Dataset
Biodiversity II: Effects of Plant Biodiversity on Population and Ecosystem Processes - Experiment 120
Plant traits
Years Available: 2008
Principle Investigators
Tilman, David
Reich, Peter
Knops, Johannes
Wedin, David
Abstract
In the summers of 2007 and 2008, leaf traits were measured in the Cedar Creek biodiversity experiment [E120]. Three fully mature leaves were sampled from ten individuals of each species collected within the maintained experimental plots as well as from the unmaintained experimental plots. Each individual was identified from a randomly chosen plot to cover the range of diversity treatments. Fresh leaves were scanned on a flatbed scanner on the same day as collection with petioles and sheaths removed. Leaf area, perimeter and Feret's diameter were calculated from the scanned leaves using ImageJ software (Rasband 1997-2004). This allowed calculation of perimeter per area (P/A, cm/cm-2), which is empirically correlated with leaf hydraulic conductance across a wide range of taxa (Sack et al. 2003). Perimeter per leaf area x Feret's diameter is a unitless measure of leaf lobedness Cavender-Bares et al 2006 that influences the leaf radiation balance (Givnish 1976). After scanning, leaves were dried at 65oC for three days and weighed to calculate specific leaf area (cm2/g). Seed mass was determined by collecting seed heads for ten plants per species with fully mature seeds, air drying the seed heads, and then weighing together ten seeds (and dividing by ten) to calculate a mean seed mass per plant. For five species, seed mass was taken from online commercial databases, including the Native Seed Network, Wildflower Farm Inc., and Prairie Moon Nursury. Plant height was measured at maturity from the root collar to the apical meristem or to the top of the vegetative canopy for five to ten individuals per species. Some values were also taken from the USDA Plants Database.
View All Experiment and Dataset Methods
Environmental Data Initiative data package
EDI Package ID | DOI |
---|---|
ATTRIBUTES
Field | Name | Definition | Unit | Code |
---|---|---|---|---|
1 | Year | Year sampled | ||
2 | Species | Species Name | ||
3 | Area_of_leaf_blade_cm2 | Leaf laminar area (cm^2) | squareCentimeters | |
4 | P/A | permeter per area (cm-1) | waveNumber | |
5 | P_A*L | Perimeter per area times leaf laminar length (unitless) | dimensionless | |
6 | SLA_cm2/g | Specific leaf length (cm^2/g) | centimetersSquaredPerGram | |
7 | Seed_weight_(g) | Seed weight (g) | gram | |
8 | height_(m) | Average plant height at maturity (m) | meter |
SAMPLE DATASET
Year | Species | Area_of_leaf_blade_cm2 | P/A | P_A*L | SLA_cm2/g | Seed_weight_(g) | height_(m) |
---|---|---|---|---|---|---|---|
2008 | Achillea millefolium | 9.370033333 | 7.625862115 | 1.547935759 | 115.5779025 | 0.0000625 | 0.9144 |
2008 | Amorpha canescens | 9.630133333 | 10.9203095 | 0.492759565 | 90.78938792 | 0.0023726 | 1.2192 |
2008 | Agropyron repens | 3.123133333 | 8.194893967 | 1.445975819 | 154.9558481 | 0.00182 | 0.79248 |
2008 | Agropyron smithii | 1.313266667 | 16.90121587 | 0.622391588 | 69.97630644 | 0.003333333 | 0.9144 |
2008 | Andropogon gerardi | 8.104366667 | 7.070340957 | 3.158165697 | 100.6045416 | 0.000925 | 2.4384 |
2008 | Asclepias tuberosa | 6.673888889 | 2.752107537 | 2.995940701 | 160.9413706 | 0.00717 | 0.6096 |
2008 | Baptisia leucantha | 13.33196667 | 2.118223517 | 3.439099504 | 107.1027548 | 0.0177601 | 1.8288 |
2008 | Bouteloua curtipendula | 3.743133333 | 18.30451264 | 1.484697073 | 75.48090755 | 0.0022178 | 0.762 |
2008 | Bouteloua gracilis | 0.4065 | 40.53563231 | 0.172439461 | 74.82292757 | 0.0015857 | 0.48768 |
2008 | Crepis tectorum | 0.2778 | 19.83567222 | 0.127682976 | 178.0705616 | 0.000171533 | 1.00584 |
2008 | Elymus canadensis | 11.72182057 | 3.87614951 | 75.16128824 | 168.5106362 | 0.0047 | 0.9144 |
2008 | Koeleria cristata | 0.726533333 | 41.02087959 | 0.31820969 | 35.70485863 | 0.0002972 | 0.4572 |
Download dataset aafe120 Biodiversity II: Effects of Plant Biodiversity on Population and Ecosystem Processes : Plant traits | ||
---|---|---|
TEXT Format | HTML Format | EML Format* |
*Read more about EML
Report errors in data files here.