Daniel S. Gruner. 2004. Attenuation of top-down and bottom-up forces in a complex terrestrial community. Ecology 85:3010–3022.

Appendix B. A table showing general linear model results for arthropod trophic density and biomass.

Table B1. General linear model results for arthropod trophic density and biomass (natural log transformed) from the final sampling in April and May 2001 (see Fig. 2).

Source	df†	Density			Biomass
		F	P		F	P
Total Arthropods
Fertilization (F)	1,7	12.869	0.009		0.420	0.538
Cage (C)	1,7	4.219	0.079		3.431	0.106
F × C	1,7	4.552	0.070		1.142	0.321
Block (B)	7,7	7.507	0.008		1.864	0.215
F × B	7,7	2.547	0.120		1.913	0.206
C × B	7,7	2.713	0.106		2.374	0.138
Detritivores
Fertilization (F)	1,7	13.892	0.007		0.092	0.770
Cage (C)	1,7	0.710	0.427		0.433	0.532
F × C	1,7	0.875	0.381		1.370	0.280
Block (B)	7,7	6.329	0.013		0.839	0.589
F × B	7,7	1.241	0.392		0.607	0.737
C × B	7,7	1.164	0.423		0.946	0.528
Herbivores
Fertilization (F)	1,7	29.399	0.001		12.356	0.010
Cage (C)	1,7	2.333	0.171		2.804	0.138
F × C	1,7	2.499	0.158		1.815	0.220
Block (B)	7,7	1.183	0.415		0.666	0.698
F × B	7,7	0.979	0.511		0.454	0.935
C × B	7,7	0.516	0.799		0.684	0.686
Carnivores
Fertilization (F)	1,7	1.674	0.237		0.071	0.734
Cage (C)	1,7	11.321	0.012		8.781	0.021
F × C	1,7	2.700	0.144		1.246	0.301
Block (B)	7,7	2.339	0.142		1.325	0.360
F × B	7,7	1.174	0.419		2.605	0.115
C × B	7,7	1.937	0.202		3.654	0.054
Spiders
Fertilization (F)	1,7	19.713	0.003		8.229	0.024
Cage (C)	1,7	1.368	0.280		2.618	0.150
F × C	1,7	9.879	0.016		6.496	0.038
Block (B)	7,7	1.698	0.251		1.982	0.193
F × B	7,7	1.680	0.255		1.740	0.241
C × B	7,7	1.002	0.499		1.115	0.445

   Notes: Results are listed for all arthropods, detritivores, herbivores, predators, and spiders excluding Achaearanea cf. riparia. Boldface P values are significant at  = 0.05.

^† Numerator, denominator degrees of freedom.