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Ryan C Toohey

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The Yukon River Basin, underlain by discontinuous permafrost, has experienced a warming climate over the last century that has altered air temperature, precipitation, and permafrost. We investigated a water chemistry database from 1982 to 2014 for the Yukon River and its major tributary, the Tanana River. Significant increases of Ca, Mg, and Na annual flux were found in both rivers. Additionally, SO4 and P annual flux increased in the Yukon River. No annual trends were observed for dissolved organic carbon (DOC) from 2001 to 2014. In the Yukon River, Mg and SO4 flux increased throughout the year, while some of the most positive trends for Ca, Mg, Na, SO4, and P flux occurred during the fall and winter months. Both...
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Northwest Boreal Science and Management Research Tool
Throughout Alaska, land managers and rural communities are faced with developing climate adaptation strategies to prepare for changes in landscapes, ecosystems and terrestrial habitats and their associated resources and services. One of the greatest challenges for land use managers and stakeholders in Alaska is the discovery and accessibility of relevant scientific information and data. The effective dissemination and communication of science relies on improving access for stakeholders to discover research, management plans, and data within their geographic area of interest. To respond to this need, the Northwest Boreal Landscape Conservation Cooperative (NWBLCC) has launched the Northwest Boreal Science and Management...
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Prioritizing Stream Temperature Data Collection to Meet Stakeholder Needs and Inform Regional Analyses
Changes in stream temperature can have significant impacts on water quality and the health and survival of aquatic fish and wildlife. Water managers, planners, and decision makers are in need of scientific data to help them prepare for and adapt to changes and conserve important resources. Scientists are tasked with ensuring that this data is produced in useful formats and is accessible to these stakeholders. In October 2015, project researchers hosted and facilitated a 1.5 day workshop, “Data Storage, Dissemination and Harvesting”, that brought together over 50 stakeholders from state and federal agencies, tribal governments, universities, and non-profit organizations interested in monitoring stream temperature...
Key Messages: 1. Ecosystem functions and the services they provide to people can support climate adaptation efforts. 2. A systems perspective that includes ecosystem services could contribute to the CASC research agenda in three interrelated ways: they can directly benefit current CASC stakeholder goals, they can provide co-benefits to CASC stakeholders, and they allow for full-benefit accounting of the impacts of choices made by natural resource managers. 3. Some existing CASC research aligns well with an ecosystem services framing and could be enhanced by understanding how the components fit into a broader multi-objective context. Notable bright spots for research in these dimensions concern coastal resilience...
Categories: Publication; Types: Citation
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Community Observations on Climate Change: Arctic Village, Fort Yukon, and Venetie, Alaska
For the Upper Yukon area of interior Alaska, climate change has become a daily fact of life, causing a wide range of impacts to the environment, and in some cases to community health. In 2015 the Alaska Native Tribal Health Consortium and the Alaska Climate Adaptation Science Center organized a series of assessments to better understand the impacts of climate change being observed in this region, including the communities Arctic Village, Fort Yukon, and Venetie. Support for this project was provided by USGS and by local tribal partners including Arctic Village Traditional Council, Gwichyaa Zhee Gwich’in Tribal Council, and the Venetie Village Council. The assessments were also performed in partnership with three...
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