Sökning: "Lars Tranvik"

Visar resultat 16 - 20 av 20 avhandlingar innehållade orden Lars Tranvik.

1. 16. Characterisation of natural dissolved organic matter with liquid chromatography and high resolution mass spectrometry

   Författare :Claudia Patriarca; Jonas Bergquist; Lars Tranvik; Per J.R. Sjöberg; Jeffrey A. Hawkes; Norbert Hertkorn; Uppsala universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; aquatic carbon cycle; dissolved organic matter; DOM; high resolution mass spectrometry; online liquid chromatography; organic matter characterization; Kemi med inriktning mot analytisk kemi; Chemistry with specialization in Analytical Chemistry;

   Sammanfattning : Dissolved organic matter (DOM) is one of the most heterogeneous and complex mixture on Earth. DOM plays a crucial role in biogeochemical processes on the global scale and it is essential to sustain and regulate the biological processes in aquatic ecosystems. LÄS MER

3. 17. Characterization of dissolved organic matter : An analytical challenge

   Författare :Claudia Patriarca; Jonas Bergquist; Lars Tranvik; Jeffrey A. Hawkes; Jonathan Martin; Uppsala universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Kemi med inriktning mot analytisk kemi; Chemistry with specialization in Analytical Chemistry;

   Sammanfattning : Dissolved organic matter (DOM) is the prevalent form of organic carbon in most aquatic environments. It is an ultra-complex mixture that plays a crucial role in global carbon cycling. Despite its importance it is still poorly understood due to its extreme heterogeneity and intricacy. LÄS MER

4. 18. Diversity and Ecosystem Functioning : Redundancy and Resilience in Freshwater Bacterial Communities

   Författare :Hannes Peter; Lars J. Tranvik; Eva S. Lindström; Silke Langenheder; Nelson G. Hairston; Uppsala universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; biodiversity; ecosystem functioning; bacteria; fresh water; biofilms; multifunctionality; ecological networks; perturbation; fragility; Biologi med inriktning mot limnologi; Biology with specialization in Limnology;

   Sammanfattning : Bacteria are immensely diverse and hold key-positions in essentially all biogeochemical cycles. In freshwater ecosystems, bacteria degrade and mineralize organic compounds, linking the pool of dissolved organic matter to higher trophic levels. LÄS MER

5. 19. Carbon Dioxide Supersaturation in Lakes – Causes, Consequences and Sensitivity to Climate Change

   Författare :Sebastian Sobek; Lars J. Tranvik; Yves Prairie; Uppsala universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Biology; carbon dioxide; boreal lakes; respiration; dissolved organic carbon; climate change; Biologi; Biology; Biologi;

   Sammanfattning : The global carbon cycle is intimately linked with the earth’s climate system. Knowledge about carbon cycling in the biosphere is therefore crucial for predictions of climate change. LÄS MER

7. 20. Flocculation of Allochthonous Dissolved Organic Matter – a Significant Pathway of Sedimentation and Carbon Burial in Lakes

   Författare :Eddie von Wachenfeldt; Lars Tranvik; David Bastviken; John Downing; Uppsala universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; flocculation; dissolved organic carbon; allochthonous; carbon sequestration; carbon cycle; boreal lakes; Freshwater ecology; Limnisk ekologi;

   Sammanfattning : Inland waters receive substantial amounts of organic carbon from adjacent watersheds. Only about half of the carbon exported from inland waters reaches the oceans, while the remainder is lost en route. This thesis identifies flocculation as an important and significant fate of carbon in the boreal landscape. LÄS MER