Ecological engineering approaches to restoring the aquatic biological community of an urban pond ecosystem and its effects on water quality ‑ a case study of the urban Xixi National Wetland Park in China | Knowledge and Management of Aquatic Ecosystems

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Table 2

Distribution and dominance of macrobenthic fauna in Xixi wetland experimental ponds.

Species	Treatment group 1	Treatment group 2	Treatment group 3	Control group	Dominance index
Annelida
Branchiura sowerbyi	＋		＋	＋＋	0.071
Limnodrilus hoffmeisteri	＋		＋	＋＋	0.060
Aulodrilus pluriseta	＋	＋	＋	＋	0.015
Erpobdella sp.	＋		＋		0.002
Glossiphonia sp.	＋	＋			0.002
Nais variabilis				＋	<0.001
Branchiodrilus hortensis				＋	<0.001
Mollusca
Bellamya purificata	＋	＋	＋	＋	0.109
Parafossarulus eximius	＋	＋	＋	＋	0.041
Parafossarulus striatulus	＋		＋	＋	0.009
Bellamya aeruginosa	＋		＋	＋	0.005
Anodonta woodiana	＋		＋	＋	0.002
Bithynia misella	＋				0.001
Radix plicatula			＋		<0.001
Unio dongtasiae	＋				<0.001
Semisulcospira cancellata			＋		<0.001
Chironomidae
Chironomus plumosus	＋＋		＋＋	＋	0.052
Einfeldia dissidens	＋		＋＋	＋	0.042
Limnophyes sp.		＋	＋	＋	0.004
Dicrotendipes sp.		＋	＋	＋	0.002
Microchironomus tener	＋	＋	＋		0.002
Glyptotendipes tokunagai			＋		0.001
Other
Cordulegastridae sp.			＋		>0.001
Ceratopogonidae sp.			＋	＋	0.001
Isopoda sp.				＋	<0.001
Palaemon modestus			＋		<0.001
Dytiscidae sp.	＋				<0.001
Gomphidae sp.	＋			＋	<0.001
Macrobrachium nipponense			＋		<0.001

Note: ++ indicated that 50 ind/m²≤ average density <100 ind/m²; + indicated that average density <50 ind/m².

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