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Green-Down Protocol

Green-Down Protocol. 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

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Green-Down Protocol

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  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 SiteGreen-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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