Mark Nay

US Forest Service | FS · Pacific Northwest Research Station

Douglas-fir equations for aboveground biomass components were developed for the Long-Term Ecosystem Productivity Study in the Siskiyou Mountains of southwestern Oregon. The equations were based on data from 32 Douglas-fir trees randomly selected via probability proportional to size from a single stand. Our equations were then compared with nationally...

Aboveground growth rates of seedlings of bunchberry (Cornus canadensis L.), oval-leaf blueberry (Vaccinium ovalifolium Sm.), salmonberry (Rubus spectabilis Pursh), devilsclub (Oplopanax horridus (Sm.) Miq.), and western hemlock (Tsuga heterophylla (Raf.) Sarg.) were compared in a study of their responses to an artificial light gradient in an Or...

Aboveground growth rates of seedlings of bunchberry (Cornus canadensis L.), oval-leaf blueberry (Vaccinium ovalifolium Sm.), salmonberry (Rubus spectabilis Pursh), devilsclub (Oplopanax horridus (Sm.) Miq.), and western hemlock (Ts uga heterophylla (Raf.) Sarg.) were compared in a study of their responses to an artifcial light gradient in an Oregon...

The coastal temperate rainforest (CTR) along the northwest coast of North America is a large and complex mosaic of forests and wetlands located on an undulating terrain ranging from sea level to thousands of meters in elevation. This biome stores a dynamic portion of the total carbon stock of North America. The fate of the terrestrial carbon stock...

Forest carbon budgets are of increasing concern because of their linkages with changing climate. The potential source strength of northern forested ecosystems is of great interest due to the large carbon stock of these systems, especially the extensive peatlands. Where very few long-term measurements of soil carbon cycles have been made, such as th...

We examined the influence of windthrow on the hydrochemistry of small Spodosol-dominated catchments on a 200 hectare forested island located in the panhandle of southeast Alaska. Four watersheds (0.3 to 0.8 ha) with contrasting disturbance histories were selected and sampled using an event based sampling scheme. Baseflow conditions and six rainstor...

Studies use different methods to measure soil respira- tion. Reviews of the different methodologies can be Direct measures of soil-surface respiration are needed to evaluate found in Schlesinger (1977), Anderson (1982), Rolston with the highest initial C content; this box had elevated soil tempera- tures early in the trial, suggesting a composting...

Summary 1 We examined how rapidly soils can change during secondary succession by obser- ving soil development on 350-year chronosequences in three pristine forest ecosystems in southeast Alaska. 2 Soil surfaces, created by different windthrow events of known or estimated age, were examined within each of three forest stands (0.5-2.0 ha plots; i.e....

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