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Effects of fire on composition, biomass, and nutrients in oak scrub vegetation on John F. Kennedy Space Center, FloridaFour stands of oak scrub two, four, eight, and 25 years since fire were sampled with permanent 15 m line transects. Percent cover by species was determined. Plant samples were analyzed for a variety of substances. Transects were resurveyed in 1985 for vegetation parameters. Nutrient pools in biomass were calculated from biomass data and tissue nutrient concentrations. Soil nutrient pools were calculated from nutrient concentrations and bulk density. Species distribution and soil chemical properties were found to be closely related to water table depth. The following fire-related conclusions are reached: (1) major structural changes occur in scrub after fire in that shrub height is reduced and requires four to six years to exceed 1 m; (2) reduction in shrub height affects the suitability of scrub for the Florida scrub jay (3) live biomass increases with time since fire; (4) nutrient concentrations in live biomass do not change with time since fire; (5) species composition and richness are little changed after fire; and (6) imposition of a continued regime of burning on a three-year cycle may have adverse impacts not indicated by the recovery of scrub from a single fire.
Document ID
19880006800
Acquisition Source
Legacy CDMS
Document Type
Technical Memorandum (TM)
Authors
Schmalzer, Paul A. (Bionetics Corp. Cocoa Beach, FL, United States)
Hinkle, C. Ross (Bionetics Corp. Cocoa Beach, FL, United States)
Date Acquired
September 5, 2013
Publication Date
July 1, 1987
Subject Category
Earth Resources And Remote Sensing
Report/Patent Number
NASA-TM-100305
NAS 1.15:100305
Report Number: NASA-TM-100305
Report Number: NAS 1.15:100305
Accession Number
88N16182
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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