Essays about: "Bottenfauna"

Found 4 essays containing the word Bottenfauna.

  1. 1. Consequences of stagnant algal mats for the benthic fauna on shallow soft bottoms at northern Gotland, Baltic Sea

    University essay from Uppsala universitet/Institutionen för biologisk grundutbildning

    Author : Jennie Ljungberg; [2015]
    Keywords : Baltic Sea; Benthic fauna; Drifting algae; Algal mats; Soft bottoms; Shallow bays; Bare sand; Oxygen levels; Fish; Östersjön; Bottenfauna; Kringdrivande alger; Algmatta; Mjukbotten; Grunda havsvikar; Sand; Syre nivå; Fisk;

    Abstract : Earlier studies have shown that dense drifting algal mats influence the marine benthic fauna negatively. The purpose of this study was to evaluate the effects of drifting filamentous algae on the benthic fauna on soft bottom shallow bays. READ MORE

  3. 2. Freshwater pearl mussel as indicators of Swedish streams - a comparison between freshwater pearl mussel and biological quality elements

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

    Author : Kristin Forsell; [2014]
    Keywords : flodpärlmussla; biologiska kvalitetsfaktorer; freshwater pearl mussel; biological quality elements;

    Abstract : The freshwater pearl mussel (Margaritifera margaritifera) is a large freshwater mussel. Because of its sensitivity to human impact, such as eutrophication, acidification and alterations of hydromorphology, the species is considered as a robust indicator of stream water quality and biodiversity. READ MORE

  4. 3. Preliminär bedömning av den ekologiska statusen i Enköpingsån

    University essay from SLU/Dept. of Environmental Assessment

    Author : Johan Axnér; [2005]
    Keywords : Ramdirektivet för vatten; ekologisk status; bottenfauna; River Habitat Survey; kemisk status; Enköpingsån och Långtorabäcken;

    Abstract : Under våren och sommaren 2005 utfördes en studie av Enköpingsån och Långtorabäcken för att göra en preliminär bedömning av den ekologiska statusen i åarna. Vilket gjordes genom att undersöka bottenfaunan och den fysiska miljön i och kring vattendragen. READ MORE

  5. 4. Små skogliga vattendrag i Värmland : generell beskrivning, förekomst av traktorspår samt spårens inverkan på bottenfaunan

    University essay from SLU/Dept. of Forest Soils

    Author : Åsa Bergkvist; [2002]
    Keywords : bottenfauna; traktorspår; skog; vattendrag; vattenskydd; Värmland;

    Abstract : Modern forestry requires a high degree of machine traffic for clear felling and scarification operations. The machines most frequently used are big and the traffic often results in tracks on the forest ground. There are many small streams running through a forest, in connection to logging operations, machines might cross these frequently. READ MORE