Phytoplankton Diversity in the Lower York River, Virginia, June 1960 -June 1961
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W&M ScholarWorks Reports 1962 Phytoplankton diversity in the lower York River, Virginia, June 1960 -June 1961 Bernard C. Patten Virginia Institute of Marine Science Follow this and additional works at: https://scholarworks.wm.edu/reports Part of the Environmental Microbiology and Microbial Ecology Commons, Marine Biology Commons, and the Plant Sciences Commons Recommended Citation Patten, B. C., & Virginia Institute of Marine Science. (1962) Phytoplankton diversity in the lower York River, Virginia, June 1960 -June 1961. Special scientific eporr t (Virginia Institute of Marine Science); no. 38. Virginia Institute of Marine Science, College of William and Mary. https://doi.org/10.21220/V5R307 This Report is brought to you for free and open access by W&M ScholarWorks. It has been accepted for inclusion in Reports by an authorized administrator of W&M ScholarWorks. For more information, please contact [email protected]. PHYTOPLANKTON DIVERSITY IN THE LOWER YORK RIVER, VIRGINIA June 1960 - June 1961 __________________________, ____ _ SPECIAL SCIENTIFIC REPORT NO. 38 VIRGINIA INSTITUTE OF MARINE SCIENCE Gloucester Point, Virginia 1962 -1- PHYTOPLANKTON DIVERSITY IN THE LOWER YORK RIVER, VIRGINIA June 1960 - June 1961 Data on phytoplankton diversity obtained in connection with 37 productivity experiments conducted in the lower York River by the Planktology Department are reported. A single station situated about 300 yards from the VIMS pier was studied. Hydrographic, nutrient, chlorophyll, seston and productivity data obtained were summarized in Report No. 22 (1961) of this series. The diversity indices employed have been fully described in Special Scientific Report No. 23 (1961), and also in J. Mar. Res. �: 57-75 (1962). The basic data for their computation were obtained from water samples collected at the beginning of each experiment from the surface, 2 ft, 6 ft, 10 ft and bottom (30 ft mean low water). Sedgwick-Rafter mounts were made of the fresh material, and phytoplankters distinguished and counted. Results were tabulated as counts (ni) per ml of each of the m taxa present = m (i i, 2, .•• ,m). If N is the total of all organisms (N = � ni), El. then the basic diversity expressions can be written as follows: 8max = log2N! - log2 [N-(m-1)] ! Hmin = log2N! - m log2 (N/m)! = m r H log2N! - � log2 ni � i=l R=Hmax -H Hmax - 8min -2- Computation of these variables as well as mean diversity per ii, organism, Hmax, Hmin, and the ratios H/1\nax and H/8min was performed on an IBM 1620 computer at the Narragansett Marine Labor- atory under the direction of Dr. Saul B. Saila. The most significant results were (i) marked reduction in community diversity (H) below 2 ft (Table 5), without a significant change in H with depth (Table 8), and (ii) corresponding increase of redundancy, R (Table 11). Distribution of this report does not constitute publication, and the data are subject to correction and/or revision. Bernard C. Patten 26 September 1962 -3- EXPERIMENT DATES Experiment No. Dates J. 22-23 Jun 1960 2 29-30 Jun 3 6-7 Jul 4 13-14 Jul 5 19-20 Jul 6 27-28 Jul 7 3-4 Aug 8 10-11 P..ug 9 17-18 A.ug 10 24-25 �.ug 11 31 Aug - 1 Sep 12 7-8 Sep 13 14-15 Sep 14 21-22 Sep 15 27-28 Sep 16 11-12 Oct 17 19-20 Oct 18 1-2 Nov 19 15-16 Nov 20 21-22 :Nov 21 6-7 Dec 22 16-17 Dec 23 6-7 .Jan 1961 24 24-25 Jan 25 10-11 Feb 26 24-25 Feb 27 3-4 Mar 28 10-11 Mar 29 17-18 Mar 30 25-26 Mar 31 30-31 Mar 32 6-7 Apr 33 14-15 Apr 34 21-22 Apr 35 5-6 May 36 19-20 May 37 1-2 Jun -4- Table 1. Number of phytoplankton taxa (rn) recorded at different depths. Expt. No. s 2 6 .10 B 1 11 9 13 9 13 2 15 13 9 10 3 3 14 15 10 9 14 4 13 12 12 13 11 5 15 16 13 11 9 6 15 17 11 13 8 7 14 9 10 7 8 8 16 18 10 15 6 9 18 14 16 15 12 10 15 12 9 12 7 11 16 10 8 8 11 12 17 12 8 5 6 13 14 15 13 9 9 8 15 9 9 5 6 5 16 10 9 9 11. 12 17 13 13 11 7 8 1·0 7 6 13 4. 5 19 20 15 18 12 lC 10 21 12 10 9 ll. 13 22 14 19 16 lEi 15 23 ll 14 11 1r�.1 14 24 15 14 16 17 18 25 18 25 17 19 20 26 18 11 16 lfi 12 27 15 15 17 17 20 28 24 25 18 lEi 21 29 19 21 20 28 29 30 16 19 18 20 21 31 16 15 11 11 15 32 13 11 16 1r-> 14 33 15 12 14 14 14 34 8 10 10 12 6 35 10 2 3 7 8 36 -- 37 9 8 8 3 7 x 14.l 13.4 12.0 11.B 11.8 -5- Table 2. Cell counts (N) in units (cells, chains, or colonies) per ml Expt. No. s 2 6 10 B 1 3003 4107 954 105�! 2437 2 3786 4020 1115 1337 279 3 6440 6068 3832 189�? 1534 4 2109 2247 1559 1219 1818 5 6208 6336 2047 2039 2336 6 2666 4348 896 790 553 7 5022 3017 3999 63S 1273 8 2964 4682 794 89�� 849 9 5622 5577 2582 4896 1691 10 1916 1692 989 531 503 11 2034 1261 649 24S- 650 12 1423 1406 371 31::> 231 13 14 2742 7540 8565 906 371 15 1837 1281 1044 1203 98 16 1616 2309 3297 1206 948 17 5946 1434 1766 1057 245 18 913 502 948 349 703 19 --- 20 2623 2499 2444 1961 2393 21 948 1079 920 725 753 22 1851 1393 956 1417 1378 23 1092 677 1010 1288 1346 24 1516 1365 2185 2011 3096 25 2478 3049 2073 2009 2491 26 1263 1670 4833 3291 3078 27 2330 2740 2405 1844 1709 28 2688 2593 1838 1811 2273 29 2852 2900 3039 4089 2085 30 3358 3178 2830 3381 2586 31 1227 697 934 994 747 32 3526 5012 6732 2881 1927 33 4146 3925 2325 2281 2059 34 1053 398 448 210 856 35 2877 77 285 579 314 36 --- 37 1685 718 516 286 496 x 2758 2700 2094 1510 1356 -6- Table 3. 8max.' bits/ml. Expt. No. s 2 6 10 B l 10388.6 13018.8 3530.2 3334.7 9017.9 2 14791. 4 14875.7 3534.4 4-441.4 442.2 3 24519.3 23706.9 12729.6 5997.5 5840.5 4 7804.2 8055.4 5588.9 4510.8 6289.2 5 24253.9 25343.9 7574.8 7053.8 7404.9 6 10415.7 17777.2 3099.6 2923.3 1659.0 7 19120.5 9563.6 13284.3 1782.7 3819.0 8 11855.0 19523.S 2637.6 a484.9 2194.6 9 23443.2 21266.5 10328.0 19128.l 6062.1 10 7485.6 6065.7 3135.0 1903.6 1412.1 11 8136.0 4188.9 1947.0 2248.6 735.0 12 5816.4 5040.4 1113.0 81.3 597.1 13 14 10712.7 27901.2 27150.3 2871. 9 1113.0 15 5823.1 4060.7 2424.1 :3109.7 227.5 16 5368.2 7319.3 10451. 2 4172.1 3398.5 17 22002.7 5306.4 6109.3 :2963. 4 735.0 18 2563.1 1297.6 3508.0 6 98.0 1632.3 19 20 10247.7 10420.6 8761.6 6514.3 7949.3 21 3398.5 3584.3 2916.3 2508.1 2786.4 22 7047.4 5917.3 3824.0 .5668.0 5383.7 23 3777.7 2577.6 3494.0 4617.4 5124.7 24 5922.8 5197.0 8740.0 8219.9 12910.0 25 10333.0 14159.l 8473.3 8534.1 10765.9 26 5266.6 5777.2 19331. 9 13164.0 11034.5 27 9103.0 10704.8 9830.3 7537.2 7386.1 28 12324.3 12041. 5 7664.3 7244.0 9983.7 29 12115.0 12737.7 13134.3 18496". 8 10128.9 30 13432.0 13499.9 11800.8 lflr612. 4 11358.5 31 4908.0 2723.l 3231.1 3438.7 2918.4 32 13047.7 17338.6 26927.9 11255.7 7336.7 33 16197.9 14070.9 8852.l 8506.0 7839.3 34 3159.0 1322.l 1488.2 752.8 2212.7 35 9557.1 77.0 451.7 1625.4 942.0 36 37 5341.3 2154.0 1548.0 453.3 1392.4 x 10578.8 10253.4 7606.3 5701.6 5004.2 -7- Table 4. 8min' bits/mL Expt. No. s 2 6 10 B l 115.5 96.0 118.7 80.3 135.0 2 166.4 143.6 80.9 9:3.4 16.2 3 164.5 175.9 107.1 87.l 137.5 4 132.4 122.4 116.6 11:2.9 108.2 5 176.4 189.4 131.9 109. 9 89.5 6 159.3 193.3 98.0 115.4 63.7 7 159.8 92.4 107.7 55.8 72.2 8 172.9 207.2 86.6 137.0 48.6 9 211.7 161.8 170.0 171.6 117.9 10 152.6 117.9 79.6 99.4 53.8 11 164.8 92.7 65.3 55.4 93.3 12 167.5 115.0 59.7 20.2 39.2 13 14 159.8 154.6 104.5 78.5 59.7 15 86.7 82.5 40.1 51.1 26.3 16 95.9 89.4 93.5 102.3 108.7 17 150.4 125.8 107.8 60.2 55.4 18 59.0 44.8 118.6 25.3 37.8 19 20 158.9 191.