Proceedings of the Third International Conference on Invasive ...

<strong>Proceedings</strong> <strong>of</strong> <strong>the</strong> <strong>Third</strong> <strong>International</strong> <strong>Conference</strong> on Invasive SpartinaChapter 3: Ecosystem Effects <strong>of</strong> Invasive Spartinaoverall reproductive success is reduced. It is also not yetknown whe<strong>the</strong>r marsh wrens are excluding song sparrowsfrom <strong>the</strong> Spartina habitat or if song sparrows are selectingagainst those areas for o<strong>the</strong>r reasons (e.g., nesting habitat orfood resources are limited).ACKNOWLEDGMENTSWe thank Letitia Grenier, Jules Evens, Joy Albertson,Katy Zaremba and Hildie Spautz for assistance withinitiating this research. We also thank Lisa Eigner, BeckyDucore and April Robinson for assistance in <strong>the</strong> field. TheCalifornia Coastal Conservancy’s Invasive Spartina Projectand Pablo Rosso graciously provided <strong>the</strong> aerial photo GISfiles. We thank U.S. Fish and Wildlife Service, CADepartment <strong>of</strong> Fish and Game, East Bay Regional ParkDistrict and <strong>the</strong> City <strong>of</strong> San Leandro for research permitsand access to marshes. Funding was provided by a David H.Smith Conservation Research Fellowship from The NatureConservancy, <strong>the</strong> National Science FoundationBiocomplexity grant DEB 0083583, and <strong>the</strong> San FranciscoEstuary Institute.REFERENCESAyres, D.R., D.L. Smith, K. Zaremba, S. Klohr, and D.R. Strong.2004. Spread <strong>of</strong> exotic cordgrasses and hybrids (Spartina sp.) in<strong>the</strong> tidal marshes <strong>of</strong> San Francisco Bay, CA, USA. Biological Invasions6: 221-231.Ayres, D.R., D. Garcia-Rossi, H.G. Davis, and D.R. Strong. 1999.Extent and degree <strong>of</strong> hybridization between exotic (Spartina alterniflora)and native (S. foliosa) cordgrass (Poaceae) in California,USA determined by random amplified polymorphic DNA(RAPDs). Molecular Ecology 8: 1179-1186.Callaway, J.C., and M.N. Josselyn. 1992. The introduction andspread <strong>of</strong> smooth cordgrass (Spartina alterniflora) in South San-Francisco Bay. Estuaries 15: 218-226.Nordby, J.C., A.C. Cohen and S.R. Beissinger. 2009. Effects <strong>of</strong> ahabitat-altering invader on nesting sparrows: An ecological trap?Biological Invasions 11:565-575.Picman, J. 1977. Destruction <strong>of</strong> eggs by <strong>the</strong> long-billed marshwren. Canadian Journal <strong>of</strong> Zoology 55: 1914-1920.Zaremba, K., M. McGowan, and D.R. Ayres. 2010. Spread <strong>of</strong> invasiveSpartina in <strong>the</strong> San Francisco estuary. In: Ayres, D.R.,D.W. Kerr, S.D. Ericson and P.R. Ol<strong>of</strong>son, eds. <strong>Proceedings</strong> <strong>of</strong><strong>the</strong> <strong>Third</strong> <strong>International</strong> <strong>Conference</strong> on Invasive Spartina, 2004Nov 8-10, San Francisco, CA, USA. San Francisco Estuary InvasiveSpartina Project <strong>of</strong> <strong>the</strong> California State Coastal Conservancy:Oakland, CA. (this volume).- 199 -