Essays about: "aquatic insects"

Showing result 1 - 5 of 11 essays containing the words aquatic insects.

  1. 1. Restaureringens betydelse för insekter i strandzonen

    University essay from SLU/Dept. of Wildlife, Fish and Environmental Studies

    Author : Oskar Johansson; Isak Landström; [2019]
    Keywords : akvatiska insekter; fisk; flottning; makroevertebrat; vattenekologi; älv;

    Abstract : Flottningen har varit en dominerande del av transporten för skogsråvara sedan skogsindustrierna började växa fram under mitten av 1800-talet. Trots att flottningen idag har upphört är effekterna fortfarande kvarvarande efter den flottledsrensning som utfördes i vattendragen. READ MORE

  3. 2. Inelastic LIDAR for Monitoring Aquatic Fauna

    University essay from Lunds universitet/Förbränningsfysik; Lunds universitet/Fysiska institutionen

    Author : Mikael Ljungholm; [2016]
    Keywords : LIDAR; Laser; hyperspectral; multispectral; inelastic; ecology; monitoring; plankton; aquatic; Scheimpflug; Technology and Engineering;

    Abstract : This thesis is oriented around designing the world first inelastic hyperspectral LiDAR(Light Detection and Ranging) system for aquatic use. The system was designed around the task of monitoring zooplankton and environmental indicators in water. Scheimpflug lidar was previously developed for monitoring flying insects, aerosols and gases. READ MORE

  4. 3. Do Trichoptera in running water fly upstream?

    University essay from Linköpings universitet/Biologi; Linköpings universitet/Tekniska fakulteten

    Author : Malin Larsson; [2015]
    Keywords : Trichoptera; drift; colonisation cycle; upstream flight;

    Abstract : Drift moves aquatic insects downstream, risking depopulation of upstream reaches. However, the necessity and exist­ence of an upstream flight to compensate for drift has not been undisputed. I analysed a sample of approximately 70 000 Trichoptera from a stream in northern Sweden collected during one season in 1974. READ MORE

  5. 4. Effects of Environmental Variables on Four Aquatic Insect Taxa among Smaller Water Bodies of Different Ages on Farmland; A Pilot Study

    University essay from Högskolan i Halmstad/Bio- och miljösystemforskning (BLESS)

    Author : Assad Jaggwe; [2015]
    Keywords : Water bodies; Age; Insect species; Biodiversity; Agricultural land; Conservation;

    Abstract : High anthropogenic modification like infrastructural development, drainage, eutrophication, dumping garbage, is a threat to biodiversity of smaller water bodies in agricultural landscapes. However, smaller water bodies have historically been constructed for drainage, waste treatment and other purposes. READ MORE

  6. 5. Do Trichoptera in running water fly upstream?

    University essay from Linköpings universitet/Institutionen för fysik, kemi och biologi

    Author : Malin Larsson; [2015]
    Keywords : Trichoptera; drift; colonisation cycle; upstream flight;

    Abstract : Drift moves aquatic insects downstream, risking depopulation of upstream reaches. However, the necessity and exist-ence of an upstream flight to compensate for drift has not been undisputed. I analysed a sample of approximately 70 000 Trichoptera from a stream in northern Sweden collected during one season in 1974. READ MORE