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Terrestrial and Aquatic Ecology Commons™
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Articles 1 - 3 of 3
Full-Text Articles in Terrestrial and Aquatic Ecology
Environmental Factors Affecting Nocturnal Migrations Of Macrobenthos, C. Timothy Morris
Environmental Factors Affecting Nocturnal Migrations Of Macrobenthos, C. Timothy Morris
Biological Sciences Theses & Dissertations
Nocturnally dispersing macrobenthic invertebrates of the Lafayette River, Norfolk, Virginia were collected from September 4 to October 4, 1982 to determine environmental factors affecting migrations. A total of 55 taxa were identified from 325 surface and bottom nocturnal plankton tows. Peracaridan crustaceans were the dominant (99.0% of the total density) group collected. Six of the commonly collected species showed a significant (P
Urbanization And Environmental Change In The Lynnhaven Estuary, Randal D. Owen
Urbanization And Environmental Change In The Lynnhaven Estuary, Randal D. Owen
Biological Sciences Theses & Dissertations
Fishes from the industrialized environs of the Elizabeth River, Virginia were surveyed for external evidence of disease during June through October 1984. A highly significant (p < 0.001) incidence of disease was found in demersal fishes collected by otter trawl from a site in the industrially contaminated Southern Branch compared to a less contaminated Western Branch site. Cataracts, fin erosion and dermal lesions were the most commonly occurring anomalies in the Southern Branch finfish.
Static, solid-phase toxicity tests employing sediment collected from the Southern Branch site resulted in an immediate toxic stress in the spot, Leiostomus xanthurus, which resulted in 100% mortality within 24 hours, compared with no mortalities in control systems. Spot exposed to control, i.e., pollution free, and diluted Southern Branch sediments innoculated with the pathogenic bacterial species, Vibrio anguillarium, developed significant (p ≤ 0.020) cases of fin erosion at a mean total bacterial community density …
The York River: A Brief Review Of Its Physical, Chemical And Biological Characteristics, Michael E. Bender
The York River: A Brief Review Of Its Physical, Chemical And Biological Characteristics, Michael E. Bender
Reports
The purpose of this paper is to provide an overview of the physical, chemical and biological characteristics of the York River, Virginia. The river is formed by the confluence of the Mattaponi and Pamunkey rivers at West Point, Virginia. It is tidal over its entire length and flows to the western shore of Chesapeake Bay.