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Spatio-temporal variation in the distribution and abundance of marine cladocerans in relation to environmental factors in a productive lagoon (Güllük Bay, SW Aegean Sea, Turkey) Cover

Spatio-temporal variation in the distribution and abundance of marine cladocerans in relation to environmental factors in a productive lagoon (Güllük Bay, SW Aegean Sea, Turkey)

Oceanological and Hydrobiological Studies
Volume 49 (2020): Issue 4 (December 2020)
By: Nurçin Killi  
Open Access
|Nov 2020

Figures & Tables

Figure 1

Sampling locations in Güllük Bay. Sampling sites: 1 – Lagoon entrance 1; 2 – Lagoon entrance 2; 3 – Kıyıkışlacık
Sampling locations in Güllük Bay. Sampling sites: 1 – Lagoon entrance 1; 2 – Lagoon entrance 2; 3 – Kıyıkışlacık

Figure 2

Mean temperature and salinity values in the study area by months
Mean temperature and salinity values in the study area by months

Figure 3

Mean dissolved oxygen (DO) and Chl a values in the study area by months
Mean dissolved oxygen (DO) and Chl a values in the study area by months

Figure 4

Mean nitrate values in the study area by months
Mean nitrate values in the study area by months

Figure 5

Mean abundance values of Cladocera species according to the seasons
Mean abundance values of Cladocera species according to the seasons

Figure 6

Constrained ordination relating cladoceran data to predictor variables. Distance-based redundancy analysis (dbRDA) of zero-adjusted Bray-Curtis dissimilarities calculated from square-root transformed abundance of four cladocerans vs water temperature and dissolved oxygen, identified as the best two-variable model using the AICc selection criterion. Colors denote the three sampling locations in Güllük Bay
Constrained ordination relating cladoceran data to predictor variables. Distance-based redundancy analysis (dbRDA) of zero-adjusted Bray-Curtis dissimilarities calculated from square-root transformed abundance of four cladocerans vs water temperature and dissolved oxygen, identified as the best two-variable model using the AICc selection criterion. Colors denote the three sampling locations in Güllük Bay

Studies on marine cladocerans in Turkey

ReferenceStudy areaCladocera species
Tarkan 2000GökçeadaEvadne nordmanni, Penilia avirostris, Evadne spinifera
Tarkan et al. 2001GökçeadaEvadne nordmanni, Penilia avirostris, Evadne spinifera, Pseudevadne tergestina, Podon intermedius
Toklu-Alıçlı & Sarıhan 2003İskenderun BayPenilia avirostris, Pseudevadne tergestina, Evadne spinifera
Aker & Özel 2006İzmir BayEvadne nordmanni, Pseudevadne tergestina, Evadne spinifera, Penilia avirostris, Pleopis polyphemoides
Büyükateş & İnanmaz 2007Kepez Harbor, Dardanelles StraitPleopis polyphemoides, Evadne nordmanni, Penilia avirostris
İşinibilir 2008Güllük BayPseudevadne tergestina, Evadne spinifera, Penilia avirostris, Podon leuckartii, Pleopis polyphemoides
Büyükateş & İnanmaz 2010Dardanelles Kepez Harbor, StraitPleopis polyphemoides, Evadne nordmanni, Penilia avirostris
Gülşahin & Tarkan 2012Gökova BayPenilia avirostris, Evadne spinifera, Pseudevadne tergestina, Pleopis polyphemoides, Podon intermedius
Terbıyık Kurt & Polat 2014İskenderun BayPenilia avirostris, Pseudevadne tergestina, Evadne spinifera, Pleopis polyphemoides, Podon intermedius
Toklu-Alıçlı et al. 2014Gulf Marmara of Erdek, SeaEvadne spinifera, Pleopis polyphemoides, Penilia avirostris
Toklu-Alıçlı & Sarıhan 2016İskenderun BayEvadne spinifera, Pseudevadne tergestina, Penilia avirostris, Podon polyphemoides
Terbıyık Kurt & Polat 2017İskenderun BayEvadne spinifera, Penilia avirostris, Pleopis polyphemoides, Podon schmackeri, Podon intermedius, Pseudevadne tergestina
Terbıyık Kurt et al. 2018İskenderun BayPenilia avirostris, Evadne spinifera, Pseudevadne tergestina, Evadne nordmanni, Pleopis polyphemoides, Podon intermedius

PERANOVA results with regard to differences in the abundance of Cladocera species according to season and location_ Statistically significant (and ecologically relevant) effects are marked in bold (α = 0_05), including those for posteriori pairwise comparisons (# = permutational value based on 9999 permutations)_ See also Figure 6

Source of variationdfMSF#t#p#
Season317.295.07 0.0001
Spring vs Summer 2.780.0002
Spring vs Autumn 1.940.0357
Spring vs Winter 2.230.0436
Summer vs Autumn 2.260.0014
Summer vs Winter 2.390.0102
Autumn vs Winter 1.500.1669
Sampling location20.690.20 0.9914
Season × sampling location60.510.15 1.0000
Residual213.41

Results of DISTLM analysis on physicochemical variables

variableMarginal testsSequential tests
SS (trace)Pseudo-FpSS (trace)Pseudo-Fp
T102496.81120.0002102496.81120.0001
DO3153.31.81880.11784521.33.21980.0159
Chl a71554.45900.00272137.31.54990.1852
NO32797.81.60320.17471041.90.74900.5612
Salinity4196.12.46820.0440499.90.35100.8494
DOI: https://doi.org/10.1515/ohs-2020-0032 | Journal eISSN: 1897-3191 | Journal ISSN: 1730-413X
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Language: English
Page range: 374 - 382
Submitted on: May 29, 2020
|
Accepted on: Jul 3, 2020
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Published on: Nov 26, 2020
Published by: University of Gdańsk
In partnership with: Paradigm Publishing Services
Publication frequency: 4 issues per year
Keywords:
marine Cladocera,
Güllük Bay,
Boğaziçi Lagoon,
abundance,
southwest Turkey
Related subjects:
Chemistry,
Chemistry, other,
Geosciences,
Geosciences, other,
Life sciences,
Life sciences, other

© 2020 Nurçin Killi, published by University of Gdańsk
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

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