National Committee on Marine Sciences (NCMS)
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- Geomorphological and sedimentological records of recent storms on a volcaniclastic coast in Bicol, PhilippinesSoria, Janneli Lea A.; Switzer, Adam D.; Pile, Jeremy; Siringan, Fernando P.; Brill, Dominik; Daag, Arturo (Elsevier, 2021-08-01)Typhoon Durian in November 2006 was most notable for a series of devastating lahars that buried communities at the base of Mayon volcano in Bicol, Philippines. Typhoon Durian delivered extreme rainfall that remobilized volcanic debris that caused more than ~1200 deaths and extensive property damage. Although not as deadly as the lahar, Typhoon Durian also generated a storm surge that caused localized dune breaching on Malinao barrier sand spit in Lagonoy Gulf. In the absence of instrumental data of the storm surge, we used the geomorphical and sedimentary imprints including erosion scarps, washover fans and terraces to infer the inundation heights on the barrier spit. The surface elevations of washover fans, terraces and relic dunes indicate inundation heights above 1.5 m but not exceeding 3 m. Typhoon Durian's overwash deposit is characterized by typical washover fan stratigraphy, and exhibits horizontal to sub-horizontal lamination on the front to mid-fan and foreset stratification near the fan terminus. Subsurface stratigraphy using shore-normal ground penetrating radar (GPR) imaging reveals at least two buried erosional surfaces farther inland from the erosional surface of Typhoon Durian. Similar to Durian, the older erosional surfaces were probably sustained from previous typhoons. We infer that episodic erosional events most likely have repeatedly disrupted the prograding development of the Malinao barrier spit. Typhoon Durian highlights the exposure of volcanic landscapes to multiple hazards from cyclone landfall.This work comprises Earth Observatory of Singapore contribution no. 169. This research is supported by the Singapore National Research Foundation fellowship scheme (Grant No: NRF-RF2010-04) and the Singapore Ministry of Education under the Research Centres of Excellence initiative. This paper is a contribution to IGCP Project 639 Sea-Level Changes from Minutes to Millennia. We thank German Gonzaga of the Malinao Local Government Unit who facilitated our access to the study site. We also appreciate Cabria family for being our hospitable host during the series of field campaigns. We thank Mr. Raul Capistrano on behalf of NAMRIA for providing tide gauge data, and the Mines and Geosciences Bureau for granting us permit to transport sediments. We are grateful to Joan Reotita, Ronald Lloren, Yo Muan, Lester Valle, Arlene Tengonciang, Mabelline Cahulogan, Ariel Malonda, Antonio Ceres and Elmer Cas for their generous help in collecting field data.
- Estimation of the vertical phytoplankton distribution in the Philippine Sea: Influence of turbulence following passage of typhoonsCordero-Bailey, Kristina S.A.; Almo, Aldwin T.; David, Laura T.; Yñiguez, Aletta T. (Elsevier, 2022-11)The subsurface chlorophyll-a maximum (SCM) is a phenomenon that contributes significantly to the total primary production of the open ocean but it is not observable from remote sensing, thus primary production based on satellite information is highly underestimated. In a highly dynamic region such as the Philippine Sea, turbulence caused by tropical storms may exert significant impact on the SCM feature. In this study, we attempt to estimate the vertical phytoplankton profile in the Philippine Sea from remote sensing images by applying a generic quantitative approach. Generalized Additive Models (GAM) followed by Generalized Linear Models (GLMs) were used create predictive equations between response variables (Chl-a profile parameters) and predictor variables (RS parameters). GAM was able to predict integrated Chl-a biomass using photosynthetic active radiation (PAR), wind speed and wind stress, the depth of the Chl-a peak using surface Chl-a, wind speed and wind stress, and the baseline Chl-a concentration using sea surface temperature, sea surface salinity and PAR. GLM found wind stress and wind speed as significant predictors for integrated Chl-a biomass, while surface Chl-a, wind speed and wind stress were significant predictors for depth of the Chl-a peak. When the predictive equations were applied to 2020 monthly satellite images, they were seen to adequately estimate the offshore spatial distribution of the two Chl-a parameters. Increased turbulence due to high wind speed and wind stress during passage of tropical storms was seen to result in shallowing of the SCM and subsequent increase in Chl-a within the water column. These equations could be refined if long-term observational data was available. The capacity to estimate vertical distribution of primary productivity in the Philippines provides a means to better understand fisheries productivity and biogeochemical cycling in the region.
- A multi-framework analysis of stakeholders’ perceptions in developing a localized blue carbon ecosystems strategy in Eastern Samar, PhilippinesQuevedo, Jay Mar D.; Ferrera, Charissa M.; Faylona, Marie Grace Pamela G.; Kohsaka, Ryo (Springer Science and Business Media LLC, 2024-01-25)Blue carbon ecosystems (BCEs) are vital for global climate change mitigation and offer diverse local ecosystem co-benefits. Despite existing literatures on integrating national and international BCE agendas at the local level, the development and implementation of localized BCE strategies often lag behind. To provide insights on this knowledge gap, we present a case study conducted in Eastern Samar, Philippines. Employing a multi-framework analysis- encompassing DPSIR (drivers, pressures, state, impact, responses), SOAR (strengths, opportunities, aspirations, results), and PESTLE (political, economic, social, technological, legal, environmental) frameworks, stakeholder perceptions collected from focus group discussions highlight issues and challenges in developing and implementing a BCE strategy. Findings reveal that the aftermath of Typhoon Haiyan in 2013 in the study sites stimulated conservation efforts and raised awareness, but governance structures and policy enforcement influence the success and longevity of management and conservation efforts. Through the integration of multiple frameworks, this study outlined a potential localized BCE strategy, emphasizing both internal priorities such as stakeholder engagement and alternative livelihoods and external priorities related to policy and technological supports. While developed based on a specific case study in the Philippines, the proposed strategy is presented in a general manner, enabling its potential replication in other provinces in the Philippines or in countries with similar geographic settings.
- Oil siphoning from Terra Nova nearing completionMacairan, Evelyn (Philippine Star Printing Co., Inc., 2024-09-05)With a little over 100,000 liters of industrial oil left in the sunken motor tanker Terra Nova, the siphoning process is now almost complete, according to the Philippine Coast Guard. The PCG said that of the 1.4 million liters of industrial oil that the tanker was carrying when it sank in the waters off Limay, Bataan on July 25, salvor firm Harbor Star has so far siphoned close to 1.3 million liters of oily materials.
- Oil siphoning from Terra Nova stopped due to EntengMacairan, Evelyn (Philippine Star Printing Co., Inc., 2024-09-03)Rough sea conditions due to Tropical Storm Enteng prompted the Philippine Coast Guard (PCG) to stop the oil siphoning operations on the sunken motor tanker Terra Nova yesterday. “The contracted salvor, Harbor Star, secured all siphoning lines and containment equipment, closed all hot taps and postponed the transfer of oily waste,” the PCG said.
- Karding aftermath: Veggie, fish, rice prices to go up 20%Campos, Othel; Araja, Rio (Philippine Manila Standard Publishing, Inc., 2022-09-30)Prices for vegetables, fish and even rice could shoot up by as much as 20 percent as a result of the damage wrought by super typhoon Karding, the Department of Agriculture (DA) warned Thursday. Agriculture Undersecretary Domingo Panganiban said in an interview that the country’s rice granary, Central Luzon, sustained severe damage during the typhoon, resulting in the loss of 20 percent of the standing crop.
- 200 Antique fisherfolk to get materials to repair boats(Panay News, Inc., 2022-11-11)The Bureau of Fisheries and Aquatic Resources (BFAR) in Region 6 will provide repair materials worth P10,000 each to 200 fisherfolk whose boats were badly damaged during the onslaught of Severe Tropical Storm “Paeng” in the last week of October. BFAR Antique head Richard Cordero, in an interview Friday, said they were finalizing the damage report for the BFAR central office to provide repair materials so the fishermen can resume their livelihood. “Based on our initial report, there are 600 fisherfolk whose fishing boats were damaged, but we are prioritizing only 200 of them who really need the repair materials,” he said.
- Typhoon agriculture damage estimate rises to P11.1BJocson, Luisa Maria Jacinta C. (BusinessWorld Publishing Corporation, 2022-01-06)Damage was reported in the Calabarzon (Cavite, Laguna, Batangas, Rizal, Quezon), Mimaropa (Mindoro, Marinduque, Romblon, Palawan), Bicol, Western Visayas, Central Visayas, Eastern Visayas, Zamboanga Peninsula, Northern Mindanao, Davao, Soccsksargen (South Cotabato, Cotabato, Sultan Kudarat, Sarangani, General Santos City) and the Caraga region. The Bureau of Fisheries and Aquatic Resources said it will provide six 20-foot fiberglass boats and two freezers to fisherfolk beneficiaries and associations affected by the storm in Southern Leyte.
- Quinta' aftermath: Deaths, fishkillLocus, Sundy Mae T.; Romero, Maria; Wakefield, Francis T. (Concept & Information Group, Inc., 2020-10-29)Bureau of Fisheries and Aquatic Resources (BFAR) Region 5, meanwhile, reported an initial 20 metric tons of tilapia valued at P2.1 million were lost. BFAR-5’s Regional Fisheries Laboratory conducted water sampling in six villages — Iraya, Ibayugan, Tambo, Cabatuan, Salvacion and Sta. Elena. Results showed low dissolved oxygen (DO), ranging from 0.18 to 4.37PPM, and very high ammonia (ranging from 7.58 to 10,679 mg/L) content in Lake Buhi. Normal and tolerable ranges of DO are below 5PPM and ammonia at only 0.050 mg/L or lower.
- Aquino grants fishing boats to fishermenGalvez, James Konstantin (The Manila Times Publishing Corporation, 2014-02-26)President Benigno Aquino 3rd led the awarding of newly built fishing boats to fisherfolk in coastal communities affected by the onslaught of Super Typhoon Yolanda. During the 28th anniversary of EDSA People Power in Visayas, the President awarded new and repaired units of fishing boats and other forms of assistance to typhoon-hit fisherfolk in the said coastal community. Accompanied by Agriculture Secretary Proceso Alcala, former senator and now Typhoon Yolanda rehab czar Panfilo Lacson and Executive Secretary Paquito Ochoa, President Aquino visited the municipality of Bantayan in Bantayan Island, Northern Cebu to check on the progress of the rehabilitation efforts in the area.