caa a22 4500 445857900 CHVBK 20180317145434.0 cr unu---uuuuu 170323e20111001xx s 000 0 eng 10.1007/s10592-011-0228-7 doi (NATIONALLICENCE)springer-10.1007/s10592-011-0228-7 The structure of population genetic diversity in Vallisneria americana in the Chesapeake Bay: implications for restoration [Elektronische Daten] [Michael Lloyd, Robert Burnett Jr., Katharina Engelhardt, Maile Neel] Submersed aquatic macrophyte beds provide important ecosystem services, yet their distribution and extent has declined worldwide in aquatic ecosystems. Effective restoration of these habitats will require, among other factors, reintroduction of genetically diverse source material that can withstand short- and long-term environmental fluctuations in environmental conditions. We examined patterns of genetic diversity in Vallisneria americana because it is a cosmopolitan freshwater submersed aquatic macrophyte and is commonly used for restoring freshwater habitats. We sampled 26 naturally occurring populations of V. americana in the Chesapeake Bay estuary and its tributaries and found that the majority of populations have high genotypic diversity and are not highly inbred. Fourteen of the populations had high allelic and genotypic diversity and could serve as source sites for restoration material. However, substantial geographic structuring of genetic diversity suggests that caution should be used in moving propagules to locations distant from their source. In particular, we suggest that propagules at least be limited within four primary geographic areas that correspond to freshwater tidal and non-tidal, oligohaline, and seasonally mesohaline areas of the Chesapeake Bay. Springer Science+Business Media B.V., 2011 Submersed aquatic vegetation nationallicence SAV nationallicence Genotypic diversity nationallicence Gene flow nationallicence Lloyd Michael Department of Plant Science and Landscape Architecture, University of Maryland-College Park, 2102 Plant Sciences Building, 20742-4452, College Park, MD, USA aut Burnett Jr. Robert Department of Plant Science and Landscape Architecture, University of Maryland-College Park, 2102 Plant Sciences Building, 20742-4452, College Park, MD, USA aut Engelhardt Katharina Appalachian Laboratory, University of Maryland Center for Environmental Science, 301 Braddock Road, 21532-2307, Frostburg, MD, USA aut Neel Maile Department of Plant Science and Landscape Architecture, University of Maryland-College Park, 2102 Plant Sciences Building, 20742-4452, College Park, MD, USA aut Conservation Genetics Springer Netherlands 12/5(2011-10-01), 1269-1285 1566-0621 12:5<1269 2011 12 10592 https://doi.org/10.1007/s10592-011-0228-7 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10592-011-0228-7 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Lloyd Michael Department of Plant Science and Landscape Architecture, University of Maryland-College Park, 2102 Plant Sciences Building, 20742-4452, College Park, MD, USA aut NATIONALLICENCE 700 1- Burnett Jr Robert Department of Plant Science and Landscape Architecture, University of Maryland-College Park, 2102 Plant Sciences Building, 20742-4452, College Park, MD, USA aut NATIONALLICENCE 700 1- Engelhardt Katharina Appalachian Laboratory, University of Maryland Center for Environmental Science, 301 Braddock Road, 21532-2307, Frostburg, MD, USA aut NATIONALLICENCE 700 1- Neel Maile Department of Plant Science and Landscape Architecture, University of Maryland-College Park, 2102 Plant Sciences Building, 20742-4452, College Park, MD, USA aut NATIONALLICENCE 773 0- Conservation Genetics Springer Netherlands 12/5(2011-10-01), 1269-1285 1566-0621 12:5<1269 2011 12 10592 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer