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Drought is a signifcant climate feature in Hawai‘i and the U.S.-Affliated Pacifc Islands (USAPI), at times causing severe impacts across multiple sectors. Below-average precipitation anomalies are often accompanied by higher-than-average temperatures and reduced cloud cover. The resulting higher insolation and evapotranspiration can exacerbate the effects of reduced rainfall. These altered meteorological conditions lead to less soil moisture. Depending on the persistence and severity of the conditions, drier soil can cause plant stress, affecting both agricultural and natural systems. Hydrological effects of drought include reductions in streamfow, groundwater recharge, and groundwater discharge to springs, streams,...
Climate change poses significant challenges to food production, natural resources management, and public health. Initiatives like ‘Climate-Smart Agriculture” (e.g., FAO, UNDP) and the growing field of ‘Climate Services’ are emerging globally to provide stakeholders (producers, managers, communities) with better climate-related information and solutions to cope with increasing climate variability. The long-term relationships and diverse professional networks cultivated by Cooperative Extension faculty places them in a unique and critical position to help clients and stakeholders sustain and improve food security, ecosystem services, and local health and livelihoods in the face of climate change. The intent of the...
Drought is a prominent feature of Hawaiʻi’s climate. However, it has been over 30 years since the last comprehensive meteorological drought analysis, and recent drying trends have emphasized the need to better understand drought dynamics and multi-sector effects in Hawaiʻi. Here, we provide a comprehensive synthesis of past drought effects in Hawaiʻi that we integrate with geospatial analysis of drought characteristics using a newly developed 100-year (1920–2019) gridded Standardized Precipitation Index (SPI) dataset. The synthesis examines past droughts classified into five categories: Meteorological, agricultural, hydrological, ecological, and socioeconomic drought. Results show that drought duration and magnitude...
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Hawaiʻi is known as the “endangered species capital of the world,” an unwelcomed label brought on by more than a century of habitat destruction, invasive species spread, and pollinator and seed disperser declines. Hawaiʿi is home to 400 endangered plant species, most of which are found nowhere else in the world. Conservation managers have spent decades putting enormous effort into carefully reintroducing thousands of rare plants into protected forests, but the ability of reintroduced populations to persist over the long-term is unknown, especially as climate change shifts patterns of temperature, rainfall and species interactions. Managers need more information to identify locations that will be the most suitable...
map background search result map search result map Assessing the Effects of Management Interventions and Climate Variability on Reintroduced Hawaiian Rare Plants Assessing the Effects of Management Interventions and Climate Variability on Reintroduced Hawaiian Rare Plants