Essays about: "abborre"
Showing result 1 - 5 of 17 essays containing the word abborre.
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1. Ecological impacts of dam removal in Swedish inland waters : Effects on water chemistry and fish demography
University essay from Karlstads universitet/Fakulteten för hälsa, natur- och teknikvetenskap (from 2013)Abstract : Dams play an important role in our society, but their negative impacts on aquatic ecosystems have led to a need for conservation efforts to mitigate the negative effects. In some instances, dam removal has been suggested to be the most economically and ecologically beneficial restoration method to improve longitudinal connectivity. READ MORE
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2. Aquaculture and its effect on the wild fish resource in a Swedish lake : An evaluation of changes in fat content, protein content and trophic niche
University essay from SLU/Dept. of Wildlife, Fish and Environmental StudiesAbstract : Fish is nutritious and important as a food source for many people. It contains high levels of protein, important omega-3 fatty acids as well as micronutrients. For a sustainable fish consumption, aquaculture is needed but it can affect nearby ecosystems in many ways. READ MORE
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3. Hydrological assessment and water management study in Norra Bunn With a focus on fish stock conservation
University essay from Lunds universitet/Avdelningen för Teknisk vattenresursläraAbstract : Fokus för denna studie är att undersöka statusen för Norra Bunnsjön och de utmaningar den står inför idag med betoning på vattenresurshantering för ett bättre bevarande av fiskbestånden. För att uppnå målen genomfördes litteraturgranskningar, datainsamling från olika källor och vattenprovtagningar på plats. READ MORE
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4. Development of northern pike (Esox lucius) populations in the Baltic Sea, and potential effects of grey seal (Halichoerus grypus) predation
University essay from SLU/Dept. Of Aquatic ResourcesAbstract : Worldwide, marine mammal populations are increasing after considerable efforts to turn the downward trends caused by hunting, accidental mortality and pollution. The ecosystem effects from the increases of these top predators may be pronounced, but are in most cases poorly known. READ MORE
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5. Beteendeeffekter av antidepressivt läkemedel på abborre (Perca fluviatilis) : socialt och aktivt beteende undersökts genom att kombinera behandlingar med oxazepam, temperatur och predationstryck
University essay from SLU/Dept. of Wildlife, Fish and Environmental StudiesAbstract : Användandet av antidepressiva och ångestdämpande läkemedel, som ex. oxazepam, ökar i samhället vilket kan leda till höga halter i våra vattendrag. Tidigare studier har visat att abborrar som blir utsatta för miljörelevanta koncentrationer av oxazepam ändrar sitt beteende. READ MORE