Essays about: "fish biomass"
Showing result 1 - 5 of 52 essays containing the words fish biomass.
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1. The effects of fishing on stability of a food web under climate warming
University essay from SLU/Dept. Of Aquatic ResourcesAbstract : Predicting the effects of fishing in a warmer environment caused by climate change requires knowledge of what trophic level is fished on, the physiological effects of temperature on fish, and how these two affect ecological interactions. Both temperature and fishing are known to affect the stability of food webs in several ways. READ MORE
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2. 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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3. Change in uptake and transfer of zinc in the food chain when predatory fish disappear from the system
University essay from Uppsala universitet/Institutionen för geovetenskaperAbstract : There is a widespread distribution of possibly toxic heavy metals, such as zinc, in aquatic ecosystems. Simultaneously aquatic food webs are changing due to declining predatory fish stocks. READ MORE
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4. Cultivation of Yarrowia lipolytica on a hydrolysate based on food waste
University essay from SLU/Department of Molecular SciencesAbstract : Interest in replacing fish oil and fish meal as fish feed ingredients with more socially, environmen-tally, and economically sustainable alternatives has increased in recent years. One such alternative could be the use of yeast biomass. READ MORE
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5. Evaluation of restoration efforts in Dalälven - conditions for survival rate of Salmo trutta and Salmo salar
University essay from Uppsala universitet/Institutionen för biologisk grundutbildningAbstract : Rivers are among the most anthropogenically affected ecosystems in the world by irrigation, transportation, channelizing, and hydropower. Habitat restorations have become a popular method to restore the heterogeneity and complexity of rivers aiming for improvement of biodiversity. READ MORE