02089nas a2200145   4500008004100000245012400041210006900165300001300234490000700247520155900254100001801813700001701831700001601848856007901864       2011                        eng d00aPatterns of macroinvertebrate production, trophic structure, and energy flow along a tallgrass prairie stream continuum0 aPatterns of macroinvertebrate production trophic structure and e  a887 -8980 v563 a<p>We estimated benthic organic matter standing stocks, macroinvertebrate production, food-web structure, and stream metabolism along a longitudinal continuum of Kings Creek at Konza Prairie Biological Station in Kansas. Benthic macroinvertebrates were sampled for 1 yr from three stream reaches (grass, shrub, gallery forest). Total habitat-weighted production ranged from 9.1 g to 31.9 g ash-free dry weight m&minus;2 yr&minus;1 with the grass headwaters accounting for the highest production. Functional group contributions to production were similar along the continuum, with collector&ndash;gatherers (40&ndash;56% of total) and predators (23&ndash;38%) dominating all reaches. Detrital pathways appeared to account for most energy flow in all reaches, and all reaches were net heterotrophic on all dates when metabolism was measured, except for the grass headwater reach in spring. Predators were well-represented and consumed 65&ndash;107% of total macroinvertebrate production, whereas scrapers (11&ndash;15%), shredders (2&ndash;4%), and filterers (&lt; 1%) consumed relatively small percentages of available resources. Dominance of predators suggested top-down controls are important in this system. However, changes in energy flow through other groups reflected longitudinal variation in resource availability. This prairie stream continuum conforms to some predictions of conceptual stream continua models, but biotic interactions, which are often not considered, may override some predicted responses to changes in the physical template.</p>1 aWhiting, D.P.1 aWhiles, M.R.1 aStone, M.L.  uhttps://aslopubs.onlinelibrary.wiley.com/doi/abs/10.4319/lo.2011.56.3.088702579nas a2200133   4500008004100000245011200041210006900153260004900222490001400271520208100285100001802366700001702384856004402401       2010                        eng d00aMacroinvertebrate production, trophic structure, and energy flow along a tallgrass prairie stream continuum0 aMacroinvertebrate production trophic structure and energy flow a  aCarbondale, ILbSouthern Illinois University0 vMS Thesis3 a<p>Conceptual models of stream continua predict that energy flow and consumer functional structure change predictably with the physical attributes of a stream. To quantify these relationships in a prairie landscape, I estimated macroinvertebrate production, benthic organic matter standing stocks, and resource consumption and egestion by consumer groups along a longitudinal continuum of Kings Creek, a tallgrass prairie stream draining the Konza Prairie Biological Station in Eastern Kansas. I sampled benthic macroinvertebrates for 1 year from three stream reaches, each bordered by distinct riparian vegetation. Riparian vegetation along the continuum ranged from grassy headwaters to shrubby mid-reaches to lower reaches bordered by gallery forest. Total habitat-weighted production ranged from 31.9 g ash-free dry mass (AFDM) m-2 y-1 in the grassy headwater reach to 9.1 g AFDM m-2 y-1 in the shrubby reach to 17.0 g AFDM m-2 y-1 in the gallery forest. Functional group contributions to production generally were similar along the continuum, with collector-gatherers (40%-56% of total) and Predators (23%-38%) dominating all reaches. Quantitative food webs indicated detrital pathways dominated energy flow in all reaches, with collector-gatherers accounting for most energy flow through primary consumers. Predators were well represented and consumed 75% - 135% of total macroinvertebrate production whereas shredders (2-4%), scrapers (11-15%), and filterers (&lt;1%) consumed a small percentage of their particular resources. High production and consumption estimates for macroinvertebrate predators suggest top-down controls are important in this system. Although functional structure was fairly similar among reaches, changes in energy flow through some groups reflected longitudinal changes in resource availability. Results indicate that this tallgrass prairie stream ecosystem is intermediate in the context of predictions of conceptual stream continua models, and biotic interactions may override some predicted responses to changes in the physical template.</p>1 aWhiting, D.P.1 aWhiles, M.R.  uhttp://opensiuc.lib.siu.edu/theses/120/