How Much and Why? Conservation Behavior and Valuation in Katunggan Coastal Ecopark, Mindanao Island, Philippines

Authors

DOI:

https://doi.org/10.24259/fs.v9i2.43851

Keywords:

Community-based conservation, Environmental valuation, Mangrove conservation, Structural Equation Modelling (SEM), Mindanao, Philippines

Abstract

Mangrove forests are among the most productive and valuable ecosystems, providing critical services such as shoreline protection, fisheries support, and carbon sequestration. Despite their ecological and economic significance, mangrove forests continue to decline at an alarming rate due to land conversion for aquaculture, urban expansion, overharvesting, and climate-related impacts. Although national and community-based conservation programs exist in the Philippines, many of these efforts have struggled due to limited public participation and a lack of insight into how local communities perceive and value mangrove ecosystems. This study surveyed 503 residents living near the Katunggan Coastal Ecopark in Mindanao Island, Philippines, to examine how conservation attitudes, perceived threats, knowledge, utilization, and sociodemographic factors shape conservation action and willingness-to-pay (WTP) for mangrove protection. Respondents generally exhibited high knowledge of mangroves, with strong recognition of climate and human-induced threats, as well as high conservation attitudes and actions, and a low reliance on mangroves for their livelihood. Most expressed support for conservation through monetary contributions (82.4%), although some cited financial constraints, skepticism toward fund use, or preference for non-monetary participation. Structural equation modeling (SEM) revealed that perceived threat and conservation attitude significantly influenced conservation actions, while knowledge, conservation actions, monthly income, and sex at birth predicted WTP. The log-normal interval regression model estimated a mean annual WTP of USD 12.29 (₱703.53) and a median of USD 1.59 (₱91.01), indicating a right-skewed distribution. These findings offer critical insight into the cognitive and behavioral drivers of mangrove conservation support. They can inform inclusive, flexible payment mechanisms that ensure greater community participation in sustainable mangrove ecosystem management.

References

Acharya, R. P., Maraseni, T. N., & Cockfield, G. (2021). Estimating the willingness to pay for regulating and cultural ecosystem services from forested Siwalik landscapes: Perspectives of disaggregated users. Annals of Forest Science, 78(2), 51. https://doi.org/10.1007/s13595-021-01046-3

Ajzen, I. (1991). The theory of planned behavior. Organizational Behavior and Human Decision Processes, 50, 179–211. https://doi.org/10.1016/0749-5978(91)90 020-T

Al Furqon, M. R., & Hak, M. B. (2025). Visitors’ Willingness to Pay for Mangrove Conservation: Case Bale Mangrove Ecotourism. Jurnal Ekuilnomi, 7(1), 25–33. https://doi.org/10.36985/dc70b058

Allegretti, A. M. (2010). Acceptability, conflict, and support for coastal resource management policies and initiatives in Cebu, Philippines. [Master's Thesis]. Colorado State University.

Alimbon, J. A. & Manseguiao, M. R. S. (2021). Community Knowledge and Utilization of Mangroves in Panabo Mangrove Park, Panabo City, Davao del Norte, Philippines. International Journal of Bonorowo Wetlands, 11(2), 51-57. https://doi.org/10.13 057/bonorowo/w110201

Ampaso, A. M., Buncag, M. J. J., Magarin, R. P., & Arreza, K. P. (2024). Contingent Valuation on Residents’ Willingness to Pay for Mangrove Rehabilitation in Baroy, Lanao Del Norte, Philippines. Journal of Environmental & Earth Sciences, 6(2), 52–63. https://doi.org/10.30564/jees.v6i2.6405

Badola, R., Barthwal, S., & Hussain, S. A. (2012). Attitudes of local communities towards conservation of mangrove forests: A case study from the east coast of India. Estuarine, Coastal and Shelf Science, 96, 188–196. https://doi.org/10.1016/j.ecs s.2011.11.016

Bennett, N. J. (2016). Using perceptions as evidence to improve conservation and environmental management. Conservation Biology, 30(3), 582–592. https://doi. org/10.1111/cobi.12681

Bennett, N. J., Di Franco, A., Calò, A., Nethery, E., Niccolini, F., Milazzo, M., & Guidetti, P. (2019). Local support for conservation is associated with perceptions of good governance, social impacts, and ecological effectiveness. Conservation Letters, 12(4), e12640. https://doi.org/10.1111/conl.12640

Broberg, T., & Brännlund, R. (2008). On the value of large predators in Sweden: A regional stratified contingent valuation analysis. Journal of Environmental Management, 88(4), 1066–1077. https://doi.org/10.1016/j.jenvman.2007.0 5.016

Camacho, L. D., Gevaña, D. T., Sabino, L. L., Ruzol, C. D., Garcia, J. E., Camacho, A. C. D., ... & Takeuchi, K. (2020). Sustainable mangrove rehabilitation: Lessons and insights from community-based management in the Philippines and Myanmar. APN Science Bulletin, 10(1), 18–25. https://doi.org/10.30852/sb.202 0.983

Cañada, M. C. B., Velasco, C. R., & Lota, M. M. (2022). Gender Roles in the Utilization and Challenges in the Management of Mangrove Forests in Casiguran, Aurora, Philippines. Open Journal of Ecology, 12(04), 257–270. https://doi.org/10.4236/ oje.2022.124015

Carandang, A. P., Camacho, L. D., Gevaña, D. T., Dizon, J. T., Camacho, S. C., de Luna, C. C., ... & Rebugio, L. L. (2013). Economic valuation for sustainable mangrove ecosystems management in Bohol and Palawan, Philippines. Forest science and technology, 9(3), 118-125. https://doi.org/10.1080/21580103.2013.801149

Carson, R. T., & Hanemann, W. M. (2005). Chapter 17 Contingent Valuation. In Mäler, K. G., & Vincent, J. R. (Eds.). Handbook of environmental economics (Vol. 2: Valuing environmental changes. (pp. 821–936). Elsevier. https://doi.org/10.1016/S1574-0099(05)02017-6

Carugati, L., Gatto, B., Rastelli, E., Lo Martire, M., Coral, C., Greco, S., & Danovaro, R. (2018). Impact of mangrove forests degradation on biodiversity and ecosystem functioning. Scientific Reports, 8(1), 13298. https://doi.org/10.1038/s41598-018-31683-0

Clough, B. F. (2013). Continuing the journey amongst mangroves. The International Society for Mangrove Ecosystems (ISME) and International Tropical Timber Organization (ITTO).

Creencia, G. B. A., & Querijero, B. V. (2018). Gender-Based Difference in the Knowledge, Awareness, Economic Valuation, and Conservation Roles in Calatagan Mangroves Forest Conservation Park (CMFCP) in Batangas, Philippines. SDSSU Multidisciplinary Research Journal (SRMJ), 6, 18-23.

Cummings, R. G., & Taylor, L. O. (1999). Unbiased Value Estimates for Environmental Goods: A Cheap Talk Design for the Contingent Valuation Method. American Economic Review, 89(3), 649–665. https://doi.org/10.1257/aer.89.3.649

Dat, L. Q., Chou, S.-Y., Tam, P. M., Hue, N. T., & Thuy, P. T. (2024). Factors Influencing Residents’ Willingness to Pay for Mangrove Forest Environmental Services in Phu Long, Vietnam. Sage Open, 14(3), 21582440241264604. https://doi.org/10.1177/21582440241264604

De Lange, E., Sze, J. S., Allan, J., Atkinson, S., Booth, H., Fletcher, R., Khanyari, M., & Saif, O. (2023). A global conservation basic income to safeguard biodiversity. Nature Sustainability, 6(8), 1016–1023. https://doi.org/10.1038/s41893-023-01115-7

De Leon, E. G. (n.d.). Barriers in scaled climate change adaptation policy in the Philippines. Peace and Progress-The United Nations University Graduate Student Journal, 3(1), 32-44. https://postgraduate.ias.unu.edu/upp/wp-content/upload s/2016/07/4_De-Leon_article.pdf

Department of Environment and Natural Resources Executive Order No. 26 (2011). Declaring an Interdepartmental Convergence Initiative for a National Greening Program. Accessed from https://www.officialgazette.gov.ph/2011/02/24/execu tive-order-no-26-s-2011/ on April 1, 2025.

Department of Environment and Natural Resources- Forest Management Bureau- (DENR-FMB) (2023). Philippine Forestry Statistics: 2023. Retrieved from https://drive.google.com/file/d/1uYMd6FJosiT-12ltzZM8veYujjK_u3t3/preview on April 1, 2025.

De Vera, P. J. D., Alombro, N. C., Patadon, S. M., & Catipay, J. P. A. (2023). Factors Affecting the Intention to Implement Pro-environmental Behaviors: A Case of Riverside Communities in Cotabato City Rivers, Mindanao Island, Philippines. Journal of Marine and Island Cultures, 12(3). https://doi.org/10.21463/jmic.202 3.12.3.10

De Vera, P. J. D., Catipay, J. P. A., Kontsiotis, V. J., & Liordos, V. (2024). Snake Conservation Attitudes in The Philippines, A Global Biodiversity Hotspot. Human Ecology, 52(4), 771–784. https://doi.org/10.1007/s10745-024-00523-3

Domingo, S. N., Manejar, A. J. A., & Ocbina, J. J. S. (2022). Looking at Payments for Ecosystem Services in the Philippines. PIDS Discussion Paper Series, No. 2022-49. Philippine Institute for Development Studies (PIDS).

Drupp, M. A., Turk, Z. M., Groom, B., & Heckenhahn, J. (2024). Global evidence on the income elasticity of willingness to pay, relative price changes and public natural capital values. arXiv, 2308-04400. https://doi.org/10.48550/arXiv.2308.04400

Firdaus, F. (2023). Green product purchase decision: the role of environmental consciousness and willingness to pay. Jurnal Aplikasi Manajemen, 21(4), 1045-1060. https://doi.org/10.21776/ub.jam.2023.021.04.14

Faccioli, M., Czajkowski, M., Glenk, K., & Martin-Ortega, J. (2020). Environmental attitudes and place identity as determinants of preferences for ecosystem services. Ecological Economics, 174, 106600. https://doi.org/10.1016/j.ecoleco n.2020.106600

Farley, J. (2010). Conservation Through the Economics Lens. Environmental Management, 45(1), 26–38. https://doi.org/10.1007/s00267-008-9232-1

Firdaus, M., Hatanaka, K., & Saville, R. (2021). Mangrove Forest Restoration by Fisheries Communities in Lampung Bay: A study based on perceptions, willingness to pay, and management strategy. Forest and Society, 5(2), 224–244. https://doi.org/10. 24259/fs.v5i2.12008

Fornell, C., & Larcker, D. F. (1981). Evaluating structural equation models with unobservable variables and measurement error. Journal of Marketing Research, 18(1), 39–50. https://doi.org/10.2307/3151312

Gagarin, W., Eslava, D. F., Ancog, R., Tiburan Jr, C. L., & Ramos, N. (2022). Willingness to Pay for Mangroves’ Coastal Protection: A Case Study in Santo Angel, Calauag, Quezon, Philippines. Forest and Society, 6(1), 436–449. https://doi.org/10.24259 /fs.v6i1.18129

Gefen, D., Straub, D., & Boudreau, M. C. (2000). Structural equation modeling and regression: Guidelines for research practice. Communications of the Association for Information Systems, 4(1), 7. https://doi.org/10.17705/1CAIS.00407

Gkargkavouzi, A., & Halkos, G. (2024). Environmentalism in the light of Behavioral Economics. MPRA Paper No. 120752. MPRA. Retrieved from https://mpra.ub.uni-muenchen.de/120752/

Gorris, P., & Koch, L. (2024). Building trust in environmental co-management: Social embeddedness in a contested German biodiversity conservation governance process. Environmental Science & Policy, 154, 103695. https://doi.org/10.1016 /j.envsci.2024.103695

Hair, J., Black, W., Babin, B., & Anderson, R. (2013). Multivariate Data Analysis: Pearson New International Edition (7th Edition). Pearson Education.

Hanemann, M., Loomis, J., & Kanninen, B. (1991). Statistical Efficiency of Double‐Bounded Dichotomous Choice Contingent Valuation. American Journal of Agricultural Economics, 73(4), 1255–1263. https://doi.org/10.2307/1242453

Harvard Humanitarian Initiative. (n.d.). KoboToolbox. Available online: https://www.kobotoolbox.org/

Hernando, A. M. V., Tirasol, M. A. B., & Rosete, M. A. L. (2024). Contingent Valuation Study: Understanding Filipinos’ Support for Mangrove Forest Restoration and Conservation in Ipil, Zamboanga Sibugay, Philippines. Journal of Environment, 4(5). https://doi.org/10.47941/je.2433

Hoffmann, R., & Muttarak, R. (2020). Greening through schooling: Understanding the link between education and pro-environmental behavior in the Philippines. Environmental Research Letters, 15(1), 014009. https://doi.org/10.1088/1748-9326/ab5ea0

Hooper, D., Coughlan, J., & Mullen, M. R. (2008). Structural equation modelling: Guidelines for determining model fit. The Electronic Journal of Business Research Methods, 6(1), 53–60.

Hu, L. T., & Bentler, P. M. (1999). Cutoff criteria for fit indexes in covariance structure analysis: Conventional criteria versus new alternatives. Structural Equation Modeling: A Multidisciplinary Journal, 6(1), 1–55. https://doi.org/10.1080/10705 519909540118

Jaafar, K. J. D., Vera, P. J. D. D., Catipay, J. P. A., Kontsiotis, V. J., & Liordos, V. (2024). Endemic and Threatened: The Conservation Value of the Philippine Duck. Diversity, 16(10), 602. https://doi.org/10.3390/d16100602

Jorgensen, T. D., Pornprasertmanit, S., Schoemann, A. M., & Rosseel, Y. (2025). semTools: Useful tools for structural equation modeling. R package version 0.5-7. Available online: https://CRAN.R-project.org/package=semTools

Kassahun, H. T., Jacobsen, J. B., & Nicholson, C. F. (2020). Revisiting money and labor for valuing environmental goods and services in developing countries. Ecological Economics, 177, 106771. https://doi.org/10.1016/j.ecolecon.2020.106771

Kollmuss, A., & Agyeman, J. (2002). Mind the Gap: Why do people act environmentally and what are the barriers to pro-environmental behavior? Environmental Education Research, 8(3), 239–260. https://doi.org/10.1080/1350462022014 5401

Lamsal, P., Atreya, K., Pant, K. P., & Kumar, L. (2015). An analysis of willingness to pay for community-based conservation activities at the Ghodaghodi Lake Complex, Nepal. International Journal of Biodiversity Science, Ecosystem Services & Management, 11(4), 341–348. https://doi.org/10.1080/21513732.2015.105 5338

Limbaro, G. R. A., Villareal, J. F., Poclis-Villareal, C. E., Santillan, R. D. S., & Jan D. De Vera, P. (2024). Understanding attitudes to urban tree conservation in Mindanao Island, Philippines. Arboricultural Journal, 1–21. https://doi.org/10.1080/0307 1375.2024.2426418

Long, J. B., & Giri, C. (2011). Mapping the Philippines’ Mangrove Forests Using Landsat Imagery. Sensors, 11(3), 2972–2981. https://doi.org/10.3390/s110302972

Long, J., Napton, D., Giri, C., & Graesser, J. (2014). A Mapping and Monitoring Assessment of the Philippines’ Mangrove Forests from 1990 to 2010. Journal of Coastal Research, 294, 260–271. https://doi.org/10.2112/JCOASTRES-D-13-00 057.1

López-Portillo, J., Lewis III, R. R., Saenger, P., Rovai, A., Koedam, N., Dahdouh-Guebas, F., ... & Rivera-Monroy, V. H. (2017). Mangrove forest restoration and rehabilitation. In Rivera-Monroy, V. H., Lee, S. Y., Kristensen, E., & Twilley, R. R. (Eds.), Mangrove Ecosystems: A Global Biogeographic Perspective (pp. 301–345). Springer International Publishing. https://doi.org/10.1007/978-3-319-62206-4_10

Makwinja, R., Kosamu, I. B. M., & Kaonga, C. C. (2019). Determinants and Values of Willingness to Pay for Water Quality Improvement: Insights from Chia Lagoon, Malawi. Sustainability, 11(17), 4690. https://doi.org/10.3390/su11174690

Maliao, R. J., & Polohan, B. B. (2008). Evaluating the Impacts of Mangrove Rehabilitation in Cogtong Bay, Philippines. Environmental Management, 41(3), 414–424. https://doi.org/10.1007/s00267-007-9021-2

Mangaoang, C. C. & Flores, A. B. (2019). Inventory of mangroves in Katunggan Coastal Eco-Park, Sultan Kudarat Province, the Philippines. Bonorowo Wetlands, 9(2). https://doi.org/10.13057/bonorowo/w90202

Millennium Ecosystem Assessment. (2005). Ecosystems and Human Well-Being: Synthesis. Island Press.

Musa, F., Mohd Fozi, N., & Mohd Hamdan, D. D. (2020). Coastal Communities’ Willingness to Pay for Mangrove Ecotourism at Marudu Bay, Sabah, Malaysia. Journal of Sustainability Science and Management, 15(4), 130–140. https://doi.org/10.46754/jssm.2020.06.013

Neri, M. P., Baloloy, A. B., & Blanco, A. C. (2021). Limitation Assessment And Workflow Refinement of the Mangrove Vegetation Index (Mvi)-Based Mapping Methodology Using Sentinel-2 Imagery. The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, XLVI-4/W6-2021, 235–242. https://doi.org/10.5194/isprs-archives-XLVI-4-W6-2021-235-2021

Nguyen, T. V., Simioni, M., & Vo, H. T. (2022). Valuing Mangrove Conservation Attributes in Red River Delta, Vietnam: A Choice Experiment Approach. Marine Resource Economics, 37(3), 349–368. https://doi.org/10.1086/720468

Nyangon, L., Zainal, A. N. S., Pazi, A. M. M., & Gandaseca, S. (2019). Heavy metals in mangrove sediments along the Selangor River, Malaysia. Forest and Society, 3(2), 278. https://doi.org/10.24259/fs.v3i2.6345

Nyein, L. T., Karthe, D., Giessen, L., Babel, M. S., & Schusser, C. (2025). Reviewing Mangrove Degradation, Conservation, and Restoration: A Sustainability Nexus Assessment on Myanmar Using the DPSIR Framework. Forest and Society, 9(1), 164–185. https://doi.org/10.24259/fs.v9i1.35303

Ottinger, M., Clauss, K., & Kuenzer, C. (2016). Aquaculture: Relevance, distribution, impacts and spatial assessments – A review. Ocean & Coastal Management, 119, 244–266. https://doi.org/10.1016/j.ocecoaman.2015.10.015

Pacyao, J. P. (2025). Community-Based Mangrove Nursery as Production Support System for Mangrove Rehabilitation Efforts in Davao Occidental, Philippines. SSRN. https://doi.org/10.2139/ssrn.5020631

Palanca-Tan, R. (2020). Willingness to Pay of Urban Households for the Conservation of Natural Resources and Cultural Heritage in a Neighboring Rural Area: A CVM Study. Philippine Journal of Science, 149(2). https://doi.org/10.56899/149.02.14

Philippine Statistics Authority (PSA). (2020). Highlights of the results of the 2020 census of population and housing. Retrieved from https://rsso12.psa.gov.ph/sys tem/files/attachment-dir/65R12-SR2021-19_Highlights%2520of%2520the%2 520Results%2520of%2520the%25202020%2520Census%2520of%2520Population%2520and%2520Housing%2520%25282020%2520CPH%2529.pdf on April 1, 2025.

Philippine Statistics Authority (PSA) (2023). Fisherfolks and Farmers Remain to Have the Highest Poverty Incidences Among the Basic Sectors in 2021. Accessed from https://psa.gov.ph/content/fisherfolks-and-farmers-remain-have-highest-poverty-incidences-among-basic-sectors-2021

Polidoro, B. A., Carpenter, K. E., Collins, L., Duke, N. C., Ellison, A. M., Ellison, J. C., ... & Yong, J. W. H. (2010). The loss of species: mangrove extinction risk and geographic areas of global concern. PloS one, 5(4), e10095. https://doi.org/10.1371/journal. pone.0010095

Primavera, J. H. (1995). Mangroves and brackishwater pond culture in the Philippines. Hydrobiologia, 295(1-3), 303–309. https://doi.org/10.1007/bf00029137

Primavera, J. H., Rollon, R. N., & Samson, M. S. (2011). The Pressing Challenges of Mangrove Rehabilitation. In Wolanski. E., & McLusky, D. (Eds.), Treatise on Estuarine and Coastal Science (pp. 217–244). Elsevier. https://doi.org/10.1016/ B978-0-12-374711-2.01010-X

Pulhin, J. M., Sajise, A. J. U., Predo, C. D., Anders, C. S., Tatlonghari, R. V., Mendoza, M. D., ... & Sevilla, F. Y. (2024). Catalysts and barriers in the development and implementation of payment for water ecosystem services in the Philippines: Retrospects and prospects. Science and Engineering Journal, Special Issue, 281-303. https://doi.org/10.54645/202417SupTBM-28

Quevedo, J. M. D., Uchiyama, Y., & Kohsaka, R. (2020). Perceptions of local communities on mangrove forests, their services and management: Implications for Eco-DRR and blue carbon management for Eastern Samar, Philippines. Journal of Forest Research, 25(1), 1–11. https://doi.org/10.1080/13416979.2019.1696441

R Core Team (2025). R: A Language and Environment for Statistical Computing. R Foundation for Statistical Computing.

Rosenstock, I. M. (1974). The Health Belief Model and Preventive Health Behavior. Health Education Monographs, 2(4), 354–386. https://doi.org/10.1177/1090198 17400200405

Rosseel, Y. (2012). lavaan: An R package for structural equation modeling. Journal of Statistical Software, 48(2), 1–36. https://doi.org/10.18637/jss.v048.i02

Ruiz-Guevara, S. M., Quintero-Castañeda, C. Y., Hernández-Angulo, L. R., & Sierra-Carrillo, M. M. (2025). Environmental Psychology and Mangrove Reforestation in the Ciénaga Grande de Santa Marta, Colombia: An Approach to Ecosystem Restoration. World, 6(1), 24. https://doi.org/10.3390/world6010024

Salampessy, M. L., Febryano, I. G., & Ichsan, A. C. (2021). Community knowledge and involvement in mangrove ecosystem management in the coastal of Muara Gembong Bekasi. IOP Conference Series: Earth and Environmental Science, 891(1), 012024. https://doi.org/10.1088/1755-1315/891/1/012024

Sarker, A. H. M. R., Nobi, M. N., Roskaft, E., Chivers, D. J., & Suza, M. (2020). Value of the Storm-Protection Function of Sundarban Mangroves in Bangladesh. Journal of Sustainable Development, 13(3), 128. https://doi.org/10.5539/jsd.v13n3p128

Savari, M., Damaneh, H. E., & Damaneh, H. E. (2024). Conservation behaviors of local communities towards mangrove forests in Iran. Global Ecology and Conservation, 56, e03311. https://doi.org/10.1016/j.gecco.2024.e03311

Schultz, P. W., Gouveia, V. V., Cameron, L. D., Tankha, G., Schmuck, P., & Franěk, M. (2005). Values and their Relationship to Environmental Concern and Conservation Behavior. Journal of Cross-Cultural Psychology, 36(4), 457–475. https://doi.org/10.1177/0022022105275962

Seriño, M. N., Ureta, J. C., Baldesco, J., Galvez, K. J., Predo, C., & Seriño, E. K. (2017). Valuing the Protection Service Provided by Mangroves in Typhoon-hit Areas in the Philippines. Economy and Environment Program for Southeast Asia (EEPSEA).

Simpao, A. C., & Yabut, H. (2022). Conservation Behavior Among Students in a University in Metro Manila: The Moderating Role of Attitudes on the Impact of Environmental Knowledge. Asia-Pacific Social Science Review, 22(3), 95-108. https://doi.org/10.59588/2350-8329.1466

Susilo, H., Takahashi, Y., & Yabe, M. (2017). Evidence for Mangrove Restoration in the Mahakam Delta, Indonesia, Based on Households’ Willingness to Pay. Journal of Agricultural Science, 9(3), 30. https://doi.org/10.5539/jas.v9n3p30

Tahir, H. (2023). Local People’s Attitudes Towards Mangrove Conservation Effort in East Kalimantan, Indonesia. Interdisciplinary Social Studies, 2(11), 2517–2536. https://doi.org/10.55324/iss.v2i11.519

Tejada, U. A. & Cauilan, A. M. C. (2019). Knowledge, attitude and practice of coastal communities on mangrove benefits, conservation and rehabilitation. International Journal of Biosciences, 14(3), 446-462. http://dx.doi.org/10.1269 2/ijb/14.3.446-462

Therneau, T. M. (2024). A package for survival analysis in R. Available online: https://cran.r-project.org/web/packages/survival/vignettes/survival.pdf

Thomas, N., Lucas, R., Bunting, P., Hardy, A., Rosenqvist, A., & Simard, M. (2017). Distribution and drivers of global mangrove forest change, 1996–2010. PLOS ONE, 12(6), e0179302. https://doi.org/10.1371/journal.pone.0179302

Tianyu, J., & Meng, L. (2020). Does education increase pro-environmental willingness to pay? Evidence from Chinese household survey. Journal of Cleaner Production, 275, 122713. https://doi.org/10.1016/j.jclepro.2020.122713

Ting, M., Qingwen, M., Kun, X., & Weiguo, S. (2021). Resident Willingness to Pay for Ecotourism Resources and Associated Factors in Sanjiangyuan National Park, China. Journal of Resources and Ecology, 12(5). https://doi.org/10.5814/j.issn. 1674-764x.2021.05.012

Ureta, J. C. P., Abueg, L. C., & Inocencio, A. B. (2021). Towards Establishment of a Payment for Ecosystem Services (PES) in Protected Areas: The Case of Mounts Banahaw and San Cristobal in Quezon Province, Philippines. DLSU Business & Economics Review, 31(1), 1-15.

Valenzuela, R., Yeo-Chang, Y., Park, M. S., & Chun, J.-N. (2020). Local People’s Participation in Mangrove Restoration Projects and Impacts on Social Capital and Livelihood: A Case Study in the Philippines. Forests, 11(5), 580. https://doi.org/ 10.3390/f11050580

Van Hespen, R., Hu, Z., Borsje, B., De Dominicis, M., Friess, D. A., Jevrejeva, S., ... & Bouma, T. J. (2023). Mangrove forests as a nature-based solution for coastal flood protection: Biophysical and ecological considerations. Water Science and Engineering, 16(1), 1-13. https://doi.org/10.1016/j.wse.2022.10.004

Vaske, J. J. (2008). Survey Research and Analysis (2nd Edition). Venture.

Vo Trung, H., Viet Nguyen, T., & Simioni, M. (2020). Willingness to pay for mangrove preservation in Xuan Thuy National Park, Vietnam: Do household knowledge and interest play a role? Journal of Environmental Economics and Policy, 9(4), 402–420. https://doi.org/10.1080/21606544.2020.1716854

Ward, R. D., Friess, D. A., Day, R. H., & Mackenzie, R. A. (2016). Impacts of climate change on mangrove ecosystems: A region by region overview. Ecosystem Health and Sustainability, 2(4), e01211. https://doi.org/10.1002/ehs2.1211

Welsh, M. P., & Poe, G. L. (1998). Elicitation Effects in Contingent Valuation: Comparisons to a Multiple Bounded Discrete Choice Approach. Journal of Environmental Economics and Management, 36(2), 170–185. https://doi.org/10. 1006/jeem.1998.1043

Wyss, A. M., Knoch, D., & Berger, S. (2022). When and how pro-environmental attitudes turn into behavior: The role of costs, benefits, and self-control. Journal of Environmental Psychology, 79, 101748. https://doi.org/10.1016/j.jenvp.2021.10 1748

Zech, S. T., Eastin, J., & Bonotti, M. (2023). Policy implementation in crisis: Lessons from the Philippines. Asia & the Pacific Policy Studies, 10(1–3), 28–45. https://doi.org/ 10.1002/app5.378

Additional Files

Published

2025-09-21

Issue

Section

Regular Research Articles

Categories

How to Cite

How Much and Why? Conservation Behavior and Valuation in Katunggan Coastal Ecopark, Mindanao Island, Philippines. (2025). Forest and Society, 9(2), 641-664. https://doi.org/10.24259/fs.v9i2.43851

Similar Articles

1-10 of 203

You may also start an advanced similarity search for this article.