Essays about: "benthic algae"

Showing result 11 - 15 of 17 essays containing the words benthic algae.

  1. 11. 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

  2. 12. The effect of migratory fish on freshwater ecosystem nutrient dynamics

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

    Author : Magnus Enbom; [2015]
    Keywords : marine-derived-nutrients; Atlantic salmon; sea trout; Baltic Sea; stable isotopes;

    Abstract : Anadromous fish are often important vectors for nutrient fluxes between marine and freshwater ecosystems. These nutrients, termed as marine-derived nutrients (MDN), enter the stream in the form of eggs, sperm, waste and adult carcasses. READ MORE

  3. 13. Effects of the carotenoid inhibiting herbicide diflufenican on the photosynthesis of benthic algae

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

    Author : Jelena Rakovic; [2014]
    Keywords : benthic algae; freshwater; herbicides; diflufenican; PAM; fluorescence; Lake Erken; photosynthetic efficiency;

    Abstract : Throughout the world, the large-scale use of pesticides in agriculture is an area of concern due to known harmful effects on human and environmental health. Mixtures of different pesticides are found in lakes and streams, where their presence endangers aquatic organisms, like benthic algae, and the ecosystem services they provide. READ MORE

  4. 14. The Functional Importance of Herbivores : Tying the knot between fish biomass, parrotfish feeding and benthic structure on Kenyan coral reefs

    University essay from Stockholms universitet/Stockholm Resilience Centre

    Author : Johanna Källén; [2014]
    Keywords : herbivore; coral reefs; ecosystem process; parrot fish; surgeonfish; Kenya;

    Abstract : Herbivory is considered a key ecosystem process on coral reefs as it enhances reefs resilience by preventing shifts to macroalgal states. In trying to understand mechanisms and consequences of such shifts, research have taken on a variety of approaches, from the effect of declining habitat condition on (herbivorous) fish communities to the roles of specific herbivore functional groups and size classes therein. READ MORE

  5. 15. Experimental zinc stress on benthic diatoms assemblage growth in Fyrisån water

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

    Author : Navid Naghavian; [2012]
    Keywords : Benthic diatoms; heavy metal contamination; valve malformation; heavy metals; DOC; TOC; water assessment;

    Abstract : Benthic diatoms are unicellular, brown algae with siliceous cell walls. They are often used to show water quality in river sand lakes. Benthic diatoms can show elevated nutrient levels, very acid conditions, pollution by organic matter and probably also pollution by heavy metals, which makes them useful biological indicator species. READ MORE