Difference between revisions of "Crotalaria rotundifolia"
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It is a nitrogen-fixing legume.<ref>Runion, G. B., M. A. Davis, et al. (2006). "Effects of elevated atmospheric carbon dioxide on biomass and carbon accumulation in a model regenerating longleaf pine community." Journal of Environmental Quality 35: 1478-1486.</ref> In a study by Davis, it was discovered that C. rotundifolia had higher mortality and less biomass in high carbon dioxide plots, suggesting that not all species will perform well as global carbon dioxide levels rise.<ref name="Davis et al 2002"/> | It is a nitrogen-fixing legume.<ref>Runion, G. B., M. A. Davis, et al. (2006). "Effects of elevated atmospheric carbon dioxide on biomass and carbon accumulation in a model regenerating longleaf pine community." Journal of Environmental Quality 35: 1478-1486.</ref> In a study by Davis, it was discovered that C. rotundifolia had higher mortality and less biomass in high carbon dioxide plots, suggesting that not all species will perform well as global carbon dioxide levels rise.<ref name="Davis et al 2002"/> | ||
===Habitat=== <!--Natural communities, human disturbed habitats, topography, hydrology, soils, light, fire regime requirements for removal of competition, etc.--> | ===Habitat=== <!--Natural communities, human disturbed habitats, topography, hydrology, soils, light, fire regime requirements for removal of competition, etc.--> | ||
| − | + | This species is a common associate in longleaf pine savannas.<ref name="Davis et al 2002">Davis, M. A., S. G. Pritchard, et al. (2002). "Elevated atmospheric CO2 affects structure of a model regenerating longleaf pine community." Journal of Ecology 90: 130-140.</ref> It can also be found in sandhill communities,<ref name="Stamp and Lucas 1990"/> oak-palmetto scrub, evergreen scrub oak sand ridges, slash pine flatwoods, sand dunes, backdunes, dune swales, and bordering cypress swamps and depression marshes (FSU Herbarium). This species also occurs in disturbed areas including roadsides, clearings in turkey oak barrens, and clear-cut flatwoods (FSU Herbarium). | |
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| + | ''C. rotundifolia'' prefers higher light levels associated with open pinelands, and sandy soil types, both moist and dry, such as coarse sand, drying sand, peaty sand, and sandy clay (FSU Herbarium). | ||
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===Phenology=== <!--Timing off flowering, fruiting, seed dispersal, and environmental triggers. Cite PanFlora website if appropriate: http://www.gilnelson.com/PanFlora/ --> | ===Phenology=== <!--Timing off flowering, fruiting, seed dispersal, and environmental triggers. Cite PanFlora website if appropriate: http://www.gilnelson.com/PanFlora/ --> | ||
It has a broad, bimodal flowering phenology with peaks in early April and late fall.<ref name="Hiers et al 2000">Hiers, J. K., R. Wyatt, et al. (2000). "The effects of fire regime on legume reproduction in longleaf pine savannas: is a season selective?" Oecologia 125: 521-530.</ref> | It has a broad, bimodal flowering phenology with peaks in early April and late fall.<ref name="Hiers et al 2000">Hiers, J. K., R. Wyatt, et al. (2000). "The effects of fire regime on legume reproduction in longleaf pine savannas: is a season selective?" Oecologia 125: 521-530.</ref> | ||
Revision as of 14:32, 9 July 2015
| Crotalaria rotundifolia | |
|---|---|
| |
| Photo was taken by Gil Nelson | |
| Scientific classification | |
| Kingdom: | Plantae |
| Division: | Magnoliophyta - Flowering plants |
| Class: | Magnoliopsida – Dicotyledons |
| Order: | Fabales |
| Family: | Fabaceae ⁄ Leguminosae |
| Genus: | Crotalaria |
| Species: | C. rotundifolia |
| Binomial name | |
| Crotalaria rotundifolia Walter ex J.F. Gmel. | |
| |
| Natural range of Crotalaria rotundifolia from USDA NRCS Plants Database. | |
Contents
Description
Common Name: rabbitbells
Perennial herbaceous legume.[1]
Distribution
Ecology
It is a nitrogen-fixing legume.[2] In a study by Davis, it was discovered that C. rotundifolia had higher mortality and less biomass in high carbon dioxide plots, suggesting that not all species will perform well as global carbon dioxide levels rise.[1]
Habitat
This species is a common associate in longleaf pine savannas.[1] It can also be found in sandhill communities,[3] oak-palmetto scrub, evergreen scrub oak sand ridges, slash pine flatwoods, sand dunes, backdunes, dune swales, and bordering cypress swamps and depression marshes (FSU Herbarium). This species also occurs in disturbed areas including roadsides, clearings in turkey oak barrens, and clear-cut flatwoods (FSU Herbarium).
C. rotundifolia prefers higher light levels associated with open pinelands, and sandy soil types, both moist and dry, such as coarse sand, drying sand, peaty sand, and sandy clay (FSU Herbarium).
Phenology
It has a broad, bimodal flowering phenology with peaks in early April and late fall.[4]
Flowering has been observed in March through December, while fruiting has been observed in April through November (FSU Herbarium).
Seed dispersal
Seeds are forcefully expelled after the fruit matures and dries, and ants act as the main dispersal agents. The ballistic dispersal distance was found to be around .94 meters.[3]
Seed bank and germination
Fire ecology
Robustness of reproduction is related to burn treatments and season of burn.[4]
Pollination
Mark Deyrup at Archbold Biological Station observed these Hymenoptera species on Crotalaria rotundifolia
Megachilidae: Megachile brevis pseudobrevis
Use by animals
Caterpillars are often found consuming C. rotundifolia. Ants, especially Pogonomyrmex badius, help disperse the seeds long distances.[3]
Diseases and parasites
Conservation and Management
Cultivation and restoration
Photo Gallery
References and notes
Florida State University Robert K. Godfrey Herbarium database. URL: http://herbarium.bio.fsu.edu. Last accessed: June 2014.
Collectors: O. Lakela, Loran C. Anderson, Bian Tan, Brenda Herring, Don Herring, Gwynn W. Ramsey, H. Larry Stripling, R.K. Godfrey, John Morrill, R. Kral, C. Jackson, D. B. Ward, A. F. Clewell, J. Beckner, D. Burch, L B Trott, William Reese, Paul Redfearn, H. E. Grelen, R. C. Phillips, L. J. Brass, Ann F. Johnson, J. Sincock, Grady W. Reinert, Mabel Kral, Elmer C. Prichard, Sidney McDaniel, Roomie Wilson, K. Craddock Burks, W. W. Baker, A. Mellon, Richard S. Mitchell, Steve L. Orzell, Edwin L. Bridges, Patricia Elliot, A. H. Curtiss, Kurt E. Blum, Dave Breil, H. A. Lang, R. F. Doren, R. A. Norris, Walter Kittredge, R. Komarek, Chris Cooksey, Kevin Oakes, M. Davis, Cecil R Slaughter, John B. Nelson, Cynthia Aulbach-Smith, Kelley, Batson, S. M. Tracy, D. P. Bain, R. B. Carr, R. L. Wilbur, J A Duke, H. L. Blomquist, William B. Fox, A. E. Radford, H. R. Reed, Barbara Lund, Grelen, and Wilbur H Duncan.
States and Counties: Florida: Bay, Brevard, Calhoun, Citrus, Clay, Collier, Columbia, Dixie, Duval, Flagler, Franklin, Gadsden, Hamilton, Hernando, Highlands, Indian River, Jackson, Jefferson, Lake, Lee, Leon, Levy, Liberty, Madison, Marion, Martin, Monroe, Nassau, Osceola, Orange, Polk, Putnam, Taylor, Santa Rosa, Sarasota, St John’s, Sumter, Suwannee, Volusia, and Wakulla. Georgia: Charlton, Echols, Grady, Lanier, and Thomas. South Carolina: Barnwell, Berkeley, Jasper, and Richland. Mississippi: George, Harrison, Lamar, and Pearl River. Texas: Brazos. North Carolina: Bladen, Carteret, and Wayne. Alabama: Baldwin and Mobile.
- ↑ 1.0 1.1 1.2 Davis, M. A., S. G. Pritchard, et al. (2002). "Elevated atmospheric CO2 affects structure of a model regenerating longleaf pine community." Journal of Ecology 90: 130-140.
- ↑ Runion, G. B., M. A. Davis, et al. (2006). "Effects of elevated atmospheric carbon dioxide on biomass and carbon accumulation in a model regenerating longleaf pine community." Journal of Environmental Quality 35: 1478-1486.
- ↑ 3.0 3.1 3.2 Stamp, N. E. and J. R. Lucas (1990). "Spatial patterns and dispersal distances of explosively dispersing plants in Florida sandhill vegetation." Journal of Ecology 78: 589-600.
- ↑ 4.0 4.1 Hiers, J. K., R. Wyatt, et al. (2000). "The effects of fire regime on legume reproduction in longleaf pine savannas: is a season selective?" Oecologia 125: 521-530.
