ARC LTER Streams
Since 1983, the Streams Project at the Toolik Field Station has monitored
physical, chemical, and biological parameters in a 5-km, fourth-order reach
of the Kuparuk River near its intersection with the Dalton Highway and the
Trans-Alaska Pipeline. In 1989, similar studies were begun on a 3.5-km,
third-order reach of a second stream, Oksrukuyik Creek.
In each river, physical conditions (such as discharge and temperature), nutrient levels, primary production, insects, and fishes are monitored throughout the summer. Also, we conduct experimental fertilization of the Kuparuk River and Oksrukuyik Creek to determine the effects of added phosphorus and nitrogen on primary productivity, insect communities, and fish growth in arctic rivers. We are using this information to predict the relative importance of "bottom-up" and "top-down" controls in arctic stream ecosystems. [Note: 1996 was the last summer that Oksrukuyik Creek was fertilized.]
design and sites.
Access to metadata and data files.
Stream protocols and
Maps and photos of the