. Addresses delivered at the Convention of the National Shellfisheries Association. Shellfish fisheries. - 116 - Here is a chart that shows our twelve transect rims across the Bar, Positions and lengths of broken lines represent, as nearly as our plotting can make it, positions of dredge hauls on the bottom. This is our first survey coverage of the Bar in April nineteen fifty- two, Coiint seventy-nine hauls, I have taken you now through the operation of bringing bottom samples to vessel deck. This is by far the easiest phase. Subsequent treatment includes first the bulk volume measurement of t
. Addresses delivered at the Convention of the National Shellfisheries Association. Shellfish fisheries. - 116 - Here is a chart that shows our twelve transect rims across the Bar, Positions and lengths of broken lines represent, as nearly as our plotting can make it, positions of dredge hauls on the bottom. This is our first survey coverage of the Bar in April nineteen fifty- two, Coiint seventy-nine hauls, I have taken you now through the operation of bringing bottom samples to vessel deck. This is by far the easiest phase. Subsequent treatment includes first the bulk volume measurement of the catch of each haul, in- cluding oysters, shells, stones and all other natural bottom material except mud. Next we count all oysters and record their lengths. We volume the broken shells, count blank shells, count and estimate weights of stones. This may not sound like much in its telling. I can assure you, however, that these few basic records supply us a wealth of material. They are enough to provide data for serious analysis that will tax our capabilities. Surely we now have information that must be treated statistically if we are to derive most meaningful inter-pretation of our work. At this time aiid with this tijne, I con give some examples of the types of inforiuation being found in our data. Perhaps the logical first presen- tation is our analysis of x^hat the dredge catches. By this I mean all the natural bottom material, IJe reduce catch data to volume units of forty parts per busliel and convert this tc araovits per one hundred square yards. Conversion is made from hauls ttot covered between fifty and eighty square yards per t JO It Ik " J* it'iu yiii > 1» » I* \. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original National Shellfisheries Association. Convention; U. S. Fish and Wild
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Keywords: ., bookauthorusfish, bookcentury1900, booksubjectshellfishfisheries
