Ecological Archives E088-024-A1

Camille McNeely, Jacques C. Finlay, and Mary E. Power. 2007. Grazer traits, competition, and carbon sources to a headwater-stream food web. Ecology 88:391–401.

Appendix A. Macroinvertebrate guild assigments and length–biomass regressions.

Macroinvertebrate taxa list with guild assignments and regression equations used to estimate biomass. Unless otherwise noted, biomass was estimated as: biomass = a(length)b. Where equations are listed for families, these were applied to immature or damaged specimens that could not be identified to genus. In some cases, regressions for the family or order of the specimen were used when equations for the genus were unavailable.

Taxon

a ± SE

b ± SE

Source

Assigned guild

EPHEMEROPTERA        
Ameletidae        
Ameletus
0.077 ± 0.0019
2.588 ± 0.200
Benke et al. 1999 Vulnerable primary consumer
Baetidae
0.0053 ± 0.0010
2.875 ± 0.131
Benke et al. 1999 Vulnerable primary consumer
Baetis
0.0074 ± 0.0009
2.580 ± 0.097
mean of Benke et al. 1999 and Johnson and Cunjak 1999 equations for Baetis Vulnerable primary consumer
Centroptilum
0.0053 ± 0.0010
2.875 ± 0.131
Benke et al. 1999 equation for Baetidae Vulnerable primary consumer
Labiobaetis
0.0053 ± 0.0010
2.875 ± 0.131
Benke et al. 1999 equation for Baetidae Vulnerable primary consumer
Ephemerellidae
 
 
   
Drunella
0.0122 ± 0.0058
2.904 ± 0.287
mean of Benke et al. 1999 and Johnson and Cunjak 1999 equations for Drunella Vulnerable primary consumer
Serratella
0.0104 ± 0.0000
2.707 ± 0.870
mean of Benke et al. 1999 and Johnson and Cunjak 1999 equations for Serratella Vulnerable primary consumer
Heptageniidae
 
 
   
Cynigma
0.0108 ± 0.0014
2.754 ± 0.039
Benke et al. 1999 equation for Heptageniidae Vulnerable primary consumer
Cinygmula
0.0108 ± 0.0014
2.754 ± 0.039
Benke et al. 1999 equation for Heptageniidae Vulnerable primary consumer
Epeorus
0.01200 ± 0.00007
2.746 ± 0.056
mean of two Epeorus spp., Benke et al. 1999 Vulnerable primary consumer
Nixe
0.0080 ± 0.0008
2.919 ± 0.079
Benke et al. 1999 Vulnerable primary consumer
Leptophlebiidae
 
 
   
Paraleptophlebia
0.0078 ± 0.0117
2.567 ± 0.040
mean of Benke et al. 1999 and Johnson and Cunjak 1999 equations for Paraleptophlebia Vulnerable primary consumer
PLECOPTERA
 
 
   
Chloroperlidae
0.0062
2.724
Benke et al. 1999 equation for Sweltsa Vulnerable primary consumer
Nemouridae
 
 
   
Malenka
0.0056 ± 0.0010
2.762 ± 0.107
Benke et al. 1999 equation for Nemouridae Vulnerable primary consumer
Perlidae
0.0099 ± 0.0030
2.879 ± 0.092
Benke et al. 1999 Invertebrate predator
Calineuria
0.0099 ± 0.0030
2.879 ± 0.092
Benke et al. 1999 equation for Perlidae Invertebrate predator
Hesperoperla
0.0099 ± 0.0030
2.879 ± 0.092
Benke et al. 1999 equation for Perlidae Invertebrate predator
Perlodidae
0.0196 ± 0.0118
2.742 ± 0.043
Benke et al. 1999 Invertebrate predator
TRICHOPTERA
0.0620
2.816
mean of Trichoptera family equations, Benke et al. 1999  
Brachycentridae
 
 
   
Micrasema
0.0181 ± 0.0019
2.410 ± 0.087
Benke et al. 1999 Vulnerable primary consumer
Calamoceratidae
 
 
   
Heteroplectron
0.0040
2.933
Benke et al. 1999 equation for Limnephilidae Detritivore
Glossosomatidae
 
 
   
Agapetus
0.0082 ± 0.0017
2.958 ± 0.070
Benke et al. 1999 equation for Glossosomatidae Armored grazer
Glossosoma penitum
0.0058 ± 0.0018
3.029 ± 0.171
Developed by us Armored grazer
Hydropsychidae
 
 
   
Hydropsyche
0.0041
2.970
Hydropsyche occidentalis, Benke et al. 1999 Filterer
Parapsyche
0.0046 ± 0.0007
2.926 ± 0.151
Benke et al. 1999 equation for Hydropsychidae Filterer
Hydroptilidae
0.0062 ± 0.0055
2.816 ± 0.054
mean of Trichoptera family equations, Benke et al. 1999 Vulnerable primary consumer
Hydroptila
0.0062 ± 0.0055
2.816 ± 0.054
mean of Trichoptera family equations, Benke et al. 1999 Vulnerable primary consumer
Ochrotrichia
0.0062 ± 0.0055
2.816 ± 0.054
mean of Trichoptera family equations, Benke et al. 1999 Vulnerable primary consumer
Lepidostomatidae
 
 
   
Lepidostoma
0.0079 ± 0.0009
2.649 ± 0.135
Benke et al. 1999 Detritivore
Limnephilidae
0.0040 ± 0.0008
2.933 ± 0.065
Benke et al. 1999  
Ecclesiomyia
0.0040 ± 0.0008
2.933 ± 0.065
Benke et al. 1999 equation for Limnephilidae Detritivore
Hydatophylax
0.0040 ± 0.0008
2.933 ± 0.065
Benke et al. 1999 equation for Limnephilidae Detritivore
Philopotamidae
 
 
   
Wormaldia
0.0050 ± 0.0000
2.511 ± 0.074
Benke et al. 1999 equation for Philipotamidae Filterer
Polycentropodidae
 
 
   
Polycentropus
0.0071 ± 0.0015
2.531 ± 0.674
Benke et al. 1999 Invertebrate predator
Psychomyiidae
 
 
   
Tinodes
0.0039
2.873
Benke et al. 1999 equation for Lype Vulnerable primary consumer
Rhyacophilidae
 
 
   
Rhyacophila
0.0099 ± 0.0012
2.480 ± 0.385
Benke et al. 1999 Invertebrate predator
Uenoidae
 
 
   
Neophylax rickeri
0.0108
2.576
Developed by us Armored grazer
COLEOPTERA
 
 
   
Elmidae (larvae)
0.0074 ± 0.0025
2.879 ± 0.177
Benke et al. 1999 equation for Elmidae Vulnerable primary consumer
Ampumixis (larvae)
0.0074 ± 0.0025
2.879 ± 0.177
Benke et al. 1999 equation for Elmidae Vulnerable primary consumer
Optioservus (larvae)
0.0039
2.690
Benke et al. 1999 Vulnerable primary consumer
Hydrophilidae
 
 
   
Ameter (larvae)
0.0157 ± 0.0096
3.03 ± 0.60
mean of three Coleoptera family equations, Benke et al. 1999 Invertebrate predator
Psphenidae
 
 
   
Acneus
0.0123 ± 0.0041
2.906 ± 0.023
Benke et al. 1999 equation for Psphenidae Vulnerable primary consumer
Eubrianax
0.0123 ± 0.0041
2.906 ± 0.023
Benke et al. 1999 equation for Psphenidae Vulnerable primary consumer
Psphenus
0.0077 ± 0.0012
2.883 ± 0.122
Benke et al. 1999 Vulnerable primary consumer
DIPTERA
 
 
   
Ceratopogonidae
0.0025 ± 0.0011
2.496 ± 0.213
Benke et al. 1999 Invertebrate predator
Chironomidae (excluding Tanypodinae)
0.0018 ± 0.0004
2.617 ± 0.067
Benke et al. 1999 Chironomidae
Tanypodinae
0.0026 ± 0.0005
2.503 ± 0.458
Benke et al. 1999 Invertebrate predator
Psychodidae
 
 
   
Maurina
0.0034± 0.0008
2.814 ± 0.133
mean of Nematocera family equations, Benke et al. 1999 Vulnerable primary consumer
Empedidae
0.0054 ± 0.0012
2.546 ± 0.110
Benke et al. 1999 Invertebrate predator
Chelifera
0.0054 ± 0.0012
2.546 ± 0.110
Benke et al. 1999 equation for Empedidae Invertebrate predator
Simuliidae
0.0020 ± 0.0006
3.011 ± 0.153
Benke et al. 1999 Filterer
Tipulidae
0.0029 ± 0.0007
2.681 ± 0.055
Benke et al. 1999 Detritivore
Antocha
0.0029 ± 0.0007
2.681 ± 0.055
Benke et al. 1999 equation for Tipulidae Vulnerable primary consumer
TUBELLARIA
0.0082 ± 0.0013
2.168 ± 0.016
Benke et al. 1999 Invertebrate predator
OLIGOCHAETA Calculated biovolume from length and diameter and converted to biomass according to Smit et al. 1993 Detritivore

LITERATURE CITED

Benke, A. C., A. D. Huryn, L. A. Smock, and J. B. Wallace. 1999. Length-mass relationships for freshwater macroinvertebrates in North America with particular reference to the southeastern United States. Journal of the North American Benthological Society 18:308–343.

Johnston, T. A., and R. A. Cunjak. 1999. Dry mass-length relationships for benthic insects: a review with new data from Catamaran Brook, New Brunswick, Canada. Freshwater Biology 41:653–674.

Smit, H., E. D. van Heel, and S. Wiersma. 1993. Biovolume as a tool in biomass determination of Oligochaeta and Chironomidae. Freshwater Biology 29:37–46.


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