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Haleakalā National Park (HNP) and the surrounding landscape spans many different land cover types, some of which are undergoing vegetation changes that can reduce the amount of water that infiltrates into soil. Decreased soil infiltration can lead to the erosion of terrestrial habitats, increases in the amount of sediment entering aquatic habitats, and flooding of downstream areas as runoff increases after storms. Currently, HNP managers are attempting to control runoff and erosion to avoid loss and damage within park boundaries and parks located downstream. Managers in HNP have expressed a need for information on current and future runoff and erosion risk to help prioritize management within the park and other...
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Hawaiian forest birds are imperiled, with fewer than half the original > 40 species remaining extant. Recent studies document ongoing rapid population decline and project complete climate-based range losses for the critically endangered Kaua’i endemics ‘akeke’e (Loxops caeruleirostris) and ‘akikiki (Oreomystis bairdi) by end-of-century due to projected warming. Climate change facilitates the upward expansion of avian malaria into native high elevation forests where disease was historically absent. While intensified conservation efforts attempt to safeguard these species and their habitats, the magnitude of potential loss and the urgency of this situation require all conservation options to be seriously considered....
Changes in land cover can alter soil infiltration capacity and increase runoff and erosion, negatively affecting national parks and other public lands across Hawaiʻi. Reduced infiltration, the soil’s ability to allow water through it, within these lands may lead to serious consequences including terrestrial habitat damage by erosion, aquatic habitat damage by sedimentation, and downstream damage by flooding due to storm flows from overland flow, or runoff. To help understand potential damage, we calculated the probability of rainfall runoff across the Hawaiian landscape. By characterizing soil infiltration based on different land cover types (bare soil, grasses, and woody vegetation) and comparing them to large...
Categories: Publication; Types: Citation
Undisturbed trade-wind conditions compose the most prevalent synoptic weather pattern in Hawai‘i and produce a distinct pattern of orographic rainfall. Significant total rainfall contributions and extreme events are linked to four types of atmospheric disturbances: cold fronts, kona lows, upper-tropospheric disturbances, and tropical cyclones. In this study, a 20-yr (1990–2010) categorical disturbance time series is compiled and analyzed in relation to daily rainfall over the same period. The primary objective of this research is to determine how disturbances contribute to total wet-season rainfall on the Island of O‘ahu, Hawai‘i. On average, 41% of wet-seasonal rainfall occurs on disturbance days. A total of 17%...
Categories: Publication; Types: Citation


    map background search result map search result map Assessing the potential of translocating vulnerable forest birds by searching for novel and enduring climatic ranges Identifying the Risk of Runoff and Erosion in Hawaiʻi’s National Parks Assessing the potential of translocating vulnerable forest birds by searching for novel and enduring climatic ranges Identifying the Risk of Runoff and Erosion in Hawaiʻi’s National Parks