growth and yield of
black spruce in alaska
Download MSc Thesis (PDF)
Black spruce, Picea mariana (Mill.) B.S.P., is largely overlooked in Alaska because of its small size and slow growth. Growth and yield information is therefore limited or nonexistent.
Presented here are the first polymorphic site index (height-age) curves and height-diameter functions for predicting height and volume for Alaska black spruce. Models are accurate for trees up to 50 feet in height and 8 inches DBH. Predicted stem volumes range from 0.006 cubic feet to 21.8 cubic feet for trees between 0.5 and 11.5 inches DBH. Sampled tree dimensions range from 5.5 to 78.0 feet tall and from 0.4 to 11.0 inches DBH. Sampled breast-height ages range from 49 to 257 years; average age-to-breast-height is 26 years.
This research, although limited, also characterizes general stand-level structure and community composition for Alaska black spruce. Sixty Permanent Sample Plots (PSPs) representing 20 stands were established throughout the Tanana Valley, with stand inventory conducted according to a consistent protocol. Stand densities range from 137 to 2,907 trees per acre; stand volumes ranged from 8 to 2,507 cubic feet per acre. Stand density index values range from 6 to 453. Periodic remeasurement of PSPs will yield valuable information about stand evolution and community type change.
Download synopsis (PDF)
I have written and edited these in collaboration with principal investigators and NPRB staff. They were created to convey the substance and relevance of each completed NPRB funded marine research project in just two pages. I also designed a synopsis template to provide a consistent visual theme and highlight key take-away messages. NPRB Project Synopses are appropriate as a “shoreline” of research for:
- Teachers and students of all ages and academic levels
- The public in Alaska and beyond, including tourists interested in marine mammals, seabirds, and the fishing industry
- Alaska residents, including Alaska Native communities, who depend on marine resources for subsistence or employment
- The scientific community of marine researchers
- Agencies responsible for managing North Pacific marine resources
Download booklet (PDF)
Providing Coastal Information in a Changing Climate
This 2010 booklet makes the case for the importance of ocean and coastal observing througout the U.S. I designed and produced it using materials provided by ocean observing groups. The regional associations use it as a key messaging tool; audiences include other coastal and ocean observing assocations, legislators, and the interested public. I am currently working with NFRA on updating this booklet.