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GreenDown Protocol

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Phenology: Green-Down Protocol. Why do GLOBE scientists research ... Step 1: Select 'Define a Green-Up/Green-Down Study Site' from the Phenology data entry menu ... – PowerPoint PPT presentation

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Title: GreenDown Protocol


1
Green-Down Protocol
2
Goals for the Training Session
  • Provide an inquiry context for the data
    collection and science content
  • Provide accurate science content
  • Review procedures for data collection
  • Review data entry and analysis
  • Discuss classroom implementation ideas
  • Collect feedback from participants

3
Inquiry Context
  • How long does green-down take for a given
    species?
  • How does the green-down differ between different
    species?
  • How does green-down relate to air temperature?
  • Does green-down differ from year to year for the
    same tree/shrub?

4
Local Inquiry Example
5
Why do GLOBE scientists research green-down?
  • To calculate growing season length and monitor
    interannual changes in growing season duration
  • To determine how environmental conditions such as
    air and soil temperature, soil moisture, and day
    length affect plant growth
  • To monitor the nature and extent of climate
    change and its effects on plants and animals
  • To help interpret satellite observations of
    greenness

6
Science Content What is green-down?
Green-down marks the end of the growing season
for many plants. A color change is generally
associated with green-down of leaves. The color
will vary by species.
July 1987
November 1987
7
Instruments Green-Down
  • GPS Receiver
  • Local Tree/Shrub Identification Guide
  • GLOBE Plant Color Guide
  • Compass
  • Meter stick or tape measure (for grass study
    site)
  • Camera
  • Flagging Tape Marker

8
The Measurements
  • Green-Down Study Site Definition
  • GPS location
  • Tree/shrub species or grass genus
  • Study Site pictures
  • Green-Down Protocol
  • For tree or shrub date, leaf condition and leaf
    color on four leaves of the same branch
  • For grass date, shoot condition and shoot color
    on the four tallest shoots

9
Collecting Data Field\Lab Guides Data Sheets
  • Field\Lab Guides
  • Tree and Shrub Green-Up and Green-Down Site
    Selection Field Guide or Grass Green-Up and
    Green-Down Site Selection Field Guide
  • GPS Protocol Field Guide
  • Tree and Shrub Green-Down Field Guide or Grass
    Green-Down Field Guide
  • Data Sheets
  • Green-Up and Green-Down Site Definition Sheet
  • GPS Investigation Data Sheet
  • Tree, Shrub and Grass Green-Down Data Sheet

10
Collecting Data Green-Up and Green-Down Study
Site
  • Site Selection
  • At least 2 weeks before budburst
  • Convenient location
  • Native trees/shrubs or grasses that are not
    watered or fertilized are preferred
  • Tree and Shrub or Grass Selection
  • Identify dominant tree and shrub species or grass
    genus
  • For Tree and Shrub
  • Select one dominant, native, deciduous tree/shrub
  • Select and flag a healthy, good-sized branch on
    the equator-facing side
  • For Grass
  • Select a one-meter square area dominated by grass
    plants

11
Collecting Data Protocol
  • First Time
  • Photograph your site
  • For Tree or Shrub
  • Locate and mark leaf at end of selected branch
  • Locate and mark three other closest leaves
  • For Grass
  • Locate the four longest green grass shoots.
  • Mark the base of each grass shoot.
  • Every Visit
  • Determine dominant color for each leaf or grass
    shoot
  • Or report either
  • Snow Covered or Fallen

12
Enter Data on the GLOBE Web Site Green-Up and
Green-Down Study Site Definition
Step 1 Select Define a Green-Up/Green-Down
Study Site from the Phenology data entry
menu Step 2 Enter the Study Site
information Step 3 Click Send Data button Step
4 Confirm data entries on verification page
13
Enter Data on the GLOBE Web SiteGreen-Down
Protocol
Step 1 Confirm that a Green-Down Study Site has
been defined Step 2 Select Green-Down from the
Phenology data entry menu Step 3 Select your
Study Site, enter the date and growing season
cycle Step 4 Enter data for the status and color
of the leaves from each line of the data sheet,
one at a time Step 5 Confirm data entries on
verification page
14
Looking at the Data
Leaf 1
Comparison of Green-Down Data of Two Species
Worthen C of E Primary School, Shropshire,
United Kingdom
Leaf 2
How does the green-down differ between species?
Leaf 3
Leaf 4
15
Classroom Implementation
  • Inquiry
  • Curriculum/Standards Alignment
  • Assessment
  • Classroom Management


16
Getting Started
  • The GLOBE Web site has information
  • http//www.globe.gov
  • GLOBE Help Desk or your Country Coordinator can
    support you as you get started.
  • Get your students involved doing real science!
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