Browsing Brage IMR by Author "Solvang, Hiroko Kato"
Now showing items 1-19 of 19
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An improved methodology for quantifying causality in complex ecological systems
Solvang, Hiroko Kato; Subbey, Sam (Journal article; Peer reviewed, 2019)This paper provides a statistical methodology for quantifying causality in complex dynamical systems, based on analysis of multidimensional time series data of the state variables. The methodology integrates Granger’s ... -
Canine Mammary Tumours Are Affected by Frequent Copy Number Aberrations, including Amplification of MYC and Loss of PTEN
Borge, Kaja Sverdrup; Nord, Silje; Van Loo, Peter; Lingjærde, Ole Christian; Gunnes, Gjermund; Alnæs, Grethe I Grenaker; Solvang, Hiroko Kato; Luders, Torben; Kristensen, Vessela N.; Børresen-Dale, Anne-Lise; Lingaas, Frode (Journal article; Peer reviewed, 2015-05-08) -
Categorical data analysis using discretization of continuous variables to investigate associations in marine ecosystems
Solvang, Hiroko Kato; Imori, Shinpei; Biuw, Martin; Lindstrøm, Ulf Ove; Haug, Tore (Peer reviewed; Journal article, 2024)Understanding and predicting interactions between predators and prey and their environment are fundamental for understanding food web structure, dynamics, and ecosystem function in both terrestrial and marine ecosystems. ... -
Causal Drivers of Barents Sea Capelin(Mallotus villosus) Population Dynamics on Different Time Scales
Subbey, Sam; Solvang, Hiroko Kato; Frank, Anna-Simone Josefine (Journal article; Peer reviewed, 2017)The dynamics of marine populations are usually forced by biotic and abiotic factors occurring at different intensity levels and time scales. Deriving the time frame within which each factor has a causal influence is important ... -
Estimation and classification of temporal trends to support integrated ecosystem assessment
Solvang, Hiroko Kato; Planque, Benjamin (Peer reviewed; Journal article, 2020)We propose a trend estimation and classification (TREC) approach to estimating dominant common trends among multivariate time series observations. Our methods are based on two statistical procedures that includes trend ... -
Extending balance assessment for the generalized propensity score under multiple imputation
Frank, Anna-Simone; Matteson, David S.; Solvang, Hiroko Kato; Lupattelli, Angela; Nordeng, Hedvig Marie Egeland (Peer reviewed; Journal article, 2020)This manuscript extends the definition of the Absolute Standardized Mean Difference (ASMD) for binary exposure (M = 2) to cases for M > 2 on multiple imputed data sets. The Maximal Maximized Standardized Difference (MMSD) ... -
Gene expression analysis supports tumor threshold over 2.0 cm for T-category breast cancer
Solvang, Hiroko Kato; Frigessi, Arnoldo; Kaveh, Fatemeh; Riis, Margit; Luders, Torben; Bukholm, Ida Rashida Khan; Kristensen, Vessela N.; Andreassen, Bettina Kulle (Journal article; Peer reviewed, 2016-02-08)Tumor size, as indicated by the T-category, is known as a strong prognostic indicator for breast cancer. It is common practice to distinguish the T1 and T2 groups at a tumor size of 2.0 cm. We investigated the 2.0-cm rule ... -
INTEGRATING HAWKES PROCESS- ND BIOMASS MODELS TO CAPTURE IMPULSIVE POPULATION DYNAMICS
Subbey, Sam; Solvang, Hiroko Kato (Journal article, 2019)This paper presents a modeling framework that captures the impulsive biomass dynamics (bust-boom) of a fish stock. The framework is based on coupling a Hawkes-process model to a discrete-time, ages-structured population ... -
Investigating Population Genetic Structure in a Highly Mobile Marine Organism: The Minke Whale Balaenoptera acutorostrata acutorostrata in the North East Atlantic
Quintela, Maria; Skaug, Hans Julius; Øien, Nils; Haug, Tore; Seliussen, Bjørghild B.; Solvang, Hiroko Kato; Pampoulie, Christophe; Kanda, Naohisa; Pastene, Luis A.; Glover, Kevin A. (Journal article; Peer reviewed, 2014-09-30)Inferring the number of genetically distinct populations and their levels of connectivity is of key importance for the sustainable management and conservation of wildlife. This represents an extra challenge in the marine ... -
Measurement error model for the Norwegian common minke whale (Balaenoptera acutorostrata acutorostrata) surveys 2008-2013
Solvang, Hiroko Kato; Skaug, Hans Julius; Øien, Nils Inge (Peer reviewed; Journal article, 2021)A discrete measurement error model for radial distance and angle to detected objects in line transect surveys is considered. This approach directly quantifies the effect of measurement error on the estimated effective strip ... -
Panel-based Assessment of Ecosystem Condition of Norwegian Barents Sea Shelf Ecosystems
Siwertsson, Anna; Husson, Berengere; Arneberg, Per; Assmann, Karen; Assmy, Philipp; Aune, Magnus; Bogstad, Bjarte; Børsheim, Knut Yngve; Cochrane, Sabine K.J.; Daase, Malin; Fauchald, Per; Frainer, André; Fransson, Agneta; Hop, Haakon; Höffle, Hannes; Gerland, Sebastian; Ingvaldsen, Randi Brunvær; Jentoft, Sissel; Kovacs, Kit M.; Leonard, Deanna Marie; Lind, Sigrid; Lydersen, Christian; Pavlova, Olga; Peuchet, Laurene; Primicerio, Raul; Renaud, Paul Eric; Solvang, Hiroko Kato; Skaret, Georg; van der Meeren, Gro Ingleid; Wassmann, Paul; Øien, Nils Inge (Rapport fra havforskningen;2023 - 14, Research report, 2023)The System for Assessment of Ecological Condition, coordinated by the Norwegian Environment Agency, is intended to form the foundation for evidence-based assessments of the ecological condition of Norwegian terrestrial and ... -
Panel-based Assessment of Ecosystem Condition of Norwegian Barents Sea Shelf Ecosystems - Appendices
Siwertsson, Anna; Husson, Berengere; Arneberg, Per; Assmann, Karen; Assmy, Philipp; Aune, Magnus; Bogstad, Bjarte; Børsheim, Knut Yngve; Cochrane, Sabine K.J.; Daase, Malin; Fauchald, Per; Frainer, André; Fransson, Agneta; Hop, Haakon; Höffle, Hannes; Gerland, Sebastian; Ingvaldsen, Randi Brunvær; Jentoft, Sissel; Kovacs, Kit M.; Leonard, Deanna Marie; Lind, Sigrid; Lydersen, Christian; Pavlova, Olga; Peuchet, Laurene; Primicerio, Raul; Renaud, Paul Eric; Solvang, Hiroko Kato; Skaret, Georg; van der Meeren, Gro Ingleid; Wassmann, Paul; Øien, Nils Inge (Rapport fra havforskningen;2023 - 15, Research report, 2023) -
Panel-based Assessment of Ecosystem Condition of the North Sea Shelf Ecosystem
Arneberg, Per; Husson, Berengere; Siwertsson, Anna; Albretsen, Jon; Børsheim, Knut Yngve; Denechaud, Côme; Durant, Joël; Falkenhaug, Tone; Fauchald, Per; Opdal, Anders Martin Frugård; Jentoft, Sissel; Johannessen, Tore; Johnsen, Espen; Jones, Elizabeth Marie; Kvamme, Cecilie; Ljungström, Anna Jeja Gabriella; Buhl-Mortensen, Pål; Reecht, Yves; Solvang, Hiroko Kato; Skogen, Morten D.; Slotte, Aril; Strand, Espen; Søvik, Guldborg; van der Meeren, Gro Ingleid (Rapport fra havforskningen;2023 - 17, Research report, 2023)The System for Assessment of Ecological Condition, coordinated by the Norwegian Environment Agency, is intended to form the foundation for evidence-based assessments of the ecological condition of Norwegian terrestrial and ... -
Panel-based Assessment of Ecosystem Condition of the North Sea Shelf Ecosystem - Appendices
Arneberg, Per; Husson, Berengere; Siwertsson, Anna; Albretsen, Jon; Børsheim, Knut Yngve; Denechaud, Côme; Durant, Joël; Falkenhaug, Tone; Fauchald, Per; Opdal, Anders Martin Frugård; Jentoft, Sissel; Johannessen, Tore; Johnsen, Espen; Jones, Elizabeth Marie; Kvamme, Cecilie; Ljungström, Anna Jeja Gabriella; Buhl-Mortensen, Pål; Reecht, Yves; Solvang, Hiroko Kato; Skogen, Morten D.; Slotte, Aril; Strand, Espen; Søvik, Guldborg; van der Meeren, Gro Ingleid (Rapport fra havforskningen;2023 - 18, Research report, 2023) -
Panel-based Assessment of Ecosystem Condition of the Norwegian Sea Pelagic Ecosystem
Arneberg, Per; Siwertsson, Anna; Husson, Berengere; Børsheim, Knut Yngve; Fauchald, Per; Hjøllo, Solfrid Sætre; Høines, Åge Sigurd; Jones, Elizabeth Marie; Melle, Webjørn Raunsgård; Nøttestad, Leif; Planque, Benjamin; Skagseth, Øystein; Slotte, Aril; Solvang, Hiroko Kato; Stenevik, Erling Kåre (Rapport fra havforskningen;2023 -16, Research report, 2023)The System for Assessment of Ecological Condition, coordinated by the Norwegian Environment Agency, is intended to form the foundation for evidence-based assessments of the ecological condition of Norwegian terrestrial and ... -
Revision of the Norwegian-Russian Barents Sea Ecosystem Survey (BESS) - The current status and revision of the Norwegian sector of the BESS survey
Eriksen, Elena; Johansen, Geir Odd; van der Meeren, Gro Ingleid; Mørk, Herdis Langøy; Karlson, Stine; Bagøien, Espen; Bao, Miguel; Berg, Erik; Bogstad, Bjarte; Boitsov, Stepan; Cipriani, Paolo; Dalpadado, Padmini; Danielsen, Hanna Ellerine Helle; Giulietti, Lucilla; Hallfredsson, Elvar Halldor; Heldal, Hilde Elise; Hjelset, Ann Merete; Holmin, Arne Johannes; Höffle, Hannes; Johannesen, Edda; Jørgensen, Lis Lindal; Levsen, Arne; Skaret, Georg; Solvang, Hiroko Kato; Storesund, Julia Endresen; Strand, Espen; Vee, Ida; Vollen, Tone; Wienerroither, Rupert; Windsland, Kristin; Zimmermann, Fabian; Øien, Nils Inge (Rapport fra havforskningen;2024 - 34, Research report, 2024)An effort to streamline the survey activity at the Institute of Marine Research (IMR) was initiated by the IMR leadership in December 2022. The purpose of this exercise is to balance the costs of the total cruise effort ... -
Successive extreme climatic events lead to immediate, large-scale, and diverse responses from fish in the Arctic
Husson, Berengere; Lind, Sigrid; Fossheim, Maria; Solvang, Hiroko Kato; Skern-Mauritzen, Mette; Pecuchet, Laurene; Ingvaldsen, Randi Brunvær; Dolgov, Andrey V.; Primicerio, Raul (Peer reviewed; Journal article, 2022)The warming trend of the Arctic is punctuated by several record-breaking warm years with very low sea ice concentrations. The nature and reversibility of marine ecosystem responses to these multiple extreme climatic events ... -
trec: An R package for trend estimation and classification to support integrated ecosystem assessment of the marine ecosystem and environmental factors
Solvang, Hiroko Kato; Ohishi, Mineaki (Peer reviewed; Journal article, 2023)Solvang and Planque [ICES Journal of Marine Science, 77, pp.2529–2540, (2020)] provided a trend estimation and classification (TREC) approach to estimating dominant common trends among multivariate time series observations. ... -
Whole genome resequencing reveals diagnostic markers for investigating global migration and hybridization between minke whale species
Malde, Ketil; Seliussen, Bjørghild Breistein; Sanchez, Maria Quintela; Dahle, Geir; Besnier, Francois; Skaug, Hans J.; Øien, Nils Inge; Solvang, Hiroko Kato; Haug, Tore; Skern-Mauritzen, Rasmus; Kanda, Naohisa; Pastene, Luis A.; Jonassen, Inge; Glover, Kevin (Peer reviewed; Journal article, 2017)