Essays about: "Trichoptera"

Showing result 1 - 5 of 6 essays containing the word Trichoptera.

  1. 1. How does hydropeaking and geological substrate affect aquatic macroinvertebrates in a regulated river?

    University essay from Karlstads universitet/Institutionen för miljö- och livsvetenskaper (from 2013)

    Author : Andreas Vernby; [2021]
    Keywords : Hydropeaking; geological substrate; aquatic macroinvertebrates; EPT species; Hester-Dendy samplers; Korttidsreglering; geologiskt substrat; akvatiska makroevertebrater; EPT; Hester-Dendy-provtagare;

    Abstract : Hydropower is an important source of renewable energy, but is often a cause of degradation to river ecosystems. Hydropeaking, i.e. the frequent alteration of discharge, is a process involved in hydropower generation and has been proven to affect aquatic organisms negatively. READ MORE

  3. 2. Biodiversity of aquatic invertebrates in urban ponds: effects of land use

    University essay from Uppsala universitet/Institutionen för biologisk grundutbildning

    Author : Roberta Hedberg; [2019]
    Keywords : ;

    Abstract : Urban ponds have the potential to hold large abundance and diversity of aquatic invertebrates, which could maintain an overall high biodiversity in the urban landscape. Little is known about how aquatic systems, such as ponds, are affected by the fast rate of urbanisation caused by an increasing human population together with the expansion of cities. READ MORE

  4. 3. Night, light and flight : Light attraction in Trichoptera

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

    Author : Malin Larsson; [2017]
    Keywords : Trichoptera; light attraction; artificial light; biodiversity; insects;

    Abstract : Artificial light is an important and necessary part of our urban environment, but has become a threat to biodiversity. It can have substantial direct and indirect effects on populations of all kinds of organisms. READ MORE

  5. 4. 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

  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