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Folders: ROOT > ScienceBase Catalog > National and Regional Climate Adaptation Science Centers > Pacific Islands CASC > FY 2012 Projects ( Show direct descendants )

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Alpine plants are likely to be particularly vulnerable to climate change because of their restricted distributions and sensitivity to rapid environmental shifts occurring in high-elevation ecosystems. The well-studied Haleakalā silversword (‘āhinahina, Argyroxiphium sandwicense subsp. macrocephalum) already exhibits substantial climate-associated population decline, and offers the opportunity to understand the ecological and demographic mechanisms that underlie ongoing and predicted range shifts. We use nearly four decades of demographic monitoring for this threatened Hawaiian species, in combination with other biological, ecological and climate data to explore demographic responses across its entire range. We construct...
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Abstract (from http://onlinelibrary.wiley.com/doi/10.1002/joc.4862/abstract): Spatial patterns of rainfall in Hawai‘i are among the most diverse in the world. As the global climate warms, it is important to understand observed rainfall variations to provide context for future changes. This is especially important for isolated oceanic islands where freshwater resources are limited, and understanding the potential impacts of climate change on the supply of freshwater is critical. Utilizing a high-resolution gridded data set of monthly and annual rainfall for Hawai‘i from January 1920 to December 2012, seasonal and annual trends were calculated for every 250-m pixel across the state and mapped to produce spatially...
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Hawaiʻi is home to a rich diversity of native plants, about 90 percent of which are found nowhere else in the world. However, changing climate conditions may reduce the amount of suitable habitat for native plants and contribute to the spread of invasive plant species. The goal of this project was to better understand how Hawaiian native and invasive plants will respond to climate change. Scientists focused on 10 important native and five important invasive plant species, using over 35 years of data from thousands of locations in Hawai‘i to assess the plants’ preferred climate conditions and model their likely best future habitat based on climate change projections. The resulting maps and findings provide an initial...
map background search result map search result map Modeling Climate-Driven Changes to Vegetation in the Hawaiian Islands Modeling Climate-Driven Changes to Vegetation in the Hawaiian Islands