LUQ DATA SET METADATA

Completed

Data Files and Variables

Data File Identifier Data File Collected
Wood fall from Hurricane Hugo – 9ha Grid
text/plain icon9hcover.txt
 06/06/1990 - 11/05/1993
40
Regeneration after Hurricane Hugo woody species > 1m tall (9ha grid, El Verde) Percent cover below 3m (9 ha grid, El Verde)

Research Sites:

El Verde Research Area 9-ha plot Grid transect

Methods:

Visual estimate of cover of the various parameters 0 = 0% + = ó 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.

Abstract

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

Related Project:

Owner:

Nicholas Brokaw

Contact(s):

Jean Lodge
Lawrence R. Walker

Associated:

Nicholas Brokaw

Researcher's Keywords:

Luquillo
Puerto Rico
Greater Antilles
Caribbean
Sites
Sites Projects Programs

LTER Vocab Keywords:

recovery
processes
hurricane damage
disturbance properties
measurements
forests
forest ecosystems
terrestrial ecosystems
ecosystems

LTER Core Area(s):

primary production

Complete Metadata:

  • Regeneration after Hurricane Hugo woody species > 1m tall (9ha grid, El Verde) Percent cover below 3m (9 ha grid, El Verde)

    The basic information about a dataset

    Basic Information

    Program: 
    Luquillo LTER
    Luquillo Investigator Research
    Numeric Dataset ID: 
    40
    Data Set Identifier: 
    Regeneration after Hurricane Hugo woody species > 1m tall (9ha grid, El Verde) Percent cover below 3m (9 ha grid, El Verde)
    Duration: 
    Completed
    Abstract: 

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

    Short name: 
    LUQMetadata40
    Project Title: 
    Core Area: 
    primary production
    Researchers´ Keywords: 
    Luquillo
    Puerto Rico
    Greater Antilles
    Caribbean
    Sites
    Sites Projects Programs
    LTER Keyword Assignment: 
    recovery
    processes
    hurricane damage
    disturbance properties
    measurements
    forests
    forest ecosystems
    terrestrial ecosystems
    ecosystems
    2006 Proposal Classification: 
    Plant community tree regeneration plant phenology
    Table 4 Long-Term Classification: 
    plants
    landslide revegetation
    Data File Structure Reference: 
    Wood fall from Hurricane Hugo – 9ha Grid
    Station Acronym: 
    LUQ
    Data File Structure Referrer: 

    Personnel

    Owner: 
    Nicholas Brokaw
    Contact: 
    Jean Lodge
    Lawrence R. Walker
    Associated Person: 
    Nicholas Brokaw
    Data Manager: 
    Eda Melendez-Colom

    Georefs, Dates

    Publication Date: 
    04/07/2011
    Site: 
    El Verde Research Area 9-ha plot Grid transect
    Collected: 
    06/06/1990 - 11/05/1993

    Methods

    Methods: 

    Visual estimate of cover of the various parameters 0 = 0% + = ó 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.

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