Supplement 1. Data from invertebrate foods webs in Glen Canyon, Colorado River, USA.

File List Abundance and biomass.csv<br> Flows to consumers.csv Description Abundance and biomass.csv contains monthly abundance (no./m² +1SD) and biomass (mg AFDM/m² +1SD) of invertebrate taxa. These data were collected from Glen Canyon between 2006 and 2009, are presented on both a habitat-specific and habitat-weighed basis. Checksum values are: column 2 – Ceratapogonidae #/m² – 2.94; column 6: New Zealand Mud Snails #/m² – 1573435.56; column 74: New Zealand Mud Snails mg AFDM/m² – 102828.33, 2 missing values; column 262 Acari mg AFDM/m² – 2.65, 2 missing values. Flows to consumers.csv contains annual estimates of organic matter flow (i.e., consumption; g AFDM m^-2 y^-1) from basal resources to invertebrate consumers. These data represent annual mean (±bootstrapped 95% CI) flows based on combined gut content and secondary production data. Checksum values are: column 3: amorphous detritus – 279.570; column 12: amorphous detritus – 368.555; column 27: animal – 5.819.