Japan Geoscience Union Meeting 2021

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A (Atmospheric and Hydrospheric Sciences ) » A-CG Complex & General

[A-CG41] Coastal Ecosystems -2. Coral reefs, seagrass and macroalgal beds, and mangroves

Thu. Jun 3, 2021 5:15 PM - 6:30 PM Ch.07

convener:Yu Umezawa(Tokyo University of Agriculture and Technology), Toshihiro Miyajima(Marine Biogeochemistry Group, Division of Ocean-Earth System Science, Atmosphere and Ocean Research Institute, The University of Tokyo), Atsushi Watanabe(The ocean policy research institute, The Sasakawa peace foundation), Tomihiko Higuchi(Atmosphere and Ocean Research Institute, The University of Tokyo)

5:15 PM - 6:30 PM

[ACG41-P07] Applying DPSIR framework for blue carbon ecosystems assessment: The case of Busuanga Island, Palawan, Philippines

*Jay Mar Dioquito Quevedo1, Yuta Uchiyama2, Ryo Kohsaka2 (1.Tohoku University, 2.Nagoya University)

Keywords:blue carbon ecosystems, DPSIR framework, stakeholders, Philippines

Mangrove forests, seagrass meadows, and tidal marshes or collectively known as blue carbon ecosystems (BCEs) play important roles in reducing the risks and impacts of climate change through carbon sequestration and other essential ecosystem services. Despite this, records show that they are declining at various scales due to their vulnerability to natural and anthropogenic disturbances. Similar trends are observed at a local scale, particularly in the case of Busuanga Island, Palawan province in the Philippines, where BCEs along with other marine and coastal ecosystems are perceived to be threatened by a number of factors. To better understand and capture the state changes of coastal ecosystems with emphasis on BCEs, this study collected the drivers and pressures and their impacts on the coastal environments as well as existing management responses by interviewing 17 stakeholders representing community organizations, non-government organizations, and municipal level government units from the municipality of Busuanga. The interview results were analyzed by applying the Drivers-Pressures-State-Impact-Response (DPSIR) framework. The results of this study show that lack of institutional capacities (indirect driver) is the leading factor that hinders the progress or efficacy of coastal management. Most pronounced pressures caused by direct drivers to BCEs include overexploitation and coastal developments. The responses collected in the interviews can be grouped into ecosystems management, capacity building development, policies and implementation, and welfare and livelihood development. These results can be used to enhance or update existing management responses into more precise and contextualized measures in addressing specific impacts observed in the local areas.