Status: 

Completed

Title

Regeneration after Hurricane Hugo woody species > 1m tall and below 3m: percent cover (9 ha grid, El Verde)
Summary

Short name: 

LUQMetadata40

Data set ID: 

40

Abstract: 

Purpose was to document vegetation damage and recovery following Hurricane Hugo.

Dates
Date Range: 
1990-06-06 04:00:00 to 1993-11-05 04:00:00

Publication Date: 

2011-04-07 04:00:00
People

Additional Project roles: 

Name: Eda Melendez-Colom Role: Data Manager
Name: Nickolas Brokaw Role: Associated Researcher
Methodology

Methods: 

Summary of Plot Establishment: Sixty 2x2 m seedling and sapling plots were established during May of 1990 in the 9-ha grid by Francisco Calderon and Eduardo Flores. Plots are associated with appoximately every other grid pole, as described in the separate protocol instructions. Plots are representative of habitat frequencies, topographic locations and aspect, but plots with > 50% bare boulders, stream beds or trails were rejected. The corners of each plot are marked with 2 1/2 foot long PVC poles with fuchsia pink tops. Nylon string was tied around the perimeter. The inner corner of the plot is set 1+1 m away (usually N and E) from the  grid pole to avoid foot traffic, and is marked with an aluminum tag saying: Brokaw 9-ha seed/sap plot, LTER, June 1990 plus the grid pole number. A 1/2x2m seedling subplot has been marked with nylon cord, beginning at the inner corner and oriented N-S. Flagging leading to plots is orange.Visual estimate of cover of the various parameters: 0 = 0%; + =1%; 1 = 1- 5%; 2 = 5- 25%; 3 = 25-50%; 4 = 50-75%; 5 = > 75%; Habitat Measurements: Cover.  Percent cover is projected from 3 m height downward. Cover classes are: 0 (none), + (>0-1%; < 20 x 20 cm), 1(2% - 5%; > 20 x 20 cm but < 44 x 44 cm), 2 (6%-25%;> 44 x 44 cm but < 1 m2), 3 (26% - 50%; > 1 m2 but < 2 m2), 4 (51% - 75%; > 2 m2 but 3 m2), and 5 (76% - 100%; > 3 m2 to 4 m2). Cover is estimated for variables that could affect the growth or recruitment of woody plants, ie.: 1. Rocks (and boulders) 2. Leaf litter (including dead palm fronds and all downed leaves) 3. Twigs (<1 cm diam.) 4. Live trunks (> 20 cm diam. leaning or fallen over the plot) 5. Live tree canopy (excluding palms, see #8). 6. Dead tree canopy (includes suspended brach-falls) 7. Ferns 8. Grasses 9. Vines 10. Palm fronds (live leaves, excluding basal area of stem) 11. Other (comments and significant cover not included above) Slope is measured in degrees (right-hand scale) using inclinometers attached to a quarter-meter square frame. The measurement is taken with the frame placed near the middline of the plot, looking uphill. Aspect is recorded in degrees, facing downhill from the top of the plot. Summary of Plot Establishment: Sixty 2x2 m seedling and sapling plots were established during May of 1990 in the 9-ha grid by Francisco Calderon and Eduardo Flores. Plots are associated with appoximately every other grid pole, as described in the separate protocol instructions. Plots are representative of habitat frequencies, topographic locations and aspect, but plots with > 50% bare boulders, stream beds or trails were rejected. The corners of each plot are marked with 2 1/2 foot long PVC poles with fuchsia pink tops. Nylon string was tied around the perimeter. The inner corner of the plot is set 1+1 m away (usually N and E) from the grid pole to avoid foot traffic, and is marked with an aluminum tag saying: Brokaw 9-ha seed/sap plot, LTER, June 1990 plus the grid pole number. A 1/2 x 2m seedling subplot has been marked with nylon cord, beginning at the inner corner and oriented N-S. Flagging leading to plots is orange.

Instrumentation: 

Inclinometers attached to a quarter-meter square frame to measure slope

Status: 

Completed

Time Period: 

Short-Term