A study on algae in Devegeçidi Dam Lake

Turk J Bot
28 (2004) 457-472
â TĩBTAK

Research Article

A Study on Algae in Devegeỗidi Dam Lake

Tỹlay BAYKAL
Gazi University, Krflehir Education Faculty, Department of Biology, Krflehir - TURKEY

lkay AầIKGệZ, Kazm YILDIZ
Gazi University, Faculty of Education, Department of Biology, Ankara - TURKEY

Aysel BEKLEYEN
Dicle University, Faculty of Arts and Science, Department of Biology, Diyarbakr - TURKEY

Received: 21.12.2001
Accepted: 08.03.2004

Abstract: This research was carried out between 1995 and 1996 in Devegeỗidi Dam Lake and a total of 112 taxa belonging to 5
divisions were identified, with 29 species belonging to Cyanophyta, 5 to Euglenophyta, 45 to Chlorophyta, 5 to Pyrrhophyta and
28 to Bacillariophyta. Microcystis aeruginosa Kỹtz. from the Cyanophyta was the most abundant and widespread species in
phytoplankton. This was followed by Aphanizomenon floss aquae (L.) Ralfs and Aulacoseira granulata (Ehr.) Simonsen as the
second most abundant and widespread organisms. Pediastrum dublex Meyen, P. simplex var. duodenarium (Bailey) Rabenhorst and
Ceratium hirundinella (O.F.Muell.) Duj. species were widely distributed and sometimes observed in abundance. The morphometric
structure of Devegeỗidi Dam Lake, its physical and chemical properties, algal composition and the high abundance of some species
in certain months show the mesotrophic characteristics of this lake. Temperature and phosphorus inflow were noted as the main
factors causing an increase in eutrophication.
Key Words: Phytoplankton, Algae, Devegeỗidi Dam Lake.

Devegeỗidi Baraj Gửlỹ Algleri ĩzerine Bir Arafltrma
ệzet: Devegeỗidi Baraj Gửlỹnde 1995 1996 yllarnda yaplan arafltrmalar sonucu Cyanophyta (29), Euglenophyta (5),
Chlorophyta (45), Pyrrhophyta (5), Bacillariophyta (28), bửlỹmlerine ait toplam 112 takson teflhis edilmifltir. Cyanophyta grubu
alglerinden Microcystis aeruginosa Kỹtz. fitoplanktonda yaygn ve dominant, Aphanizomenon floss - aquae (L.) Ralfs, Aulacoseira
granulata (Ehr.) Simonsen ise ikinci derecede en bol ve yaygn organizmalardr. Pediastrum dublex Meyen, P. simplex var.
duodenarium (Bailey) Rabenhorst, Ceratium hirundinella (O.F.Muell.) Duj. tỹrleri yaygn ve arasra bol olarak gửzlenmifllerdir.
Devegeỗidi Baraj Gửlỹ, morfometrik yap, suyun fiziksel ve kimyasal ửzellikleri, algal kompozisyonu ve baz tỹrlerin belirli aylardaki
ỗoÔalmalar ile mezotrofik karakterlidir. ScaklÔa ve fosfor girdisine baÔl olarak ửtrofikasyonun arttÔ gửzlenmifltir.
Anahtar Sửzcỹkler: Fitoplankton, Alg, Devegeỗidi Baraj Gửlỹ.

Introduction
Devegeỗidi Dam Lake is located within the South-East
Anatolian Project (GAP) region. As there are no previous
publications on the algal composition of this region, the
results and evaluations reached in this study will
contribute to any future studies that are carried out
there.
It is expected that when the dam systems are
completed there will be a transition from the observed
drought to a humid and mild climate in the region. This
will bring important changes to the flora and fauna of the

region. In this study, phytoplankton species compositions
and of organismal abundance percentages, and the
physical and chemical properties of the dam system were
examined.
Devegeỗidi Dam Lake is located 20 km north-west of
Diyarbakr. The lake is 32.8 m deep and its active volume
is 211.86 hm3. The surroundings of the dam lake are
used for agricultural purposes (especially for cotton

production). In dry seasons, the water level sometimes
falls below 5 m.

457


A Study on Algae in Devegeỗidi Dam Lake

Materials and Methods
Stations were selected from 3 different points in an
area suitable for field work and with convenient
transportation.
1st Station: The reservoir and the deepest region.
2nd Station: Gỹleỗoba and Esentepe, between
settlement areas. Although the region enjoys absolute
protected area status, sewage and other wastes are
dumped into the dam lake.
3rd Station: This station is near the Boyalitafl region,
and the arm of the dam is also known as Baykan.
The study area and experimental stations are shown
in Figure 1.
This study was performed between April 1995 and
December 1996, although no samples were taken in
January, February, March of May 1996 due to bad
weather conditions. Monthly samples were collected
horizontally and vertically ( 250 m long and 1 m deep)
from these stations using a Hydro Bioss Kiel plankton net
(55 àm mesh size). Water samples were also taken with
1L plastic bottles from the surface. The water samples
were fixed with 4% formaldehyde. Taxonomic

identifications were performed and photographs of some

species were taken using a Nikon research microscope
according to the relevant sources (Huber & Pestalozzi,
1938, 1950; Bourrely, 1972; Prescott, 1975; Huber &
Pestalozzi, 1982; Korshikov, 1987; Krammer & LangeBertalot, 1991/a-b; Krammer & Lange-Bertalot, 1999/ab;) and the approximate density of species (Table 2 ) was
recorded (Odum, 1971).
=



CO 3 and HCO 3 values were determined by titration,
temperature and oxygen by a YS-O2-meter, pH and mV
with an NEL 890 pH meter and ammonium and ammonia
values with a HACH practical test kit. These parameters
were measured in situ. For the other analyses a HACH
model spectrophotometer was used. In addition, State
Hydraulic Works (DS.) reports covering 19921994
were used for comparative results (inorganic-N/PO4-P
ratio).

Results
The physical and chemical parameters of Devegeỗidi
Dam Lake are presented in Table 1. The average
parametric values of the 3 stations were measured
monthly.

Engani
region

Dipsavak
3rd Station
Boyaltafl

N

Devegeỗidi Dam Lake
1st Station

Gỹleỗoba
ầay stream

2nd Station

Hatun stream

TURKEY
Diyarbakr

Scale: 1/125000

Ayfle stream
Esentepe

KaracadaÔ region

Figure 1. Experimental stations in Devegeỗidi Dam Lake.

458

x

8.3

-78

7

2.6

0.6

0.65

8

19

x

0

x

x

x

x

x

x

x

Oxygen (ppm)

pH

mV

Nitrite (mg l-1)

Nitrate (mg l-1)

Ammonia (mg l-1)

Ammonium (mg l-1)

Hardness (Alm)

Turbidity (NTU)

Sulphate (mg l-1)

Carbonate (mg l-1)

Orthocarbonate (mg l-1)

Total chlorine (mg l-1)

Orthophosphate (mg l-1)

CaCO3-Ca (mg l-1)

Mg (mg l-1)

CaCO3-Ca (mg l-1)

Ca (mg l-1)

x: not determined

19

April

Temperature (°C)

MONTHS
PARAMETERS
May
x

x

x

x

x

x

0.16

0

31

11

8

0.34

0.32

0.4

1

-88

8.54

x

24

June
x

x

x

x

x

0.08

0.17

0

31

11

8

2.75

2.58

0.3

3

-62

8.59

x

27

July
x

x

x

x

x

0.13

0.18

0

32

23

7

0.73

0.68

0.6

1

-81

8.44

6.5

28

August
x

x

x

x

x

0.05

0.17

0

x

13

8

0.26

0.24

0.8

1

-68

8.29

5.8

25

1995

x

x

x

x

x

0.03

0.22

0

30

11

9

0.47

0.44

0.5

1

-71

8.19

6.9

21

September

YEARS

October
x

x

x

x

x

0.05

0.19

0

29

9

10

0.34

0.32

0.5

2

-69

8.27

8.2

17

November
67

170

47

191

0.8

0.03

0.25

0

30

6

11

0.65

0.6

0.8

6

-63

8.18

10.2

7

December
46

116

38

152

0.7

0.02

0.23

0

31

6

10

0.52

0.48

0.8

3

-37

7.85

9.4

3

Average
56.5

143

42.5

171.5

0.75

0.05

0.19

0

31 ± 0.5

12 ± 0.11

8.8 ± 0.03

0.74

0.69

0.8 ± 0.01

2.7

-69 ± 0.45

8.29

7.83

19

April
56

143

37

149

0.09

0.02

0.23

0

23

18

9

0.33

0.32

1,0

5

-56

8.17

11.8

13

June
x

x

x

x

1.36

0.08

0.23

0

24

14

9

0.56

0.52

0.7

1

-78

8.40

8.8

25

July
35

90

30

122

1.3

0.07

0.19

0

24

12

8

0.47

0.88

0,5

0

-50

8.23

6.0

26

August
51

127

34

138

1.65

0.09

0.20

0

25

17

8

0.37

1.05

0.2

1

-65

8.2

7

24

1996

53

132

36

144

1.0

0.06

0.19

0

25

10

8

0.60

1.12

0.2

1

-43

8.04

8.2

22

September

Table 1. The physical and chemical parameters of Devegeçidi Dam Lake.

October
53

132

37

149

1.16

0.06

0.18

0

29

14

8

0.60

1.12

0.4

2

-25

8.05

8.8

14

November
47

118

34

136

0.96

0.05

0.18

0

27

9

9

0.60

0.56

0,5

2

-39

8.09

10.2

13

December
57

143

39

159

1.0

0.6

0.20

0

27

8

10

0.39

0.36

0.7

3

-20

7.76

10

10

Average
50 ± 0.28

126 ± 0.42

35 ± 0.28

142

1.1 ± 0.04

0.06

0.20

0

26 ±. 0.5

12.8 ± 0.05

8.6 ± 0.02

0.49

0.74

0.5 ± 0.02

1.9 ± 0.03

-47

8.11

8.9 ± 0.05

18

T. BAYKAL, ‹. AÇIKGÖZ, K. YILDIZ, A. BEKLEYEN

459


A Study on Algae in Devegeỗidi Dam Lake

According to Sonaer (Jeffries & Mills, 1990), there is
an important relationship between pH, carbonate and
bicarbonate levels in a medium. If pH is 8, it is
carbonate, but if pH is 8, then there is bicarbonate
alkalinity. Only a few orthocarbonate measurements
(0.15 mg l-1 in the 1st station in May and July, in the 3rd
station in October 1995, and 0.28 mg l-1 in the 3rd station
in November 1995) were made in the dam lake.

A total of 112 taxa belonging to 5 divisions were
identified, with 29 species belonging to Cyanophyta, 5 to
Euglenophyta, 45 to Chlorophyta, 5 to Pyrrhophyta and
28 to Bacillariophyta in Devegeỗidi Dam Lake. The
approximate density and frequency of species identified in
the lake are presented in Table 2.

Discussion

Bacillariophyta species are generally widespread and
dominant in Turkey (ĩnal, 1985; Altuner & Aykulu,
1987; Obal & Elmac, 1992; Altuner & Gỹrbỹz, 1994;
Temel, 1997; Elmac & Obal, 1998; fiahin, 1998;
Akbulut & Akbulut, 2000) with the exception of lakes
such as Mogan (Obal, 1984) and Manisa-Marmara (CirikAltndaÔ 1982,1984), which have eutrophic
characteristics. Chlorophyta and Cyanophyta are
sometimes noted as dominant. In Devegeỗidi Dam Lake,
Cyanophyta was recorded as widespread and as the most
abundant organism.
Navicula pupula Kỹtz. (Figure 6c) and Amphora ovalis
Kỹtz., which grow faster in alkaline waters (Cirik & Cirik,
1991), were observed to be rare and few in number. In
addition, Fragilaria ulna (Nitzsch) Lange-Bertalot,
Navicula cryptocephala Kỹtz. and Surirella ovalis de Breb.,
known to inhabit water bodies affected by household and
industrial wastes (Cirik & Cirik, 1991), were rare, and
only a few F. ulna and S. ovalis specimens were
encountered in Devegeỗidi Dam Lake (especially at the 2nd
station). Although the dam lake is alkaline and is rich in
organic and inorganic wastes, these species were almost

unnoticeable. This condition between interspecies could
be allelopathic.
When there is excess growth of blue-green algae in a
lake, the growth of diatoms is inhibited. This is a
characteristic of eutrophic lakes (Temel, 1996). Between
summer (especially June and July) and autumn,
Microcystis aeruginosa Kỹtz. (Figures 2a,b).,

460

Aphanizomenon floss-aquae (L.) Ralfs (Figure 3a) and
sometimes Anabaena spiroides Kleb. (Figure 2f)
belonging to the Cyanophyceae were found to be
widespread and abundant in phytoplankton in the lake. In
addition, except for Aulacoseira granulata (Ehr.)
Simonsen (Figure 5f), the abundance of diatom species
was low.
F. ulna, A. granulata var. angustissima Muller (Figure
5g) (Cox, 1996), A. floss-aquae, A. spiroides and M.
aeruginosa from the Cyanophyceae are the characteristic
species in eutrophic waters (Cirik & Cirik, 1991).
M. aeruginosa, found in the phytoplankton of
Devegeỗidi Dam Lake and which often caused algal
blooms in the lake, was also found in Suat UÔurlu Dam
Lake (Yazc & Gửnỹlol, 1994), Akflehir Lake (Elmac &
Obal, 1998), KurtboÔaz Dam Lake (Aykulu & Obal,
1981), Mogan Lake (Obal, 1984), Karamk Lake
(Gửnỹlol & Obal, 1986) and the Bafra Balk Lakes
(Gửnỹlol & ầomak, 1992) and frequently showed
excessive growth. It was observed that 18-22 C was the

optimum temperature range for the growth of M.
aeruginosa (Lund, 1965). In some seasons Devegeỗidi
Dam Lake possesses this optimum temperature range
(Table 1). Ceratium hirundinella (O.F.Muell.) Duj. (Figure
5e), Pediastrum Boryanum (Turp.) Meneghini and
Staurastrum sp. as mesotrophic species and the centric
diatoms Cyclotella sp. (especially Cyclotella ocellata
Pantocsek (Figure 5) are also known to be transitional
from oligotrophic to eutrophic species (Round, 1956). A.
granulata was dominant among centric diatoms. Species
of Cyclotella were rare and very few in number in
Devegeỗidi Dam Lake. This situation showed that the lake
has mesotrophic characteristics and that it is changing
into a eutrophic lake. A. granulata thrives best in a low
nitrogen medium because it prefers waters which have a
low nitrate/phosphate ratio for growth. In terms of
orthophosphate values (0.4 mg l-1 in the 2nd station in
April and October 1996 and 2.6 mg l-1 in the 3rd station
in October 1996), Devegeỗidi Dam Lake is in the 3rd class
of water quality regulations (Tỹrkiye ầevre Vakf Yayn,
1992). In some months, as a result of increases in the
amount of phosphate, the water acquires the properties
of the 4th class (very polluted). In terms of the values for
nitrite-N, the water is in the 4th class. According to the
OECD, in situations where ratio of the total amount of
nitrogen divided by the total amount of phosphate is


A: Rare 10-20%

B: Occasional 21-40%

C

A

A

A

A

C: Frequent 41-60%

SPECIES
CYANOPHYTA
Chroococcales
Chroococcus dispersus (Keissl.) Lemm.
Chroococcus minor (Kütz.) Naeg.
Chroococcus minutus (Kütz.) Naeg.
Chroococcus turgidus (Kütz.) Naeg.
Aphanocapsa elachista West & West
Aphanocapsa endophytica G.M.Smith
Aphanocapsa Grevillei (Hass.) Raben.
Microcystis aeruginosa Kütz. (Figure 2a,b)
Microcystis marginata (Men.) Kg.
Merismopedia elegans A.Braun
Holopedia geminata Lagerh. (Figure 2c)
Holopedia irregularis Lagerh.
Aphanothece nidulans var. endophytica West & West

Coelasphaerium Naegalianum Unger
Gomphosphaeria aponina Kütz.
Gomphosphaeria lacustris Chodat
Hormogonales
Spirulina major Kütz. (Figure 2d)
Oscillatoria formosa Bory
Oscillatoria limnetica Lemm.
Oscillatoria minima Gicklhorn
Phormidium mucicola Naum. & Huber - Pestalozzi
Phormidium tenue (Menegh.) Gomont
Lyngbya sp.
Anabaena aequalis Borge
Anabaena affinis Lemm. (Figure 2e)
Anabaena cylindrica Lemm.
Anabaena spiroides Kleb. (Figure 2f)
Aphanizomenon floss – aquae (L.) Ralfs (Figure 3a)
Gleotrichia sp.
EUGLENOPHYTA
Euglenales
Euglena charchowiensis Swir. (Figure 3b)
Euglena spiroides Lemm.
Euglena spirogyra Ehr.
Phacus longicauda (Ehr.) Duj.
Phacus orbicularis Huebner (Figure 3c)
CHLOROPHYTA
Volvocales
Pandorina morum (Muell.) Bory

II

STATIONS

I

April 95

MONTHS

A

I

A

A

C

C

C
A

II

C

III

D: Codominant 61-80%

A

A

III

May 95

C
A

A

E

E: Dominant 81-100%

B

A
A
A

A

B

C

C

I

A

A

D

C

B

III

A

A

A
E

II

B

A

A

D

C

I

June 95

A

C

A
A

A

C
E

C

D

II

July 95
III

B

C

A

D

C

I

A

C
C

B

B
D

A

C

II

August 95

B

A

B

C

A

B

III

A

B
B

C

A

C
B

C

A

A

A

A
A

D

C

B

II

C

B

I

III

September 95

Table 2. The approximate density and frequency of species identified in Devegeçidi Dam Lake.

A
A

A

B

B
C

A

C

D

I

II

October 95

B

B

A

D

III

A

A

D

A

I

A

B

A

C

B

II

A

A
B

C

A

III

November 95

A

A

C

A

I

II

III

December 95

T. BAYKAL, ‹. AÇIKGÖZ, K. YILDIZ, A. BEKLEYEN

461


462
III

A: Rare 10-20%

B: Occasional 21-40%

C: Frequent 41-60%

A

I

A

A

A

A

A

A
A

A

A

C

B

II

June 95

A

A

A

B
A

A

III

I

A

A

B

A

B

E: Dominant 81-100%

A

C

B
B

I

B

B
B

A

III

C

A
A

A

A

II

May 95

D: Codominant 61-80%

SPECIES
Eudorina elegans Ehr. (Figure 3d)
Oedogoniales
Oedogonium sp.
Chaetophorales
Chaetopeltis orbicularis Berthold
Chlorococcales
Golenkinia radiata (Chod.) Wille
Macrochloris dissecta (Korsh.) Meneg.
Palmellocystis planctonica Korsh. (Figure 3e)
A
Pediastrum Boryanum (Turp.) Meneghini
B
Pediastrum dublex Meyen
B
Pediastrum dublex var. clathratum (A.Braun)
Lagerheim (Figure 3f)
A
Pediastrum dublex var. cohaerens (Bohlin)
A
Pediastrum simplex (Meyen) Lemm. (Figure 3g)
Pediastrum simplex var. duodenarium (Bailey) Raben.
(Figure 4a)
Coelastrum microporum Naeg. (Figure 4b)
Dictyosphaerium Ehrenbergianum Naegeli
Dictyosphaerium pulchellum Wood (Figure 4c)
B

Oocystis Borgei Snow
A
Oocystis solitaria Wittrock
Lagerheima sp.
Ankistrodesmus falcatus (Corda) Ralfs
Ankistrodesmus longissimus (Lemm.) Wille (Figure 4d)
Ankistrodesmus longissimus var. acicularis (Chod.) Brunnth
Dactylococcopsis acicularis Lemmermann
Dactylococcopsis irregularis G.M.Smith
Selenastrum Bibraianum Reinsch
Kirchneriella elongata G.M.Smith
Kirchneriella lunaris (Kirch.) Moebius
Coenocococcus planktonicus Korsh. (Figure 4e)
Tetraedron caudatum var. longispinum Lemm.
Tetraedron minumum (A.Braun) Hansgirg
Hyaloraphidium arcuatum Korsh.
B
Hyaloraphidium contortum Pasch. et Korsh.
Hyaloraphidium moinae Korsh.
Hyaloraphidium rectum Korsh.
Scenedesmus acuminatus (Lagerh.) Chod.
A
Scenedesmus arcuatus var. platydisca G.M.Smith (Figure 4f)
Scenedesmus bijuga (Turp.) Lagerheim
A
Scenedesmus quadricauda (Turp.) de Breb in de Breb & Godey (Figure 4g)
Scenedesmus quadricauda var. longispina (Chod.) G.M.Smith
Scenedesmus quadricauda var. Westii G.M.Smith
Crucigenia Lauterbornii Schmidle

II

STATIONS

I

April 95

MONTHS

A

C

C

II

July 95
III

A

A

B

A

I

A

B

A

II

August 95

A

III

A

A
A

B

B

I

A

A

C

A

A
A

C

B

B

II

A

III

September 95

A

A

C

C
A

A

I

II

October 95

Table 2. The approximate density and frequency of species identified in Devegeçidi Dam Lake (continued).

A

A

A

A

A

III

A

I

A

A

B

A

A

II

A

B

B

B

B

III

November 95

A

I

II

III

December 95

A Study on Algae in Devegeçidi Dam Lake


A: Rare 10-20%

B: Occasional 21-40%

C: Frequent 41-60%

A

A

B

A

C

D

5d)
A

A

II

SPECIES
Desmidiales
Cosmarium reniforme (Ralfs) Archer (Figure 5a)
Cosmarium witrockii Lundell
Staurastrum pungens Breb. (Figure 5b)
S. sebaldi var. ornatum fo. elongata Krieg. et Bourr. (Figure 5c)
PYRRHOPHYTA
Peridiniales
Glenodinium sp.
Peridinium cinctum (Muell.) Ehr.
Peridinium cinctum var. tuberosum (Meuiner) Lindemann (Figure
Peridinium Willei Huitfeld – Kaas
Ceratium hirundinella (O.F.Muell.) Duj. (Figure 5e)
BACILLARIOPHYTA
Centrales
Melosira varians C.A.Agardh
Aulacoseira granulata (Ehr.) Simonsen (Figure 5f)
Aulacoseira granulata var. angustissima Muller (Figure5g)
Aulacoseira ambigua (Grun.) Simonsen (Figure 5h)
Cyclotella meneghiniana Kütz.
Cyclotella ocellata Pantocsek (Figure 5›)
Stephanodiscus rotula (Kütz.) Hendey (Figure 5j)
Cyclostephanos dubius (Fricke) Round (Figure 6a)
Thalassiosira weissflogii (Grunow) Fryxell and Hasle
Pennales
Navicula bacillum Ehr. (Figure 6b)
Navicula pupula Kütz. (Figure 6c)
Cymbella cymbiformis Agardh
Cymbella aequalis W.Smith
Cymbella ventricosa Kütz. (Figure 6d)

Gyrosigma acuminatum (Kütz.) Rabh. (Figure 6e)
Amphora ovalis Kütz.
Nitzschia sigmoidea (Ehr.) W.Smith
Nitzschia gracilis Hantzsch
Nitzschia acicularis W.Smith
Nitzschia closterium (Ehr.) W.Smith
Cymatopleura solea (de Breb.) W.Smith
Cymatopleura elliptica (de Breb.) W.Smith (Figure 6f)
Surirella ovalis de Breb.
Surirella robusta var. splendida (Ehr.) Van Heurck (Figure 6g)
Surirella tenera Gregory
Fragilaria ulna (Nitzsch) Lange-Bertalot
Fragilaria ulna var. acus (Nitzsch) Lange-Bertalot
Fragilaria ulna var. angustissima (Nitzsch) Lange-Bertalot

April 95

STATIONS

I

MONTHS
I

B

A
A

A

A

A

A

A

III

A
A

A

II

May 95

D: Codominant 61-80%

A

III

A
B

B

C

II

June 95

A

A
C
A

A

III

I

A
B
B

A
B
A

E: Dominant 81-100%

A
A

I

A
C

A

A

A
C
B

A

II

July 95

A

III

A
B

C

B

B

B
B

A

I

A
C

B
B

II

August 95

B

A
A

A
A
A

A

III

A
A

A
A
A

A
A

I

A

A
A

A

A

A

C
B

A
B

A

A

II

A

III

September 95

B
D
B
B

B
C

A

A

I

A

II

October 95

Table 2. The approximate density and frequency of species identified in Devegeçidi Dam Lake (continued).

C

A

A

III

A
A

I

A

II

B

A

C

III

November 95

A

C

A

I

II

III

December 95

T. BAYKAL, ‹. AÇIKGÖZ, K. YILDIZ, A. BEKLEYEN

463


464
A

III

E

I

D

II

C

III

C

I

II

E

I

E

II

E

III

E

I

II

October 96
III

A

I

B

II

III

November 96
II

III

41

Frequency %

A

A

A

A

A

A

A

C

A

A

D

A
A

A

A: Rare 10-20%

B: Occasional 21-40%

Phacus orbicularis Huebner

A

A

C: Frequent 41-60%

D: Codominant 61-80%

E: Dominant 81-100%

A

A

6

35

A

12

6

94

Phacus longicauda (Ehr.) Duj.

A

A

6

B

24

A

C

Euglena spirogyra Ehr.

A

A

Euglena spiroides Lemm.

Euglena charchowiensis Swir.

Euglenales

EUGLENOPHYTA

Gleotrichia sp.

C

Anabaena spiroides Kleb.

Aphanizomenon floss – aquae (L.) Ralfs

6
35

Anabaena cylindrica Lemm.

12
24

Anabaena affinis Lemm.

A

Anabaena aequalis Borge

6
12

Lyngbya sp.

35
C

65

Phormidium tenue (Menegh.) Gomont

A

Phormidium mucicola Naum. & Huber-Pestalozzi

A

Oscillatoria limnetica Lemm.

6
12
18

A

Oscillatoria formosa Bory

6

29

Oscillatoria minima Gicklhorn

A

Spirulina major Kütz.

Hormogonales

Gomphosphaeria lacustris Chodat

Gomphosphaeria aponina Kütz.

6
18

Coelasphaerium Naegalianum Unger
A

Aphanothece nidulans var. endophytica West & West

6

12

12

12

A

A

Holopedia irregularis Lagerh.

Holopedia geminata Lagerh.

Merismopedia elegans A.Braun

100

E

Microcystis marginata (Men.) Kg.

E

A

Microcystis aeruginosa Kütz.
A

A

Aphanocapsa Grevillei (Hass.) Raben.
E

6
18

Aphanocapsa endophytica G.M.Smith

6
6

Aphanocapsa elachista West & West

A

A

I

December 96

Chroococcus turgidus (Kütz.) Naeg.

E

E

III

September 96

59

E

II

August 96

Chroococcus minutus (Kütz.) Naeg.

I

July 96

18

E

III

June 96

Chroococcus minor (Kütz.) Naeg.

Chroococcus dispersus (Keissl.) Lemm.

Chroococcales

CYANOPHYTA

A

II

I

STATIONS

SPECIES

April 96

MONTHS

Table 2. The approximate density and frequency of species identified in Devegeçidi Dam Lake (continued).

A Study on Algae in Devegeçidi Dam Lake


A: Rare 10-20%

B: Occasional 21-40%

A

A

A

A

A
A

A

III

D: Codominant 61-80%

A

A

C

II

A

I

A

A

III

June 96

B
C
C

A

A

C: Frequent 41-60%

SPECIES
CHLOROPHYTA
Volvocales
Pandorina morum (Muell.) Bory
Eudorina elegans Ehr.
Oedogoniales
Oedogonium sp.
Chaetophorales
Chaetopeltis orbicularis Berthold
Chlorococcales

Golenkinia radiata (Chod.).Wille
Macrochloris dissecta (Korsh.) Meneg.
Palmellocystis planctonica Korsh.
Pediastrum Boryanum (Turp.) Meneghini
Pediastrum dublex Meyen
Pediastrum dublex var. clathratum (A.Braun) Lagerheim
Pediastrum dublex var. cohaerens (Bohlin)
Pediastrum simplex (Meyen) Lemm.
Pediastrum simplex var. duodenarium (Bailey) Raben.
Coelastrum microporum Naeg.
Dictyosphaerium Ehrenbergianum Naegeli
Dictyosphaerium pulchellum Wood
Oocystis Borgei Snow
Oocystis solitaria Wittrock
Lagerheima sp.
Ankistrodesmus falcatus (Corda) Ralfs
Ankistrodesmus longissimus (Lemm.) Wille
Ankistrodesmus longissimus var. acicularis (Chod.) Brunnth
Dactylococcopsis acicularis Lemmermann
Dactylococcopsis irregularis G.M.Smith
Selenastrum Bibraianum Reinsch
Kirchneriella elongata G.M.Smith
Kirchneriella lunaris (Kirch.) Moebius
Coenococcus planktonicus Korsh.
Tetraedron caudatum var. longispinum Lemm.
Tetraedron minumum (A.Braun) Hansgirg
Hyaloraphidium arcuatum Korsh.
A
Hyaloraphidium contortum Pasch. et Korsh.
A

Hyaloraphidium moinae Korsh.
Hyaloraphidium rectum Korsh.
Scenedesmus acuminatus (Lagerh.) Chod.
Scenedesmus arcuatus var. platydisca G.M.Smith
Scenedesmus bijuga (Turp.) Lagerheim
Scenedesmus quadricauda (Turp.) de Breb in de Breb & Godey
Scenedesmus quadricauda var. longispina (Chod.) G.M.Smith
Scenedesmus quadricauda var. Westii G.M.Smith

II

STATIONS

I

April 96

MONTHS

A
A

A

C

C

A

II

A

III

A

II

August 96

A

I

E: Dominant 81-100%

A

A

A

C

A
A
A

I

July 96

A

A

A

A

A
A
C

C

III

A

A

A
A

A

A

D

B
B

I

A

A
A

C

A

II

A

B

B

III

September 96

A

A

C

C

A

I

II

October 96
III

B

A

A

A

I

A

II

III

November 96

Table 2. The approximate density and frequency of species identified in Devegeçidi Dam Lake (continued).

B

A

A
A

A

I

A
A

II

III

December 96

6
6
6
41

65
59
18
76
41
47
6
24
12
6
6
12
47
6
18
6
6
12
6
6
6
59
35
12
18
6
18
6
18
65

12
6

6

6

12
18

Frequency %

T. BAYKAL, ‹. AÇIKGÖZ, K. YILDIZ, A. BEKLEYEN

465


466

A: Rare 10-20%

B: Occasional 21-40%

A
A
A

B

A

B
B

A

A

A
A

A

A
A

A

A

A

B
C

A

C: Frequent 41-60%

SPECIES

Crucigenia Lauterbornii Schmidle
Desmidiales
Cosmarium reniforme (Ralfs) Archer
Cosmarium witrockii Lundell
Staurastrum pungens Breb.
S. sebaldi var. ornatum fo. elongata Krieg. et Bourr.
PYRRHOPHYTA
Peridiniales
Glenodinium sp.
Peridinium cinctum (Muell.) Ehr.
Peridinium cinctum var. tuberosum (Meuiner) Lindemann
Peridinium Willei Huitfeld – Kaas
Ceratium hirundinella (O.F.Muell.) Duj.
BACILLARIOPHYTA
Centrales
Melosira varians C.A.Agardh
Aulacoseira granulata (Ehr.) Simonsen
Aulacoseira granulata var. angustissima Müller
Aulacoseira ambigua (Grun.) Simonsen
Cyclotella meneghiniana Kütz.
Cyclotella ocellata Pantocsek
Stephanodiscus rotula (Kütz) Hendey
Cyclostephanos dubius (Fricke) Round
Thalassiosira weissflogii (Grunow) Fryxell and Hasle
Pennales
Navicula bacillum Ehr.
Navicula pupula Kütz
Cymbella cymbiformis Agardh
Cymbella aequalis W.Smith
Cymbella ventricosa Kütz.

Gyrosigma acuminatum (Kütz.) Rabh.
Amphora ovalis Kütz.
Nitzschia sigmoidea (Ehr.) W.Smith
Nitzschia gracilis Hantzsch
Nitzschia acicularis W.Smith
Nitzschia closterium (Ehr.) W.Smith
Cymatopleura solea (de Breb.) W.Smith
Cymatopleura elliptica (de Breb.) W.Smith
Surirella ovalis de Breb.
Surirella robusta var. splendida (Ehr.) Van Heurck
Surirella tenera Gregory
Fragilaria ulna (Nitzsch) Lange-Bertalot
Fragilaria ulna var. acus (Nitzsch) Lange-Bertalot
Fragilaria ulna var. angustissima (Nitzsch) Lange-Bertalot

II

STATIONS

I

April 96

MONTHS
I

B

B

B

A

A
A

II

III

D: Codominant 61-80%

A

C

A

A

III

June 96
II

A

III

B

B

B

A

A

E: Dominant 81-100%

A

A
A

D
C
A

A

A

A
A
A
A
A

A

C
D
C

B

B

A
A

I

A

III

A

A

A
A

II

August 96

A
A

A

I

July 96

A

C

E

B

B
A

A
A

I

A

C

E

B

A

II

A

C

B

A

A

III

September 96

A

C

D

A

A

A
A

I

II

October 96
III

A

A

A

A

I

II

III

November 96

Table 2. The approximate density and frequency of species identified in Devegeçidi Dam Lake (continued).

A

A
A

A
A

B

I

II

III

December 96

6
6
6
6
6
6
18
6
6
24
53
12

6
6
6
6
24
35
35

12
82
41
35
24
12
6
12
12

6
29
65
47
65

6
53
88
6

6

Frequency %

A Study on Algae in Devegeçidi Dam Lake


T. BAYKAL, ‹. AÇIKGÖZ, K. YILDIZ, A. BEKLEYEN

Figure 2. a,b. Microcystis aeruginosa, c. Holopedia geminata, d. Spirulina major e. Anabaena affinis, f. A. spiroides (Scale 10 µm).

467


A Study on Algae in Devegeçidi Dam Lake

Figure 3. a. Aphanizomenon floss–aquae, b. Euglena charchowiensis, c. Phacus orbicularis, d. Eudorina elegans, e. Palmellocystis planctonica, f.
Pediastrum dublex var. clathratum, g. P. simplex (Scale 10 µm).

468


T. BAYKAL, ‹. AÇIKGÖZ, K. YILDIZ, A. BEKLEYEN

Figure 4. a. Pediastrum simplex var. duodenarium, b. Coelastrum microporum, c. Dictyosphaerium pulchellum, d. Ankistrodesmus longissimus, e.
Coenococcus planktonicus, f. Scenedesmus arcuatus var. platydisca, g. S. quadricauda (Scale 10 µm).

greater than 15, it is accepted that nitrogen is not the
limiting factor. In calculations of the inorganic-N/PO4-P

ratio near the 1st station, the average and probable

percentage values were 25.34 and 16.67, respectively.

469


A Study on Algae in Devegeçidi Dam Lake

Figure 5. a. Cosmarium reniforme, b. Staurastrum pungens, c. S. sebaldi var. ornatum fo. elongata, d. Peridinium cinctum var. tuberosum, e.
Ceratium hirundinella, f. Aulacoseira granulata, g. A. granulata var. angustissima, h. A. ambigua, i. Cyclotella ocellata, j. Stephanodiscus
rotula (Scale 10 µm).

470


T. BAYKAL, ‹. AÇIKGÖZ, K. YILDIZ, A. BEKLEYEN

Figure 6. a. Cyclostephanos dubius, b. Navicula bacillum, c. N. pupula, d. Cymbella ventricosa, e. Gyrosigma acuminatum, f. Cymatopleura elliptica,
h. Surirella robusta var. splendida (Scale 10 µm).

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