DOCSLIB.ORG

Carbon Storage and Nutrient Stocks Distribution of Three Adjacent Land Use Patterns in Lake Danao National Park, Ormoc, Leyte, Philippines

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
Carbon Storage and Nutrient Stocks Distribution of Three Adjacent Land Use Patterns in Lake Danao National Park, Ormoc, Leyte, Philippines Journal of Science, Engineering and Technology 5:1-14 (2017) Southern Leyte State University, Sogod, Southern Leyte, Philippines Carbon Storage and Nutrient Stocks Distribution of Three Adjacent Land Use Patterns in Lake Danao National Park, Ormoc, Leyte, Philippines Pearl Aphrodıte Bobon-Carnıce1* Suzette B. Lına2 1Natural Sciences Department Eastern Visayas State University Tacloban City, Leyte, Philippines 2Department of Soil Science, College of Agriculture and Food Science Visayas State University Visca, Baybay City, Philippines Abstract The country experienced drastic decrease of forest cover due to land use conversion, cutting of trees and doing agriculture to support food security. Secondary forests are an important component of land cover in the tropics, and when transformed or converted into another land-use, it is believed to have negative effects on some soil properties and forest ecosystem in general. A paired-area/space-for-time substitution approach was conducted to determine the changes in carbon storage: soil organic carbon (SOC) and total above ground biomass (TAGB), soil nutrient stocks and fertility status due to land use change. The study was conducted in Lake Danao National Park (LDNP), Ormoc City, Leyte, Philippines. Adjacent to the secondary forest (<1 km away), grassland and forest plantation land uses were chosen and sampled for possible changes on SOC, TAGB and nutrient stocks due to land use change. Results showed that conversion of forest to grassland and forest plantation decreased the organic carbon, exchangeable aluminum, exchangeable acidity, effective cation exchange capacity, TAGB while pH in H2O; exchangeable magnesium and potential cation exchange capacity increased when the forest was converted to grassland and forest plantation. Additionally, available P, base saturation, Ca, K, and Na increased while total N, and SOC stocks decreased when the forest was converted to grassland and forest plantation. This study indicates that conversion of forest to grassland and forest plantation greatly affected the SOC stocks, TAGB, soils nutrient stocks and fertility status. It also revealed that changes in soil properties largely depended upon the land use. Keywords: Andisol; forest plantation; grassland; organic carbon; secondary forest; total aboveground biomass Introduction marked effect on the interactions in detrital inputs, perturbations of the ecosystem and could have an associated change in C Terrestrial ecosystem is the major reservoir stocks and fluxes (Bolin and Sukumar, 2000; of carbon (C) in which its amount in the soil Lal, 2005). Such changes are important is greater than that in the living vegetation from the standpoint of desired soil quality, (Post et al., 2000). Anthropogenic activities sustainability, and on their influence on the such as changing the land use can have a *Correspondence: [email protected]; ORCID: 0000-0002-3622-0449 ISSN 2545-9732 Carnıce and Lina JSET Vol.5, 2017 atmospheric CO2 concentrations and global under secondary forest transformations in warming (Lal, 2004). However, understanding LNDP and related the SOC stocks with the of the estimation of carbon as part of the global aboveground biomass. carbon cycle in general, and understanding of soil carbon dynamics is still limited. Methodology There are few reported studies on the mechanisms and factors controlling the The Study Site stability of soil organic carbon (SOC) as affected by anthropogenic activity in the The study was conducted in LDNP, Ormoc tropics (Paul et al., 2008). However, there are City, Leyte (Figure 1) where the secondary only few studies that have been conducted forest is still preserved and intact and has an yet in the Philippines particularly in Leyte adjacent grassland and forest plantation site. province concerning the quantification of A paired-area or space-for-time substitution SOC under secondary forest transformations, approach (Paul et al., 2008; Asio, 1996; despite their large SOC sequestration Veldkamp et al., 2003) was employed with potentials. Thus, results of this study will the assumption that the adjacent grassland be useful in understanding the changes in (G) and forest plantation (FP) are land uses SOC, total above ground biomass (TAGB) converted from forest or secondary forest (F). and soil nutrient stocks as influenced by All adjacent sites were selected carefully to the transformation of secondary forest into have comparable soil physical and chemical different land use systems. This is also an properties, climate, parent material – i.e. important contribution to the databank for any change in soil properties is caused by greenhouse gas inventories as United Nations the land conversion (Veldkamp et al., 2003). Framework Convention on Climate Change The secondary forest was considered as (UNFCC) and other international agencies the reference land use. Climate, slope, where policy agenda on greenhouse gas drainage, and geographical coordinates mitigation has been advocated. Moreover, (using GPS) were determined in the field or the results will also be useful in determining from secondary sources such as maps and/or the SOC sequestration potential of Andisol in existing publications. Lake Danao National Park (LDNP). LDNP is one of the forest reserves in the Philippines Field investigation, Soil Sampling where you can at the same time find areas and Laboratory Analysis that have been converted to grassland and forest plantation, making the location very A stratified random sampling scheme was suitable for this study’s methodology. An carried out in choosing the sub-sampling understanding of the results of this study can points for composite soil collection. In every bring awareness to people that conversion of one hectare area of each land use, four forest to grassland and forest plantation would plots (20m x 20m) were randomly prepared have both positive and negative effects on which served as replications. In each plot, SOC stocks and on soil nutrient status. five sub-sampling points were randomly The study hypothesized that conversion of selected with an area 25 meters apart. Using secondary forest to grassland with similar a soil auger, soil samples in each of the Andisol soils will bring a decline in SOC sub-sampling points were collected uniformly stocks and nutrient reserves while the land from the following depths: 0–20 cm, 20–40 use change to forest plantation will lead to an cm, and 40–60 cm. Collected soil samples increase of these parameters again. Thus, were brought immediately to the screen this study quantified and evaluated the SOC house of the Department of Soil Science, stocks, TAGB and nutrient stocks of soils Visayas State Univeristy, Baybay City, Leyte, 2 Carnıce and Lina JSET Vol.5, 2017 Figure 1. (A) Map of Leyte (Redrawn from Department of Environment and Natural Resources); (B) Sketch of the sampling sites in LDNP, Ormoc City, Leyte, Philippines air-dried, pulverized and passed through a Total SOC (Mg C ha−1) = (%SOC)/(100) 2mm sieve. The following soil physical and x soil depth (m) x bulk density (Mg m−3) chemical properties were determined: bulk x 10000 m2 ha−1 density using paraffin clod method (Blake and Hartge, 1986); porosity by calculation In the F and FP, representative sampling of particle density and bulk density; particle plots (10 m x 10 m) were laid-out. All trees size distribution (soil texture) using pipette inside the plots with a diameter at breast height method (ISRIC, 1986); soil pH was analysed (dbh) of at least 10cm were identified and potentiometrically using soil and water ratio recorded. of 1:2.5 (ISRIC, 1986); delta pH using The aboveground tree biomass with KCl (pH KCl–pH H2O) (Mekaru & Uehara, dbh <10cm (Lasco and Sales, 2003) was 1972); soil organic matter (%) using modified calculated using allometric equation (Brown Walkley-Black method (Nelson and Sommers, and Lugo, 1990). Total aboveground biomass 1982); Total N (%) using the micro-Kjeldahl (trees): method; extractable P (mg kg−1) was determined according to Bray #2 method (Bray %Y = exp [-2.134 + 2.530*ln (dbh)] and Kurtz, 1945; Murphy and Riley, 1945); cation exchange capacity (CEC) using 1N Where: NH OAc adjusted to pH 7.0 method (ISRIC, 4 • Y = biomass per tree in kg; 1986) with some modifications; exchangeable 3+ + −1 acidity (Acidity (Al and H ) (cmolc kg ) • dbh = diameter at breast height in (Thomas, 1982) and exchangeable K, Ca, centimeters Mg (mg kg−1) was quantified using Atomic −1 Absorption Spectrophotometer (AAS) (Varian C storage (t ha ) = Total biomass/ha x 0.45 Spectra 220 FS) reading. SOC contents were analyzed for the specified three depths from Aboveground and root biomass from 1 each land use. SOC stock was calculated m x 1 m plot at each grassland site were using the equation. determined. All grasses found within the plot were collected. The harvested grasses were washed thoroughly with tap water and then 3 Carnıce and Lina JSET Vol.5, 2017 distilled water. After which, fresh weight was as Typic Hapludand under the soil order determined. Representative samples were Andisols (USDA, 2003) and some evidences oven-dried at 65◦C. The carbon stock of the are presented in Table 1 along with other grass biomass was calculated with following characteristics of the site. Soil profile (cambic formula: soil horizon) development in F is poor and the area has common rock outcrops. Dipterocarp tree species are dominant in the secondary WC = WO x 0.5 forest. Based on the interview of the caretaker of LDNP, the conversion of forest occurred in Where: 1970s. G is located in the same volcanic hill which is less than 700 m away from • WC = Weight of carbon in grass biomass the secondary forest (F). FP, with less than (g); 300 m distance from F, was planted with Gymnostoma phumphianum in 1971 and was • WO = Oven-dry weight of aboveground biomass; not disturbed since then. Ormoc highlands climate is Type II in the Coronas climate • 0.5 = Estimated C percentage in classification (Asio, 1996). The presence plant biomass (Sarmiento et al., 2005; of the Central Cordillera of Leyte delineates Redondo, 2007) eastern side of the range having slightly different climate from that of the western side.
Load more

Recommended publications
  • Characteristics, Threats and Management of Philippine Wetlands 필리핀 습지의 특성, 위협 및 관리
    Journal of Wetlands Research ISSN 1229-6031 (Print) / ISSN 2384-0056 (Online) Vol. 18, No. 3, August 2016, pp. 250-261 DOI http://dx.doi.org/10.17663/JWR.2016.18.3.250 Characteristics, Threats and Management of Philippine Wetlands Shemelyn M. Sespeñe†･Marla Maniquiz-Redillas･Lee-Hyung Kim･Yun-wook Choo Department of Civil and Environmental Engineering, Kongju National University Cheonan City, Korea 필리핀 습지의 특성, 위협 및 관리 Shemelyn M. Sespeñe†･Marla Maniquiz-Redillas･김이형･추연욱 Department of Civil and Environmental Engineering, Kongju National University Cheonan City, Korea (Received : 22 June 2016, Revised: 02 August 2016, Accepted: 02 August 2016) Abstract The Philippines is a naturally water-rich archipelago capable of sustaining its ecological goods and providing services and needs of its people. Several waterbodies have been declared as natural wetlands in the country supporting the needs of community like water and food. In this study, 65 natural wetlands were considered including six sites that were identified as ‘Wetlands of International Importance’ such as Naujan Lake National Park, Agusan Marsh Wildlife Sanctuary, Olango Island Wildlife Sanctuary, Tubbataha Reefs Natural Park, Las Piñas-Parañaque Critical Habitat and Ecotourism Area and Puerto Princesa Subterranean River National Park. There are 22 wetland types presented in this research categorizing the Philippine wetlands. Philippine wetlands are now facing tremendous challenges such as land use conversion, abuse of resources, pollution coming from domestic, industrial and agricultural activities, and climate change. This paper provides an overview of Philippine wetlands in terms of their characteristics and components, impacts in the ecosystem, and the challenges they are dealing with.
    [Show full text]
  • Limnology of Lake Wood: an Ancestral Lake of the Subanen Tribe
    Philippine Journal of Science 150 (5): 1231-1243, October 2021 ISSN 0031 - 7683 Date Received: 14 Dec 2020 Limnology of Lake Wood: An Ancestral Lake of the Subanen Tribe Marjohn Y. Baludo1*, Rey Donne S. Papa3, and Francis S. Magbanua2 1Institute of Environmental Science and Meteorology; 2Institute of Biology University of the Philippines Diliman, Quezon City 1101 Philippines 3Department of Biological Sciences, College of Science; and Research Center for the Natural and Applied Sciences and the Graduate School University of Santo Tomas, Manila 1015 Philippines Relatively limited information exists on Lake Wood’s limnology and ecology, an ancestral lake of the Subanens. Here, we provide a limnological characterization of the lake – exploring its physical, chemical, and biological features. The data on lake morphometry were gathered using an echosounder; lower depth water samples were collected using a Niskin water sampler for physicochemical analyses while surface water samples were collected at five sampling sites for phosphate (PO4) analysis; and zooplankton samples were collected at several depths through vertical towing in March–April 2019. Lake Wood, located at 320 m above sea level, has an extensive surface area covering 7.38 km2 with a maximum depth of 85 m. Lake water comes from rainfall, small rivers, and groundwater and empties into the Dumanquilas Bay via its only outlet – the Biswangan River. Land use of the lake is predominantly cultivated land. Moreover, based on the trophic state index (TSI), the lake’s current trophic status is eutrophic. During the study periods, thermocline and oxycline formed at 15 m below the surface of the lake.
    [Show full text]
  • Current Status and Prospects of Protected Areas in the Light of the Philippine Biodiversity Conservation Priorities
    Proceedings of IUCN/WCPA-EA-4 Taipei Conference March 18-23, 2002, Taipei, Taiwan CURRENT STATUS AND PROSPECTS OF PROTECTED AREAS IN THE LIGHT OF THE PHILIPPINE BIODIVERSITY CONSERVATION PRIORITIES Perry S. Ong, Ph. D. Fellow, Center for Applied Biodiversity Science, CI Science Director, Conservation International Philippines Associate Professor, Institute of Biology, UP Diliman I. INTRODUCTION The Philippines, the world’s second largest archipelago after Indonesia, covers a land area of about 300,000 km2 [1]. It is one of the 17 megadiversity countries, which between themselves contain 70 to 80 percent of global biodiversity [2]. Philippine rainforest is home to more than 1130 terrestrial wildlife species (Table 1) and between 10,000-13,000 species of plants [3] so far recorded, of which more than half are found nowhere else in the world. As such, the Philippines has also been described as Galapagos times ten [4]. It is also one of 25 global biodiversity hotspots [5, 6] with more than 97 percent of its original forest cover lost [7, 8]. In fact more original forests were lost in the last 50 years of the 20th century than what was lost in the previous 450 years combined [9]. Yet more new species are still being discovered on these islands than any other areas on earth in recent times [e.g., see 10, 11] Table 1. Diversity, endemism and conservation status of Philippine wildlife [11, 12, 13 14, 15, 16, 17, 18, 19, 20] No. of No. of Endemic % No. of No. of Threatened Species Species endemics Endemic Species Threatened Species Amphibians 101+ 79+ 78% 24 24 Reptiles 258+ 170+ 66% 8 4 Birds 5761 195+1 34% 74 59 Mammals 204+1, 2 111+1 54% 51 41 Total 1139+ 555+1 49% 157 128 95 Legend: + includes new species (38 species of amphibians, 35 species of reptiles; 15 species of mammals); 1 includes rediscovered species 2 25 species of dolphins, whales and dugong The country’s marine waters cover 2.21 M km2 with a coastline of 22,450 km and an estimated 27,000 km2 of coral reefs [21].
    [Show full text]
  • Biodiversity Assessment Study for New
    Technical Assistance Consultant’s Report Project Number: 50159-001 July 2019 Technical Assistance Number: 9461 Regional: Protecting and Investing in Natural Capital in Asia and the Pacific (Cofinanced by the Climate Change Fund and the Global Environment Facility) Prepared by: Lorenzo V. Cordova, Jr. M.A., Prof. Pastor L. Malabrigo, Jr. Prof. Cristino L. Tiburan, Jr., Prof. Anna Pauline O. de Guia, Bonifacio V. Labatos, Jr., Prof. Juancho B. Balatibat, Prof. Arthur Glenn A. Umali, Khryss V. Pantua, Gerald T. Eduarte, Adriane B. Tobias, Joresa Marie J. Evasco, and Angelica N. Divina. PRO-SEEDS DEVELOPMENT ASSOCIATION, INC. Los Baños, Laguna, Philippines Asian Development Bank is the executing and implementing agency. This consultant’s report does not necessarily reflect the views of ADB or the Government concerned, and ADB and the Government cannot be held liable for its contents. (For project preparatory technical assistance: All the views expressed herein may not be incorporated into the proposed project’s design. Biodiversity Assessment Study for New Clark City New scientific information on the flora, fauna, and ecosystems in New Clark City Full Biodiversity Assessment Study for New Clark City Project Pro-Seeds Development Association, Inc. Final Report Biodiversity Assessment Study for New Clark City Project Contract No.: 149285-S53389 Final Report July 2019 Prepared for: ASIAN DEVELOPMENT BANK 6 ADB Avenue, Mandaluyong City 1550, Metro Manila, Philippines T +63 2 632 4444 Prepared by: PRO-SEEDS DEVELOPMENT ASSOCIATION, INC C2A Sandrose Place, Ruby St., Umali Subdivision Brgy. Batong Malake, Los Banos, Laguna T (049) 525-1609 © Pro-Seeds Development Association, Inc. 2019 The information contained in this document produced by Pro-Seeds Development Association, Inc.
    [Show full text]
  • Nutrition Cluster Region VIII – OTP Sites in Leyte Last Update: 22
    Nutrition Cluster Region VIII – OTP Sites in Leyte Last update: 22. May 2014 No. of Nutrition Geographic Location of Barangays Covered OTP Schedule OTP Cluster Municipality OTP Sites Sites Partner 1 Barangay 109 V&G 96, 95-A, 95, 109, 109-A Tuesdays (PM) 2 Barangay 86 San Jose 88, 87, 86, 89, 90 Wednesdays (AM) 3 Barangay 99 Diit 93, 99, 100, 103 Thursdays (AM) 4 Barangay 37 Seawall 36, 37, 65, 66, 66-A, 38, 39 Mondays (whole day) 5 Barangay 62-A Sagkahan 60-A, 62, 62-A, 62-B, 63, 64, 59, 59-A, 59-B Fridays (AM) 6 Barangay 3 Nula-Tula 3, 74, 75, 73 Mondays (AM) 7 Tacloban Barangay Palanog Barangay Palanog 8 Barangay 44 Quarry 44, 59 Mondays (AM) 9 City Health Office 1, 4, 2, 23-A, 14, 6, 6-A, 5 Fridays (AM) 10 Barangay 84 Burayan 83, 83-A, 83-B, 83-C, 84, 85 11 Barangay 68 Anibong 67, 68, 69, 70, 91 Fridays (whole day) 12 Marasbaras 77, 78, 79, 80, 81, 82 13 ACF Suhi 101, 102, 105, 106 Tuesdays (whole day) 14 Sta. Elena 107, 108 15 Caibaan Motocross Bunkhouse, 95-A Mondays (AM) 16 Cabalawan 97, 98 1 Cabacungan Cabacungan, Alegre, Del Carmen, Batug Fridays (AM) Dulag ACF 2 Calubian Calubian, Camitoc, Bulod, Romualdez, San Wednesdays (PM) Isidro, Camote, Dacay 3 Combis Combis, Victory, Rawis, Highway, Cambula, Thursdays (AM) Camdao 4 Tabu Cabarasan, Cabatuan, Tabu, San Vicente, Maricum, Arado, Calipayan, Del Pilar Dulag 5 Tigbao San Antonio, Bolongtohan, San Agustin, Tuesdays (PM) Magsaysay, Gen.
    [Show full text]
  • Ecotourism Policy Options for the White Water Rafting in Cagayan De Oro River, Philippines: a Multi-Criteria Analysis
    3rd International Conference on Public Policy (ICPP3) June 28-30, 2017 – Singapore T02P17/Policy Tools for Environment and Social Policies Session 2 Policy Tools in Social Policy Ecotourism Policy Options for the White Water Rafting in Cagayan De Oro River, Philippines: A Multi-Criteria Analysis Author Catherine Roween C. Almaden Xavier University – Ateneo de Cagayan Philippines [email protected] Friday, June 30th 08:15 to 10:15 (Manasseh Meyer MM 3 - 4 (38)) Abstract The primary goal of this research paper is to determine the policy options on the basis of a multiple criteria analysis related to the regulation of the Cagayan de Oro River White Water Rafting Ecotourism in the Philippines. This study applied the Delphi Method in examining the policy alternatives capable of addressing the challenges of attaining sustainable ecotourism. More specifically, this research determined the criteria necessary for ecotourism policy evaluation. The evaluation of criteria for regulation of the Cagayan de Oro River White Water Rafting Ecotourism may lead to the formulation of better management strategies to protect natural and cultural resources and fulfill broader social objectives. Given the current challenges in attaining in sustainable ecotourism, reflected by sanitation problems, absence of amenities and poor infrastructure, analysis of policy options will improve decision-making and provide sustained revenues for management of the white water river rafting ecotourism sector. Policy options are reviewed as they apply to the Cagayan de Oro River White Water Rafting. Key results suggest the application of combination of policy options such as entrance fees for tourists and permits for operators are most preferred.
    [Show full text]
  • Estimation of the Recreational Value of Tourist Destinations in Camotes Islands Using Travel Cost Method
    Review of Socio-Economic Research and Development Studies 2019 Volume 3 No. 1, 19-37 ESTIMATION OF THE RECREATIONAL VALUE OF TOURIST DESTINATIONS IN CAMOTES ISLANDS USING TRAVEL COST METHOD Nymphmary Daphne J. Santiago1 and Ma. Salome B. Bulayog2 1 Philippine Statistics Authority (PSA) - Central Office, Diliman, Quezon City Metro Manila,, Philippines 2 Department of Economics (DOE), Visayas State University, Visca, Baybay City, Leyte. Determining the recreational value of tourist destinations is important because natural resources provide services that possess non-market values. They are considered as public goods, whereby society tends to overexploit and overconsume. In this regard, the valuation of four selected tourist destinations in Camotes Islands, Cebu, Philippines was determined. This study specifically aims to (1) estimate the demand function and consumer surplus of tourists, (2) determine the factors affecting the number of visits of tourists in every destination, (3) determine the tourists’ willingness to pay for entrance fee for each destination and (4) provide policy implications for local policy-makers and resource managers. On-site surveys were conducted to gather primary data. A total of 125 respondents were interviewed after selection through consecutive sampling. Using pseudo Poisson maximum likelihood estimator, results reveal that the recreational value of Buho Rock Resort, Lake Danao Park, Santiago Bay White Beach and Bukilat Cave in a year is PhP 617,468,921.00; PhP 199, 094,291.80; PhP 113, 304, 987.20 and PhP 408,021,345.90, respectively. These values can be considered as high recreational values implying the relevance of preserving and protecting these sites from overexploitation.
    [Show full text]
  • Three Essays on Meta-Analysis, Benefit Transfer, and Recreation Use Valuation
    AN ABSTRACT OF THE DISSERTATION OF Arvin B. Vista for the degree of Doctor of Philosophy in Forest Resources presented on June 10, 2010. Title: Three Essays on Meta-Analysis, Benefit Transfer, and Recreation Use Valuation. Abstract approved: _____________________________________________________________________ Randall S. Rosenberger This dissertation consists of three essays on meta-analysis, benefit transfer and recreation use valuation. The first two essays were based on the sportsfishing valuation literature in the US and Canada while the third essay was based on a study site in the Philippines and selected study sites from the US. The first essay evaluates the aggregation structure of primary research studies and its implications for benefit transfer using meta-regression analysis. Results indicate that single-site and regional studies should not be pooled without accounting for their differences in a meta- analysis. The second essay examines the implications of addressing dependency in the sportsfishing valuation literature using meta-regression analysis. Results indicate that median absolute percentage transfer error is lower for the meta-regression models based on a single value, i.e. average-set and best-set metadata than the meta-regression models based on all-set. The average-set and best-set are two treatments of the metadata for avoiding dependency. The third essay applies the methodological treatments learned from the first two essays to estimate the recreational value via benefit transfer of Taal Volcano Protected Landscape
    [Show full text]
  • Tilapia Seeding in Lake Danao Gets Flak
    Multi-awarded local newspaper May 2014 - SM Foundation Inc.s’ Super Awards October 2014 - PIRA’s Award for Excellent Media Coverage of Disaster PPI’s 2015 Civic Journalism Community Press Awards, Best in Fisheries Reporting-Weekly Listen to EV Mail sa Radyo! VOL. 19 NO. 18 ORMOC CITY P 15.00 at the newsstands MAY 28-JUNE 3, 2018 Monday to Friday Website address: www.evmailnews.net For feedback/inquiries: e-mail [email protected] 9:00 A.M. - 10:00 A.M. 107.1 Hot FM Ormoc Tilapia seeding in Lake Danao gets flak The tale of two pictures BY LALAINE MARCOS * Residents say they requested for it and are thankful ORMOC CITY – Incoming barangay chairman of Lake Danao Richard Impas does not see any- thing wrong with the seeding of 20,000 Tilapia fingerlings in the lake, saying this was not the first time it was done and this was to beef up the food supply of the earthquake affected village. Impas, in an interview, City agriculture officer said that the seeding or “re- Elena Mendoza, on the stocking” of the lake with other hand, said the criti- Tilapia (St. Peter’s Fish) cism against Gomez was was done on the request of unfair because Lake Danao the residents, who noticed had been restocked with that the Tilapia supply in Tilapia many times before, the lake has dwindled. “Sa even before his time as una, makakuha mi og tag mayor. It was the first time, 2-3 kilos, karon maayo gani however, that the activity og naay usa,” he said.
    [Show full text]
  • Annex VIII Casestudy1103 Ma
    IEA Hydropower Implementing Agreement Annex VIII - Hydropower Good Practices: Environmental Mitigation Measures and Benefits Case Study 11-03: Benefits due to Power Generation - Mahagnao Micro-hydro Demonstration Project, Philippines Key Issue: 11-Benefits due to Power Generation 14-Development of Regional Industries Climate Zone: Tropical Subjects: - Rural Electrification and Development of Regional Industries Effects: - Preservation of watershed area of Mahagnao Lake - Development of local industries - Promotion of Mahagnao Lake, a Natural Park including the power plant as an eco-tourism spot Project Name: Mahagnao Micro-hydro Demonstration Project Country: Bgy. Mahagnao, Burauen, Leyte, Philippines Implementing Party & Period - Project: Philippine Department of Energy, New Energy Foundation of Japan 2002 (Completion of Construction) - - Good Practice: Philippine Department of Energy, New Energy Foundation of Japan 2002 - Key Words: Preservation of the natural environment within Mahagnao Lake Abstract : The project aims to develop and demonstrate a small-scale hydro power plant which will provide adequate and reliable electricity to 3 off-grid upland barangays in the Philippines, together comprising around 300 households. The project also aims to prove the economic viability of small-scale hydro power plants in isolated communities through a simplified maintenance system. 1. Outline of the Project New Energy Foundation of Japan (NEF) conceptualized the 65 kW Mahagnao Micro-hydro Power Demonstration Plant under the authorization of the Ministry of Economy, Trade and Industry (METI) of Japan and the Philippine Department of Energy. NEF contracted Tokyo Electric Power Services Company, Inc. (TEPSCO) to conduct the feasibility study and serves as consultant for the project. The construction of the project started in June 2001 and was completed in February 2002.
    [Show full text]
  • Copepoda:Calanoida:Diaptomidae) in Lake Lanao (Mindanao Island, Philippines)
    Acta Manilana 62 (2014), pp. 19–23 Printed in the Philippines ISSN: 0065–1370 First record of the invasive Arctodiaptomus dorsalis (Marsh, 1907) (Copepoda:Calanoida:Diaptomidae) in Lake Lanao (Mindanao Island, Philippines) Ephrime B. Metillo1, Alyza M. Masorong1, Sittie Aisah N. Macabangkit1, Jill Rosette U. Licayan1, Dino T. Tordesillas2,5, & Rey Donne S. Papa2,3,4* 1Department of Biological Sciences, College of Science and Mathematics Mindanao State University-Iligan Institute of Technology, Iligan City 2The Graduate School, 3Research Center for the Natural and Applied Sciences 4Department of Biological Sciences, University of Santo Tomas España Boulevard, 1015 Manila 5Biology Department, St. Paul University-Quezon City, PHILIPPINES Arctodiaptomus dorsalis, originally described to be distributed within the Americas, has been documented to occupy a significant number of freshwater lakes in the Philippines. This paper reports the first record of A. dorsalis in Lake Lanao, an ancient lake located in the island of Mindanao. Based on its very high abundance, and positive correlation between the total body length of females with lake dissolved nitrates, phosphates and chlorophyll a concentration, A. dorsalis has clearly established itself in the lake ecosystem and has benefitted in the steady increase in the lake’s nutrient load. Lake Lanao’s endemic Tropodiaptomus gigantoviger may be considered as another calanoid species to be displaced by A. dorsalis given that a thorough examination of plankton samples collected from Lake Lanao have not yielded individuals of T. gigantoviger. Keywords: Invasive species, Copepods, Tropical Limnology, Non-Indigenous Zooplankton INTRODUCTION lake and its surrounding watershed have been declared as a National Park and Reserve [2], and One of the ancient lakes on Earth [1], Lake Lanao a priority area for conservation and research [4].
    [Show full text]
  • Downloaded from Brill.Com09/30/2021 07:33:50PM Via Free Access T  E,  145, 2002
    1 2 DIRK GASSMANN and MATTI HÄMÄLÄINEN 1Institute of Evolutionary and Ecological Sciences, Leiden University / National Museum of Natural History Leiden 2Department of Applied Biology, University of Helsinki A REVISION OF THE PHILIPPINE SUBGENUS RISIOCNEMIS (IGNEOCNEMIS) HÄMÄLÄINEN (ODONATA: PLATYCNEMIDIDAE)* Gassmann, D. & M. Hämäläinen, 2002. A revision of the Philippine subgenus Risiocnemis (Ig- neocnemis) Hämäläinen (Odonata: Platycnemididae). – Tijdschrift voor Entomologie 145: 213-266, figs. 1-140, tables 1-3. [ISSN 0040-7496]. Published 1 December 2002. The subgenus Igneocnemis Hämäläinen, 1991 of the Philippine damselfly genus Risiocnemis Cowley, 1934, is revised. Descriptions and diagnoses of both sex of all 15 previously recognized species are provided, and five new taxa are described: R. antoniae sp. n. and R. rubricercus sp. n. from northeastern Mindanao, R. pistor sp. n. from southeastern Mindanao, and R. kaiseri sp. n. and R. nigra sp. n. from Samar. The females of 11 species are described for the first time. Keys to males and females are provided. Based on extensive new collections from across the Philip- pine archipelago, the distribution of all species is mapped. Characters of the male ligula and ap- pendages and the female prothorax were studied by scanning electron microscopy. Correspondence: D. Gassmann, Institute of Evolutionary and Ecological Sciences, Section Theoretical Biology & Phylogenetics, Leiden University c/o National Museum of Natural His- tory (Naturalis), P.O. Box 9517, NL-2300 RA Leiden, The Netherlands. E-mail: [email protected] Key-words. – Platycnemididae; Calicnemiinae; Igneocnemis Hämäläinen; new species; Philip- pines. The genus Risiocnemis Cowley, 1934 is the most terial from the Roland Müller Expeditions to the speciose genus of the damselfly subfamily Calicnemi- Philippines was pouring in until 1997.
    [Show full text]