Essays about: "Aquatic food web"
Showing result 1 - 5 of 22 essays containing the words Aquatic food web.
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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. 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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3. Newly inundated forest landscapes - hotspots for mercury in water and benthic fauna
University essay from SLU/Dept. of Aquatic Sciences and AssessmentAbstract : Mercury (Hg) is a widespread contaminant in high-latitude aquatic ecosystems, where it can undergo microbial transfor-mation into toxic methylmercury (MeHg). Due to its chemical properties, MeHg tends to accumulate in the aquatic food chain and will eventually end up in predatory species at the top of the terrestrial food web. READ MORE
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4. Microplastics in food webs- occurrence in Lake Vänern brown trout (Salmo trutta) and its main prey
University essay from Karlstads universitet/Fakulteten för hälsa, natur- och teknikvetenskap (from 2013)Abstract : Over the past decade, research on microplastic pollution has gained significant attention. Research regarding microplastic occurrence in freshwater fish, however is still scarce. While possible pathways have been investigated, passive transfer via ingestion of prey, and possible bioaccumulation in different organs remains relatively unstudied. READ MORE
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5. P-cycling in sub-Arctic lakes – the importance of sediment release and retention
University essay from SLU/Dept. of Aquatic Sciences and AssessmentAbstract : Oligotrophication is generally caused by a decreased nutrient availability, usually due to phosphorous limitation. This is a phenomenon impacting the entire food web and at worst causing cascading alterations within an ecosystem. Lakes of the Northern Hemisphere have lately been documented to be subjected to oligotrophication (e.g. READ MORE