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Hydrological Surveys for Locust Point Power Plant,Part 4: 1969 Phytoplankton Collections in Locust Point Region. Prepared for Util
	ML19329B742
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Site:	Davis Besse
Issue date:	07/31/1970
From:	Richard Anderson, Ayers J, Ohara N; MICHIGAN, UNIV. OF, ANN ARBOR, MI
To:	;
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	Download: ML19329B742 (43)
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HYDROLOGICAL SURVEYS FOR THE LOCUST POINT POWER PLANT PART IV.

The 1969 PHYTOPLANKTON COLLECTIONS IN THE LOCUST POINT REGION pF4 3

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c THE 1969 PHYTOPLANKTON COLLECTIONS IN THE LOCUST POINI REGION on May 15 and 16, 1969, phytoplankton collections were made at 11 stations in the immediate environs of Locust Point.

Figure 1 presents the station positions of the May survey. Appendix Tables 1-12 inclusive give the total phytoplankton species composition and the phytoplankton species and numbers collected at each station of the May survey. Table 1 summarizes the dominant species of the May collections.

During 21-29 October 1969 phytoplankton collections were made at 20 stations in the immediate environs of Locust Point.

Figure 2 shows the station positions of the October survey. The total area covered in October was not significantly different from that covered in May; the difference in number of stations collected is due to insertion of several stations at positions that were not occupied in May. Appendix Tables 13-33 give the total phytoplankton species population as well as the phytoplankton species and numbers collected at each of the Locust Point stations in October. Table 2 summarizes the dominant species of the October collections.

The Locust Point phytoplankton population in May of 1969 was composed almost entirely of diatoms, with very minor contributions by green algae and blue-green algae.

In May the heavily dominant species were the diatoms Fragilaria capucina, Melosira binderana and Melosira granulata combined (combined because their colonies were commonly intertwined, and though cells could be seen well enough-to count by focusing the microscope through, the underneath cells could not be seen well enough to identify them to species), and Diatoma tenue v.

elongatum with the latter being consistently the third most abundant species in the station collections. One to-five species of green algae were taken at each station of the May survey, a total of 14 green algae species in all being collected. At each station of the May survey representatives of the blue-green.

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4 algae, identified as Oscillatoria spp., were collected in small numbers; no examples of the *roublesome species Aphanizomenon flos-acune were taken during this survey.

The October phytoplankton collections were characterized by having a much greater variety of species present at each station than had been the case in May.

They were also characterized by having lower total numbers of cells per liter and generally lower numbers of cells per species. In the October collec-tions the diatoms remained dominant by a ight' margin in numbers of cells, with green algae of 55 species in second place by numbers, and blue-green algae belonging to 16 species in third place numberswise. Blue-greens of the genus Aphanizomenon were present in all but two stations of the October survey. The relative decline in diatom dominance, and the rise of green algae and blue-greens into nearly-dominant positions between May and October can at present be taken only to possibly represent a seasonal deterioration in basic water quality which may be typical of the region, or which may be only a part of a more widespread peculiarity of 1969.

Flagellates, not found in the May collections, had become abundant by October.

As a means of showing and comparing the relative phytoplankton populations in the immediate environs of Locust Point in 1969, the following comparison table has been devised.

Judging water quality by the types of the three most dominant (numerous) plankters present (Table 2) indicates that the poorest water was found at Station PL-1 off Turtle Creek. At this station the dominant organism was the blue-green alga Oscillatoria, the second most dominant was the blue-green Aphanizomenon flos-acuse, and the diatom Cvelotella occupied third place.

Another station adjudged to exhibit poor water quality was Station PL-7 where the dominant organism was the flagellate Cryptomonas with the blue green,

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Comparison Table Locust Point phytoplankton, May versus October 1969 May October Mean No. of Range, Nos.

Mean No. of Range, No s.

No. of cells / liter cells / liter No. of cells / liter cells / liter species

per station per station species

per station per station 6

6 Diatoms 17 4,450,000 1.9-ll.9x10 20 1,039,000 0.1-1. 7x10 3

6 Green Algae 14 4,450 1-17 x10 55 666,000 0.07-1.3 x10 3

Flagellates 0

6 321,000 85-671x10 3

6 Blue-Greens 1

5,000 1-15x10 16 423,0D0 0.07-1.4x10

Identified species, unidentified single species (sp.), and unidentified plural species (spp.) combined.

Oscillatoria in second place and the diatom Coscinodiscus rothii third.

Continuing with these criteria, water of questionable quality (in which the second and third dominants were the blue-green Oscillatoria and the flagellate Crvotomonas respectively) was present at Stations PL-13, PL-17, PL-18, and PL-20.

Table 2 permits other assessments of relative quality of water at the i

October stations. If we reason that stations with diatoms in the three most dominant positions were stations with good quality of water, we may then indicate that good quality of water was present at Stations PL-10, PL-ll, and PL-12.

In a more realistic sense, however, it is not good nor meaningful practice to attribute to such indications of water quality at the various stations anything more than a certain illustrativ'e value. In the clearer waters of eastern Lake Michigan small but discrete water masses of visible color differences can, under good observing conditions, be seen to be progressing one af ter the other in the alongshore current.

Color indications of separate water masses could not be expected to be visible in the turbid alongshore currents of Locust Point.

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patchy distributions of poor, intermediate, and good water quality as read from the October phytoplankton dominants can, in the present state of our knowledge of the Locust Point area, be interpreted only to mean that the alongshore currents of Lake Erie are in autumn like those of Lake Michigan in that' (in the relatively calm weather when small boats can work) there pass along the shore discrete water-masses of different origins with different phytoplankton Contents.

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Figure 1.

STATION MAP OF LOCUST POINT PROJECT M AY 19 6 9, SAMPLING TRUE NORTH

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APPENDIX Table 1 Phytoplankton Population Locust Point, 15-16 May 1969 Diatoms Diatoma tenue v. elongatum Melosira binderana Melosira granulata Synedra ulna Synedra acus Fragilaria intermedia Fragilaria capucina Fragilaria crotonensis Asterionella formosa Cyclotella spp.

Navicula spp.

Tabellaria fenestrata Surirella spp.

Nitzschia spp.

Stephanodiscus spp.

Cymbella spp.

Gomphonema spp.

Greens Ulothrix spp.

Pediastrum duplex Scenedesmus abundans Scenedesmus quadricauda Dictyosphaerium pulchelium Ankistrodesmus spp.

Ankistrodesmus falcatus Scenedesmus spp.

Micractinium pusillum Oocystis solitaria Lagerheimia longiveta Golenkinia radiata Act'inastrum hantzschii

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Closteriopsis longissima Blue-Greens Oscillatoria spp. -

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4 APPENDIX Table 2 Phytoplankton Composition Station LPP-1, Locust Point 15 May 1969 Organism No. of Colonies Cells per Liter 3,747 Oscillatoria sp. (BG)

Frag 11 aria crotonensis (D) 1,874 51,524 937 Ankistrodesmus f alcatus (G)

Diatoma tenue v. elongatum (D) 42,156 287,598 Melosira binderana (D) 66,513 526,482 Asterionella formosa (D) 6,558 49,651 Fragilaria capucina (D) 49,651 2,243,636 7,494 Cyclotella sp. (D) 937 Navicula sp. (D) 937 Oocystis solitaria (G)

Scenedesmus quadricauda (G) 937 Syr.edra ulna (D) 937 Tabellaria fenestrata (D) 4,684 30,914 937 Surirella sp. (D) 3,206,000 i

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APPENDIX Table 3 Phytoplankton Composition Station LPP-2, Locust Point 15 May 1969 Organism No. of Colonies Cells per Liter Synedra ulna (D) 17,666 Synedra acus (D) 6,625 Tabellaria fenestrata (D) 2,208 15,458 Pediastrum duplex (G) 2,208 Melosira binderana &

M. granulata combined (DD) 516,742 4,891,385 Diatoma tenue v. elongatum (D) 99,374 1,355,896 Asterionella formosa (D) 24,291 249,538 Fragilaria crotonensis (D) 4,417 117,040 Fragilaria capucina (D) 105,998 5,284,462 Cyclotella sp. (D) 6,625 Scenedesmus abundans (G) 2,208 Ooc: stis solitaria (G) 2,208 Osc111atoria sp. (BG) 2,208 11,953,000

APPENDIX Table 4

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. Phytoplankton Composition 4

Station' LPP-3, Locust Point

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-t Organism No. of Colonies Cells per Liter s

Diatona tenue v. elongatum (D) 47,917 242,675 1,546 Oscillatoria sp. (BG) 1,546 Ulothrix sp. (G)

Melosira binderens (D) 61,828 930,512 4,637 Synedra acum (D) 6,183 Synedra ulna (D)

Fragilaria intermedia (D) 17,003 630,646 Fragilaria capucina (D) 4,637 98,925 1,916,000 a

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APPENDIX Table 5 Phytoplankton Composition Station LPP-4, Locust Point 15 May 1969 Orwanism No. of Colonies Cells per Liter Synedra ulna (D) 13,138 Tabe11 aria fenestrata (D) 10,049 57,202 Diatoma tenue v. elongaman (D) 66,478 672,510 Melosira binderana &

M. granulata combined (DD) 202,526 937,649 Fragilaria crotonensis (D) 1,546 58,748 Asterionella formosa (D) 17,006 135,275 Fragilaria capucina (D) 85,030 3,237,324 Lagerheimia longiseta (G) 773 Golenkinia radiata (G) 773 Cyclotella sp. (D) 3,865 Oscillatoria sp. (BG) 2,319 Dictyosphaerium pulchellum (G) 1,546 Scenedesmus quadricauda (G) 773 Synedra acus (D) 2,319 5,124,000 APPENDIX Table 6 Phytoplankton Composition Station LPP-6, Locust Point 15 May 1969 Organism No. of Colonies Cells eer Liter Fragilaria crotonensis (D) 2,132 14,924 Surirella sp. (D) 1,066 6,396 Synedra ulna (D) 1,066 Synedra acvs (D) 1,066 Dictyosphaerium pulchelium (G)

Ankistrodesmus sp. (G) 1,066 Oscillateria sp. (BG) 2,132 Tabe11 aria fenestrata (D) 7,462 33,046 Diatoma tenue v. elongatum (D) 74,620 380,562 Melosira binderana &

M. granulata combined (DD) 105,534 891,176 Fragilaria capucina (D) 49,036 1,557,426 Scenedesmus abundans (G) 1,066 i

Closteriopsis longissima (G) 1,066 2,892,000 4.__

APPENDIX Table 7 Phytoplankton Composition Station LPP-7, Locust Point 15 May 1969 Organism No. of Colonies Cells per Liter Synedra ulna (D) 4,986 Surirella sp. (D) 997 Oocystis solitaria (G) 997 Melosira binderana &

M. granulata combined (DD) 101,714 622,253 Diatoma tenue v. elongatum (D) 50,857 283,205 Asterionella formosa (D) 9,972 81,770 Tabe11 aria fenestrata (D) 3,989 12,964 Fragilaria capucina (D) 49,860 1,471,867 Micractinium pusillum (G) 1,994 Oscillatoria sp. (BG) 1,994 2,483,000 e

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APPENDIX Table 8 Phytoplankton Composition Station LPP-9, Locust Point 15 May 1969 Organism No. of Colonies Cells per Liter Oscillatoria spp. (BG) 5,888 1,472 Micractinium pusillum (G) 1,472 Scenedesmus quadricauda (G)

Synedra ulna (D) 8,832 Cyclotella spp. (D) 10,304 Gomphonema sp. (D) 1,472 Stephanodiscus sp. (D) 2,944 Synedra acus (D) 7,360 Melosira binderana &

M. granulata combined (DD) 113,344 1,149,632 Asterionella formosa (D) 5,888 27,968 Tabe11 aria fenestrata (D) 1,472 8,832 Diatoma tenue v. elongatum (D) 75,072 450,432 Fragilaria crotonensis (D) 2,944 79,488 Fragilaria capucina (D) 41,216 585,856 2,341,000 l L

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APPENDIX Table 9 Phytoplankton Composition Station LPP-10, Locust Point 16 May 1969 Ornanism No. of Colonies Cells per Liter Fragilaria crotonensis (D) 6,183 74,191 15,457 Synedra acus (D) 6,183 Synedra ulna (D) 15,457 Oscillatoria spp. (BG)

Melosira binderana &

M. granulata combined (DD) 420,417 3,159,309 Fragilaria espucina (D) 108,196 2,550,323 Scenedesmus sp. (G) 3,091 9,274 Cyclotella sp. (D)

Ankistrodesmus falcatus (G) 3,091 Nitzschia sp. (D) 9,274 Diatoma tenue v. elongatum (D) 272,034 1,415,815 Asterionella formosa (D) 12,365 83,465 Tabe11 aria fenestrata (D) 6,183 27,823 7,372,000 l.

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APPENDIX Table 10 Phytoplankton Composition Station LPP-12, Locust Point 16 May 1969 Orzanism No. of Colonies Cells per Liter Synedra ulna (D) 4,314 Oscillatoria sp. (BG) 6,470 Actinastrum hantzschii (G) 2,157 Diatoma tenue v. elongatum (D) 42,058 Melosira binderana &

208,131

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granulata cotbined (DD) 73,331 815,270 Asterionella formosa (D) 4,314 38,822 Tabe11 aria fenestrata (D) 5,392 20,490 Fragilari.a capucina (D) 21,570 628,707 Scenedesmus abundans (G) 1,078 Cyclotella sp. (D) 3,235 1,728,000 APPENDIX Table 11 Phytoplankton Composition Station LPP-13, Locust Point 16 May 1969 Organism No. of Colonies Cells per Liter Scenedesmus quadricauda (G) 1,546 Oscillatoria spp. (BG) 12,368 Jtephanodiscus sp. (D) 9,276 Synedra acus (D) 10,822 Dictyosphaerium pulchelium (G) 6,184 Ankistrodesmus sp. (G) 3,092 Actinas trum hantzschii (G) 3,092 Cyclotella spp. (D) 9,276 Micractinium pusillum (G) 3,092 Synedra ulna (D) 6,184 Tabellaria fenestrata (D) 6,184 30,920 Diatoma tenue v. elongatum (D) 123,680 1,004,900 Melosira binderana &

M. granulata combined (DD) 336,462 5,468,202 Fragilaria enpucina (D) 40,196 1,456,332 Cymbella sp. (D) 1,546 Asterionell.a formosa (D) 4,638 30,920 i.

8,057,000

APPENDIX Table.12 Phytoplankton Composition Station LPP-15, Locust Point 15 May 1969 Organism No. of Colonies Cells per Liter 6,624 Oscillatoria spp. (BG) 2,208 Ankistrodesmus sp. (G)

Navicula sp. (D) 1,104 4,416 Synedra acus (D)

Fragilaria crotonensis (D) 1,104 37,536 Melostra binderana &

M. granulata combined (DD) 59,616 623,760 Diatoma tenue v. elongatum (D) 44,160 195,408 Tabe11 aria fenestrata (D) 9,936 40,848 Asterionella formosa (D) 1,104 11,040 Fragilaria capucina (D) 28,704 1,065,360 Synedra ulna (D) 2,208 Cyclotella sp. (D) 6,624 Closteriopsis longissima (G) 1,104 1,998,000 r l

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Table 1 Summary of May phytoplankton dominants Sention Mcat Dominant Second Dominant Thisd Dominant LPP-1 Fragilaria capucina (D)

Melosira binderana (D)