Essays about: "chironomids"

Found 4 essays containing the word chironomids.

  1. 1. As I live and breathe! : The effects of hypolimnic oxygenation on benthic macroinvertebrate and zooplankton assemblages

    University essay from Umeå universitet/Institutionen för ekologi, miljö och geovetenskap

    Author : Rashid Kadhim; [2022]
    Keywords : lake hypoxia; benthic macroinvertebrates; chironomids; zooplankton;

    Abstract : Exacerbated deep-water hypoxia, brought about by anthropogenic-derived dissolved organic carbon (DOC) input, has potentially detrimental impacts on organisms residing in freshwater ecosystems. Oxygenation of the water column is a potential management strategy to mitigate this impact, and used to alleviate DOC induced oxygen depletion. READ MORE

  3. 2. Resource use and consumption of three-spined sticklebacks (Gasterosteus aculeatus) under different environmental conditions during winter.

    University essay from Institutionen för ekologi, miljö och geovetenskap

    Author : David Bystedt; [2013]
    Keywords : fish; consumption; light condition; winter; climate change;

    Abstract : In temperate climate with pronounced seasonality, ice and snow cover reduces light conditions during winter which in turn reduce search efficiency for visual feeding consumers like fish. Furthermore, a suggested major effect of future climate change is an increased input of allochtonous DOC to aquatic systems which causes an increased brownification and hence reduced overall light conditions. READ MORE

  4. 3. Paleolimnology : A literature review

    University essay from Institutionen för ekologi, miljö och geovetenskap

    Author : William Lidberg; [2012]
    Keywords : Diatoms; Lake Sediment; Eutrophication; Acidification; Climate change;

    Abstract : The aim of this literature study is to compare and discuss different fields of paleolimnology, with a focus on three main research areas – eutrophication, acidification, and climate change. Pioneering work and the development of paleolimnological methods around these three areas were reviewed and synthesized. READ MORE

  5. 4. Sediment toxicity in River Kolbäcksån – toxicity tests with Chironomus riparius and Gammarus pulex

    University essay from SLU/Dept. of Aquatic Sciences and Assessment

    Author : Jenny Öhlander; [2003]
    Keywords : Kolbäcksån; sediment toxicity; Chironomus riparius; Gammarus pulex;

    Abstract : During a long time the river Kolbäcksån has been influenced by mining activities in the catchment area and consequently the lakes in the area have been affected by high metal discharges. The most contaminated lake in river Kolbäcksån is L. Saxen, which is situated in the upper part of the river system. READ MORE