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Brazoria NWR Prairie Resilience Data


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Grace, J.B., Allain, L.K., and Moss, R., 2018, Brazoria NWR Prairie resilience data: U.S. Geological Survey data release,


In 1996, 400 tree-centered plots were established by first randomly choosing x- and y- coordinates from an imaginary grid overlaying the study area. Each random point was also randomly assigned a tree-size category from a pre-determined sampling scheme. The scheme was to include 20 trees from each of 5 size categories. Size/height categories were: less than 0.1m, 0.1-1m, 1-2m, 2-3m, and greater than 3.0m. To avoid excessive aggregation of samples, no more than 5 trees in a size class could be chosen within a 100-meter sub-area of the sampling grid. The nearest tree to each random point that met the pre-determined size requirement was identified and marked with a permanent aluminum tag. For the size category less than 0.1m tall, field-collected [...]


Point of Contact :
James B Grace
Originator :
James B. Grace, Larry K Allain, Rebecca Moss
Metadata Contact :
James B Grace
Publisher :
U.S. Geological Survey
Distributor :
U.S. Geological Survey - ScienceBase
SDC Data Owner :
Wetland and Aquatic Research Center
USGS Mission Area :

Attached Files

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Brazoria_NWR_Prairie_Resilience_data.csv 8.71 KB
Original FGDC Metadata

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These data are from a multi-year study of the effects of fire on Chinese tallow conducted at the Brazoria National Wildlife Refuge in coastal Texas, USA (Grace et al. 2005). A 12,150 hectare tract of prairie is located at the refuge. The objective of the study was to attempt to ascertain under what circumstances of Chinese tallow tree size, fuel loads, and other conditions is it possible to manage large tracts of prairie using prescribed fire. Because prescribed burning can seldom be accomplished at this site more frequently than once every two years, both because of logistics and because of fuel bed recovery, it was determined that the measure of success would be whether trees were shorter prior to the follow up burn than they were before the first burn.



  • USGS Data Release Products
  • USGS Wetland and Aquatic Research Center



Additional Information


Type Scheme Key
DOI doi:10.5066/P9MOHC0C

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