation, enforcement) Widespread technological advances (more efficient gear, stronger and larger nets, electronic fishing devices, increased ability to fish all over the world, even in the most isolated places Economic development policies of governments, esp those providing subsidies to keep inefficient boats running and encouraging even more investment in fishing Growing human population Large increase in prices for a growing global market 2 NATIONAL STATISTICS Viet Nam People’s Pacific Twelfth largest fish Laos Republic Ocean of China producer,1998 (1.8 M mt) Philippine Sea Thailand South China Eighteenth aquaculture Sea THETHE PHILIPPINES Cambodia PHILIPPINES producer (135 mt) Gulf of Guam Since 1991, fish catch Thailand Palau (USA) declined at about 5.4 % Brunei yearly Malaysia Celebes Sea 2.34 % population growth rate Indonesia Java Sea Banda Sea Flores Sea Indian Ocean 3 PHILIPPINE SITUATION Direct income to 1.3 M fishers and their families Ave earning of Euros 75 per month or over Euros 1,190 M worth of employment annually 4 Lamon Bay Statistics Fifth highest commercial fishing ground Ninth highest municipal fishing ground Since 1985, fish catch declined at about 13.5 % yearly (> 5.4 % national average) 3.62 % population growth rate 5 RESEARCH PROBLEM What are the reasons for policy failure in Lamon Bay? No study to determine effectiveness, acceptability and efficiency of policies 6 POLICY RELEVANCE Republic Act 8550 justifies banning of commercial gears in municipal waters extends municipal waters from 7 to 15 km from coastline DA Administrative Order No. -
RIOP09, Leg 2 [Final] Report
RIOP09, Leg 2 [final] Report Regional Cruise Intensive Observational Period 2009 RIOP09 R/V Melville, 27 February – 21 March 2009 Arnold L. Gordon, Chief Scientist Leg 2 [final] Report Manila to Dumaguete, 9 March to 21 March 2009 “Pidgie” RIOP09 Leg 2 Mascot, Dumaguete-Manila Preface: While this report covers RIOP09 leg 2, it also serves as the final report, thus the introductory section of the leg 1 report is repeated. For completeness within a single document the preliminary analysis [or better stated: first impressions of the story told by the RIOP09 data set] included in the leg 1 report are given in the appendices section of this report. Other appendices describe specific components of RIOP09: CTD-O2; LADCP; hull ADCP; PhilEx moorings; the Philippine research program: Chemistry/Bio- optics; and sediment trap moorings. I Introduction: The second Regional IOP of PhilEx, RIOP09, aboard the R/V Melville began from Manila on 27 February. We return to Manila on 21 March 2009, with an intermediate port stop for personnel exchange in Dumaguete, Negros, on 9 March. This divides the RIOP09 into 2 legs, with CTD-O2/LADCP/water samples [oxygen, nutrients]; hull ADCP and underway-surface data [met/SSS/SST/Chlorophyll] on both legs, and the recovery of: 4 PhilEx, 2 Sediment Trap moorings of the University of Hamburg, and an EM-Apex profiler, on leg 2. The general objective of RIOP09, as with the previous regional cruises is to provide a view of the stratification and circulation of the Philippine seas under varied monsoon condition, as required to support of PhilEx DRI goals directed at ocean 1 RIOP09, Leg 2 [final] Report dynamics within straits. -
Trawl Catch and Bycatch Survey in Samar Sea, Philippines
Trawl catch and bycatch survey in Samar Sea, Philippines 2016 Strategies for trawl fisheries bycatch management project ii Trawl catch and bycatch survey in Samar Sea, Philippines Renato C. Diocton College of Fisheries and Marine Sciences Samar State University - Mercedes Campus Catbalogan City Strategies for trawl fisheries bycatch management (REBYC-II CTI; GCP/RAS/269/GFF) 2016 Trawl catch and bycatch survey in Samar Sea, Philippines Table of contents Abstract ................................................................................................................................................... 1 1. Introduction .................................................................................................................................... 2 2. Materials and methods ................................................................................................................... 2 2.1. Data collection and catch and bycatch assessments .............................................................. 2 2.2. Analysis of data ........................................................................................................................ 3 2.2.1. Standing stock and extraction rate ................................................................................. 3 2.2.2. Index of relative importance ........................................................................................... 3 2.2.3. Length-weight relationship ............................................................................................