Blar i NTNU Open på forfatter "Ardelan, Murat Van"
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From the Ocean to the Lab—Assessing Iron Limitation in Cyanobacteria: An Interface Paper
Hunnestad, Annie Vera; Vogel, Anne Ilse Maria; Digernes, Maria Guadalupe; Armstrong, Evelyn; Ardelan, Murat Van; Hohmann-Marriott, Martin Frank (Peer reviewed; Journal article, 2020)Iron is an essential, yet scarce, nutrient in marine environments. Phytoplankton, and especially cyanobacteria, have developed a wide range of mechanisms to acquire iron and maintain their iron-rich photosynthetic machinery. ... -
Influence of siderophore-iron complexation on the growth of the diatom Skeletonema costatum: a mass spectroscopy approach
Peterson, Claire Katja (Master thesis, 2016)The growth of the diatom Skeletonema costatum was monitored using in vivo fluorescence under concentration gradients of desferrioxamine B (DFB) and enterobactin to test the siderophores effect on iron bioavailability. ... -
Integrating scientific knowledge, data and stakeholder perceptions for decision support
de Kok, Jean Luc; Viaene, Peter; Vermeiren, Karolien; Van der Meulen, Maarten; Tiller, Rachel Gjelsvik; Ardelan, Murat Van; Bailey, Jennifer L.; Thorpe, Robert; Beecham, Jonathan; Vanleeuwen, Sonja; Thingstad, T. Frede; Tsagaraki, Tatiana; Richards, Russell; Bizsel, Can; Salgado, Hugo (Chapter, 2016)The marine food web is considered to be a factor of key importance for the global carbon balance. The concept of the ‘Biological Pump’ refers to the mechanism by which CO2 fixed by photosynthesis is transferred to the deep ... -
Interdisciplinarity as an Emergent Property: The Research Project “CINTERA” and the Study of Marine Eutrophication
Bailey, Jennifer L.; Ardelan, Murat Van; Hernández, Klaudia L.; González, Humberto E.; Iriarte, Jose Luis; Olsen, Lasse Mork; Salgado, Hugo; Tiller, Rachel Gjelsvik (Journal article; Peer reviewed, 2015)Research projects combining different disciplines are increasingly common and sought after by funding agencies looking for ways to achieve environmental, social, and economic sustainability. Creating and running a truly ... -
Iron Acquisition in Cynobacteria Synechococcus sp. PCC 7002 Culture
Pehlivan, Ayten (Master thesis, 2018)Iron is an essential micronutrient for the growth and health of phytoplankton and low overall iron concentrations in the High Nutrient Low Chlorophyll (HNLC) zones in the ocean have been reported. Cyanobacteria is one of ... -
IRON AS A DRIVING FORCE OF LIFE: INVESTIGATING EFFECTS OF IRON SOURCE ON PHYSIOLOGICAL FACTORS AND BIOTIC IRON RELATIONSHIPS IN SYNECHOCOCCUS SP. PCC 7002
Hunnestad, Annie Vera (Doctoral theses at NTNU;2021:347, Doctoral thesis, 2021)Iron is one of the most abundant elements in the Earth’s crust, and yet it is a limiting factor for primary production in large parts of the world’s oceans. This is due to the low solubility of iron throughout the water ... -
Iron cycling in a mesocosm experiment in a north Patagonian fjord: Potential effect of ammonium addition by salmon aquaculture
Sanchez, Nicolas; Bizsel, Nyhayet; Iriarte, Jose Luis; Olsen, Lasse Mork; Ardelan, Murat Van (Journal article; Peer reviewed, 2019)Salmon aquaculture in Chile has been a rapidly growing industry, generating increasing inputs of organic matter and inorganic nutrients into the ecosystem. We studied the potential impacts of ammonium input by this industry ... -
Iron Speciation and Physiological Analysis Indicate that Synechococcus sp. PCC 7002 Reduces Amorphous and Crystalline Iron Forms in Synthetic Seawater Medium
Hunnestad, Annie Vera; Vogel, Anne Ilse Maria; Digernes, Maria Guadalupe; Ardelan, Murat Van; Hohmann-Marriott, Martin Frank (Peer reviewed; Journal article, 2020)Cyanobacteria have high iron requirements due to iron-rich photosynthetic machineries. Despite the high concentrations of iron in the Earth’s crust, iron is limiting in many marine environments due to iron’s low solubility. ... -
Macronutrient Distribution in Relation to Waste Emission from Aquaculture Activities: A field study in Trondheimsfjorden
Solli, Cathrine Malvik (Master thesis, 2013)The production of farmed fish has increased globally almost 12-fold since the 1980s. And in 2010, aquaculture production food fish reached an all-time high at 60 million tonnes. This activity releases large amounts of ... -
Micronutrient Distribution in Relation to Waste Emission from Aquaculture Activities: A field study in Trondheimsfjorden
Bårdsnes Horgheim, Jorunn (Master thesis, 2013)Bioactive trace metals, or micronutrients, are crucial as cofactors in enzymes used in various macronutrient cycles in marine systems. Aquaculture releases large quantities of macronutrients, which may lead to a shift in ... -
Microplastic Pollution in the Volta River Delta’s Blue Carbon Mangrove Ecosystem in Ghana
Onsrud, Arne (Master thesis, 2023)Denne oppgaven har tatt del i BC5 og Sailing 4 Science. BC5 eller "Building Capacity to Crosslink Coastal Pollution with Climate Change" er et prosjekt finansert av Norad under programmet "Climate change and Natural ... -
Mobility of Elements at the Sediment Water Interface in a Simulated Sub-Seabed CO2 Seepage Site
Faltynkova, Andrea (Master thesis, 2018)Carbon capture and storage (CCS) is an important technology for the mitigation of global warming. However, prior research has indicated that CO2 escape through marine sediment can lead to the acidification of sediment pore ... -
Particulate Iron Bioavailability to Phytoplankton in Antarctic and Arctic Waters: Effects of Ocean Acidification and the Organic Ligand EDTA
Zhao, Liang (Master thesis, 2021)Particulate iron (PFe) usually is not considered as a bioavailable iron fraction to phytoplankton. In this study we tested the bioavailability of one PFe species, goethite (α-FeO(OH)), to phytoplankton community in Southern ... -
Present and Past‐Millennial Eutrophication in the Gulf of Gdańsk (Southern Baltic Sea)
Szymczak-Zyla, Malgorzata; Krajewska, Magdalena; Witak, Małgorzata; Ciesielski, Tomasz Maciej; Ardelan, Murat Van; Jenssen, Bjørn Munro; Goslar, Tomasz; Winogradow, Aleksandra; Filipkowska, Anna; Lubecki, Ludwik; Zamojska, Anna; Kowalewska, Grażyna (Peer reviewed; Journal article, 2019)Eutrophication is manifested by increased primary production leading to oxygen depletion in near‐bottom water and toxic cyanobacteria blooms. This is an important contemporary problem of the Baltic Sea and many other coastal ... -
Responses in the bacterial community structure to waste nutrients from aquaculture: an in situ microcosm experiment in a Chilean fjord
Olsen, Lasse Mork; Hernandez, Klaudia; Ardelan, Murat Van; Iriarte, Jose Luis; Bizsel, Can; Olsen, Yngvar (Journal article; Peer reviewed, 2017)Chilean salmon farms release inorganic nutrients excreted by the fish into the surrounding water in Patagonian fjords. The objective of this experiment from the Comau Fjord (42.2° S) in southern Chile was to study how ... -
Responses in the microbial food web to increased rates of nutrient supply in a southern Chilean fjord: Possible implications of cage aquaculture
Olsen, Lasse Mork; Hernandez, Klaudia; Ardelan, Murat Van; Iriarte, Jose Luis; Sanchez, Nicolas; Gonzalez, Humberto E.; Tokle, Nils Egil; Olsen, Yngvar (Journal article; Peer reviewed, 2014)ABSTRACT: Cage fish farms release the inorganic nutrients ammonium (NH4) and phosphate (PO4) into the surrounding water. The objectives of this experiment from the Comau fjord (42.2° S) in southern Chile was to study how ... -
Stakeholder Perceptions of Links between Environmental Changes to their Socio-Ecological System and their Adaptive Capacity in the Region of Troms, Norway
Tiller, Rachel Gjelsvik; de Kok, Jean-Luc; Vermelren, Karolien; Richards, Russell; Ardelan, Murat Van; Bailey, Jennifer L. (Journal article; Peer reviewed, 2016)Climate change affects the marine environment at all levels of governance. At a global level, researchers expect the projected increase in sea surface temperature to facilitate large changes in the marine food web, which ... -
Temporal dynamics of carbon sequestration in coastal North Atlantic fjord system as seen through dissolved organic matter characterisation
Mathew, K Avarachen; Ardelan, Murat Van; Villa Gonzalez, Susana; Vadstein, Olav; Sajith Vezhapparambu, Veena; Leiknes, Øystein; Mankettikkara, Rahman; Olsen, Yngvar (Peer reviewed; Journal article, 2021)Fjord systems in higher latitudes are unique coastal water ecosystems that facilitate the study of dissolved organic matter (DOM) dynamics from surface to deeper waters. The current work was undertaken in the Trondheim ... -
The impact of redox reactions on the N- and P-cycle in recirculating aquaculture system
Estensen, Bjørn Anda (Master thesis, 2021)Redox reaksjoner er viktige for de kjemiske egenskapene til vann. Det er blitt økt interesse for den økende delen av havet med lave konsentrasjoner av oppløst oksygen og hvordan redox reaksjonene kan påvirke, eller bli ... -
The Influence of Sediment Composition on Trace Element Mobilization in a CO2 Leakage Scenario
Stenger, Simon Ross (Master thesis, 2019)Karbon fangst og lagring (CCS) er et sentralt redskap i arbeidet med å redusere utslipp av drivhusgasser. CCS-prosjekter imidlertid blitt møtt med motstand på grunn av bekymringer rundt mulig lekkasje til det omkringliggende ...