Essays about: "stabila isotoper"

Showing result 1 - 5 of 15 essays containing the words stabila isotoper.

1. 1. 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 Studies

   Author : Emmy Nyberg; [2022]
   Keywords : Aquaculture; wild fish; fat content; protein content; stable isotopes;

   Abstract : 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

3. 2. Påverkar klimatförändringen trofisk fraktionering av C och N mellan växt och konsument i sötvattenekosystem?

   University essay from SLU/Dept. of Aquatic Sciences and Assessment

   Author : Evelina Hiltunen; [2018]
   Keywords : chironomus riparius; stable isotopes; trophic fractionation; climate change; oligotrophication;

   Abstract : Temperaturhöjningen som en följd av klimatförändringen väntas gå fortast och bli störst på Nord- och Sydpolen. När lufttemperaturen stiger, stiger även vattentemperaturer och vegetationsgränser flyttas. Detta skulle kunna vara orsaken till den näringsutarmning som kan ses i många arktiska sjöar. READ MORE

4. 3. Quaternary Arctic foraminiferal isotopes: species reliability and palaeoceanographic application

   University essay from Stockholms universitet/Institutionen för geologiska vetenskaper

   Author : Aron Varhelyi; [2018]
   Keywords : Palaeoceanography; Arctic; foraminifera; stable isotopes; Paleoceanografi; Arktis; foraminiferer; stabila isotoper;

   Abstract : To investigate whether foraminiferal stable isotope (δ18O/δ13C) variations have potential as a chronostratigraphic tool in the Arctic Ocean, this thesis presents new δ18O/δ13C data from five marine sediment cores. Three of those are downcore analyses (PS92/54-1; TC/PC-03; PC-07) and the remaining two are core top analyses (PC-04; PC-08). READ MORE

5. 4. Submarine Alteration of Seamount Rocks in the Canary Islands: Insights from Mineralogy, Trace Elements, and Stable Isotopes

   University essay from Uppsala universitet/Institutionen för geovetenskaper

   Author : Aduragbemi Oluwatobi Sofade; [2018]
   Keywords : Canary Islands; seamounts; submarine alteration; trace elements; nannofossils; Kanarieöarna; djuphavsberg; undervattensomvandling; spårämnen; nanofossiler;

   Abstract : Seamounts play an important role in facilitating the exchange of elements between the oceanic lithosphere and the overlying seawater. This water-rock interaction is caused by circulating seawater and controls the chemical exchange in submarine and sub-seafloor rocks. READ MORE

6. 5. Forbidden oxygen in the Milky Way disk

   University essay from Lunds universitet/Astronomi - Genomgår omorganisation

   Author : Asma Sahli; [2017]
   Keywords : Physics and Astronomy;

   Abstract : Oxygen is produced inside massive stars and dispersed into the interstellar medium mainly through type II supernovae explosions. This element, which is the third most abundant one in the Universe, plays an important role in tracing the Galactic chemical history and evolution. READ MORE