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Showing result 1 - 5 of 16 essays matching the above criteria.
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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. Estimation of dissolved organic carbon from inland waters using remote sensing data and machine learning
University essay from Lunds universitet/Institutionen för naturgeografi och ekosystemvetenskapAbstract : This thesis presents the first attempt to estimate Dissolved Organic Carbon (DOC) in inland waters over a large-scale area using satellite data and machine learning (ML) methods. Four ML approaches, namely Random Forest Regression (RFR), Support Vector Regression (SVR), Gaussian Process Regression (GPR), and a Multilayer Backpropagation Neural Network (MBPNN) were tested to retrieve DOC using a filtered version of the recently published open source AquaSat dataset with more than 16 thousand samples across the continental US matched with satellite data from Landsat 5, 7 and 8 missions. READ MORE
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3. The Untold Story of Baba Island : Sustainable Livelihood: The Revival of Fishing Community andEcology of Baba Island, Karachi
University essay from KTH/ArkitekturAbstract : Once covered by dense mangrove forest, Baba Island was inclusive of a group of Islands protecting the Kolachi settlement from storms and invasion. Kolachi Jo Goth (fisherman’s village) transformed into the present-day megacity of Karachi when the British conquered and established it as a harbour for trade. READ MORE
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4. Temporal Trends in Dissolved Inorganic Carbon in a Swedish Boreal Catchment
University essay from Uppsala universitet/Institutionen för geovetenskaperAbstract : Inland waters are important systems for transforming, storing and transporting carbon along the aquatic continuum, but also by emitting carbon dioxide (CO2) and methane (CH4) to the atmosphere. In light of the last decades observed increase in dissolved organic carbon (DOC) in many inland waters across the northern hemisphere, a logical question arise whether other aquatic carbon species display similar trends. READ MORE
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5. Traits of peat- and upland-derived stream dissolved organic carbon in the permafrost region around Abisko, northern Sweden
University essay from Lunds universitet/Institutionen för naturgeografi och ekosystemvetenskapAbstract : Climate change-induced thawing of permafrost mobilizes previously frozen carbon of high potential reactivity, thereby, fuelling microbiological production of greenhouse gases. For this work, an analysis of the quantity, quality, and bioreactivity of DOC in streams from the Stordalen discontinuous permafrost catchment was carried out with stream water samples during the relatively warm summer of 2018. READ MORE