Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 14 of 14 for “"Hydropsychidae"”.
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The ecological energetics of the net-spinning caddisfly, Hydropsyche venularis Banks (Trichoptera: Hydropsychidae)
The study of organism level energetics in conjunction with ecosystem level energetics can lead to a better understanding of the structure and function of stream ecosystems. The purpose of this study was to calculate energy budget equations for a net-spinning caddisfly, Hydropsyche venularis Banks, …
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Macroinvertebrate Composition and Patterns of Prey Use By Juvenile Pallid Sturgeon (Scaphirhynchus albus) in the Missouri River, South Dakota, and Nebraska
… Isonychiidae, Baetidae, Caenidae, Heptageniidae, Hydropsychidae, and Polycentropodidae. Invertebrate abundance, richness, diversity, and evenness were generally higher in the Gavins Point reach than in the Fort Randall reach for most gear types (except Surber samples). In the Fort Randall reach, …
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Spacial and temporal distributions of selected immature aquatic insect species collected in Sinking Creek, Virginia
… of particular species. Except for one family Hydropsychidae selected closely related species exhibited either spatial separations, temporal separations 1 or a combination of both spatial and temporal separations. Speculations on factors influencing the distributions of selected species are …
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Temporal Dynamics of Benthic Macroinvertebrate Communities and Their Response to Elevated Specific Conductance in Headwater Streams of the Appalachian Coalfields
… not sensitive to elevated SC, as Leuctridae and Hydropsychidae exhibited increased abundance in streams with elevated SC. Best scores for benthic macroinvertebrate community metrics differed based on selected metric, SC Level, and month. Consequently, timing of sampling is important, particularly …
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Serangga akuatik sebagai indikator kualiti air di Johor
… air berkualiti baik antaranya adalah famili Hydropsychidae dari order Trichoptera, famili Baetidae dari order Ephemeroptera dan famili Simuliidae dari order Diptera. Berdasarkan kepada kepelbagaian famili mengikut indek kepelbagaian Shannon (H’), TNJER- PETA direkodkan sebagai yang mempunyai …
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"Aplicación de un sistema multimétrico para evaluar la calidad del agua superficial en la microcuenca El Coyote del Rio Estelí, Nicaragua"
… en cinco familias : Leptohyphidae , Baetidae , Hydropsychidae , Chironomidae y Physidae , siendo el cariotipo piedra el que present ó mayor diversidad y abundancia . El promedio del BMWP /Col fue de 60.06, indicando una calidad del agua entre dudosa y aceptable , y el índice ASPT de 6.71 señala …
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Feeding of Hatchery-reared Brown Trout (Salmo trutta L.) In Relation To The Diet In A South Dakota Stream
… 95 percent of all mayflies collected. Hydropsychidae and Hydroptilidae comprised 93 percent of all drifting Trichoptera. Frogs and fishes were the primary food consumed by the brown trout examined. Trout ate a variety of invertebrates. Ephemeropterans comprised 45 percent by numbers, 27 …
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Community responses of aquatic macroinvertebrates to heavy metals in laboratory and outdoor experimental streams
… were dominated by net-Spinning caddisflies (Hydropsychidae) and Orthocladiini chironomids. The similarity of these experimental results to those observed in the field suggest that macroinvertebrate community responses to heavy metals are highly predictable. Responses of these communities to …
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Life history and secondary production of Cheumatopsyche spp. in a small Appalachian stream with two different land uses on its watershed
… production of Cheumatopsyche spp. (Trichoptera: Hydropsychidae) in Stroubles Creek, a 3rd order stream near Blacksburg, Virginia, in order to compare life histories and production dynamics in two reaches with different land-use in a watershed. The upstream section was influenced by urban and …
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An Ecotoxicological Assessment of a Treated Coal-mining Effluent in the Leading Creek Watershed, Meigs County, Ohio
… (EPT) minus the tolerant caddisfly family Hydropsychidae (2) in situ growth of Corbicula fluminea during 96-d exposure and (3) laboratory testing using Ceriodaphnia dubia. Traditional metrics such as total taxa richness, EPT, diversity and biotic indices were not sensitive to elevated TDS …
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Responses of Aquatic Benthic Macroinvertebrate Communities to a Large Flow Pulse in the Guadalupe, San Antonio and Brazos River Basins, Texas
… BMI taxa responded positively (e.g., Baetidae, Hydropsychidae, Isonychiidae) and negatively (e.g., Elmidae, Leptophlebiidae, Chironomidae) to high flow pulses. Therefore, flow-responsive BMI taxa found in this study provide potential indicator species for environmental flow standards …