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NPP Temperate Forest: OTTER Project Sites, Oregon, USA, 1989-1991, R1


DatasetNPP Temperate Forest: OTTER Project Sites, Oregon, USA, 1989-1991, R1
Release date2013-09-04
Time period1989-01-01 to 1991-12-31

Usage Metrics

CountEarliest DateLatest DateData Usage
Citations120162016Publications citing this dataset
Downloads2772007-12-062017-11-201061 total files downloaded


This data set provides net primary productivity (NPP) estimates and associated field measurements for six sites located along the 250-km, west-east transect of the Oregon Transect Ecosystem Research Project (OTTER) in the Pacific Northwest. Leaf area indices, biomass, and NPP vary about 10-fold across the OTTER transect. Leaf area index (LAI) ranges from 0.4 m2/m2 at the Juniper/Sisters site to 8.6 m2/m2 at the Scio western Cascade site. Total NPP follows a similar trend with the Juniper/Sisters site having the lowest NPP value (300 g/m2/yr) and the Scio site having the highest (2,250-2,570 g/m2/yr). Total tree biomass across the transect ranges from to 1,080 g/m2 at Juniper/Sisters to 71,080 g/m2 at Cascade Head. Vegetation intercepts 22% to 99.5% of incident photosynthetically active radiation along the transect. There is one data file (.csv format) with this data set. Revision Notes: Only the documentation for this data set has been modified. The data files have been checked for accuracy and are identical to those originally published in 1999.

Dataset documentation


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Crosscite Citation Formatter
Waring, R.H., B.E. Law, and B. Bond. 2013. NPP Temperate Forest: OTTER Project Sites, Oregon, USA, 1989-1991, R1. ORNL DAAC, Oak Ridge, Tennessee, USA.

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Data Files

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Data File (Granule)File SizeDates
ott_npp.txt 14.7KB 1989-01-01 to 1991-12-31

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Dataset has 1 companion files.

  • NPP_OTTER.pdf