01706nas a2200193   4500008004100000245011900041210006900160300001300229490000700242520107100249653001901320653002101339653001601360653001801376653001501394100002001409700001701429856006601446       2008                        eng d00aLife history and production of the riffle beetle, Stenelmis crenata (Say) (Elmidae), in a tallgrass prairie stream0 aLife history and production of the riffle beetle Stenelmis crena  a197 -2040 v303 a<p>We examined life history dynamics and estimated production of the riffle beetle, Stenelmis crenata (Say, 1824), in a tallgrass prairie stream. Stenelmis crenata had a univoltine life cycle with larvae present year-round. Recruitment of first instars occurred from June&ndash;October, larval growth was synchronised through the winter, pupation occurred in late spring, and adults first appeared in late May. Adults were most abundant (24 individuals/m2) during summer and were present in samples through October. For larval biomass and production estimates, a body length&ndash;mass relationship (ash-free dry mass [AFDM] = 0.0079*TL2.7595) was constructed. Mean annual density and biomass of larvae were 235 individuals/m2 and 90.7 mg AFDM/m2, respectively. Annual larval production was 493 mg/m2/y, representing a total of &sim;101 g AFDM for the stream reach examined. Production estimates for S. crenata in this stream were high compared to other estimates for elmids, and this species comprised an appreciable portion of total scraper (13.5%) production.</p>10aaquatic insect10agrassland stream10aGrowth rate10aKonza Prairie10alife cycle1 aStagliano, D.M.1 aWhiles, M.R.  uhttps://www.tandfonline.com/doi/abs/10.1080/0165042080233114102934nas a2200229   4500008004100000245009500041210006900136300001200205490000700217520214000224653003102364653001602395653001302411653003702424653001902461653001902480653002502499653002202524100002002546700001702566856012102583       2002                        eng d00aMacroinvertebrate production and trophic structure in a tallgrass prairie headwater stream0 aMacroinvertebrate production and trophic structure in a tallgras  a97 -1130 v213 aResearch on North American prairie stream communities has lagged behind other regions. We examined the ecosystem significance of the macroinvertebrate community of riffle/run habitats in Kings Creek, a 2<sup>nd</sup>-order tallgrass prairie stream at Konza Prairie Biological Station (Kansas, USA), by estimating secondary production, benthic organic matter standing stocks, and resource consumption and egestion by functional groups. Annual mean standing stock macroinvertebrate biomass was 2.3 g ash-free dry mass (AFDM)/m<sup>2</sup>, annual production was 19.7 g AFDM m<sup>-2</sup> y<sup>-1</sup>, and the annual community production/biomass (P/B) ratio was 8.6. Macroinvertebrate production was higher than published estimates for forested streams of similar size, but much lower than that of a Sonoran desert stream. Distribution of production among functional groups was 30% for collector-gatherers, 9% for collector-filterers, 20% for scrapers, 23% for shredders, and 18% for predators, resembling estimates from some forested streams with the exception of higher scraper production. Although detritivorous groups were productive in this prairie stream, they appeared food limited. Consumption estimates indicated shredders and collector-gatherers annually ingested ∼80% and ∼240% of coarse particulate organic matter (CPOM) and fine particulate organic matter (FPOM) standing stocks, respectively. Thus, re-ingestion and/or diet shifts may be common, particularly among collector-gatherers, and the FPOM pool must turn over rapidly. Invertebrate predators also consumed a sizeable portion (∼52%) of prey, whereas scrapers (∼21%) and filterers (<1%) consumed relatively small portions of their respective resources, suggesting top-down influences on these groups. This study indicates that, during a period of relatively stable flow in this prairie stream, macroinvertebrate production and functional structure were roughly intermediate between North American forested and desert systems. Our results underscore the value of secondary production estimates for examining invertebrate communities in an ecosystem context10aAquatic macroinvertebrates10aEnergy flow10aFood web10aKonza Prairie Biological Station10aorganic matter10aPrairie stream10asecondary production10aTrophic structure1 aStagliano, D.M.1 aWhiles, M.R.  uhttp://knz.lternet.edu/content/macroinvertebrate-production-and-trophic-structure-tallgrass-prairie-headwater-stream00621nas a2200133   4500008004100000245014000041210006900181260004300250300001100293490001400304653002200318100002000340856012700360       2001                        eng d00aAquatic invertebrate and fish communities of tallgrass prairie headwater streams: Bioindicators, secondary production and bioenergetics0 aAquatic invertebrate and fish communities of tallgrass prairie h  aManhattan, KSbKansas State University  a1 -1140 vMS Thesis10atallgrass prairie1 aStagliano, D.M.  uhttp://knz.lternet.edu/content/aquatic-invertebrate-and-fish-communities-tallgrass-prairie-headwater-streams-bioindicators