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Distribution and behavior of barren-ground caribou in relation to weather and parasitic insectsRelationships between weather and the activity of mosquitoes (Culicidae) and oestrid flies (Oestridae), and responses by caribou (Rangifer tarandus) to insect harassment, were examined near Milne Point, Alaska. Weather conditions were usually unfavorable for insects within 20 km of the Beaufort Sea, and were least favorable within 1-3 km of the eoast. Weather affected the occurrence more than the level of insect activity. Mosquitoes were rarely active within 1 km of the coast; maritime weather conditions had little effect on oestrids. Weather conditions and insect activity were more variable through time than through space： this necessitated models predicting: (1) the presence of insects, and (2) levels of insect activity when insects were present. Insect harassment caused caribou to travel rapidly to coastal areas at the expense of feeding and lying, and form large, mixed groups. Insect activity was most highly correlated with caribou rate of travel and behavior.
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Impact of the COVID-19 Pandemic on Travel Mode Choices and Fatal Crash RatesThe COVID-19 pandemic caused unprecedented disruptions to human mobility and transportation systems worldwide, significantly altering travel behavior and mode choices. This study investigates these changes within the Pacific Northwest region of the United States, encompassing a mix of urban and rural contexts with diverse socio- demographic characteristics. Using survey data from 807 respondents, we analyze transportation patterns before and during the pandemic, focusing on shifts in mode shares and probabilities of switching travel modes. The analysis incorporates McNemar’s test, logistic regression, and latent class analysis (LCA) to evaluate the extent of these shifts and identify key influencing factors. The results reveal a substantial reduction in public transport usage, reflecting heightened concerns over health risks and limited operational capacity during the pandemic. In contrast, there was a notable increase in the use of private vehicles and active transportation modes, such as walking and cycling. Demographic variables, including age, income, employment status, and gender, played significant roles in shaping travel behavior, with younger and lower-income individuals exhibiting higher probabilities of mode change. The latent class analysis highlighted distinct behavioral clusters, indicating that travel behavior responses were not uniform across populations. A logistic regression model further underscored the importance of pre-pandemic travel habits, socio-economic conditions, and pandemic-related concerns in influencing mode choice decisions. Additionally, traffic safety outcomes showed notable variations, with overall crash rates decreasing during the lockdowns but fatality rates rising due to riskier driving behaviors, such as speeding on roads. Crash patterns varied across urban and rural areas, with urban crashes experiencing a slight decline in proportion, while rural crashes increased.
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FAA EAGLE Avgas Transition: Considerations for Impacts on Alaskan Supply ChainsFederal bodies have called for a directed transition away from 100 octane low lead aviation gas (100LL avgas) due to public health concerns. Leaded avgas currently powers piston engine aircraft in general aviation and air taxi fleets, serving both recreational and commercial purposes. In considering the unleaded avgas transition, we must acknowledge that public policy frequently generates unintended consequences that reduce anticipated net benefits for subgroups of the population. Particular attention should be placed on regions which are heavily reliant on piston aircraft for core commercial services to remote environments, and where infrastructure adjustments are highly complex and costly. Alaska is one such key context. This brief outlines considerations for potential core supply chain impacts in this remote, aviation-dependent environment and which communities are particularly exposed. While Alaska is 48th in total population, the state is 1st in total volume of intra-state air cargo delivery. Over 80% of the state's communities lie off the road system, and piston engine aircraft are an important component of that commercial fleet. Leveraging granularity in the Bureau of Transport Statistics (BTS) T-100 database, we find that over 50% of carriers reporting intra-Alaska flights had at least one piston engine aircraft in their fleet. In 2023, T-100 data recorded 130,850 commercial piston aircraft flights transporting 201,729 passengers and 30.6M lbs of cargo between Alaskan communities. For non-hub ‘bush’ communities, almost 50% of all commercial flights, 30% of passengers, and 20% of recorded cargo were delivered by piston aircraft. We map community reliance across the state, with particular importance found for off-road destinations in the Southeast, Southwest, and Kodiak. A complete tabular breakdown of piston-engine market shares is generated for all Alaskan destination communities. We conclude by providing key economic questions for Alaska to address ahead of a fuel transition. Assuring the technical performance of unleaded fuel alternatives in Alaskan environments is foundational. Then, to most efficiently utilize the preparation window, policymakers and sector leadership should understand the impact of increased fuel expenses on overall linehaul cost per ton-mile, the share of cost increases borne by service communities, impacts on route viability, and the potentially complex process of staging any necessary support infrastructure such as fuel storage to off-road communities in Alaska's narrow barge season.
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Southeast Alaska: Close to nature's heartThank you for your interest in multicultural education in Alaska! This book provides an overview of Southeast Alaska, and includes several diverse lesson plans pertaining to the region. Our content was developed through a project-based study of Multicultural Education and Alaska Studies through the UAS MAT secondary education program. The title is an adaptation of “Keep close to Nature's heart... and break clear away, once in a while, and climb a mountain or spend a week in the woods. Wash your spirit clean.” - John Muir quoted by Samuel Hall Young in Alaska Days with John Muir (1915) chapter 7
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From silt to salt: A multicultural teaching guide to Southcentral AlaskaUniversity of Alaska Southeast Masters in Teaching Students Sophia Butler, Jerry Demmert, Shaun Nesheim, Meghan O’Leary, Reuben Seidl, and Mason Shearer, have written this book for those interested in Alaska, particularly educators. It includes lesson plans focusing on place-based and multicultural education as well as a detailed introduction to Southcentral Alaska, the most populated and varied region in the state.
