Upland Forest Long-term Monitoring

Habitat Research & Monitoring - Upland Forest

Upland Forest Long-term Monitoring

NorthForkCedar

SPU staff establish permanent sample plots in old-growth forest.

A series of 21 permanent sample plots (PSPs) was established in the lower portion of the municipal watershed during the 1940’s to the 1970’s. Although they were originally established to provide timber growth and yield information, they also provide a valuable dataset on forest development. We resampled 17 of these plots from 2003 to 2006.

From 2003 to 2005, we established and sampled an additional 115 PSPs throughout the upland forest, of which 37 are located in old-growth forest. These more recent plots use a systematic random sampling design, by placing a grid with a random starting point over the entire watershed. This design allows us to sample the entire upland forest and to generalize the findings to areas not sampled.

We will continue to sample all of these plots periodically. The long-term monitoring data from these plots will allow us to track forest development, as well as detect any emerging threats such as invasive species that may be negatively affecting the habitat. The data will also help us evaluate how climate change is affecting the forest over time.

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