Philippine Journal of Science

: I am Rose Ann Diamante, a fisheries graduate from the University of the Philippines Visayas in Miagao, Iloilo, where I earned my bachelor’s degree in 2014 and my master’s degree in 2024. I am currently working as a research assistant at SEAFDEC/AQD, where my work primarily involves field research and active engagement with local communities.

During my graduate studies, I focused my research on the conch gastropod, particularly its gleaning fishery. My interest in this topic began during a fieldwork in Guimaras, where our site was near a gleaning area. I observed that most gleaners were shaking cans and pails filled with their catch, which turned out to be conch shells locally known as sikad-sikad. This traditional practice of shaking containers forces the conchs to expel ingested sand. Through casual conversations, I learned that these shells comprised the majority of their harvest almost every gleaning. This observation raised questions in my mind about the status of its fishery, its sustainability, and the future of this resource—leading me to pursue the study.

This study involved the participation of gleaners from the selected sites. Coordinating schedules proved challenging, but effective time management and proper coordination made it possible. Emotional resilience was also essential, as most respondents came from the poor sector and the elderly. Listening to their stories of hardship, yet witnessing their resilience, was both inspiring and deeply moving.

Research plays a vital role in shaping policies that are both beneficial to society and sustainable for the environment. Gleaning fisheries, being a data-limited sector, require a comprehensive investigation of both biological and social dimensions. Such research is essential to raise awareness of the species collected and to highlight the ecological consequences of unmanaged gleaning practices. Publishing this study in the Philippine Journal of Science is deeply rewarding, as it is one of the country’s most reputable scientific journals that provides free access to its readers. Knowing that my work can reach a wider audience and contribute to evidence-based policymaking affirms the value of this endeavor.

For the young aspirants, the field of science and technology encompasses a wide range of disciplines that demand lifelong curiosity and continuous learning. Pursuing this career requires unwavering focus, dedication, and above all, patience and persistence. Challenges are inevitable, but in moments of difficulty, it is important to remember your purpose and keep moving forward. Surrounding yourself with the right mentors and supportive peers will make the journey more manageable and enriching. Above all, never hesitate to ask questions—for it is through curiosity that we uncover the unknown and advance our understanding of the world.

PJS article: This study discusses how accelerated soil erosion from nickel laterite (LA) mining in Carrascal threatens lowland rice production. A greenhouse study showed that rice yields sharply declined—or even reached zero—at high LA levels due to severe macro- and micronutrient deficiencies. Field validation and soil amelioration studies are recommended.

Full article: https://tinyurl.com/58fswed8

PJS article: Gall rust significantly threatens Falcataria falcata plantations in the Philippines, affecting tree health and productivity. This study assessed understory vegetation—species composition, richness, and biomass—and found that medium and high vegetation layers with higher biomass and diverse species suffered more severe gall rust. Dominant species included Imperata cylindrica, Saccharum spontaneum, Piper aduncum, and Melastoma malabathricum. Managing vegetation composition and biomass can reduce disease impact.

Full article: https://tinyurl.com/5n83em7c

PJS article: This study assessed epifaunal macroinvertebrates in seagrass beds at Buntong Gasang and Magnanay, Batangas, Philippines, examining vegetation and environmental factors across April and August 2023. Six seagrass genera supported 20 macroinvertebrate species, with distinct assemblages between sites. Structural complexity and sediment organic matter influence species distribution. Key commercially important species were recorded, highlighting the need for ongoing monitoring and future studies on food sources and recruitment patterns.

Full article: https://tinyurl.com/pab2t29s

PJS article: This study assessed mesoplastic pollution (5–25 mm) on three sandy beaches in Cagayan de Oro City, Philippines. A total of 82 mesoplastics were collected, with Bulua Seaside showing the highest concentration. Most mesoplastics were film-shaped (39.5%), white (47.4%), 16–20 mm (31.6%), and made of polypropylene (34.2%). Results highlight significant site differences and provide baseline data for coastal pollution management.

Full article: https://tinyurl.com/4d3znay3

PJS article: This study reports the first verified Philippine micrometeorite, PHMM 001, collected in Mariveles, Bataan. Using nondestructive techniques—optical and electron microscopy with X-ray spectroscopy—the specimen was confirmed as a melted silicate barred olivine cosmic spherule. The discovery promotes space science awareness and encourages collaborative research in Philippine meteoritics.

Full article: https://tinyurl.com/2dhk35xw

PJS Article: Gleaning is a crucial subsistence fishery in coastal Nueva Valencia, Guimaras, the Philippines, where women primarily collect conch during low tide. Serving as a secondary income source and food, conch contributes PHP 500–1,000 monthly. Six species were identified, with 1,728–5,184 kg potentially harvested annually. Declining abundance and sustainability risks highlight the need for management and policy measures.

Full article: https://tinyurl.com/4dpeufrb

Check this out! The latest issue of the Philippine Journal of Science highlights the discovery of a micrometeorite collected from a residential rooftop in Mariveles, Bataan. Designated PHMM 001, it shows likely extraterrestrial origin. This pioneering study in the Philippines advances space science awareness and invites both professional and citizen scientists to explore meteoritics. Read more on pages 1543–1554.

If you want to access all the 20 articles, click this link: https://philjournalsci.dost.gov.ph/

Honoring Dr. Queena Lee-Chua, we revisit her study Going for Gold in the International Math Olympiad (Philippine Journal of Science).

In July 2016, two Philippine high school students won gold at the 57th IMO in Hong Kong, completing a three-decade quest for top honors. The other team members also earned distinctions, placing the Philippines 17th of 109 countries. Key success factors include rigorous training, early problem-solving exposure, mental toughness, and, for Filipino-Chinese participants, Confucian learning traditions and extended math practice.

See the full article through this link: https://tinyurl.com/y338w6f8

Check this out: This study analyzed fiber morphology and derived ratios of Thailand and yellow bamboo grown in Laguna and Baguio. Species, location, height, and portions significantly affected fiber traits. Yellow bamboo had longer fibers, whereas Thai bamboo had thicker walls. Baguio samples showed notable variations. Both species were Class III and suitable for pulp, paper, and composite material applications.

Full article: https://tinyurl.com/3jd7mv8x

Check this out: Coral-killing sponges (CKS) threaten Indo-Pacific reefs, including Indonesia’s Karimunjawa. A 2022 survey found five CKS types, with three assessed across nine sites. Their prevalence remained below 10% on average, and abundance was low, yet findings offer crucial baseline data on CKS distribution and impacts on local coral ecosystems.

Full article: https://tinyurl.com/zprejf65

Check this out: This study used line transect sampling and knowledge, attitude, and perception (KAP) surveys to assess long-tailed macaques (LTMs) in 𝘉𝘢𝘳𝘢𝘯𝘨𝘢𝘺 Sumile, Butuan City, the Philippines. An estimated 120 individuals across five troops showed a self-sustaining population. Surveys of 332 residents revealed high KAP levels toward LTMs—linked to s*x, occupation, and education. The study highlights a socioecological approach for continued monitoring of LTM populations in nearby areas.

Full article: https://tinyurl.com/nhcwk63m