. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 3X4 R. T. SAWYER AND D. L. HAMMOND IANUARV 30- 20- 10- JUIY AUCUS1 OCTOBtR NOVfMBiR. FEBRUARY - | 11 lIL i i IJbb^iba P r- MARCH -> I \ tyf-j%fifi] fr, Fh-TT^n -fh APRIL 30-1 20- 10- DECEMBER 30n 20- 10- STANDARD LENGTH (MM] 200 FIGURE 3. The relative abundance, seasonal occurrence and length frequency distribution (SL) of the Atlantic menhaden (Brci'oortia ty ran mis) collected by the South Carolina Marine Resources Center from Georgetown south to Hilton Head Island, S. C., for each month (excluding September) of 1970 an
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 3X4 R. T. SAWYER AND D. L. HAMMOND IANUARV 30- 20- 10- JUIY AUCUS1 OCTOBtR NOVfMBiR. FEBRUARY - | 11 lIL i i IJbb^iba P r- MARCH -> I \ tyf-j%fifi] fr, Fh-TT^n -fh APRIL 30-1 20- 10- DECEMBER 30n 20- 10- STANDARD LENGTH (MM] 200 FIGURE 3. The relative abundance, seasonal occurrence and length frequency distribution (SL) of the Atlantic menhaden (Brci'oortia ty ran mis) collected by the South Carolina Marine Resources Center from Georgetown south to Hilton Head Island, S. C., for each month (excluding September) of 1970 and 1971 (combined data). of the river most affected, the number increased from 1985 individuals per square meter in 1924 to as high as 29,107 in 1925. The total weight of the leeches changed from just over 200 kilograms per hectare (180 Ib/acre) in 1924 to over 2800 kilograms per hectare (2550 Ib/acre) in 1925. This meteoric rise in the concentration of leeches was undoubtedly due partially to the eutrophication of the river at that time. A similar outbreak of the fish leech riscicolu f>unctatu was. 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 Marine Biological Laboratory (Woods Hole, Mass. ); Marine Biological Laboratory (Woods Hole, Mass. ). Annual report 1907/08-1952; Lillie, Frank Rattray, 1870-1947; Moore, Carl Richard, 1892-; Redfield, Alfred Clarence, 1890-1983. Woods Hole, Mass. : Marine Biological Laboratory
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Keywords: ., bookauthorlilliefrankrat, booksubjectbiology, booksubjectzoology
