Macroscale Assessment of American Shad Spawning and Nursery Habitat in the Mattaponi and Pamunkey Rivers, Virginia We hypothesize that underlying
relationships exist between macroscale habitat variables,which are measures of longitudinal heterogeneity of a river on a large scale, and the presence
or absence of American shad eggs and larvae. We describe these relationships with multivariate statistical analyses and supplement the macroscale assessment with more detailed microscale habitat descriptors for two tributaries of the York River
(Mattaponi and Pamunkey rivers).
Oyster Reef Restoration Targeting This project uses GIS to select sites within Virginia Chesapeake Bay bottom suitable for the construction of oyster reefs. The project supports ongoing Baywide oyster reef restoration activities. Protocols for selection include: suitable substrate composition, public grounds, appropriate salinity, and disease resistant waters. Final products include a series of maps delineating the suitable sites. Products are currently hardcopy only, but a website is planned.
Shad Spawning Habitat in Mattaponi and Pamunkey A combination of remote sensing and on-site data collection and analyses was used in this study as an effective
way to rapidly assess essential fish habitat when data are limited, allowing the linkage of fish population data with habitat evaluations.
Shellfish TMDLs There were two important goals for this project, including the assembly and compilation of digital data for the Coastal Plain and tidal waters of Virginia, and the categorization of the
Division of Shellfish Sanitation (DSS) shellfish growing areas to determine if some are similar enough for water quality models to be effectively transferred from the modeled growing areas to other areas. This report summarizes the data and statistical analyses and discusses the results.
Sturgeon Spawning Habitat on the James and Appomattox Rivers/Side Scan Sonar This projectís objectives are to conduct bottom mapping of potential Atlantic sturgeon spawning reaches using sidescan sonar to ascertain the presence and location of essential spawning habitat (e.g. gravel beds) in the James and Appomattox rivers. Areas surveyed include the upper reaches of the James River from Shirley Plantation to Richmond; as well as the Appomattox River from the mouth to the Colonial Heights Bridge.
Animals of the Intertidal Sand and Mud Flats This publication addresses the animals of the sand and mud flats that oftentime go unnoticed. A close examination reveals a myriad of creatures and activities just below the sediment surface.
Historic Oyster Reef Mapping for Virginia Primary Tributaries Historic bathymetric charts dating back to the 1800s and including major tributaries in Virginia are being digitized using ArcInfo. Bathymetric soundings from the mid to late 1800s suggest that bathymetric highs within the rivers may represent historic oyster reefs. Using the triangular integrated network (TIN) model to develop three dimensional representations of these relief areas, the structures appears to be elongated, elliptical or dome shaped. Bottom sampling from the early 1970s reveal that many of these are associated with shell bottom providing some verification that they were oyster reefs. Today, these reefs are gone from Virginiaís tributaries. This ongoing project to reconstruct the distribution of reefs in history may assist in understanding the demise of these habitats and ensure the success of future restoration efforts. See final report at: http://ccrm.vims.edu/pubs/ReefRestRpt.pdf
Chesapeake BayWatch with Dr. Kirk Havens Chesapeake Bay Watch is a continuing program designed to engage the public in issues regarding the living resources and natural history of the Bay. Topics range from current issues to plant and animal species to seasonal changes in the Bay and other topics of general interest.
1375 Greate Road
P.O. Box 1346
Gloucester Point, VA 23062