CRoss-site Analysis of Functional Traits for Basic Ecology and Ecosystem Restoration
One of my long term research goals is to develop an open access database of plant functional traits for the continental United States based on vegetation data from the LTER and CTFS networks.
This initiative is ongoing and goes by the acronym
CRAFT BEER
Trait Data
Alpine herbaceous plant traits
CO, USA
Data on plant height, leaf size, specific leaf area, stomatal conductance and chlorophyll content for 113 species of herbaceous plants. Seed mass and leaf C:N ratios are present for some, but not all species. Please cite Spasojevic and Suding 2012 Journal of Ecology if using this data. Also found on the TRY plant trait database http://www.try-db.org
Cross LTER plant leaf traits
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Data on leaf area, specific leaf area and leaf C:N:P from the species that make up the top 80% of abundance at Cedar Creek, Jasper Ridge, Sevietta, Short-Grass Steppe, Konza, Georgia Coastal Ecosystem, Kellog Biological Station, Carpenteria Salt Marsh.
[CURRENTLY LACK METADATA]
Dispersal syndromes on serpentine and non-serpentine soils
CA and OR, USA
Dispersal syndrome data (Ballistic, Unassisted, Wind, Tumbling, Water, Adhesize, Animal, Bird, Mammal, Ant) on 479 species found on Serpentine adn adjacent non-serpentine plant communites in California and Oregon. The data were compiled from the KEW seed information database and from the literature
Douglas fir-western hemlock forest plant traits
WA, USA
Data on leaf size, specific leaf area, leaf water content, wood density and bark thickness on 22 species . Data were collected within the Wind River forest dynamics plot.
Ozark oak-hickory forest plant traits ​
MO, USA
Data on leaf size, specific leaf area, leaf water content, leaf toughness and leaf chlorophyll content on 43 species for both saplings and adults. Data were collected within the Tyson Research Center forest dynamics plot. Please cite Spasojevic, M.J. and Myers, J.A. 2015. Data from: When does intraspecific trait variation contribute to functional beta-diversity? Journal of Ecology doi:10.5061/dryad.rr4pm
Poplar-elm-ash-sycamore forest plant traits
MD, USA
Data on leaf size, specific leaf area, leaf water content, wood density and bark thickness on 57 species . Data were collected within the Smithsonian Environmental Research Center forest dynamics plot.
[DATA COMING SOON]
R Script
Functional alpha diveristy with null modeling
The script used to analyze data in Spasojevic and Suding 2012 Journal of ecology. It uses the FD package to calculate multiple metrics of FD and uses the vegan package to ask if functional diversity is less than, or greater than, expected by chance.