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The Pacific Islands Climate Adaptation Science Center (PI CASC) supports sustainability and climate adaptation in communities across the Pacific Islands by providing natural and cultural resource managers with access to actionable science specific to the region. PI CASC is hosted by the University of Hawaiʻi at Mānoa (UHM) with consortium partners at the University of Hawaiʻi at Hilo (UHH) and the University of Guam (UOG). During the period of 2019 - 2024, the PI CASC consortium will strive to i) build resiliency and sustainability in ecosystems and communities to climate change impacts; ii) strive to develop the best actionable climate science, while maintaining a non-advocacy stance; and iii) apply the elements...
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PI-CASC regularly interacts with a diverse and extensive network of stakeholder organizations at federal, territory, state, county, and local levels across the Pacific Region, supporting communication and iterative problem solving between researchers, managers, and decision makers. In addition to these partnerships, PI-CASC has two important ongoing collaborative initiatives. Pacific Islands-Alaska CASC collaboration The PI-AK CASC collaboration is aimed at bringing together scientist and resource managers from the Pacific and Alaska regions to share insights on related climate adaptation challenges in Ridge-to-Reef (R2R) and Icefield-to-Ocean (I2O) ecosystems. Similarities in landscapes and communities in these...
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Pacific Islands CASC engages in a variety of science co-production activities across the region with the goal of developing usable science with resource managers to help them better integrate adaptation strategies for fish, wildlife, water, land, and people into their decision making and planning. Our flagship program for knowledge co-production is the Manager Climate Corps. MCC was developed at the PI-CASC consortium member institution, the University of Hawaiʻi at Hilo, to support and build connections between natural and cultural resource managers, researchers, and graduate students on Hawaiʻi Island through in-person networking opportunities and to promote the benefits of collaborative, stakeholder-driven research...
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Freshwater is a critical driver for island ecosystems. In Hawaiʻi, though rainfall intensity has increased, total rainfall has been on the decline for the last two decades and, as a result, streamflow has also been reduced. The changes in dynamic patterns of streamflow could result in impacts to river, estuarine, and coastal habitats. In turn, these changes also affect the nine native Hawaiian aquatic species found in these habitats at different stages of their amphidromous life cycle (in which they migrate from fresh to salt water or vice versa). To examine how changes in streamflow regime have impacted habitat quality for native migratory aquatic species, an ongoing project has been examining statewide long-term...
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American Samoa is vulnerable to sea-level rise in part due to the steep terrain of its islands. This terrain requires the majority of the islands’ villages and infrastructure to be located along thin strips of coastal land. The situation is worsened by the recently recognized rapid sinking of the islands, which was triggered by the 2009 Samoa earthquake and is predicted to last for decades. This subsidence is estimated to lead to roughly twice as much sea-level rise by 2060 as what is already predicted from climate change alone. As a result, the timeline of coastal impacts in American Samoa will be decades ahead of similar island communities in the Pacific. Despite this urgency, decision-makers in the region lack...
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Hawaiʻi and the United States Affiliated Pacific Islands face unique challenges in adapting to climate change due to geographic isolation, coastal hazards, close cultural and economic links natural resources, and underserved populations. To address these problems, the PI-CASC works to develop actionable research products through collaborative engagement with cultural and natural resource manager to ensure applicability of the research. In efforts to further support these co-production processes, the PI-CASC Management Climate Corps was developed to connect local natural resource managers, researchers, cultural practitioners, policy professionals, community leaders, and graduate students on Hawaiʻi Islands. The...
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Wildfire is a significant yet underappreciated issue on Pacific Islands that threatens ecosystems from ridge-tops to reefs, including native species, waters, human communities, and natural and cultural resources. In the Hawaiian archipelago, the percentage of land burned annually is equal or greater than that burned across the western United States, with most fires occurring in drier nonnative grasslands and shrublands, which make up 25% of Hawaiʻi’s total land area. As island communities face increased wildfire risk due to climate change and other factors, such as continued plant invasions, collaborative bio-cultural stewardship approaches to adaptation will be critical to wildfire management. Fire causes and effects...
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The Pacific Islands CASC aims to provide capacity building opportunities for undergraduate and graduate students, post-docs, and early career professionals across the region. Direct participation on PI-CASC co-produced research projects will help them gain invaluable experience to prepare for future careers in research, resource managment, and policy, and help to enhance future professional workforce capacity in their own Pacific communities. Our current programs are: UH Manoa Graduate Scholars This program provides full funding opportunities to graduate students whose research reflects DOI, USGS, and PI-CASC priorities on climate science in the region. The students will also have professional development opportunities...
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Detailed, reliable projections of future changes in climate are needed by Hawai‘i’s resource managers, such as water utilities managers, land managers, conservation organizations, and decision makers. However, global climate models (or “general circulation models”), which are currently the most commonly used tool for projecting future climate variations, are known for representing large-scale climate patterns and are not ideal for simulating climate processes at small spatial scales, such as those relevant to Hawai’i’s climate. Traditionally, the technique of “downscaling” is used to bridge this gap between global climate models and local climate conditions. Due to the lack of downscaled datasets for Hawai’i, however,...
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Globally, shorelines provide a vital defense system against extreme weather and erosion events and are a critical public and cultural resource. Within the state of Hawaiʻi, coastal vulnerability and historic change has been well documented and studied on the Islands of Oʻahu, Maui, and Kauaʻi, but this has not been done for the Island of Hawaiʻi, the largest and most diverse island in the Hawaiian archipelago. For example, Hurricane Lane caused major flooding and coastal erosion on Hawaiʻi Island in 2018, but no comprehensive baseline shoreline dataset exists to document and quantify the changes it caused. To help fill this knowledge gap, this study aims to create a shoreline inventory of the entire coastline...
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The Republic of Palau, a Freely Associated State of the U.S. and a global leader in ocean conservation, recently implemented the Palau National Marine Sanctuary, which closed 80% of its ocean to fishing. As offshore fish become scarcer in the domestic market, managers have begun to worry about increased harvesting pressure on already overfished nearshore environments. This pressure, in addition to stressors from land-use change, sea-level rise, and warming oceans, could threaten the food and economic security of many Palauans. However, adaptively managing stressors in an integrated way can mitigate declines and even promote recovery, while still being cost-effective, resulting in direct benefits to coastal communities....
    map background search result map search result map Preliminary Investigation of Machine Learning Approaches to Improve Projections of Future Climate in Hawai‘i Examining How Ridge-to-Reef Governance in Palau Can Enhance Coastal Food Security in a Changing Climate Generating a Shoreline Inventory for Hawai‘i Island to Increase Resilience in the Face of Rising Sea Levels Sea-Level Rise Viewer for American Samoa: A Co-Developed Visualization and Planning Tool Connecting Ecosystems from Mountains to the Sea in a Changing Climate Increasing Climate Extension in the Pacific Islands Climate Adaptation Science Center Pacific Islands Climate Adaptation Science Center Consortium - Hosted by University of Hawai‘i, Mānoa (2019-2024) Science Co-Production Capacity Building Through Student Programs Regional Collaborations Future of Fire in the Pacific Islands: Towards a National Synthesis for Wildland Fire Under a Changing Climate Examining How Ridge-to-Reef Governance in Palau Can Enhance Coastal Food Security in a Changing Climate Sea-Level Rise Viewer for American Samoa: A Co-Developed Visualization and Planning Tool Preliminary Investigation of Machine Learning Approaches to Improve Projections of Future Climate in Hawai‘i Generating a Shoreline Inventory for Hawai‘i Island to Increase Resilience in the Face of Rising Sea Levels Connecting Ecosystems from Mountains to the Sea in a Changing Climate Pacific Islands Climate Adaptation Science Center Consortium - Hosted by University of Hawai‘i, Mānoa (2019-2024) Science Co-Production Capacity Building Through Student Programs Regional Collaborations Future of Fire in the Pacific Islands: Towards a National Synthesis for Wildland Fire Under a Changing Climate Increasing Climate Extension in the Pacific Islands Climate Adaptation Science Center