Table 1 Mean density (individuals per 100 g dry soil, n = 3) of soil nematodes and the relative abundance of nematode trophic groups under different fertilizer treatments.

From: Differential responses of soil nematode community to pig manure application levels in Ferric Acrisols

Genus	c-p	CK	P1	P2	P3	P4	P5
Bacterivores	Density	24.7 ± 16.8a^*	53.0 ± 14.8a	83.9 ± 19.0a	164.2 ± 64.9b	190.5 ± 62.3b	309.3 ± 53.1c
Bacterivores	Relative abundance (%)	12.1% ± 7.5%a	16.8% ± 0.8%a	19.7% ± 2.5%a	33.1% ± 8.2%b	37.1% ± 10.4%b	46.4% ± 9.1%b
Protorhabditis	Ba₁	2.9 ± 2.9a	6.6 ± 6.6a	29.1 ± 25.6a	30.7 ± 37.7a	29.7 ± 29.7a	11.7 ± 6.6a
Rhabditis	Ba₁	8.7 ± 10.5a	15.8 ± 4.0ab	18.5 ± 9.1ab	8.3 ± 0.1a	14.9 ± 14.9ab	44.9 ± 39.3b
Cephalobus	Ba₂	0a	3.3 ± 3.3b	0a	0a	0a	0a
Eucephalobus	Ba₂	13.1 ± 7.3a	17.9 ± 6.1a	21.1 ± 7.3a	112.6 ± 36.7b	145.9 ± 47.4b	250.0 ± 25.3c
Prismatolaimus	Ba₂	0a	9.3 ± 2.7b	11.3 ± 4.4b	12.6 ± 4.3b	0a	2.8 ± 2.8a
Alaimus	Ba₄	0a	0a	3.9 ± 3.9b	0a	0a	0a
Fungivores	Density	21.8 ± 1.9a	29.0 ± 9.8ab	70.1 ± 16.1c	40.9 ± 3.8ab	21.3 ± 4.3a	20.5 ± 3.2a
Fungivores	Relative abundance (%)	10.9% ± 2.5%b	9.1% ± 1.6%b	16.4% ± 2.1%c	8.7% ± 2.5%b	4.3% ± 1.3%a	3.1% ± 0.5%a
Aphelenchus	Fu₂	2.7 ± 4.7a	0a	0a	0a	0a	0a
Filenchus	Fu₂	4.1 ± 4.1a	19.9 ± 8.1b	49.3 ± 9.9c	20.1 ± 3.6b	17.0 ± 0b	13.8 ± 3.1ab
Diphtherophora	Fu₃	2.9 ± 2.9b	0a	0a	0a	0a	0a
Tylencholaimus	Fu₄	12.1 ± 6.4ab	9.1 ± 3.8a	20.9 ± 6.7b	20.8 ± 3.9b	4.3 ± 4.3a	6.7 ± 5.8a
Plant parasites	Density	85.1 ± 8.4bc	120.6 ± 52.5c	77.0 ± 22.0abc	55.0 ± 15.4ab	32.8 ± 9.7a	40.5 ± 23.7ab
Plant parasites	Relative abundance (%)	42.2% ± 7.2%c	37.1% ± 6.2%c	18.0% ± 3.7%b	11.4% ± 2.3%ab	6.6% ± 2.5%a	6.0% ± 3.2%a
Tylenchus	Pp₂	48.1 ± 7.4a	72.1 ± 60.3a	30.5 ± 16.3a	28.7 ± 5.1a	22.8 ± 11.2a	40.5 ± 23.7a
Criconemoides	Pp₃	0a	2.0 ± 2.0ab	6.3 ± 1.5c	4.7 ± 4.7bc	0a	0a
Pratylenchus	Pp₃	36.9 ± 9.2c	46.5 ± 6.8c	40.2 ± 7.6c	21.6 ± 12.2b	10.0 ± 1.5ab	0a
Omnivores-predators	Density	73.4 ± 30.8a	112.5 ± 16.0a	191.7 ± 12.9b	224.8 ± 28.1bc	267.0 ± 70.2c	299.2 ± 51.5c
Omnivores-predators	Relative abundance (%)	34.8% ± 10.0%a	36.9% ± 6.5%ab	45.9% ± 8.0%ab	46.9% ± 5.2%ab	52.1% ± 12.3%b	44.6% ± 5.6%ab
Dorylaimoides	Om₄	0a	0a	10.3 ± 10.3b	2.4 ± 2.4a	0a	0a
Eudorylaimus	Om₄	5.8 ± 5.8ab	7.9 ± 3.9b	5.8 ± 1.1ab	0a	2.9 ± 2.9ab	5.6 ± 5.6ab
Microdorylaimus	Om₄	0a	0a	0a	0a	0a	4.7 ± 4.7b
Thorneella	Om₄	0a	3.5 ± 3.3b	0a	0a	0a	0a
Aporcelaimus	Om₅	46.7 ± 28.2a	55.6 ± 3.6a	55.8 ± 1.0a	93.9 ± 34.1b	100.5 ± 12.2b	39.4 ± 7.3a
Mesodorylaimus	Om₅	2.9 ± 2.9a	12.6 ± 7.0ab	14.2 ± 14.2ab	28.2 ± 16.9b	23.0 ± 6.0ab	11.1 ± 11.2ab
Prodorylaimus	Om₅	18.0 ± 6.5a	19.0 ± 13.0a	77.3 ± 5.9ab	50.2 ± 8.9ab	95.1 ± 64.3b	223.1 ± 65.8c
Mylonchulus	Pr₄	0a	4.0 ± 4.0ab	2.4 ± 2.4ab	16.5 ± 16.5b	5.8 ± 5.8ab	4.7 ± 4.7ab
Mononchus	Pr₄	0a	9.9 ± 9.9a	25.9 ± 2.5b	33.6 ± 8.9bc	39.7 ± 5.3c	10.7 ± 10.7a
Total	Density	205.0 ± 33.4a	315.1 ± 91.0ab	422.8 ± 45.8bc	484.9 ± 87.5c	511.5 ± 59.1c	669.5 ± 43.9d

^*The mean and standard error of the density of soil nematodes and the relative abundances of nematode trophic groups (%) under the different fertilizer treatments are shown. Different lowercase letters indicate significant differences among the treatments (p < 0.05). CK: chemical fertilizer alone; P1–P5: chemical fertilizer with the addition of pig manure at rates of 1.75, 3.5, 7, 14 and 28 t·ha⁻¹·yr⁻¹, respectively; c-p: colonizer-persister group; Ba: bacterivores; Fu: fungivores; Pp: plant parasites; Om: omnivores; and Pr: predators.

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Table 1 Mean density (individuals per 100 g dry soil, n = 3) of soil nematodes and the relative abundance of nematode trophic groups under different fertilizer treatments.

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