DOCSLIB.ORG

FFI B+WISER Historical Mangrove Change Analysis LG V3.Docx

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text

Load more

Baseline Assessment: Historical Mangrove Forest Cover Change Analysis in DENR/B+WISER Program Sites Philippines Biodiversity and Watersheds Improved for Stronger Economy and Ecosystem Resilience (B+WISER) 28 January 2015 FOURTH QUARTER PROGRESS REPORT FY July - September 2014 Philippines Biodiversity and Watersheds Improved for Stronger Economy and Ecosystem Resilience (B+WISER) 30 October 2014 Draft - This publication was produced for review by the United States Agency for International Development. It was prepared by Chemonics International Inc. The Biodiversity and Watersheds Improved for Stronger Economy and Ecosystem Resilience Program is funded by the USAID, Contract No. AID-492-C-13-00002 and implemented by Chemonics International in association with: Fauna and Flora International (FFI) Haribon Foundation World Agroforestry Center (ICRAF) The author’s views expressed in this publication do not necessarily reflect the views of the United States Agency for International Development or the United States Government. Baseline Assessment: Historical Mangrove Forest Cover Change Analysis in DENR/B+WISER Program Sites Philippines Biodiversity and Watersheds Improved for Stronger Economy and Ecosystem Resilience (B+WISER) Program Implemented with: Department of Environment and Natural Resources Other National Government Agencies Local Government Units and Agencies Supported by: United States Agency for International Development Contract No.: AID-492-C-13-00002 Managed by: Chemonics International Inc. in partnership with Fauna & Flora International (FFI) Haribon Foundation World Agroforestry Center (ICRAF) 28 January 2015 TABLE OF CONTENTS Table of Contents ............................................................................................................. i List of tables .................................................................................................................... ii List of Figures................................................................................................................. iv Acronyms ........................................................................................................................ v Executive Summary ...................................................................................................... vii 1. Introduction ................................................................................................................ 1 2. Methods ..................................................................................................................... 3 A. Data Sources ........................................................................................... 3 B. Spatial Analysis ........................................................................................ 4 C. Scope and Limitations .............................................................................. 4 3. Results and Discussion .............................................................................................. 5 A. Summary of Historical Mangrove Cover Change in B+WISER Mangrove Sites Using the 2000 and 2010 Long et al. Mangrove Cover Dataset .............................................................................................................. 5 A.1 Polillo Group of Islands ................................................................................ 8 A.2 Ragay Gulf – Pagbilao, Quezon – San Miguel Bay ................................... 11 A.3 Verde Island Passage ................................................................................ 15 A.4 Eastern Catanduanes ................................................................................ 19 A.5 Iloilo Strait (Iloilo and Guimaras) ................................................................ 23 A.6 Siargao Island .............................................................................................. 27 A.7 Basilan........................................................................................................ 31 A.8 Tawi-tawi .................................................................................................... 35 A.9 Leyte – Samar – Eastern Samar ................................................................ 39 B. Summary of Historical Mangrove Cover Change in B+WISER Mangrove Sites Using the 2003 and 2010 NAMRIA Mangrove Cover Dataset ............................................................................................................ 43 B.1 Polillo Group of Islands .............................................................................. 45 B.2 Ragay Gulf – Pagbilao, Quezon – San Miguel Bay ................................... 48 B.3 Verde Island Passage ................................................................................ 52 B.4 Catanduanes .............................................................................................. 55 B.5 Iloilo Strait .................................................................................................. 57 B.6 Siargao Island .............................................................................................. 60 B.7 Basilan........................................................................................................ 63 B.8 Tawi-Tawi ................................................................................................... 66 B.9 Leyte – Samar – Eastern Samar ................................................................ 69 HISTORICAL MANGROVE FOREST COVER CHANGE ANALYSIS IN DENR/B+WISER PROGRAM SITES | i Summary and Conclusions............................................................................................ 73 References .................................................................................................................... 75 Annex A. B+WISER Directory ................................................................................ 76 LIST OF TABLES Table 1. Mangrove cover change statistics showing loss, gain and no change from 2000 to 2010 across the provinces where the B+WISER sites are located. .............. 6 Table 2. Summary of mangrove cover change from 2000 to 2010 across the provinces where B+WISER mangrove sites are located. ........................................................... 7 Table 3. Mangrove cover change statistics from 2000 to 2010 of Polillo Group of Islands, and the respective target municipalities. ....................................................... 8 Table 4. Net mangrove cover and annual rate of net change of Polillo Group of Islands, and the respective target municipalities. .................................................................... 9 Table 5. Mangrove cover change statistics from 2000 to 2010 of Ragay Gulf, Pagbilao in Quezon & San Miguel Bay, and the respective target municipalities. .................. 12 Table 6. Net mangrove cover and annual rate of net change of Ragay Gulf, Pagbilao in Quezon & San Miguel Bay, and the respective target municipalities. ...................... 13 Table 7. Mangrove cover change statistics from 2000 to 2010 of the Verde Island Passage, and the respective target municipalities. .................................................. 16 Table 8. Net mangrove cover and annual rate of net change of Verde Island Passage, and the respective target municipalities. .................................................................. 17 Table 9. Mangrove cover change statistics from 2000 to 2010 of Eastern Catanduanes, and the respective target municipalities. ........................................... 20 Table 10. Net mangrove cover and annual rate of net change of Eastern Catanduanes, and the respective target municipalities. .................................................................. 21 Table 12. Net mangrove cover and annual rate of net change of Iloilo Strait, and the respective target municipalities. ............................................................................... 25 Table 13. Mangrove cover change statistics from 2000 to 2010 of Siargao Island (Surigao del Norte), and the respective target municipalities. .................................. 28 Table 14. Net mangrove cover and annual rate of net change of Siargao Island (Surigao del Norte), and the respective target municipalities. ................................................ 29 Table 15. Mangrove cover change statistics from 2000 to 2010 of Basilan, and the respective target municipalities. ............................................................................... 32 Table 16. Net mangrove cover and annual rate of net change of Basilan, and the respective target municipalities. ............................................................................... 33 Table 17. Mangrove cover change statistics from 2000 to 2010 of Tawi-tawi, and the respective target municipalities. ............................................................................... 36 Table 18. Net mangrove cover and annual rate of net change of Tawi-tawi, and the respective target municipalities. ............................................................................... 37 Table 19. Mangrove cover change statistics from 2000 to 2010 of selected municipalities in Leyte, Samar and Eastern Samar, and the respective target municipalities ............................................................................................................ 40 Table 20. Net mangrove cover and annual rate of net change of of Leyte, Samar and Eastern Samar, and the respective target municipalities. .......................................
Recommended publications
  • POPCEN Report No. 3.Pdf

    POPCEN Report No. 3.Pdf

    CITATION: Philippine Statistics Authority, 2015 Census of Population, Report No. 3 – Population, Land Area, and Population Density ISSN 0117-1453 ISSN 0117-1453 REPORT NO. 3 22001155 CCeennssuuss ooff PPooppuullaattiioonn PPooppuullaattiioonn,, LLaanndd AArreeaa,, aanndd PPooppuullaattiioonn DDeennssiittyy Republic of the Philippines Philippine Statistics Authority Quezon City REPUBLIC OF THE PHILIPPINES HIS EXCELLENCY PRESIDENT RODRIGO R. DUTERTE PHILIPPINE STATISTICS AUTHORITY BOARD Honorable Ernesto M. Pernia Chairperson PHILIPPINE STATISTICS AUTHORITY Lisa Grace S. Bersales, Ph.D. National Statistician Josie B. Perez Deputy National Statistician Censuses and Technical Coordination Office Minerva Eloisa P. Esquivias Assistant National Statistician National Censuses Service ISSN 0117-1453 FOREWORD The Philippine Statistics Authority (PSA) conducted the 2015 Census of Population (POPCEN 2015) in August 2015 primarily to update the country’s population and its demographic characteristics, such as the size, composition, and geographic distribution. Report No. 3 – Population, Land Area, and Population Density is among the series of publications that present the results of the POPCEN 2015. This publication provides information on the population size, land area, and population density by region, province, highly urbanized city, and city/municipality based on the data from population census conducted by the PSA in the years 2000, 2010, and 2015; and data on land area by city/municipality as of December 2013 that was provided by the Land Management Bureau (LMB) of the Department of Environment and Natural Resources (DENR). Also presented in this report is the percent change in the population density over the three census years. The population density shows the relationship of the population to the size of land where the population resides.

  • Oeconomics of the Philippine Small Pelagics Fishery

    l1~~iJlLll.I.~lJ~ - r--I ~ ~~.mr'l ~ SH I 207 TR4 . #38c~.1 .I @)~~[fi]C!ffi]m @U00r@~O~~[ro)~[fi@ \ . §[fi]~~~~~~ ~~ II "'-' IDi III ~~- ~@1~ ~(;1~ ~\YL~ (b~ oeconomics of the Philippine Small Pelagics Fishery Annabelle C. ad Robert S. Pomeroy Perlita V. Corpuz Max Agiiero INTERNATIONAL CENTER FOR LIVING AQUATIC RESOURCES MANAGEMENT MANILA, PHILIPPINES 407 Biqeconomics of the Philippine Small Pelagics Fishery 7?kq #38 @-,,/ JAW 3 1 1996 Printed in Manila, Philippines Published by the International Center for Living Aquatic Resources Management, MCPO Box 2631, 0718 Makati, Metro Manila, Philippines Citation: Trinidad, A.C., R.S. Pomeroy, P.V. Corpuz and M. Aguero. 1993. Bioeconomics of the Philippine small pelagics fishery. ICLARM Tech. Rep. 38, 74 p. ISSN 01 15-5547 ISBN 971-8709-38-X Cover: Municipal ringnet in operation. Artwork by O.F. Espiritu, Jr. ICLARM Contribution No. 954 CONTENTS Foreword ................................................................................................................................v Abstract ..............................................................................................................................vi Chapter 1. Introduction ......................................................................................................1 Chapter 2 . Description of the Study Methods ................................................................4 Data Collection ....................................................................................................................4 Description
  • European Commission Promoting Renewable Energy for Climate

    European Commission Promoting Renewable Energy for Climate

    Contracting Authority: European Commission Promoting Renewable Energy for Climate Change Adaptation and Mitigation in the Philippines ANNEX A.2 – Full application form1 Budget line: 21.0202002 Reference: EuropeAid/158417/DD/ACT/PH Dossier No (for official use only) 1 To obtain information about the deadline for submission, please see section 2.2 of the guidelines. 2 Any reference to European Union financing also refers to European Development Fund grants where applicable. EuropeAid/158417/DD/ACT/PH Page 1 of 60 15 January 2016 Annex A.2 - Full Application with tracked changes 061218.doc Table of contents 1 General information ............................................................................................................... 3 2 The action ................................................................................................................................ 3 2.1. Description of the action................................................................................................................ 3 2.1.1. Description (max 13 pages) .............................................................................................. 3 2.1.2. Methodology (max 5 pages) ........................................................................................... 15 2.1.3. Indicative action plan for implementing the action (max 4 pages) ................................. 20 2.1.4. Sustainability of the action (max 3 pages) ...................................................................... 25 2.1.5. Logical Framework ........................................................................................................
  • Island Echoes

    Island Echoes

    ISLAND ECHOES Summary of Ministry Needs “Not to us, LORD, not to us is a publication of but to your name be the glory, Pacific Mission Aviation Personnel Needs: because of your love and faithfulness.” (PMA). Missionary Pastors Psalm 115:1 Administrative Assistants for Guam and Pohnpei Dear Friends, Issue Youth Workers for island churches 2-2017 (July) Boat Captain for medical ship M/V Sea Haven You will notice that this issue of Island Echoes highlights our ministry in the Boat Mechanic for medical ship M/V Sea Haven Philippines. We are celebrating 35 years of God’s amazing goodness and faithfulness On our Cover Missionary Pilots/Mechanics for Micronesia/Philippines through PMA’s work in the islands of the Philippines. PMA ministries in the Computer personnel for radio, media and print ministry You will read the history of how PMA began, our move from the Southern Philippines Short term: Technician for Heidelberg GTO 52: for Philippines to the North as we experienced God’s leading, His steadfastness, His repair, maintenance and calibration at Good News Press. never-ending provision, and what He is continuing to do today. Editors Melinda Espinosa Infrastructure Needs: PMF churches are now established in different islands and villages of the Polillo Sylvia Kalau Hangar for Palau: With the property lease for the hangar Island group – and still more doors are opening for us to minister. The challenge for Sabine Musselwhite approved, plans are underway to construct the hangar. We us is for more workers in the field. Will you please pray with us that the Lord of the need to raise the following: Phase I: $300,000; Phase II: harvest would raise up men and women who would take the challenge of serving in Layout $300,000.
  • An Annotated Checklist of Philippine Flatfish: Ecological Implications3'

    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.
  • Counter-Insurgency Vs. Counter-Terrorism in Mindanao

    Counter-Insurgency Vs. Counter-Terrorism in Mindanao

    THE PHILIPPINES: COUNTER-INSURGENCY VS. COUNTER-TERRORISM IN MINDANAO Asia Report N°152 – 14 May 2008 TABLE OF CONTENTS EXECUTIVE SUMMARY AND RECOMMENDATIONS................................................. i I. INTRODUCTION .......................................................................................................... 1 II. ISLANDS, FACTIONS AND ALLIANCES ................................................................ 3 III. AHJAG: A MECHANISM THAT WORKED .......................................................... 10 IV. BALIKATAN AND OPLAN ULTIMATUM............................................................. 12 A. EARLY SUCCESSES..............................................................................................................12 B. BREAKDOWN ......................................................................................................................14 C. THE APRIL WAR .................................................................................................................15 V. COLLUSION AND COOPERATION ....................................................................... 16 A. THE AL-BARKA INCIDENT: JUNE 2007................................................................................17 B. THE IPIL INCIDENT: FEBRUARY 2008 ..................................................................................18 C. THE MANY DEATHS OF DULMATIN......................................................................................18 D. THE GEOGRAPHICAL REACH OF TERRORISM IN MINDANAO ................................................19
  • Earthquake Plan Swiss Community

    Earthquake Plan Swiss Community

    Embassy of Switzerland in the Philippines Our reference: 210.0-2-MAV Phone: + 632 757 90 00 Fax: + 632 757 37 18 Manila, November 2010 Earthquake Plan WHAT IS AN EARTHQUAKE? 1. Earthquakes are caused by geological movements in the earth which release energy and can cause severe damage due to ground vibration, surface faulting, tectonic uplifts or ground ruptures. These can also trigger tsunamis (large sea- waves), landslides, flooding, dam failures and other disasters up to several hundred kilometres from the epicentre. 2. These occur suddenly and usually without warning. Major earthquakes can last minutes, but as a rule, these last only a few ten seconds. All types of earthquakes are followed by aftershocks, which may continue for several hours or days, or even years. It is not uncommon for a building to survive the main tremor, only to be demolished later by an aftershock. 3. The actual movement of the ground during an earthquake seldom directly causes death or injury. Most casualties result from falling objects and debris or the collapse of buildings. The best protection for buildings is solid construction and a structural design intended to withstand an earthquake. 4. An initial shock of an earthquake is generally accompanied by a loud rumbling noise, and it is not uncommon that people rush outside of the building to see what is happening, only to be caught unprepared by the subsequent and potentially more dangerous shocks and falling debris. EARTHQUAKES AND THEIR EFFECTS Intensity Force Effects on Persons Buildings Nature I Unnoticed Not noticeable Very light noticed here and there II III Light Mainly noticed by persons in relaxing phase IV Medium Noticed in houses; Windows are vibrating waking up V Medium to strong Noticed everywhere in the open.
  • Are Insular Populations of the Philippine Falconet (Microhierax Erythrogenys) Steps in a Cline?

    Are Insular Populations of the Philippine Falconet (Microhierax Erythrogenys) Steps in a Cline?

    The Condor 115(3):576–583 The Cooper Ornithological Society 2013 ARE INSULAR POPULATIONS OF THE PHILIPPINE FALCONET (MICROHIERAX ERYTHROGENYS) STEPS IN A CLINE? TODD E. KATZNER1,2,5 AND NIGEL J. COLLAR3,4 1Division of Forestry and Natural Resources, West Virginia University, Morgantown, WV 26506-6125 2USDA Forest Service, Timber and Watershed Laboratory, Parsons, WV 3BirdLife International, Cambridge CB3 0NA, UK 4Natural History Museum, Tring, Herts HP23 6AP, UK Abstract. Founder effects, new environments, and competition often produce changes in species colonizing islands, although the resulting endemism sometimes requires molecular identification. One method to identify fruitful areas for more detailed genetic study is through comparative morphological analyses. We measured 210 museum specimens to evaluate the potential morphological consequences of colonization across the Philippine archipelago by the Philippine Falconet (Microhierax erythrogenys). Measurements of both males and females dif- fered clearly from island to island. Univariate and multivariate analysis of characteristics showed a latitudinal gra- dient, with the bill, wing, and tail of southern birds being larger than those of northern birds, forming the pattern of a stepped cline across a succession of islands. The stepped gradient in morphology and extensive differences between islands we observed provide evidence for multiple perspectives on phylogeny, including concordance with aggregate complexes expected on the basis of sea-level fluctuations. However, calculation of diagnosability indices did not support subspecific designations. Sex-specific dominance and dispersal patterns may explain this unusual south-to-north stepped cline, and they also provide a useful format for understanding biogeographical patterns by island. Finally, these morphological data suggest a potentially fruitful area for future genetic studies.
  • ADDRESSING ILLEGAL WILDLIFE TRADE in the PHILIPPINES PHILIPPINES Second-Largest Archipelago in the World Comprising 7,641 Islands

    ADDRESSING ILLEGAL WILDLIFE TRADE in the PHILIPPINES PHILIPPINES Second-Largest Archipelago in the World Comprising 7,641 Islands

    ADDRESSING ILLEGAL WILDLIFE TRADE IN THE PHILIPPINES PHILIPPINES Second-largest archipelago in the world comprising 7,641 islands Current population is 100 million, but projected to reach 125 million by 2030; most people, particularly the poor, depend on biodiversity 114 species of amphibians 240 Protected Areas 228 Key Biodiversity Areas 342 species of reptiles, 68% are endemic One of only 17 mega-diverse countries for harboring wildlife species found 4th most important nowhere else in the world country in bird endemism with 695 species More than 52,177 (195 endemic and described species, half 126 restricted range) of which are endemic 5th in the world in terms of total plant species, half of which are endemic Home to 5 of 7 known marine turtle species in the world green, hawksbill, olive ridley, loggerhead, and leatherback turtles ILLEGAL WILDLIFE TRADE The value of Illegal Wildlife Trade (IWT) is estimated at $10 billion–$23 billion per year, making wildlife crime the fourth most lucrative illegal business after narcotics, human trafficking, and arms. The Philippines is a consumer, source, and transit point for IWT, threatening endemic species populations, economic development, and biodiversity. The country has been a party to the Convention on Biological Diversity since 1992. The value of IWT in the Philippines is estimated at ₱50 billion a year (roughly equivalent to $1billion), which includes the market value of wildlife and its resources, their ecological role and value, damage to habitats incurred during poaching, and loss in potential
  • Co-Creating Peace in Conflict-Affected Areas in Mindanao.Pdf

    Co-Creating Peace in Conflict-Affected Areas in Mindanao.Pdf

    Copyright © 2013 by The Asian Institute of Management Published by The AIM-TeaM Energy Center for Bridging Leadership of the AIM-Scientific Research Foundation, Inc. All rights reserved. This collation of narratives, speeches, documents is an open source document for all development practitioners within the condition that publisher is cited and notified in writing when material is used, reproduced, distributed, or transmitted in any form or by any means, including photocopying, recording, or other electronic or mechanical methods. Requests for permission should be directed to [email protected], or mailed to 3rd Level, Asian Institute of Management Joseph R. McMicking Campus, 123 Paseo de Roxas, MCPO Box 2095, 1260 Makati City, Philippines. ISBN No. Book cover photo: Three doves just released by a group of Sulu residents, taken on June 8, 2013 Photographed by: Lt. Col. Romulo Quemado CO-CREATING PEACE IN CONFLICT-AFFECTED MINDANAO A FELLOW AT A TIME VOLUME 1 AIM TeaM Energy Center for Bridging Leadership www.bridgingleadership.aim.edu Asian Institute of Management 123 Paseo de Roxas Street, Makati City 1226, Philippines Tel. No: +632 892.4011 to 26 Message Greetings! In behalf of the Asian Institute of Management, I am honored to present to everyone this publication, entitled “Co-Creating Peace in Mindanao (A Fellow at a Time),” a product of one of our most renowned leadership programs offered by the AIM Team Energy Center for Bridging Leadership. The Mindanao Bridging Leaders Program (MBLP) began in 2005 and is hinged on the Bridging Leadership Framework. The fellows- who graduated the program are executive officers and distinguished directors, representing different sectors from the government, non-gov ernment organizations, civil society organizations, security, and others.
  • Of the Philippine Islands 143-162 ©Naturhistorisches Museum Wien, Download Unter

    Of the Philippine Islands 143-162 ©Naturhistorisches Museum Wien, Download Unter

    ZOBODAT - www.zobodat.at Zoologisch-Botanische Datenbank/Zoological-Botanical Database Digitale Literatur/Digital Literature Zeitschrift/Journal: Annalen des Naturhistorischen Museums in Wien Jahr/Year: 2003 Band/Volume: 104B Autor(en)/Author(s): Zettel Herbert, Yang Chang Man, Gapud V.P. Artikel/Article: The Hydrometridae (Insecta: Heteroptera) of the Philippine Islands 143-162 ©Naturhistorisches Museum Wien, download unter www.biologiezentrum.at Ann. Naturhist. Mus. Wien 104 B 143- 162 Wien, März 2003 The Hydrometridae (Insecta: Heteroptera) of the Philippine Islands V.P. Gapud*, H. Zettel** & CM. Yang*** Abstract In the Philippine Islands the family Hydrometridae is represented by four species of the genus Hydrometra LATREILLE, 1796: H.julieni HUNGERFORD & EVANS, 1934, H. lineata ESCHSCHOLTZ, 1822, H. mindoroensis POLHEMUS, 1976, and H. orientalis LUNDBLAD, 1933. Distribution data and habitat notes from literature and collections are compiled. The following first island records are presented: Hydrometra lineata for Pollilo, Marinduque, Catanduanes, Masbate, Romblon, Sibuyan, Panay, Siquijor, Pacijan, Hiktop, Dinagat, and Olutanga; H. mindoroensis for Polillo, Marinduque, Catanduanes, Ticao, Masbate, Negros, Siquijor, Cebu, Bohol, Samar, Biliran, Camiguin, Bayagnan, and Busuanga; H. orientalis for Mindoro, Busuanga, and Palawan. A key to the species is provided and illustrated with SEM-photos of the anteclypeus and the ter- minalia of males and females. Key words: Heteroptera, Hydrometridae, Hydrometra, distribution, first record, key, habitat, Philippines. Zusammenfassung Auf den Philippinen ist die Familie Hydrometridae mit vier Arten der Gattung Hydrometra LATREILLE, 1796 vertreten: H.julieni HUNGERFORD & EVANS, 1934, H. lineata ESCHSCHOLTZ, 1822, H. mindoroensis POLHEMUS, 1976 und H. orientalis LUNDBLAD, 1933. Verbreitungs- und Lebensraumangaben aus der Lite- ratur und aus Sammlungen werden zusammengefaßt.
  • What's in a Tangab?

    What's in a Tangab?

    What’s in a tangab? TU Bagarinao and CP Recente [email protected] SEAFDEC FishWorld SEAFDEC Aquaculture Department Tigbauan, Iloilo, Philippines From the ongoing research project: The tangab fishery in Iloilo Strait: operations, catch volume and species composition, economic importance, and ecological impact Please visit the tangab exhibit at FishWorld. This is a tangab or palupad Tangab drawn by Sid Tendencia Operation • Tangab nets are operated in Iloilo Strait between Panay Island and Guimaras Island in waters 10-20 meters deep 1-4 kilometers offshore. • Tangab nets are set up in groups of 2-12 per owner, depending on capital. • Fishing with tangab is done only during calm seas, weak winds, and no storms. • Tangab work by filtration of water and the nets are dropped only during periods of strong water currents, that is, 7-9 days around the full moon and 7-9 days around the new moon. • During an operation, the fishermen work from dusk till dawn. They drop the tangab Structure net in time for the flood tide into Iloilo Strait, a few hours • Tangab are large fixed before the night high tide. At filter nets held open by high tide, the fishermen haul coconut trunks driven into the nets up to harvest the catch. the sea bed. Before the tidal current reverses • The opening is usually 10 direction, fishermen may meters wide and 10 meters reverse the nets and drop them deep. again to catch fish during the • The net is 20-30 meters ebb tide. long to the cod end, with • The catch is brought to shore large mesh (10 cm) at the where many coastal residents mouth, smaller meshes at are waiting to buy the good the middle, and fine mesh fish, or ask for some free ‘trash (1-3 mm) at the cod end.