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Articles 1 - 9 of 9
Full-Text Articles in Entire DC Network
First Records Of Hypleurochilus Geminatus And Centropristis Philadelphica From Chesapeake Bay, Aimee D. Halvorson
First Records Of Hypleurochilus Geminatus And Centropristis Philadelphica From Chesapeake Bay, Aimee D. Halvorson
VIMS Articles
During the fall of 2007, Centropristis philadelphica (rock seabass) and Hypleurochilus geminatus (crested blenny) were collected from Chesapeake Bay. These captures are significant as they represent the first substantiated record of C. philadelphica from Chesapeake Bay and only the second and third validated records of H. geminatus. Additionally, the first record of H. geminatus from Chesapeake Bay was only recently recognized since the specimen had been previously misidentified as Parablennius marmoreus (seaweed blenny). The collection of seven individuals of H. geminatus in 2007, from two locations, indicates that the species may be resident within the Chesapeake Bay estuary.
School Of Marine Science Graduate Catalog 2009-2010, College Of William And Mary, School Of Marine Science
School Of Marine Science Graduate Catalog 2009-2010, College Of William And Mary, School Of Marine Science
Miscellaneous
Catalog for the Graduate program from the School of Marine Science at the College of William and Mary for the listed academic year.
York River Water Budget, Carl Hershner, Molly Mitchell, Donna Marie Bilkovic, Julie D. Herman, Center For Coastal Resources Management, Virginia Institute Of Marine Science
York River Water Budget, Carl Hershner, Molly Mitchell, Donna Marie Bilkovic, Julie D. Herman, Center For Coastal Resources Management, Virginia Institute Of Marine Science
Reports
No abstract provided.
Responses Of Black Vultures To Population Management At Dutch Gap, Virginia, A. E. Duerr
Responses Of Black Vultures To Population Management At Dutch Gap, Virginia, A. E. Duerr
CCB Technical Reports
No abstract provided.
Variability In Juvenile Growth, Mortality, Maturity, And Abundance Of American Shad And Blueback Herring In Virginia, Troy D. Tuckey
Variability In Juvenile Growth, Mortality, Maturity, And Abundance Of American Shad And Blueback Herring In Virginia, Troy D. Tuckey
Dissertations, Theses, and Masters Projects
Young-of-year (YOY) population dynamics of American shad and blueback herring in Virginia's rivers were examined with an emphasis on variability in growth and mortality rates. In addition, an analysis was conducted to relate juvenile abundance indices of American shad to adult indices to establish a stock-recruitment relationship. to accomplish the stock recruitment relationship, an additional study that examined maturation schedules and inter-annual variability in maturation schedules among stocks was performed. Results of population dynamics studies found that growth and mortality rates of American shad and blueback herring varied by river and year and that conspecific abundance was an important factor …
Function Of Seed-Bank Ecology In Mid-Atlantic Semi-Annual And Perennial Zostera Marina Beds, Jessie C. Jarvis
Function Of Seed-Bank Ecology In Mid-Atlantic Semi-Annual And Perennial Zostera Marina Beds, Jessie C. Jarvis
Dissertations, Theses, and Masters Projects
The effects of water quality and sediment composition on mid-Atlantic semi-annual and perennial Zostera marina reproductive success, seed-bank viability, and seed germination were elucidated using laboratory and in situ experiments, quantitative field observations, and ecological model simulations. The sediment seed-bank was found to play a large role in the recovery of perennial Z. marina beds in the Chesapeake Bay and in the yearly re-establishment of beds in North Carolina which were determined to have a semi-annual life history. However, the resiliency provided by sediment seed-bank for both semi-annual and perennial Z. marina beds was limited as seeds remained viable for …
Mortality Of Diamondback Terrapins In Blue Crab Traps: Population Changes And Conservation In Southeastern Virginia, Megan Ann Rook
Mortality Of Diamondback Terrapins In Blue Crab Traps: Population Changes And Conservation In Southeastern Virginia, Megan Ann Rook
Dissertations, Theses, and Masters Projects
No abstract provided.
Enhancing The Trap Of Lady's Slippers: A New Technique For Discovering Pollinators Yields New Data From Cypripedium Parviflorum (Orchidaceae), Martha A. Case, Zachary R. Bradford
Enhancing The Trap Of Lady's Slippers: A New Technique For Discovering Pollinators Yields New Data From Cypripedium Parviflorum (Orchidaceae), Martha A. Case, Zachary R. Bradford
Arts & Sciences Articles
Approximately one-third of orchid species offer no reward to their floral visitors and instead trick them into pollination. Typically, these deceptive systems have low visitation and fruiting rates because pollinators can learn to avoid non-rewarding species. Consequently, pollination ecology studies in these species often require long hours in the field to witness relatively few floral visitations relative to rewarding plants. Cypripedium parviflorum is a food-deceptive orchid with a pouch-like trap that temporarily imprisons pollinators. To escape, pollinators exert pressure on the stigma which facilitates pollination and widens the escape holes located near each anther. This study reports the use of …
Relaxation Oscillation Profile Of Limit Cycle In Predator-Prey System, Sze-Bi Hsu, Junping Shi, Junping Shi
Relaxation Oscillation Profile Of Limit Cycle In Predator-Prey System, Sze-Bi Hsu, Junping Shi, Junping Shi
Arts & Sciences Articles
It is known that some predator-prey system can possess a unique limit cycle which is globally asymptotically stable. For a prototypical predator-prey system, we show that the solution curve of the limit cycle exhibits temporal patterns of a relaxation oscillator, or a Heaviside function, when certain parameter is small.