Publications
What Ifugao farmers, locals and the youth want: beyond tokenism in UNESCO heritage tourism and activities
Heritage tourism at the UNESCO-listed Rice Terraces of the Philippine Cordilleras, while fostering cultural pride and economic opportunities, often fails to deliver meaningful participation or equitable benefits for local communities. A study involving 250 individuals across four Ifugao municipalities revealed that while transparency in governance was highly valued, issues of fairness, accountability, and inclusivity persisted. Benefits disproportionately favored those directly tied to tourism, leaving farmers, community members, and youth with modest satisfaction. The research advocates for a non-traditional approach to tourism governance, emphasizing open planning and decision-making processes to ensure sustainability, shared benefits, and the preservation of community values without compromising authenticity for visitors.
Conservation for Whom? Archaeology, Heritage Policy, and Livelihoods in the Ifugao Rice Terraces
Heritage conservation must prioritize adaptability and community-driven stewardship over rigid authenticity to sustain dynamic socio-ecological systems. A study of the Ifugao Rice Terraces reveals that their long-term viability depends on integrating livelihoods, functional flexibility, and local governance. Archaeological, ethnographic, spatial, and agricultural economic data show that wet-rice agriculture's expansion in the 17th century replaced earlier systems but maintained adaptive strategies, such as incorporating swidden fields and ritual practices. Contemporary shifts—like labor migration and climate variability—reflect ongoing adaptation rather than decline. Comparative analysis with other heritage sites underscores the need for conservation models that support economic viability and local authority to ensure cultural continuity in response to future challenges.
Multiple Values and System Mechanisms of Rice Terrace Systems from the Perspective of Heritage Comparison
Rice terrace systems, such as the Honghe Hani Rice Terraces in China and the Ifugao Rice Terraces in the Philippines, exhibit complex interconnections between multiple heritage values, including cultural landscape, agricultural production, irrigation engineering, and intangible cultural heritage. This study reveals that these systems consist of five interconnected subsystems—nature, terrace, village, irrigation, and concept—which collectively form a highly self-consistent and diverse yet unified whole. By analyzing typical cases through comparative research, the study demonstrates how rice terrace systems meet the criteria for multiple heritage classifications while maintaining their overall value integrity. The findings highlight the potential of systematic thinking in heritage protection and conservation, emphasizing the need for future research to address challenges in heritage activation, utilization, and value continuation.
Standardizing antisickling phenylalanine peptide derivatives from philippine cordillera rice terrace paddy bund weed extracts in ifugao heritage zones
Researchers have identified and standardized phenylalanine peptide derivatives from paddy bund weeds in the UNESCO-listed Rice Terraces of the Philippine Cordilleras as potent antisickling agents. These compounds, derived from mixed weed biomass collected along Ifugao heritage zones, demonstrated significant sickling inhibition (72.4% at 200 µg/mL) with an IC50 of 52.3 µg/mL. High-performance liquid chromatography (HPLC) and mass spectrometry (LC-MS/MS) revealed two specific phenylalanine-conjugated dipeptides alongside flavonoid glycosides, establishing a quality specification for consistent batch production. This study validates traditional Ifugao practices while providing a novel pharmacological foundation for managing hyperviscosity syndromes, including sickle cell disease.
Updated Microfossil and 14C Analyses of Ifugao Rice Terraces, Philippine Cordilleras, Reveal Early Taro and Rice Cultivation, and New Parasite Discoveries1
New analyses of microfossils and radiocarbon dating from the Ifugao Rice Terraces in the Philippine Cordilleras reveal that taro (Colocasia esculenta) and rice (Oryza sativa) cultivation began at least 810–750 years ago, predating previous estimates by a century. These findings challenge the notion of post-Hispanic expansion for rice cultivation while supporting its spread during this period. Additionally, the study identifies helminth eggs, including Toxocara canis, marking the first early Philippine record of this parasite. The research combines microfossil analysis with 14C dating and helminthology to reconstruct agricultural and parasitic histories in the region.
Local Cuisine Attraction in the Rice Terraces of the Cordilleras: A World Heritage Site of the Philippines
Tourists visiting the UNESCO World Heritage Site of the Rice Terraces of the Philippine Cordilleras show significant willingness to consume local cuisine, particularly when they are younger and exhibit food-related personality traits such as food neophilia (willingness to try new foods) rather than food neophobia (aversion to novelty). Despite limited awareness about local dishes, these factors play a crucial role in shaping tourists' food preferences. The study, which surveyed 300 visitors through quantitative methods including questionnaires and interviews, highlights the importance of understanding demographic and psychological influences on culinary tourism experiences at World Heritage Sites.
Reinforcing Philippine Cultural Landscape Values through the Schools of Living Tradition (SLTs)
The Schools of Living Tradition (SLTs) program effectively preserves and reinvents cultural landscape values amid rapid modernization, demonstrating that traditional practices can adapt to contemporary changes. Initially established to safeguard intangible heritage like the Ifugao Hudhud chanting tradition, SLTs have successfully integrated environmental imagery into crafts and textiles, preserving associative landscapes through language, color, and motifs. However, shifts in food production and education are transforming this mimicry of the landscape into a nostalgic memory, highlighting both the resilience and vulnerability of cultural heritage in dynamic environments.
Organic Matter Clogging Results in Undeveloped Hardpan and Soil Mineral Leakage in the Rice Terraces in the Philippine Cordilleras
A critical threat to the UNESCO-listed Rice Terraces of the Philippine Cordilleras—flooded paddies at risk of collapse due to excessive water infiltration—has been linked to organic matter clogging rather than the intended hardpan formation. Research reveals that high organic matter content, which suppresses water drainage, leads to reductive soil conditions and mineral leaching (phosphorus, potassium, calcium, manganese). Field surveys and soil analysis demonstrated that undeveloped hardpans, combined with organic buildup, hinder terrace stability while depleting essential nutrients. Unlike hardpan formation, organic clogging is invisible from the surface, complicating management. The study advocates for pre-planting hard layer checks and post-crop drainage during the rainy season to mitigate risks while sustaining traditional farming practices.
The Short History of the Ifugao Rice Terraces: A Local Response to the Spanish Conquest
Contrary to long-held beliefs, the Ifugao Rice Terraces in the Philippine Cordilleras were not established 2000–3000 years ago but rather emerged as a recent adaptation to Spanish colonization. This study challenges the dominant historical narrative by integrating radiocarbon dating, faunal isotopic signatures, human osteological remains, archaeobotanical data, energetics assessments, and spatial analysis. Findings suggest that the shift to wet-rice cultivation was a response to colonial pressures rather than an ancient practice. The research employs Bayesian modeling alongside ethnohistorical and ethnographic evidence to reconstruct the terraces' origins, offering new insights into their cultural and historical significance.
Plant Microfossil Results from Old Kiyyangan Village: Looking for the Introduction and Expansion of Wet-field Rice (Oryza sativa) Cultivation in the Ifugao Rice Terraces, Philippine Cordilleras
A groundbreaking analysis of plant microfossils from Old Kiyyangan Village, Ifugao Province, reveals preliminary evidence for the introduction and expansion of wet-field rice (Oryza sativa) cultivation in the Philippine Cordilleras. Pollen, phytolith, and starch analyses of 12 sediment samples date human activity to approximately 810–750 cal. b.p., with the first rice remains appearing around 675 cal. b.p. A significant increase in these remains after 530–470 cal. b.p. suggests a late expansion of rice cultivation, corroborating previous studies. This study provides the initial sediment-derived ancient starch and phytolith evidence for Oryza sativa in the Philippines, offering new insights into the agricultural history of this UNESCO World Heritage Site.
Woody habitats promote pollinators and complexity of plant–pollinator interactions in homegardens located in rice terraces of the Philippine Cordilleras
Woody habitats significantly enhance bee diversity and abundance, as well as the complexity of plant-pollinator interactions in homegardens within the UNESCO-listed Rice Terraces of the Philippine Cordilleras. The study found that wild bee richness was higher in gardens surrounded by woody areas compared to those farther from woodlands, while bee abundance increased with greater flower cover. Wild bees were also more active on cultivated plants than domesticated bees (Apis cerana), contributing to 76% of total flower visits. Pollinator-plant networks were more intricate in gardens near woody habitats, highlighting the ecological importance of preserving and restoring such landscapes for sustainable pollination services in smallholder agricultural systems.
Local Visions of the Landscape: Participatory Photographic Survey of the World Heritage Site, the Rice Terraces of the Philippine Cordilleras
Local residents of the UNESCO World Heritage Site, the Rice Terraces of the Philippine Cordilleras, exhibit deep awareness of their ancestral landscape and its role in livelihoods and food supply. This insight emerged from a participatory photographic survey involving community members, revealing their intimate connection to the terraces beyond stereotypical depictions often promoted by tourism and media. The study highlights how local perceptions contrast with outsider narratives, offering a nuanced understanding of cultural heritage that integrates traditional knowledge with modern conservation efforts.
Living cultural landscape: Rice Terraces of the Philippine Cordilleras
The Rice Terraces of the Philippine Cordilleras exemplify a unique cultural landscape shaped by the Ifugao people's traditional agricultural practices over two millennia. These terraces, aesthetically striking and ecologically integrated, reflect a communal system of rice production that harmonizes with the surrounding forest and irrigation systems. The study highlights the role of local communities in preserving this site's outstanding universal value while addressing challenges posed by social and economic changes. By analyzing the interplay between human adaptation and environmental management, the research underscores the resilience and continuity of these terraces as a testament to sustainable cultural practices.
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