[Parameters: Topic='BIOSPHERE', Term='ECOLOGICAL DYNAMICS', Variable_Level_1='ECOSYSTEM FUNCTIONS']
NPP Tropical Forest: Barro Colorado, Panama, 1969-1990, R1Entry ID: BRR_NPP
Abstract: This data set contains three ASCII files (.txt format). One file provides net primary productivity (NPP) data for the moist lowland tropical forest on Barro Colorado Island, Panama. NPP estimates are based on field measurements of litterfall accumulation, tree growth and mortality, and herbivory. Above-ground biomass and LAI are also reported. The other two files provide climate data recorded ... onsite. Annual litterfall accumulation (leaf + twig + other litterfall) averaged 1,064 g/m2/year, excluding losses to herbivory, on the central plateau of the island and in the Lutz catchment (1969-1979) and 1,246 g/m2/year at Poacher's Peninsula (1986-1990). Herbivory due to insects (about 50 g/m2/year) was estimated from leaf litterfall (1974-1977) by measuring holes and gaps in fallen leaves. An additional 30 g/m2/year may be lost to vertebrate herbivores which leave no identifiable traces in litter traps. Coarse wood litterfall due to tree damage may represent an additional 46 g/m2/year. Above-ground biomass averaged 27,425 g/m2 based on inventory data collected every 5 years from 1985 to 2000 and allometric regression equations. Tree growth of 554 g/m2/year was based on above-ground biomass changes during the three census intervals. Tree mortality of 2-3% was estimated by recording dead or missing trees (1982-1990). LAI of 7.3 was based on the average area of leaves that fell per area of ground per year. Overall, above-ground NPP for Barro Colorado Island was estimated at 1,800 g/m2/year.
Data Set Citation
Dataset Originator/Creator: CONDIT, R.HUBBELL, S.P.WINDSOR, D.M.
Dataset Title: NPP Tropical Forest: Barro Colorado, Panama, 1969-1990, R1
Dataset Release Date: 2013
Dataset Release Place: Oak Ridge, Tennessee, U.S.A.
Dataset Publisher: Oak Ridge National Laboratory Distributed Active Archive Center
Data Presentation Form: Online Files
Dataset DOI: doi:10.3334/ORNLDAAC/157Online Resource: http://mercury.ornl.gov/ornldaac/send/query?term2=157&term2attribut...
Start Date: 1929-01-01Stop Date: 2000-12-31
ISO Topic Category
Data Set Progress
Role: TECHNICAL CONTACT
Phone: 507 227-6022
Fax: 507 232-5978
Email: rick at ctfs.stri.si.edu
Smithsonian Tropical Research Institute Aptdo. 2072, Balboa (or: Smithsonian Tropical Research Institute APO AA Miami 34002-0943, USA)
Role: DIF AUTHOR
Phone: (865) 574-7447
Email: uso at daac.ornl.gov
ORNL DAAC User Services Office Oak Ridge National Laboratory
City: Oak Ridge
Province or State: TN
Postal Code: 37831-6407
Extended Metadata Properties
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Creation and Review Dates
DIF Creation Date: 2013-09-12
Last DIF Revision Date: 2013-10-04