NPP Tropical Forest: John Crow Ridge, Jamaica, 1974-1978, R1

Metadata Updated: August 1, 2018

This data set contains five NPP data files and three climate data files (ASCII .txt format). There is one NPP file for each of the five sub-types of upper montane tropical forest located along John Crow Ridge in the Blue Mountains of Jamaica. Biomass, productivity, tree mortality, standing crop of litter, LAI, and nutrient content of leaf fall were measured from 1974 to 1978. Long-term climate data are available from Cinchona Botanic Gardens, approximately 3 km south of the John Crow Ridge study area and at similar elevation.The John Crow Ridge study areas (18.08 N 76.65 W) consist of 8 to 10 contiguous 10 m x 10 m permanent plots. The forests are of low stature and appear to be completely undisturbed. The forest floor at one sub-site (Mor Ridge) was overlain by a 30-50 cm layer of mor humus with a high C/N ratio.ANPP was estimated to be between 654-997 g/m2/year (sum of litterfall and trunk/branch increment), or 854-1,057 g/m2/year (including tree mortality). These figures are lower than for lowland tropical forests with greater leaf turnover and reflect the relatively low stature of the upper montane forest plots. Above-ground biomass was estimated by both destructive methods and nondestructive regression analysis. Values ranged from 23,000 to 34,000 g/m2. Below-ground biomass (5,370 g/m2) was determined for one site by harvesting roots to a depth of 50 cm. LAI for trees plus understory, where measured, was 5.5-5.7 m2/m2.

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Public: This dataset is intended for public access and use. License: U.S. Government Work

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Metadata Created Date August 1, 2018
Metadata Updated Date August 1, 2018

Metadata Source

Harvested from NASA Data.json

Additional Metadata

Resource Type Dataset
Metadata Created Date August 1, 2018
Metadata Updated Date August 1, 2018
Publisher ORNL_DAAC
Unique Identifier C1000000033-ORNL_DAAC__1
Maintainer Email
Id {$oid: 55942aa8c63a7fe59b499c27}
Public Access Level public
Bureau Code 026:00
Metadata Context
Schema Version
Catalog Describedby
Harvest Object Id 22cb4123-dbe3-4030-91da-d20617ad4c7e
Harvest Source Id 39e4ad2a-47ca-4507-8258-852babd0fd99
Harvest Source Title NASA Data.json
Data First Published 2013-09-13T00:00:00.000Z
Language en-US
Metadata Type geospatial
Data Last Modified 2013-09-13T00:00:00.000Z
Program Code 026:001
Publisher Hierarchy U.S. Government > National Aeronautics and Space Administration > ORNL_DAAC
Source Datajson Identifier True
Source Hash 50db77044370d2c3c8b0ee37bd5792af32f87277
Source Schema Version 1.1
Spatial 18.08 -76.65
Temporal 1871-01-01T00:00:00Z/1983-03-31T00:00:00Z
Category geospatial

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