Spruce Leaf, Tree Traits, and Respiration at Range Extremes, AK and NY, USA, 2018
This dataset provides in situ measurements of needle-level gas-exchange and leaf traits from Picea glauca (white spruce) from a field site located in the northern latitudinal forest-tundra ecotone (FTE) near the Dalton Highway in northern Alaska, and from one study site located in Black Rock Forest, New York, USA. Measurements were collected with an open flow portable photosynthesis system (Li6400XT) and custom-built temperature-controlled cuvette. Respiration as a function of leaf temperature was measured continuously as the needle temperature was ramped from approximately 5 to 65 degrees C, at a constant rate of 1 degree C per minute. Additional data include tree diameter at breast height (dbh), leaf area, photosynthetic rate, intercellular C02, conductance to H20, tree height, and data from raw temperature curves. Results are reported on both a leaf area and leaf mass basis. The data are for the period 2018-06-06 to 2018-06-23 and are provided in comma-separated (CSV) format.
Complete Metadata
| @type | dcat:Dataset |
|---|---|
| accessLevel | public |
| bureauCode |
[
"026:00"
]
|
| contactPoint |
{
"fn": "Earthdata Forum",
"@type": "vcard:Contact",
"hasEmail": "mailto:earthdata-support@nasa.gov"
}
|
| description | This dataset provides in situ measurements of needle-level gas-exchange and leaf traits from Picea glauca (white spruce) from a field site located in the northern latitudinal forest-tundra ecotone (FTE) near the Dalton Highway in northern Alaska, and from one study site located in Black Rock Forest, New York, USA. Measurements were collected with an open flow portable photosynthesis system (Li6400XT) and custom-built temperature-controlled cuvette. Respiration as a function of leaf temperature was measured continuously as the needle temperature was ramped from approximately 5 to 65 degrees C, at a constant rate of 1 degree C per minute. Additional data include tree diameter at breast height (dbh), leaf area, photosynthetic rate, intercellular C02, conductance to H20, tree height, and data from raw temperature curves. Results are reported on both a leaf area and leaf mass basis. The data are for the period 2018-06-06 to 2018-06-23 and are provided in comma-separated (CSV) format. |
| distribution |
[
{
"@type": "dcat:Distribution",
"title": "Data Information (Unknown Format)",
"format": "BIN",
"mediaType": "application/octet-stream",
"downloadURL": "https://above.nasa.gov/"
},
{
"@type": "dcat:Distribution",
"title": "Data Information (JPEG)",
"format": "JPEG",
"mediaType": "image/jpeg",
"downloadURL": "https://daac.ornl.gov/ABOVE/guides/ArcticTreeLine_Spruce_CO2_WV_Fig1.jpg"
},
{
"@type": "dcat:Distribution",
"title": "Data Information (ZIP)",
"format": "ZIP",
"mediaType": "application/zip",
"downloadURL": "https://data.ornldaac.earthdata.nasa.gov/protected/bundle/ArcticTreeLine_Spruce_CO2_WV_1948.zip"
},
{
"@type": "dcat:Distribution",
"title": "Data Information (PDF)",
"format": "PDF",
"mediaType": "application/pdf",
"downloadURL": "https://data.ornldaac.earthdata.nasa.gov/public/above/ArcticTreeLine_Spruce_CO2_WV/comp/ArcticTreeLine_Spruce_CO2_WV.pdf"
},
{
"@type": "dcat:Distribution",
"title": "Data Information (HTML)",
"format": "HTML",
"mediaType": "text/html",
"downloadURL": "https://doi.org/10.3334/ORNLDAAC/1948"
},
{
"@type": "dcat:Distribution",
"title": "Data Information (Unknown Format)",
"format": "BIN",
"mediaType": "application/octet-stream",
"downloadURL": "https://search.earthdata.nasa.gov/search?q=ArcticTreeLine_Spruce_CO2_WV_1948&ac=true"
}
]
|
| identifier | 10.3334/ORNLDAAC/1948 |
| keyword |
[
"earth-science-ecological-dynamics-biosphere-ecosystem-functions-photosynthesis",
"earth-science-ecological-dynamics-biosphere-ecosystem-functions-respiration-rate",
"earth-science-ecosystems-biosphere-terrestrial-ecosystems-alpine-tundra",
"earth-science-vegetation-biosphere-leaf-characteristics",
"earth-science-vegetation-biosphere-plant-characteristics"
]
|
| landingPage | https://search.earthdata.nasa.gov/search?q=ArcticTreeLine_Spruce_CO2_WV_1948&ac=true |
| modified | 2026-02-17 |
| programCode |
[
"026:000"
]
|
| publisher |
{
"name": "ORNL_DAAC",
"@type": "org:Organization"
}
|
| spatial |
"[[{"WestBoundingCoordinate":-149.955,"NorthBoundingCoordinate":67.8889,"EastBoundingCoordinate":-74.0246,"SouthBoundingCoordinate":41.4011}],"CARTESIAN"]"
|
| temporal | 2018-06-06/2018-06-06 |
| theme |
[
"Earth Science"
]
|
| title | Spruce Leaf, Tree Traits, and Respiration at Range Extremes, AK and NY, USA, 2018 |
