Ecology of two geographically restricted Astragalus species (Fabaceae), A. bibullatus and A. tennesseensis, of the eastern United States
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Astragalus bibullatus is endemic to limestone glades in the Central Basin of Tennessee, and except for one population in Illinois,A. tennesseensis is endemic to limestone glades in the Central Basin and in the Moulton Valley of Alabama. However,A. tennesseensis has been extirpated from four counties in Illinois, from its only known site in Indiana, from one county in Tennessee, and from one county in Alabama.Astragalus bibullatus is closely related to the geographically wide-spread Great Plains taxonA. crassicarpus var.crassicarpus (sectionSarcocarpi), whereasA tennesseensis is the only taxon in sectionTennesseensis. Both species are shallow-rooted, hemicryptophyte perennials without vegetative reproduction, have no effective means of seed dispersal, form long-lived seed banks, have similar life cycle phenologies, are intolerant of heavy shade, and have moderate amounts of genetic diversity. Much. additional information is available on the autecology ofA. tennesseensis. Its primary habitat is the transition zone between open glades and glade woods, where physical environmental factors are intermediate between those of the adjacent zones. Seedling-juvenile survival is low. Plants flower first in their second to fifth year and only a few times before dying, are self-incompatible, respond to drought by shedding leaves and by accumulating large amounts of proline, and compete poorly. Populations exhibit high fluctuations in number of individuals and have high turnover rates. A greenhouse study ofA bibullatus andA crassicarpus var.crassicarpus did not identify any difference in responses of these species to light or soil moisture that could account for the great differences in geographic ranges. Thus, historical factors were also considered to explain the narrow endemism ofA. bibullatus. Finally, we present previously unpublished data on the effect of light level and of competition with the cedar glade dominantSporobolus vaginiflorus in several watering regimes on growth ofA. tennesseensis. The role of these factors in restriction of this species to its transition zone microhabitat is discussed.
- Barneby, R. C.. 1964. Atlas of North AmericanAstragalus. Memoris of The New York Botanical Garden 13: 1–1188.
- — &E. L. Bridges. 1987. A new species ofAstragalus (Fabaceae) from. Tennessee’s Central Basin. Brittonia 39: 358–363. CrossRef
- Baskauf, C. J.. 2001. Examining rarity through comparisons with widespread congeners: a genetic and ecophysiological example from limestone glade entemics. Castanea 66: 126–133.
- — &S. Snapp. 1998. Population genetics of the cedar-glade endemic.Astragalus bibullatus (Fabaceae) using isozymes. Annals of the Missouri. Botanical Garden 85: 90–96. CrossRef
- Baskin, C. C. &J. M. Baskin. 1974. Responses ofAstragalus tennesseensis to drought: changes in tree amino acids and amides during water stress and possible ecological significance. Oecologia 17: 11–16. CrossRef
- —— &E. Quarterman. 1972. Observations on the ecology ofAstragalus tennesseensis. American Midland Naturalist 88: 167–182. CrossRef
- —— & —. 1981. Effect of drought stress on transpiration rates and leaf areas ofAstragalus tennesseensis, a near-endemic to cedar glades. Journal of the Tennessee Academy of Science 56: 27–31.
- — &E. Quarterman. 1969. Germination requirements ofAstragalus tennesseensis. Bulletin of the Torrey Botanical Club 91: 315–321. CrossRef
- Baskin, J. M. &C. C. Baskin. 1981. A contribution to the ecological life cycle ofAstragalus tennesseensis. Journal of the Tennessee Academy of Science 56: 4–6.
- — & —. 1989. Cedar glade endemics, and a review of their autecology. Journal of the Tennessee Academy of Science 64: 63–74.
- — & —. 1999. Cedar glades of the southeastern United States. Pages 206–219.In: R. C. Anderson, J. S. Fralish, and J. M. Baskin, editors. Savannas, barrens, and rock outcrop plant communities of North America. Cambridge University Press, Cambridge.
- — & —. 2003. The vascular flora of cedar glades of the southeastern United States and its phytogeographical relationships. Journal of the Torrey Botanical Society 130: 101–118. CrossRef
- —. 1997. The comparative autecology of endemic globally-rare and geographically-widespread common plant species: three case studies. Southwestern Naturalist 42: 384–399.
- Bowles, M. L., K. R. Bachtell, M. M. DeMauro, L. G. Sykora &C. R. Bautista. 1988. Propagation techniques used in establishing a greenhouse population ofAstragalus tennesseensis Gray. Natural Areas Journal 8: 121–122.
- —. 1993. Propagation of rare plants from historic seed collections: implications for species restoration and herbarium management. Restoration Ecology 1: 101–106. CrossRef
- Caudle, C. F.. 1968. Studies on the life history and hydro-economy ofAstragalus tennesseensis (Leguminosae). Ph.D. thesis. Vanderbilt University, Nashville, Tennessee.
- Delcourt, P. A. &H. R. Delcourt. 1981. Vegetation maps for eastern North America: 40,000 yr BP to the present. Pages 123–165.In: R. C. Romans, editor. Geobotany II. Plenum Press, New York.
- DeSelm, H. R.. 1959. A new map of the central Basin of Tennessee. Journal of the Tennessee Academy of Science 34: 66–72, 96.
- Edwards, A. L., B. Wiltshire &D. L. Nickrent. 2004. Genetic diversity inAstragalus tennesseensis and the federal endangeredDalea foliosa (Fabaceae). Journal of the Torrey Botanical Society 131: 279–291. CrossRef
- Homoya, M. A., D. B. Abrell, J. R. Aldrich &T. W. Post. 1984. The natural regions of Indiana. Proceedings of the Indiana Academy of Science 94: 245–268+ colored map of the natural regions of Indiana by M. A. Homoya.
- Isely, D.. 1998. Native and naturalized Leguminosae (Fabaceae) of the United States. (exclusive of Alaska and Hawaii). Monte L. Bean Life Sciences Museum. Brigham Young University, Provo, Utah.
- McClain, W. E. &J. E. Ebinger. 2003. The genusAstragalus in Illinois. Transactions of the Illinois State Academy of Science 97: 11–18.
- McCue, K., E. Belt &M. Yarlina. 2001. Propagation protocol forAstragalus bibullatus. Native Plants Journal 2: 131–132.
- —. 2002. Battlefield harbors a rare Tennessee plant. Endangered Species Bull. (July/August) 27(3): 18–19.
- McFall, D. W.. 1984. Vascular plants of the Manito gravel prairie. Transactions of the Illinois State Academy of Science 77: 9–14.
- McGregor, R. L.. 1968. The taxonomy of the genusEchinacea, Kansas University Science Bulletin 40: 113–142.
- Morris, A. B., R. S. Baucom &M. B. Cruzan. 2002. Stratified analysis of the soil seed bank in the cedar glade endemicAstragalus bibullatus: evidence for historical changes in genetic structure. American Journal of Botany 89: 29–36.
- Post, T. W., J. A. Bacone &J. R. Aldrich. 1985. Gravel hill prairies of Indiana. Proceedings of the Indiana Academy of Science 94: 457–463.
- Quarterman, E.. 1950. Major plant communities of Tennessee cedar glades. Ecology. 31: 334–354. CrossRef
- Schwegman, J. E.. 1973. Comprehensive plan for the Illinois nature preserve system. Part 2. The natural divisions of Illinois. Illinois Nature Preserves Commission. Rockford, Illinois. 32 pp + colored map of the natural divisions of Illinois.
- —. 1998. Some aspects of the life history and population dynamics ofAstragalus tennesseensis A. Gray in Illinois. Castanea 63: 63–67.
- Stuart, W.. 1901. Some additions to the flora of Indiana. Proceedings of the Indiana Academy of Science 1901: 282–283.
- Webb, D. H., J. M. Baskin &C. C. Baskin. 1992. Distribution and status ofAstragalus tennesseensis (Fabaceae) in Alabama. Sida 15: 97–103.
- Ecology of two geographically restricted Astragalus species (Fabaceae), A. bibullatus and A. tennesseensis, of the eastern United States
Volume 57, Issue 4 , pp 345-353
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- Astragalus bibullatus
- A tennesseensis
- cedar glade endemics
- plant response to competition
- and shading