Do separated taxa react differently to a long-term salinity increase? The meiobenthos changes in Bay Sivash, largest hypersaline lagoon worldwide | Knowledge and Management of Aquatic Ecosystems

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Table 3

The characteristics of the Nematoda taxocene in Bay Sivash (2018, May–June).

Species	FO, %	Abundance, ind. m⁻²		Salinity range, g l⁻¹

		Range	Average
Bottom community
Class Chromadorea
Order Monhysterida
Family Linhomoeidae
Terschellingia longicaudata de Man, 1907	0.125	434	54	76
T. cf. antonovi Filipjev, 1922	0.125	2604	325.5	76
T. cf. pontica Filipjev, 1918	0.250	1736–2105	480	75–76
Family Xyalidae
Theristus sp.	0.375	2105–3368	1064	56–77
Th. littoralis Filipjev, 1922	0.250	434–1579	252	75–77
Daptonema maeoticum (Filipjev, 1922)	0.125	842	151	30
Family Monhysteridae
Thalassomonhystera parva (Bastian, 1865)	0.50	7578–729410	109532	75–88
Th. attenuata (Filipjev, 1922)	0.125	421	53	30
Eumonhystera filiformis (Bastian, 1865)	0.375	652–129130	16603	75–88
Order Chromadorida
Family Ethmolaimidae
Ethmolaimus multipapillatus Paramonov, 1926	0.500	842–7824	1682	56–88
Family Chromadoridae
Neochromadora poecilosomoides (Filipjev, 1918)	0.125	842	105	30
Spilophorella campbelli Allgén, 1928	0.125	421	53	30
Order Rhabditida
Family Rhabditidae
Rhabditis? sp.	0.125	1736	217	75
Class Enoplea
Order Dorylaimida
Family Qudsianematidae
Eudorylaimus sp.	0.125	434	54	75
Order Enoplida
Family Oncholaimidae
Oncholaimus brevicaudatus Filipjev, 1918	0.375	421–868	227	30–77
Metoncholaimus demani (Zur Strassen, 1894)	0.125	29470	3684	30
A number of species in a bottom sample, range/average	1–11/3.75	–	–	–
The total number of the species on bottom	16(11*)	–	–	–
Floating green algae mat community
Class Chromadorea
Order Monhysterida
Family Linhomoeidae
Terschellingia cf. antonovi Filipjev, 1922	0.143	450	64.4	75
Family Xyalidae
Theristus sp.	0.143	450	64.4	82
Th. latissimus (Filipjev, 1922)	0.143	1350	193	82
Family Monhysteridae
Thalassomonhystera parva (Bastian, 1865)	1.000	750–531300	126000	30–82
Eumonhystera filiformis (Bastian, 1865)	0.429	450–14850	2445	56–82
Order Chromadorida
Family Ethmolaimidae
Ethmolaimus multipapillatus Paramonov, 1926	0.429	50–4050	885	56–82
Family Chromadoridae
Chromadora nudicapitata Bastian, 1865	0.143	3450	495	30
Family Cyatholaimidae
Cyatholaimus gracilis (Eberth, 1863) Bastian, 1865	0.290	3600–10350	1995	30–52
Class Enoplea
Order Enoplida
Family Oncholaimidae
Oncholaimus brevicaudatus Filipjev, 1918	0.143	1800	257	75
Metoncholaimus demani (Zur Strassen, 1894)	0.143	1800	257	52
A number of species in a mat sample, range/average	1-6/3	–	–	–
The total number of the species in the mats	10(9*)	–	–	–
The total number of the species in the bay	19(13*)	–	–	–

FO − frequency of occurrence; * − the number of species without found only at salinity of 30 g l⁻¹.

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