Recent Submissions

  • Maryland Tidewater News, Volume 10, Number 4, September 1953

    Chesapeake Biological Laboratory (Maryland Department of Research and Education, 1953-09)
  • Maryland Tidewater News, Volume 10, Number 3, August 1953

    Chesapeake Biological Laboratory (Maryland Department of Research and Education, 1953-08)
  • Maryland Tidewater News, Volume 10, Number 2, July 1953

    Chesapeake Biological Laboratory (Maryland Department of Research and Education, 1953-07)
  • Maryland Tidewater News, Volume 10, Number 1, June 1953

    Chesapeake Biological Laboratory (Maryland Department of Research and Education, 1953-06)
  • PCB desorption kinetics under realistic shear and turbulence [progress report]

    Baker, Joel; Schneider, Abby; Porter, Erika (University of Maryland Center for Environmental Science. Chesapeake Biological Laboratory, 2004-01-20)
    We hypothesize that the impact of PCB desorption from resuspended sediments depends upon the intensity of the resuspension (which scales to bottom stress in the absence of organisms), the rate at which each congener desorbs (which depends on the size and hydrophobicity of the chemical, the relative amount of 'labile' and 'resistant' forms, and the size distribution of the suspended particles), and the residence time of the particles in the water column (which depends on the time-variable water column turbulence regime and the particle settling velocities). In order to accurately quantify the impact of PCB desorption from Hudson River sediments, we are conducting experiments that realistically mimic bottom shear stress and water column turbulence and rapidly measure PCB congener release. The objectives of this study are to measure the kinetics of PCB congener desorption from Hudson River sediments under realistic bottom shear and water column turbulence conditions and to quantify the impact of shear stress and contaminant aging on PCB desorption kinetics.
  • Fresh-water dinoflagellates of Maryland

    Thompson, R.H. (Chesapeake Biological Laboratory, 1947-05)
    Collections were made in the summer of 1942 and again at different times in 1946 and 1947. Some collections were not sufficient in numbers to allow for proper identification, so the present paper does not give a complete list. Of the 20 identified species reported on in the paper, two are new to science and ten have not been reported previously for the United States.
  • Effect of Susquehanna River stream flow on Chesapeake Bay salinities and history of past oyster mortalities on upper Bay bars

    Beaven, G. Francis (Chesapeake Biological Laboratory, 1946)
    A study of possible causes for extensive mortality of oysters in the Upper Chesapeake Bay was taken on by year-round monitoring of conditions during a two-year period.
  • A study of water quality in Baltimore Harbor

    Garland, Chesley F. (Chesapeake Biological Laboratory, 1952-09)
    Baltimore Harbor is polluted by discharge of sewage and industrial wastes into tributary streams and peripheral waters. The Harbor is used extensively for navigation, industrial water supply, and recreation as well as for waste disposal. The degree of pollution varies from negligible in the principal fairway to severe in the innermost sections. Private industry discharges several hundred tons of acid materials daily and is also the principal source of organic pollution.
  • A survey of the marine nematodes of Chesapeake Bay, Maryland

    Timm, Richard W. (Chesapeake Biological Laboratory, 1952-12)
    The study here reported is a survey of the most common non-parasitic nematode families of Chesapeake Bay, Maryland, with descriptions and figures, so that ecological workers and students of invertebrate zoology may be encouraged not to pass over this highly interesting and abundant invertebrate phylum. This survey is not a complete account of the free-living nematode population of the Bay, however, since only the middle section of the Bay was sampled and since the collections were not made systematically throughout the year. The physical and chemical factors of Chesapeake Bay may be found in several publications of the Chesapeake Biological Laboratory, Solomons Island, Maryland, and in the records of the Chesapeake Bay Institute, Annapolis, Maryland.
  • The Maryland crab industry, 1950

    Cargo, David G.; Cronin, Lewis Eugene (Chesapeake Biological Laboratory, 1951-12)
    This report contains the latest and most complete figures available on Maryland's crab industry for 1950. In it the amount and the value of crabs have been recorded on monthly, gear, and area bases.
  • Report of Chesapeake Biological Laboratory, 1937

    Truitt, R.V. (Chesapeake Biological Laboratory, 1937)
    The Chesapeake Biological Laboratory is a research and study center founded to accelerate the acquisition of knowledge through the gathering and dissemination of facts to the end that there may be a fuller appreciation of nature.
  • Crab mortality on Chesapeake Bay shedding floats

    Beaven, G.F.; Truitt, R.V. (Chesapeake Biological Laboratory, 1939)
    Reports of high mortality resulting from the impoundment of crabs (Callinectes sapidus) during the preshedding period, to produce soft crabs, have been current in Maryland and Virginia for many years. The death rate of crabs on floats has been estimated by certain of the operators to run as high as 86% at Cape Charles, and to figures nearly as high at Crisfield and elsewhere during one season of the year. A study of this mortality and the factors influencing it have been in progress at the Chesapeake Biological Laboratory for two seasons.
  • Report of Chesapeake Biological Laboratory, 1938

    Truitt, R.V. (Chesapeake Biological Laboratory, 1938)
    Substantial progress was made in 1938 both in respect to additions made in the physical plant and to the problems effectively pursued by an energetic staff.
  • On four species of Copepoda new to Chesapeake Bay, with a description of a new variety of Paracalanus crassirostris Dahl

    Davis, Charles C. (Chesapeake Biological Laboratory, 1944-01)
    At this time, four additional species, unreported by Wilson [1932], can be added to the list of those species to be found within the limits of the bay. These are Acartia tonsa Dana, Cyclops vernalis Fischer, Diaptomus spatulocrenatus Pearse, and Paracalanus crassirostris Dahl var. nudus nov. The specimens from which identifications were made were collected by means of Clarke-Bumpus nets, in use on the motor ship "Mahatru."
  • Muskrats on tidal marshes of Dorchester County

    Harris, Van T. (Chesapeake Biological Laboratory, 1951)
    This bulletin reports, in a non-technical manner, investigations on the Virginia muskrat, prevalent in Maryland, from July, 1949 to June, 1951.
  • The life history of the silverside, Menidia menidia (Linnaeus)

    Bayliff Jr., William H. (Chesapeake Biological Laboratory, 1950-08)
    This paper is based on an attempt to assemble the existing knowledge of the silverside, Menidia menidia, and to contribute to what is known about the life history of this species. A vast amount of work is needed on the ecological relationships between the food fish and the forage fish. One of the most important forage fishes on the Atlantic Coast is the silverside. To understand the inter-relationships between the food fish and the forage fish it is necessary first to understand the life histories of both. For this reason it is important that the life history of this species be studied.
  • An ecological study of seasonal distribution of Ostracoda, Solomons Island, Maryland, region

    Tressler, Willis L.; Smith, Essie M. (Chesapeake Biological Laboratory, 1948-03)
    The determination of the distribution and seasonal fluctuations of ostracodes living in the littoral zone directly in front of the Chesapeake Biological Laboratory has been attempted in the present study. Samples taken in other parts of the Chesapeake Bay and around Solomons harbor, show that other species of ostracodes exist but these forms have not been considered in the two-year study here reported. The seasonal distribution of the species was compared with hydrographical records furnished for the same period by the Chesapeake Biological Laboratory in order to determine the correlation between ecological factors and seasonal fluctuations in numbers and species of Ostracoda.
  • A five-year study of the striped bass fishery of Maryland, based on analyses of the scales

    Tiller, Richard E. (Chesapeake Biological Laboratory, 1950-05)
    The striped bass, or rock as the species is called in the Chesapeake area, ranks high in value and volume among the commercially important fish taken in Maryland waters and, in addition, is highly prized as a game fish by sportsmen. Interest in the marked fluctuations characteristic of the species stimulated the investigation begun in October, 1941.
  • Ecological factors related to the distribution of Bankia gouldi Bartsch in Chesapeake Bay

    Scheltema, Rudolf S.; Truitt, R.V. (Chesapeake Biological Laboratory, 1954-05)
    Organisms were collected on test panels, six inch lengths of dressed two by four inch pine, suspended in the water in a vertical position as described by Turner (1947). The panels were usually located at some convenient structure such as a dock-piling or sea-wall. Except where otherwise indicated by the data, the samples were collected from each station once a month between May 1950 and May 1953. During the three year period, seven hundred and nineteen panels were submerged in Chesapeake Bay. Approximately 14,000 organisms were encountered on these panels of which 20% or approximately 3,000 organisms could be identified from the dried pallets. Preliminary notes on the extent of fouling were made in the field after which the samples were removed to the laboratory for further study.
  • Maryland commercial fisheries statistics, 1944-1945

    Hammer, Ralph C.; Hensel, Harry A.; Tiller, Richard E. (Chesapeake Biological Laboratory, 1948-07)
    This report presents a statistical analyses of the "fin" fisheries, as distinguished from the crab and oyster fisheries of Maryland, for 1944 and 1945. Comparative data on the catch by species, by area, and by gear, based principally on daily reports from the fishermen, are available for the first time as a result of a comprehensive statistical survey made by the Department of Research and Eduction to determine the results of the new management plan for the fisheries, referred to as the Maryland Management Plan.With the initiation in 1941 of a new system of fishery management in the State, a conservation plan based on the principle of stabilized fishing effort, it became obvious that a more accurate catch record system was needed for the proper administration of the program. The Management Plan stabilized the number of licensed fishermen at the 1939-1940 level, and provided for controlled expansion of the fishery to take place only when and where the industry warranted it as a result of increased fish populations. The text of the Plan may be found in Article 39, Section 60, Annotated Code of Maryland, 1943 Supplement. Publications 1, 2, 5, and 6 of the Educational Series of the Department of Research and Education explain the operating principles and the application of same to two important Maryland species, the shad and the rock or striped bass.Ocean fishery records only cover monthly gross landings.

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