Streams & Rivers (Flowing Waters) Inventory & Monitoring in the Central Alaska Network of National Parklands

Simmons LT. Streams & Rivers (Flowing Waters) Inventory & Monitoring in the Central Alaska Network of National Parklands. 2008. National Park Service

Compared to National Parks in the lower 49, water quality in the Central Alaska Network (CAKN) is generally very good. However, both past and present human actions have had negative impacts on stream and river ecosystems in these parks. The legacy of mineral extraction, in particular gold mining, has had the most obvious effects. Some historically mined streams, for example, exhibit substantial water quality impairment due to excess heavy metal concentrations, elevated sediment loads and habitat alteration. Other current and past activities, such as ATV use, logging, road construction, and infrastructure development can have deleterious effects on water quality as well. Water quality is not just about safe drinking water. The Clean Water Act outlines a much more comprehensive vision, one that encompasses physical and biological as well as chemical aspects of water quality. To evaluate how park streams are responding to human activities, we are developing analytical tools for assessing the biological integrity of stream ecosystems. These tools, which are used by water quality agencies all around the world, use the status or health of aquatic macroinvertebrate communities as indicators of the status or health of the stream ecosystem as a whole. These tools will allow park managers to accurately assess the effects of management actions on water quality in park streams, as well as to evaluate the progress of restoration projects. OBJJECTIVES -Determine long-term trends in annual and seasonal flow patterns in selected streams and rivers -Determine long-term trends in chemical and biological measures of water quality -Determine long-term trends in the composition and spatial distribution of aquatic communities, including macroinvertebrates and diatoms -Develop tools for park managers to assess biological water quality in selected streams and rivers -Monitor changes in the distribution of anadromous and resident fish species

Type
Project
Authors
Simmons, L.
Publisher
National Park Service
Units
CAKN , DENA , WRST , YUCH
Keywords
Aquatic Communities, Diatoms, flow patterns, freshwater fishes, Macroinvertebrates, Rivers, Streams, Water Quality
Subjects
Ecological Framework: Water | Hydrology | Surface Water Dynamics , Ecological Framework: Water | Water Quality | Water Chemistry , Ecological Framework: Water | Water Quality | Aquatic Macroinvertebrates and Algae , Ecological Framework: Biological Integrity | Focal Species or Communities | Freshwater Communities , Ecological Framework: Biological Integrity | Focal Species or Communities | Fishes

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