Ecological Archives E096-109-A2

Ecological Archives E096-109-A2

J. Bruce Wallace, Susan L. Eggert, Judy L. Meyer, and Jackson R. Webster. 2015. Stream invertebrate productivity linked to forest subsidies: 37 stream-years of reference and experimental data. Ecology 96:1213–1228. http://dx.doi.org/10.1890/14-1589.1

Appendix B. RIA results of functional feeding group abundance and biomass comparisons between Catchments 53 and 55.

Table B1. RIA results for differences between reference and treatment streams for mean monthly abundance (number/m²) and biomass (mg AFDM/m²) of functional feeding groups during litter exclusion (including wood removal and PVC addition) and leaf addition periods (for fast, slow, and mixed leaf species), where n = number of months of benthic data included in analyses. Values are given for both mixed substrates and rock face substrates.

Abundance	Litter Exclusion and Wood Removal Periods (n = 108)
	Mixed substrate	Rockface
Shredders	p < 0.0001	p = 0.249
Scrapers	p = 0.083	p = 0.354
Gatherers	p = 0.019	p = 0.165
Filterers	p = 0.058	p = 0.561
Predators	p = 0.007	p = 0.933
Total	p = 0.005	p = 0.196
	Leaf Addition Period (n = 72)
	Mixed substrate	Rockface
Shredders	p = 0.059	p = 0.122
Scrapers	p < 0.0001	p = 0.996
Gatherers	p = 0.030	p = 0.067
Filterers	p = 0.662	p = 0.323
Predators	p = 0.022	p = 0.388
Total	p = 0.010	p = 0.115

Biomass	Litter Exclusion and Wood Removal Periods (n = 108)
	Mixed substrate	Rockface
Shredders	p = 0.046	p = 0.784
Scrapers	p = 0.849	p = 0.030
Gatherers	p = 0.019	p = 0.002
Filterers	p < 0.0001	p = 0.874
Predators	p < 0.0001	p = 0.500
Total	p = 0.003	p = 0.193
	Leaf Addition Period (n = 72)
	Mixed substrate	Rockface
Shredders	p = 0.028	p = 0.636
Scrapers	p = 0.947	p = 0.157
Gatherers	p = 0.479	p = 0.410
Filterers	p = 0.020	p = 0.916
Predators	p = 0.004	p = 0.701
Total	p < 0.0001	p = 0.633

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