Essays about: "Lake Tåkern"

Showing result 1 - 5 of 6 essays containing the words Lake Tåkern.

1. 1. Impact of the Warm Summer of 2018 on Growth of Roach (Rutilus rutilus) in Lake Tåkern, Sweden

   University essay from Linköpings universitet/Biologi

   Author : Emil Pedersen; [2020]
   Keywords : Age group; Aging; Annual length increment; Climate Change; Population; Roach; Scales; Temperature;

   Abstract : Climate change will lead to higher temperatures and longer summers in the future, which will likely influence the growing season of fish living in temperate lakes. The warm summer of 2018 in Sweden matches prognoses for normal summers at the end of the century and can thus be used to investigate the effect of temperature related factors on fish growth. READ MORE

3. 2. 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

4. 3. The effect of an anti-depressant on responses to predation in an isopod

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

   Author : Lisa Andrésen; [2019]
   Keywords : Anti-predation behaviour; Asellus aquaticus; fluoxetine; predation; waste-water;

   Abstract : A lot of chemicals and pharmaceutical substances used by humans, are released into the waste-water and end up in lakes and ponds. Further, because pharmaceutical substances are increasing worldwide, the problem increases. A very common human anti-depressant is fluoxetine which is found in lakes, ponds and even in the bodies of aquatic organisms. READ MORE

5. 4. Differentiation of dispersive traits under a fluctuating range distribution in Asellus aquaticus

   University essay from Linköpings universitet/Biologi; Linköpings universitet/Tekniska högskolan

   Author : Martin Brengdahl; [2014]
   Keywords : Asellus aquaticus; Dispersion; Dispersive traits; Habitats; Isopoda; Lake Tåkern; Spatial selection; Vegetation;

   Abstract : Knowledge about dispersion is of utmost importance for understanding populations’ reaction to changes in the environment. Expansion of a population range brings with it both spatial sorting and over time, spatial selection. This means that dispersion rates increases over time at the expanding edge. READ MORE

6. 5. How two different predators affect size distribution and behavior of an aquatic isopod

   University essay from Institutionen för fysik, kemi och biologi

   Author : Johanna Karlsson; [2011]
   Keywords : Asellus aquaticus; behavior; ecotypic divergence; predation; size selection;

   Abstract : The aquatic isopod Asellus aquaticus can in some lakes be found as two different ecotypes; one in the habitat dominated by reed and one in stonewort stands. These ecotypes have been shown to differ in size, color and behavior. The reed ecotype is larger, darker and more active compared to the stonewort ecotype. READ MORE