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Temporal variation of the soft-bottom molluscan fauna in north-western İskenderun Bay (Levantine Sea)

Banu Bitlis Bakır
Banu Bitlis Bakır
, 
Bilal Öztürk
Bilal Öztürk
, 
Alper Doğan
Alper Doğan
 und 
Neslihan Türkçü
Neslihan Türkçü
   | 12. Dez. 2016
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Article Category: Original research paper
Online veröffentlicht: 12. Dez. 2016
Seitenbereich: 445 - 452
Eingereicht: 10. März 2016
Akzeptiert: 30. März 2016
DOI: https://doi.org/10.1515/ohs-2016-0038
Schlüsselwörter
© Faculty of Oceanography and Geography, University of Gdańsk, Poland. All rights reserved.
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Figure 1

Map of the study region with the location of sampling sites (continuous lines represent the jetties)
Map of the study region with the location of sampling sites (continuous lines represent the jetties)

Figure 2

Multidimensional scaling plot of similarity between temporal samples (each association ≥40%); x = 2012, y = 2013, z = 2014
Multidimensional scaling plot of similarity between temporal samples (each association ≥40%); x = 2012, y = 2013, z = 2014

Figure 3

The number of individuals (ind. m-2) of C. diplax and F. pupoides at the stations in 2012, 2013 and 2014
The number of individuals (ind. m-2) of C. diplax and F. pupoides at the stations in 2012, 2013 and 2014

Mollusk species contributing to a similarity between the years of 2012, 2013 and 2014 and their average similarity

2012 2013 2014 2012-2013 2012-2014 2013-2014
average similarity/dissimilarity (%) 23 39 30 77 79 70
Corbula gibba 22 - - - - -
Cerithidium diplax 16 39 14 11 6 7
Nassarius pygmaeus 11 - 7 - - -
Finella pupoides 11 24 22 8 7 7
Bittium reticulatum 6 11 13 7 6 6

Coordinates, sampling methods, depth range and biotopes of the stations

Stations Coordinates Latitude-Longitude Sampling methods Depth range (m) Biotope
1 36°51'35.0"N-35°54'45.1"E Grab 3.4 Sandy mud
2 36°52'10.1"N-35°55'07.3"E Grab 4.4 Sandy mud
3 36°52'23.0"N-35°55'25.1"E Grab 4 Sandy mud
4 36°51'52.2"N-35°55'28.3"E Grab 8.6 Sandy mud
5 36°50'57.4"N-35°55'47.2"E Grab 30 Sandy mud
6 36°52'04.0"N-35°55'47.0"E Grab 11.7 Silt
7 36°51'24.1"N-35°56'00.2"E Grab 25.5 Silt
8 36°51'37.2"N-35°56'16.8"E Grab 25.4 Silt
9 36°50'59.7"N-35°55'33.1"E Grab 24 Silt
10 36°51'22.1"N-35°54'57.6"E Grab 7.3 Sand
11 36°50'27.0"N-35°54'32.0"E Grab 12.2 Silt
12 36°49'45.2"N-35°55'43.4"E Grab 37 Silt

Temporal variation in the community parameters at the stations in 2012, 2013, 2014

Station Number of species Number of individuals (ind m-2) Total Biomass (g m-2) Diversity index Evenness index
2012 2013 2014 2012 2013 2014 2012 2013 2014 2012 2013 2014 2012 2013 2014
1 37 17 33 4090 950 2050 222.30 0.43 2.25 3.74 2.94 2.95 0.72 0.72 0.58
2 17 23 29 2140 6050 2900 41.63 1.84 0.96 1.96 1.94 2.81 0.48 0.42 0.58
3 21 10 22 1550 2470 3540 55.80 9.36 1.14 3.32 2.14 2.32 0.76 0.58 0.52
4 44 11 22 11910 980 4330 325.32 6.28 61.42 2.15 1.97 1.98 0.39 0.57 0.44
5 4 23 20 120 4530 1360 0.50 7.94 31.99 1.61 2.46 3.04 0.81 0.53 0.70
6 15 8 14 970 420 1000 2.27 2.35 0.03 3.13 1.42 2.86 0.80 0.47 0.75
7 1 11 14 10 520 1130 0.15 0.61 0.38 0.00 2.63 3.02 0.00 0.71 0.79
8 1 7 10 10 190 470 0.02 0.12 0.05 0.00 2.27 2.53 0.00 0.81 0.76
9 3 5 20 40 140 3170 0.07 0.11 0.33 1.50 1.43 1.83 0.95 0.62 0.42
10 28 28 33 7390 7490 2190 229.15 3.59 36.52 2.78 2.71 3.94 0.58 0.56 0.78
11 16 12 21 860 1500 1030 9.89 380.40 2.16 3.21 2.33 2.78 0.80 0.65 0.63
12 4 5 1 180 150 10 0.44 0.06 0.02 1.23 1.96 0.00 0.62 0.85 0.00

The number of species (S), the number of individuals (N), biomass (g m-2) (B), frequent and dominant species in 2012, 2013 and 2014

Years S N B Frequent species (%) Dominant species (%)
2012 64 2927 887.53 C. gibba (83%)C. diplax (75%)N. pygmaeus (75%) B. reticulatum (39%)
2013 64 2539 413.08 F. pupoides (100%)C. diplax (100%)B. reticulatum (75%) C. diplax (43%)
2014 86 2318 137.24 F. pupoides (92%)B. reticulatum (83%)N. pygmaeus (83%) F. pupoides (41%)
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