Seasonal variations in phytoplankton community of Manyas Reservoir (Balıkesir, Turkey) in relation to certain physical and chemical variables

Kemal Çelik; Mahide Balaban Karasakal

doi:10.26881/oahs-2026.1.05

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Seasonal variations in phytoplankton community of Manyas Reservoir (Balıkesir, Turkey) in relation to certain physical and chemical variables

Oceanological and Hydrobiological Studies

Volume 55 (2026): Issue 1 (March 2026)

By: Kemal Çelik and Mahide Balaban Karasakal

Open Access

|Mar 2026

Figures & Tables

Map of Manyas Reservoir and the locations of sampling stations.

The seasonal distribution of the dominant phytoplankton species (abbreviations: N. rad: Navicula radiosa; P. simp: Pediastrum simplex; D. com: Desmodesmus communis; D. prot: Desmodesmus protuberans; N. lorn: Nitzschia lorenziana; T. vol: Trachelomonas volvocina; F. cap: Fragilaria capucina; C. men: Cyclotella meneghiniana and U. acu: Ulnaria acus).

The CCA diagram (abbreviations: P. simp: Pediastrum simplex; D. com: Desmodesmus communis; D. prot: Desmodesmus protuberans; N. lorn: Nitzschia lorenziana; T. vol: Trachelomonas volvocina; F. cap: Fragilaria capucina and U. acu: Ulnaria acus). CCA, canonical correspondence analysis; EC, electrical conductivity; DO, dissolved oxygen; TP, total phosphorus; TSS, total suspended solids.

The list of phytoplankton species identified in Manyas Reservoir_

Heterokontophyta
Anomoeoneis sphaerophora Pfitzer
Aulacoseira granulata (Ehrenberg) Simonsen
Cyclotella meneghiniana Kützing
Diatoma tenuis C. Agardh
Diatoma vulgaris Bory
Fragilaria capucina Desmazières
Fragilaria crotonensis Kitton
Gomphonema caperatum Ponader & Potapova
Gyrosigma attenuatum (Kützing) Rabenhorst
Luticola ventricosa (Kützing) D. G. Mann
Melosira varians C. Agardh
Meridion circulare (Greville) C. Agardh
Navicula radiosa Kützing
Navicula trivialis Lange-Bertalot
Nitzschia amphibia Grunow
Nitzschia gracilis Hantzsch.
Nitzschia homburgiensis Lange-Bertalot
Nitzschia lorenziana Grunow
Nitzschia sigmoidea (Nitzsch) W. Smith
Nitzschia thermalis (Ehrenberg) Auerswald
Pinnularia abaujensis var. linearis (Hustedt) R. M. Patrick
Pinnularia biceps W. Gregory
Pinnularia polyonca (Brébisson) W. Smith
Stephanodiscus niagarae Ehrenberg
Stephanodiscus reimeri Theriot & Stoermer
Stephanodiscus rotula (Kützing) Hendey
Tetracyclus rupestris (Kützing) Grunow
Thalassiosira angustelineata (A.W. F. Schmidt) G. Fryxell & Hasle
Trinacria ventricosa Grove & Sturt
Ulnaria acus Kützing
Ulnaria ulna (Nitzsch) Ehrenberg
Chlorophyta
Actinastrum hantzschii Lagerheim
Coelastrum proboscideum Bohlin
Comasiella arcuata (Lemm.) E. Hegewald, M. Wolf, Al. Keller, Friedl & Krienitz
Cymbella subturgidula Krammer
Desmodesmus abundans (Kirchner) E. Hegewald
Desmodesmus communis (E. Hegewald) E. Hegewald
Desmodesmus insignis (West & G. S. West) E. Hegewald
Desmodesmus protuberans (F. E. Fritsch & M. F. Rich) E. Hegewald
Dictyosphaerium ehrenbergianum Nägeli
Pediastrum boryanum (Turpin) Meneghini
Pediastrum simplex Meyen
Scenedesmus acuminatus (Lagerheim) Chodat
Scenedesmus ecornis (Ehrenberg) Chodat
Sphaerocystis schroeteri Chodat
Tetraёdron caudatum (Corda) Hansgirg
Tetraёdron minimum (A. Braun) Hansgirg
Cyanobacteria
Aphanizomenon flos-aquae var. klebahnii Elenkin
Chroococcus turgidus (Kützing) Nägeli
Leptolyngbya boryana (Gomont) Anagnostidis & Komárek
Cyanobacteria
Merismopedia elegans A. Braun ex Kützing
Oscillatoria limosa C. Agardh ex Gomont
Oscillatoria tenuis C. Agardh ex Gomont
Euglenozoa
Trachelomonas armata (Ehrenberg) F. Stein
Trachelomonas gracilis (Playfair) Deflandre
Trachelomonas volvocina (Ehrenberg) Ehrenberg
Charophyta
Mougeotia ventricosa (Wittrock) Collins
Staurastrum crenulatum var. britannicum E. Messikommer
Miozoa
Ceratium hirundinella (O. F. Müller) Dujardin

Summary statistics for CCA run on the standardized values of physicochemical measurements_

Axes	1	2	3	4	Total inertia
Eigenvalues	0.13	0.03	0.02	0.01	0.28
Species–environment correlations	0.88	0.84	0.89	0.74
Cumulative percent variation in species data	48.3	59.1	65.1	67.9
Cumulative percent variation in species–environment relationships	68.8	84.1	92.6	96.6
Sum of all eigenvalues					0.64
Sum of all canonical eigenvalues					0.47

The standardized values of water temperature (T, °C), (DO, mg · L−1), (EC, μs · cm−1), pH, (TSS, mg · L−1), (SD, m), (TP, mg · L−1) nitrate-nitrogen (NO3-N, mg · L−1) and (TN, mg · L−1)_ The pH and NO3-N values are corrected to realistic ecological ranges_

Variable	Maximum	Minimum	Mean	Std. Dev.
T	20.42	6.43	81.82	5.59
pH	9.5	8.2	8.5	0.65
EC	312	126	228.80	77.99
SD	2.04	0.44	1.26	0.51
DO	8.34	1.33	4.98	2.35
TSS	2.3	1.80	1.27	0.52
NO₃-N	1.15	0.20	0.675	0.47
TN	2.69	1.612	1.69	0.43
TP	0.22	0.41	0.33	0.05

The results of ANOVA test run on the standardized values of water temperature (T, °C), (DO, mg · L−1), (EC, μs · cm−1), pH, (TSS, mg · L−1), (SD, m), (TP, mg · L−1) nitrate-nitrogen (NO3-N, mg · L−1) and (TN, mg · L−1)_

Comparisons between the stations
Parameter	Sum of squares	df	Mean square	F	Sig. (p)
T	3.6	2	1.8	0.01	0.99
DO	56.4	2	28.2	8.34	0.01
EC	13.3	2	63.6	0.99	0.39
pH	5.95	2	2.97	0.93	0.41
TSS	870	2	435	3.2	0.05
SD	213	2	106	4. 9	0.02
TP	0.02	2	0.01	4.00	0.04
NO₃-N	0.94	2	0.45	0.04	0.96
TN	0.74	2	0.37	1.52	0.25

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DOI: https://doi.org/10.26881/oahs-2026.1.05 | Journal eISSN: 1897-3191 | Journal ISSN: 1730-413X

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Language: English

Page range: 62 - 72

Submitted on: Nov 19, 2025

Accepted on: Feb 3, 2026

Published on: Mar 11, 2026

Published by: University of Gdańsk

In partnership with: Paradigm Publishing Services

Publication frequency: 4 issues per year

Keywords:

CCA,

cosmopolitan species,

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© 2026 Kemal Çelik, Mahide Balaban Karasakal, published by University of Gdańsk
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

Volume 55 (2026): Issue 1 (March 2026)

Seasonal variations in phytoplankton community of Manyas Reservoir (Balıkesir, Turkey) in relation to certain physical and chemical variables

Figures & Tables

Figure 1

Figure 2

Figure 3

The list of phytoplankton species identified in Manyas Reservoir_

Summary statistics for CCA run on the standardized values of physicochemical measurements_

The standardized values of water temperature (T, °C), (DO, mg · L−1), (EC, μs · cm−1), pH, (TSS, mg · L−1), (SD, m), (TP, mg · L−1) nitrate-nitrogen (NO3-N, mg · L−1) and (TN, mg · L−1)_ The pH and NO3-N values are corrected to realistic ecological ranges_

The results of ANOVA test run on the standardized values of water temperature (T, °C), (DO, mg · L−1), (EC, μs · cm−1), pH, (TSS, mg · L−1), (SD, m), (TP, mg · L−1) nitrate-nitrogen (NO3-N, mg · L−1) and (TN, mg · L−1)_

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