Essays about: "parr"
Showing result 1 - 5 of 15 essays containing the word parr.
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1. Effects of summer peaks on brown trout and Atlantic salmon growth and survival in hydropower-regulated Gullspång River
University essay from Karlstads universitet/Fakulteten för hälsa, natur- och teknikvetenskap (from 2013)Abstract : Daily demands for electrical power are met through sub-daily release of turbined water in the form of hydropeaking. Hydropeaking’s changes to stream flow are listed as a threat to biodiversity in river ecosystems as it causes rapid habitat alteration such as increased depth and velocity, affecting the species living downstream. READ MORE
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2. Dispersal and habitat use of juvenile brown trout (Salmo trutta) following egg stocking : -A case study in the river Rotälven, Sweden
University essay from Karlstads universitet/Institutionen för miljö- och livsvetenskaper (from 2013)Abstract : Egg stocking in rivers and streams is a common measure to support and re-introduce salmonid populations. To ensure the success of egg stocking programs, knowledge of the early life stages of juveniles including dispersal ability and habitat preferences of fry is a prerequisite. READ MORE
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3. Future management of Laisriver Brown trout : what life history and enhancement strategy should be prioritized?
University essay from SLU/Dept. of Wildlife, Fish and Environmental StudiesAbstract : The life history and coexistence of subpopulations of brown trout in the same drainage area are relatively well known. The three forms of trout; sea-run, lake-run and resident, can all be present in the same location at some period of their life cycle, e.g. during the parr stage or at spawning. READ MORE
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4. Smoltification status of Atlantic salmon (Salmo salar) in relation to migratory success and migration speed in a regulated river
University essay from Karlstads universitetAbstract : There is a concern that the ecosystems around the world are suffering from fragmentation. Ecosystems such as rivers have lost their connectivity to a large extent due to hydroelectric dams with no or insufficient passways for the natural flow of organisms, matter and energy. READ MORE
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5. Liquefaction of Softwood Bark towards Biochemicals and Biofuels
University essay from Luleå tekniska universitet/Institutionen för samhällsbyggnad och naturresurserAbstract : The energy consumption in the world is increasing at the same time as the fossil fuel resources are limited. This is causing a rising interest in renewable energy sources over the world. To reduce dependency on fossil fuel sources biomass is an excellent alternative. READ MORE