Laserfiche WebLink
17 <br />Macrofragments were probably from riparian or emergent or submergent <br />habitats. They were components of both the benthic and drift environments <br />because they were consumed by plankton feeders such as P. promelas and <br />benthic feeders such as C. latipinnis and Ictalurus. <br />Macrofragments were consumed by both endangered and non-endangered <br />species. Adult N. stramineus consumed significantly more macrofragments <br />than other fish over all strata. YOY Pimephales at Stratum V11 and Adult <br />Pimephales at Stratum D consumed significantly more than other fish for <br />ranked mean weights. YOY C. discobolus at Stratum IX consumed more on the <br />basis of ranked means than other fish except Adult N. stramineus. At <br />Strata C and F, Adult and YOY Pimephales consumed significantly more than <br />other fish. <br />Debris <br />Debris consisted of a paste of coarse particles of inorganic sedi- <br />ments, macrofragments, unidentifiable invertebrate remains, and some seston. <br />The material in this all-encompassing category was probably consumed in <br />zones of deposition in benthic regions. <br />Debris was consumed only by YOY C. latipinnis at Stratum IX. P-values <br />were .0001 for both raw and ranked data for total strata and Stratum IX, <br />indicating the mean weight was significantly greater than zero. <br />Fish <br />This food item category consisted of partial remains of fish and <br />whole fish specimens of N. lutrensis (Darrel Snyder, personal communication). <br />Young of the year food N. lutrensis, less than 12 mm long, were probably <br />found in slack water shallow areas along river banks.