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Taxonomic Confusion Permits the Unchecked Invasion of Vernal Pools in California by Low Mannagrass (Glyceria declinata)

Published online by Cambridge University Press:  20 January 2017

John D. Gerlach ,
B. Shaun Bushman ,
John K. McKay  and
Harald Meimberg
John D. Gerlach*
Affiliation:
3841 Bannister Road, Fair Oaks, CA 95628
B. Shaun Bushman
Affiliation:
USDA–ARS Forage and Range Research Lab, 695 N 1100 E, Logan, UT 84322
John K. McKay
Affiliation:
Bioagricultural Sciences and Pest Management, Colorado State University, Plant Sciences Bldg., University Ave. 307, Fort Collins, CO 80523
Harald Meimberg
Affiliation:
CIBIO, University of Porto, Campus Agrario de Vairao, 4485–661 Vairao, Portugal
*
Corresponding author's E-mail: [email protected]
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Abstract

Chloroplast DNA sequences and recently established morphological characters were used to confirm the widespread invasion of California's vernal pools by European low mannagrass. Morphological similarities between low mannagrass and western mannagrass have led to different taxonomic treatments, depending on the geographical extent of a particular flora. When California's flora was last revised, the two species were combined as western mannagrass, which was then considered to be a native species. Unfortunately, the revised flora was published just as low mannagrass began to rapidly expand its range within the state and, because it was considered to be a native species in the new flora, no actions were initiated to limit the invasion. Our data show that low mannagrass was present at all localities in the Central Valley of California that were investigated, indicating a widespread and undetected invasion. The invasion has led to a degradation of the vernal pool ecosystems, which are the habitat of many federal and state protected endangered and threatened species.

Keywords

Low mannagrass, Glyceria declinata Bréb.western mannagrass Glyceria occidentalis (Piper) J. C. NelsonGlyceriachloroplast DNAcryptic invaderinvasiveness risk assessmentcontrol and containment actionsvernal pools
Type
Invasion Alert
Information
Invasive Plant Science and Management , Volume 2 , Issue 1 , January 2009 , pp. 92 - 97
Copyright
Copyright © Weed Science Society of America 

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References

Literature Cited

Barkworth, M. E., Capels, K. M., Long, S., Anderton, L. K., and Piep, M. B., editors. 2007. Magnoliophyta Commelinidae (in part: Poaceae, part 1). Flora of North America North of Mexico. Vol. 24. New York Oxford University Press. 911.Google Scholar
CalEPPC 1999. The CalEPPC List: Exotic Pest Plants of Greatest Ecological Concern in California. October, 1999. Berkely, CA California Invasive Plant Council. 8.Google Scholar
Calflora 2000. Information on California Plants for Education, Research and Conservation. Berkeley, California The Calflora Database. http://www.calflora.org/. Accessed March 1, 2008.Google Scholar
CH2MHill 1998. Final Training Manual to Evaluate Habitat Quality of Vernal Pool Ecosystem Sites in Santa Rosa Plain. Prepared for U.S. Army Corps of Engineers, San Francisco District, USA. December, 1998. San Francisco, CA CH2MHill. 75.Google Scholar
Gallego-Fernández, J. B., García-Mora, M. R., and García-Novo, F. 1999. Small wetlands lost: a biological conservation hazard in Mediterranean landscapes. Environ. Conserv 26:190–199.CrossRefGoogle Scholar
Hickman, J. C., editor. 1993. The Jepson Manual: Higher Plants of California. Berkeley, CA University of California Press. 1424.Google Scholar
Hubbard, C. E. 1942. Annual meeting in the University Department of Botany, Oxford. J. Ecol 30:227–233.Google Scholar
Molina, J. A. 1996. Sobre la vegetación del los humedales de la Peninsula Ibérica (1. Phragmiti-Magnocaricetea). Lazaroa 16:27–88.Google Scholar
Munz, P. A. and Keck, D. D. 1968. A California Flora and Supplement. Berkeley, CA University of California Press. 1905.Google Scholar
Pacific Mutual Consultants 2005. Yuba Highlands Specific Plan Draft Environmental Impact Report Sch No. 2001032070. Prepared for Yuba County, California, USA. January, 2005. Chico, CA Pacific Mutual Consultants. 616.Google Scholar
Rivas-Martínez, S., Díaz, T. E., Fernández-González, F., Izco, J., Loidi, J., Lousã, M., and Penas, A. 2002. Vascular plant communities of Spain and Portugal (12.2.7). Itinera Geobotanica 15:5–922.Google Scholar
Rogers, D. C. 1998. Aquatic macroinvertebrate occurrences and population trends in constructed and natural vernal pools in Folsom, California. Pages 224–235. in Witham, C., Bauder, E. T., Belk, D., Ferren, W. R. Jr., and Ornduff, R., editors. Conference Proceedings: Ecology, Conservation, and Management of Vernal Pool Ecosystems. June 19–21, 1996, Sacramento, CA. Sacramento, CA CNPS.Google Scholar
Swofford, D. L. 2002. PAUP*: Phylogenetic Analysis using Parsimony (* and Other Methods). Version 4.0b10. Sunderland, MA Sinauer Associates.Google Scholar
Vollmar, J. E. 2002. Wildlife and Rare Plant Ecology of Eastern Merced County's Vernal Pool Grasslands. Berkeley, CA Vollmar Consulting. 444.Google Scholar
Whipple, I. A., Barkworth, M. E., and Bushman, B. S. 2007. Molecular insights into the taxonomy of Glyceria (Poaceae: Meliceae) in North America. Am. J. Bot 94:551–557.Google Scholar