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Full-Text Articles in Life Sciences
Human Impacts On Beach Use By Wintering And Migrating Birds In The Lower Chesapeake Bay, Ellen Fitzsimmons Mclean
Human Impacts On Beach Use By Wintering And Migrating Birds In The Lower Chesapeake Bay, Ellen Fitzsimmons Mclean
Dissertations, Theses, and Masters Projects
No abstract provided.
Life History, Population Dynamics And Yield-Per-Recruit Modeling Of Atlantic Croaker, Micropogonias Undulatus, In The Chesapeake Bay Area, Luiz R. Barbieri
Life History, Population Dynamics And Yield-Per-Recruit Modeling Of Atlantic Croaker, Micropogonias Undulatus, In The Chesapeake Bay Area, Luiz R. Barbieri
Dissertations, Theses, and Masters Projects
Otoliths, scales, dorsal spines, and pectoral fin rays, of Atlantic croaker, Micropogonias undulatus, were compared for legibility of presumed annuli and precision in repeated readings, to determine the best structure for ageing. Marks on transverse otolith sections were easiest to read and showed the best agreement between readings. Fish collected in Chesapeake Bay and in Virginia and North Carolina coastal waters during 1988-1991 were then aged using otolith sections. Ages 1-8 were recorded, but eight-year-old fish were rare. Marginal increment analysis showed that for ages 1-7 annuli are formed once a year during the period April-May. Otolith age readings were …
Immigration Of Blue Crab (Callinectes Sapidus) Megalopae In The York River, Virginia: Patterns And Processes, Eugene J. Olmi Iii
Immigration Of Blue Crab (Callinectes Sapidus) Megalopae In The York River, Virginia: Patterns And Processes, Eugene J. Olmi Iii
Dissertations, Theses, and Masters Projects
Following larval development in coastal waters, the postlarval stage, the megalopa, of the blue crab enters estuaries and colonizes juvenile/adult habitats. I examined the dynamics of the immigration of blue crab megalopae in the York River, Virginia. Plankton samples were collected nightly during flood tide in the York River Jul-Nov 1987, 1988 and 1989 to quantify variation in abundance of blue crab megalopae during the recruitment season. The abundance of megalopae was highly episodic, and significantly correlated with wind stress to the west (1987, 1988 and 1989), wind stress to the north (1989), and observed tidal range at Gloucester Point …