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Tom Parham (MD-DNR), Steve Ailstock (AACC), Chris Tanner (SMC), Bob Orth (VIMS), Bob Murphy (ACB) & Peter Bergstrom

Techniques and Facilities for SAV Restoration in the Chesapeake Bay. Tom Parham (MD-DNR), Steve Ailstock (AACC), Chris Tanner (SMC), Bob Orth (VIMS), Bob Murphy (ACB) & Peter Bergstrom (NOAA).

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Tom Parham (MD-DNR), Steve Ailstock (AACC), Chris Tanner (SMC), Bob Orth (VIMS), Bob Murphy (ACB) & Peter Bergstrom

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  1. Techniques and Facilities for SAV Restoration in the Chesapeake Bay Tom Parham (MD-DNR), Steve Ailstock (AACC), Chris Tanner (SMC), Bob Orth (VIMS), Bob Murphy (ACB) & Peter Bergstrom (NOAA)

  2. Action Item 4.2: Identify, evaluate and recommend techniques and facilities capable of producing adequate quantities of seeds and plants for planting. One of the current obstacles to SAV restoration is the lack of plants, propagules and seeds. There are several potential sources, including SAV beds that are established specifically to serve as sources of plant material; laboratories and nurseries capable of propagating SAV for restoration purposes; wild collection (when it can be achieved without damaging the donor populations, or when it is harvested from areas that would be lost due to construction activities). The genetic diversity of SAV beds should be taken into consideration.

  3. How many plants, propagules or seeds do we need to restore 1000 acres (4,047,000 m2) by 2008? Acres

  4. How many plants, propagules or seeds do we need?

  5. How many plants, propagules or seeds are currently available through existing sources? Plants

  6. How many plants, propagules or seeds are currently available through existing sources? Winter buds/Turions

  7. Existing Materials Summary • Existing SAV production could produce between 8% and 32% (at plant densities <2 per m2) of annual restoration needs. • Production of SAV through micro-propagation could be expanded to cover a larger portion of SAV needs. • However, planting >400,000 plants could be problematic.

  8. How many plants, propagules or seeds are currently collected through wild sources?

  9. How many plants, propagules or seeds are to be collected through wild sources in 2004?

  10. How many seeds are currently available through wild sources?

  11. How many winter buds/turions are currently available through wild sources?

  12. Wild Collection Summary • Current eelgrass seed collection provided between 2% and 94% of annual restoration needs. • 2004 eelgrass seed collection effort could provide between large percentage of annual restoration needs. • Seed collection methods will require refinements. • Seed production is patchy, germination rates are variable and selection of mature seeds not easily predictable. • Seeds/turions/winter buds can be easier to store than adult plants. • Turions/winter buds could be collected at areas selected for impact (dredging, bridge construction, etc).

  13. Summary • Existing production and collection rates could provide large percentage of annual restoration needs. • Knowledge of proper seed storage conditions, identification of mature seeds and success of seed bags needs to be improved. • Impact to donor beds needs to be evaluated.

  14. SAV Action item 4.2.ppt Tom Parham 4/8/04 SAV strategy conference

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