Essays about: "tench"

Found 5 essays containing the word tench.

1. 1. Changes in the fish community in Lake Tåkern, Sweden - a comparison between 1978-1979 and 2019

   University essay from Linköpings universitet/Biologi

   Author : Manfred Skog; [2020]
   Keywords : Fish community; Shallow lakes; Test-fishing; Establishment of species; Crucian carp; Bream; Winter hypoxia;

   Abstract : Climate changes alter species composition in both aquatic and terrestrial ecosystems. For establishment of species in a fish community, dispersal barriers, habitat structure and interactions between species act as a filter. READ MORE

3. 2. Public Relations Management in Large & Innovative Multinational Corporations : A qualitative & comparative study of Shell, Coloplast & Company A

   University essay from Mälardalens högskola/Akademin för ekonomi, samhälle och teknik

   Author : Paulinus Ihedioha; Evelina Husar; [2014]
   Keywords : Public relations; relationship management in public relations; impact of public relations; measuring public relations; communication;

   Abstract : Purpose:       The purpose of this study is to examine the factors that affect PR in multinational corporations (MNCs) today, and to explore how the factors affect PR management in the selected MNCs. Method:       A qualitative research was conducted through semi-structured interviews with PR managers at three multinational corporations. READ MORE

4. 3. Method development for serial-extraction of contaminants in fish followed by species comparison of PCB 153 levels in Tench and Roach from Källby waste water treatment pond

   University essay from Lunds universitet/Miljövetenskaplig utbildning

   Author : Julia Grönholdt Palm; [2013]
   Keywords : serial-extraction; Method development; fish; PCB; Källby; species comparison; roach; tench; contaminants; waste water; Earth and Environmental Sciences;

   Abstract : Two studies were performed in this paper. The first study was a method development examining the possibilities to do a serial extraction of lipids, PCB 153, NSAIDs (non-steroidal anti-inflammatory drugs) and selective serotonin reuptake inhibitors (SSRIs) from a single sample. READ MORE

5. 4. Predator-induced morphological defences in a freshwater snail

   University essay from Institutionen för ekologi, miljö och geovetenskap

   Author : Annelie Lagesson; [2011]
   Keywords : ;

   Abstract : The ability of a certain genotype to express different phenotypes depending on variations in the environment is called phenotypic plasticity. Predator induced defences are among the most studied and wide spread examples of phenotypic plasticity. READ MORE

6. 5. How does predation from fish influence the benthic invertebrates’ species composition in the Phragmites australis and Chara vegetation of Lake Takern?

   University essay from Ekologi

   Author : Ernest Aigbavbiere; [2011]
   Keywords : Handling time; intake rate; predation; macro-invertebrates.;

   Abstract : Predation is one of the important selective factors that regulate the species composition of benthic invertebrate communities. The study objective was to investigate the invertebrate distribution in two contrasting habitats in Lake Takern, southern Sweden, submerged Chara vegetation and emergent Phragmites australis vegetation, and to investigate the influence of predation from fish on certain invertebrates. READ MORE