Kristina Øie Kvile

• Dong, Kaixing; Kvile, Kristina Øie; Stenseth, Nils Christian & Stige, Leif Christian (2020). Associations among temperature, sea ice and phytoplankton bloom dynamics in the Barents Sea. Marine Ecology Progress Series.  ISSN 0171-8630.  635, s 25- 36 . doi: 10.3354/meps13218
• Kvile, Kristina Øie; Altin, Dag; Thommesen, Lotte & Titelman, Emma Rebecka Josefin (2020). Predation risk alters life history strategies in an oceanic copepod. Ecology.  ISSN 0012-9658.  102(1) . doi: 10.1002/ecy.3214 Fulltekst i vitenarkiv. Vis sammendrag

  The ubiquitous oceanic copepod Calanus finmarchicus is the major link between primary producers and important fish stocks in the North Atlantic Ocean and adjacent seas. Despite over a century of research on growth and development of this key species, the effect of predation risk on these processes remains elusive. We tested how food level and chemical cues from a fish predator influence growth and development of C. finmarchicus, using a predator naïve laboratory population. Copepods reached adult stage earlier both in response to high food and to predator cues in our experiment. High food also increased growth and lipid accumulation. In contrast, perceived predation risk triggered reduced size and lipid fullness, indicating a decoupling of growth and development rates. Our results demonstrate that chemical predator cues can influence life history strategies in C. finmarchicus, and suggest that present and future patterns in oceanic zooplankton size and population dynamics may also reflect differences in predation risk.

• Romagnoni, Giovanni; Kvile, Kristina Øie; Dagestad, Knut Frode; Eikeset, Anne Maria; Kristiansen, Trond; Stenseth, Nils Christian & Langangen, Øystein (2020). Influence of larval transport and temperature on recruitment dynamics of North Sea cod (Gadus morhua) across spatial scales of observation. Fisheries Oceanography.  ISSN 1054-6006.  29(4), s 324- 339 . doi: 10.1111/fog.12474 Fulltekst i vitenarkiv. Vis sammendrag

  The survival of fish eggs and larvae, and therefore recruitment success, can be critically affected by transport in ocean currents. Combining a model of early‐life stage dispersal with statistical stock–recruitment models, we investigated the role of larval transport for recruitment variability across spatial scales for the population complex of North Sea cod (Gadus morhua). By using a coupled physical–biological model, we estimated the egg and larval transport over a 44‐year period. The oceanographic component of the model, capable of capturing the interannual variability of temperature and ocean current patterns, was coupled to the biological component, an individual‐based model (IBM) that simulated the cod eggs and larvae development and mortality. This study proposes a novel method to account for larval transport and success in stock–recruitment models: weighting the spawning stock biomass by retention rate and, in the case of multiple populations, their connectivity. Our method provides an estimate of the stock biomass contributing to recruitment and the effect of larval transport on recruitment variability. Our results indicate an effect, albeit small, in some populations at the local level. Including transport anomaly as an environmental covariate in traditional stock–recruitment models in turn captures recruitment variability at larger scales. Our study aims to quantify the role of larval transport for recruitment across spatial scales, and disentangle the roles of temperature and larval transport on effective connectivity between populations, thus informing about the potential impacts of climate change on the cod population structure in the North Sea.

• Skottene, Elise; Tarrant, Ann M.; Altin, Dag; Olsen, Rolf Erik; Choquet, Marvin & Kvile, Kristina Ø (2020). Lipid metabolism in Calanus finmarchicus is sensitive to variations in predation risk and food availability. Scientific Reports.  ISSN 2045-2322.  10 . doi: 10.1038/s41598-020-79165-6 Fulltekst i vitenarkiv. Vis sammendrag

  Late developmental stages of the marine copepods in the genus Calanus can spend extended periods in a dormant stage (diapause) that is preceded by the accumulation of large lipid stores. We assessed how lipid metabolism during development from the C4 stage to adult is altered in response to predation risk and varying food availability, to ultimately understand more of the metabolic processes during development in Calanus copepods. We used RNA sequencing to assess if perceived predation risk in combination with varied food availability affects expression of genes associated with lipid metabolism and diapause preparation in C. finmarchicus. The lipid metabolism response to predation risk differed depending on food availability, time and life stage. Predation risk caused upregulation of lipid catabolism with high food, and downregulation with low food. Under low food conditions, predation risk disrupted lipid accumulation. The copepods showed no clear signs of diapause preparation, supporting earlier observations of the importance of multiple environmental cues in inducing diapause in C. finmarchicus. This study demonstrates that lipid metabolism is a sensitive endpoint for the interacting environmental effects of predation pressure and food availability. As diapause may be controlled by lipid accumulation, our findings may contribute towards understanding processes that can ultimately influence diapause timing.

• Kvile, Kristina Øie; Ashjian, Carin & Ji, Rubao (2019). Pan-Arctic Depth Distribution of Diapausing Calanus Copepods. The Biological Bulletin.  ISSN 0006-3185.  237(2), s 76- 89 . doi: 10.1086/704694 Fulltekst i vitenarkiv.
• Kvile, Kristina Øie; Ashjian, Carin; Feng, Zhixuan; Zhang, Jinlun & Ji, Rubao (2018). Pushing the limit: Resilience of an Arctic copepod to environmental fluctuations. Global Change Biology.  ISSN 1354-1013.  24(11), s 5426- 5439 . doi: 10.1111/gcb.14419 Vis sammendrag

  Life history strategies such as multiyear life cycles, resting stages, and capital breeding allow species to inhabit regions with extreme and fluctuating environmental conditions. One example is the zooplankton species Calanus hyperboreus, whose life history is considered an adaptation to the short and unpredictable growth season in the central Arctic Ocean. This copepod is commonly described as a true Arctic endemic; however, by statistically analyzing compiled observational data, we show that abundances are relatively low and later stages and adults dominate in the central Arctic Ocean basins, indicating expatriation. Combining data analyses with individual‐based modeling and energy requirement estimation, we further demonstrate that while C. hyperboreus can reach higher abundances in areas with greater food availability outside the central Arctic basins, the species’ resilience to environmental fluctuations enables the life cycle to be completed in the central Arctic basins. Specifically, the energy level required to reach the first overwintering stage—a prerequisite for successful local production—is likely met in some—but not all—years. This fine balance between success and failure indicates that C. hyperboreus functions as a peripheral population in the central Arctic basins and its abundance will likely increase in areas with improved growth conditions in response to climate change. By illustrating a key Arctic species’ resilience to extreme and fluctuating environmental conditions, the results of this study have implications for projections of future biogeography and food web dynamics in the Arctic Ocean, a region experiencing rapid warming and sea ice loss.

• Kvile, Kristina Øie; Romagnoni, Giovanni; Dagestad, Knut-Frode; Langangen, Øystein & Kristiansen, Trond (2018). Sensitivity of modelled North Sea cod larvae transport to vertical behaviour, ocean model resolution and interannual variation in ocean dynamic. ICES Journal of Marine Science.  ISSN 1054-3139.  75(7), s 2413- 2424 . doi: 10.1093/icesjms/fsy039 Fulltekst i vitenarkiv. Vis sammendrag

  Transport with ocean currents affects the spatial distribution and survival of fish eggs and larvae and thereby population connectivity. Biophysical models are commonly used to understand these dynamics. Advancements such as implementing vertical swimming behaviour and higher resolution ocean circulation models are known to improve model performance, however, the relative importance of vertical behaviour vs. ocean model resolution is elusive. Here, we use North Sea cod (Gadus morhua) as a case study to assess how vertical movement, ocean model resolution and interannual variation in ocean dynamics influence drift patterns and population connectivity. We couple a fine (1.6 km, 3 h) and coarser (4 km, 24 h) ocean model to an individual-based model for cod eggs and larvae, and compare simulations with and without vertical movement of eggs and larvae. The results are moderately influenced by vertical movement and ocean model resolution but differ substantially between years. While ocean model resolution is consistently more influential than vertical movement, the effect of vertical movement strongly depends on the spatiotemporal scale of the analyses. This study highlights which aspects of biophysical modelling of connectivity that most critically affect the results, allowing better investing computational resources and proposing goal-based guidelines for future studies.

• Langangen, Øystein; Stige, Leif Christian; Kvile, Kristina Øie; Yaragina, Natalia A.; Skjæraasen, Jon Egil; Vikebø, Frode Bendiksen & Ottersen, Geir (2018). Multi-decadal variations in spawning ground use in Northeast Arctic haddock (Melanogrammus aeglefinus). Fisheries Oceanography.  ISSN 1054-6006.  27(5), s 435- 444 . doi: 10.1111/fog.12264
• Stige, Leif Christian; Kvile, Kristina Øie; Bogstad, Bjarte & Langangen, Øystein (2018). Predator-prey interactions cause apparent competition between marine zooplankton groups. Ecology.  ISSN 0012-9658.  99(3), s 632- 641 . doi: 10.1002/ecy.2126 Fulltekst i vitenarkiv.
• Holt, Rebecca Emma; Woods, P.J; Ferreira, A.S.A; Bardarson, H; Bonanomi, Sara; Boonstra, W.J; Butler, W.E; Diekert, Florian Klaus; Fouzai, Nadia; Holma, M; Kokkalis, Alexandros; Kvile, Kristina Øie; Macdonald, J.I; Malanski, Evandro; Nieminen, E; Ottosen, K.M.; Pedersen, M.W; Richter, Andries Peter; Rogers, Lauren; Romagnoni, Giovanni; Snickars, Martin; Törnroos, Anna; Weigel, Benjamin; Whittington, Jason & Yletyinen, Johanna (2017). Avoiding pitfalls in interdisciplinary education. Climate Research (CR).  ISSN 0936-577X.  74(2), s 121- 129 . doi: 10.3354/cr01491
• Kvile, Kristina Øie; Fiksen, Øyvind; Prokopchuk, Irina & Opdal, Anders Frugård (2017). Coupling survey data with drift model results suggests that local spawning is important for Calanus finmarchicus production in the Barents Sea. Journal of Marine Systems.  ISSN 0924-7963.  165, s 69- 76 . doi: 10.1016/j.jmarsys.2016.09.010
• Kvile, Kristina Øie; Langangen, Øystein; Prokopchuk, Irina P.; Stenseth, Nils Christian & Stige, Leif Christian (2016). Disentangling the mechanisms behind climate effects on zooplankton. Proceedings of the National Academy of Sciences of the United States of America.  ISSN 0027-8424.  113(7), s 1841- 1846 . doi: 10.1073/pnas.1525130113
• Kvile, Kristina Øie; Stige, Leif Christian; Prokopchuk, Irina P. & Langangen, Øystein (2016). A statistical regression approach to estimate zooplankton mortality from spatiotemporal survey data. Journal of Plankton Research.  ISSN 0142-7873.  38(3), s 624- 635 . doi: 10.1093/plankt/fbw028
• Pedersen, Martin Wæver; Kokkalis, Alexandros; Bardarson, Hermann; Bonanomi, Sara; Boonstra, Wiebren; Butler, William E.; Diekert, Florian Klaus; Fouzai, Nadia; Holma, Maija Kristiina; Holt, Rebecca; Kvile, Kristina Øie; Nieminen, Emmi Elina; Ottosen, Katharina M.; Richter, Andries Peter; Rogers, Lauren; Romagnoni, Giovanni; Snickars, Martin; Törnroos, Anna; Weigel, Benjamin; Whittington, Jason; Woods, Pamela J.; Yletyinen, Johanna Katariina & Ferreira, Ana Sofia de Araujo (2016). Trends in marine climate change research in the Nordic region since the first IPCC report. Climatic Change.  ISSN 0165-0009.  134(1), s 147- 161 . doi: 10.1007/s10584-015-1536-6
• Boonstra, Wiebren; Ottosen, Katharina M.; Ferreira, Ana Sofia de Araújo; Richter, Andries Peter; Rogers, Lauren; Pedersen, Martin Wæver; Kokkalis, Alexandros; Bárðarson, Hlynur; Bonanomi, Sara; Butler, William; Diekert, Florian Klaus; Fouzai, Nadia; Holma, Maija Kristiina; Holt, Rebecca; Kvile, Kristina Øie; Malanski, Evandro; Macdonald, Jed I.; Nieminen, Emmi Elina; Romagnoni, Giovanni; Snickars, Martin; Weigel, Benjamin; Woods, Pamela J.; Yletyinen, Johanna Katariina & Whittington, Jason (2015). What are the major global threats and impacts in marine environments? Investigating the contours of a shared perception among marine scientists from the bottom-up. Marine Policy.  ISSN 0308-597X.  60, s 197- 201 . doi: 10.1016/j.marpol.2015.06.007
• Kvile, Kristina Øie; Dalpadado, Padmini; Orlova, Emma L.; Stenseth, Nils Christian & Stige, Leif Christian (2014). Temperature effects on Calanus finmarchicus vary in space, time and between developmental stages. Marine Ecology Progress Series.  ISSN 0171-8630.  517, s 85- 104 . doi: 10.3354/meps11024
• Kvile, Kristina Øie; Taranto, Gerald; Pitcher, Tony J. & Morato, Telmo (2014). A global assessment of seamount ecosystems knowledge using an ecosystem evaluation framework. Biological Conservation.  ISSN 0006-3207.  173, s 108- 120 . doi: 10.1016/j.biocon.2013.10.002
• Alaliyat, Saleh; Osen, Ottar & Kvile, Kristina Øie (2013). An agent-based model to simulate pathogen transmission between aquaculture sites in the Romsdalsfjord, In  Proceedings 27th European Conference on Modelling and Simulation ECMS 2013, May 27th - May 30th, 2013, Ålesund, Norway.  ECMS European Council for Modelling and Simulation.  ISBN 978-0-9564944-6-7.  Agent-based simulation.  s 46 - 52
• Morato, Telmo; Kvile, Kristina Øie; Taranto, Gerald; Tempera, Fernando; Narayanaswamy, Bhavani; Hebbeln, Dierk; Menezes, Gui; Wienberg, Claudia; Santos, Rui & Pitcher, Tony J. (2013). Seamount physiography and biology in the north-east Atlantic and Mediterranean Sea. Biogeosciences.  ISSN 1726-4170.  10 . doi: 10.5194/bg-10-3039-2013
• Taranto, Gerald; Kvile, Kristina Øie; Pitcher, Tony J. & Morato, Telmo (2012). An Ecosystem Evaluation Framework for Global Seamount Conservation and Management. PLOS ONE.  ISSN 1932-6203.  7(8) . doi: 10.1371/journal.pone.0042950

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• Bekkby, Trine; Burrows, Michael; Cebrian, Emma; Fredriksen, Stein; Kotta, Jonne; Milanese, Martina; Andersen, Guri Sogn; Boada, Jordi; Borchgrevink, Harald Bonaventura; Brkljacic, Marijana Stenrud; Fagerli, Camilla With; Gundersen, Hege; Kvile, Kristina Øie; Moy, Siri Røang & Rinde, Eli (2021). COASTFRAG - Effekter av fragmentering og tap av habitater på økosystemer i kystsonen og betydningen for b ærekraftig forvaltning i en verden i endring.
• Bekkby, Trine; Michael, Burrows; Cebrian, Emma; Fredriksen, Stein; Kotta, Jonne; Milanese, Martina; Andersen, Guri Sogn; Boada, Jordi; Borchgrevink, Harald Bonaventura; Brkljacic, Marijana Stenrud; Fagerli, Camilla With; Gundersen, Hege; Kvile, Kristina Øie; Moy, Siri Røang & Rinde, Eli (2021). COASTFRAG – Impact of habitat fragmentation and loss on coastal ecosystems and implications for sustainable management under climate change.
• Frigstad, Helene; Gundersen, Hege; Andersen, Guri Sogn; Borgersen, Gunhild; Kvile, Kristina Øie; Krause-Jensen, Dorte; Boström, Christoffer; Bekkby, Trine; d'Auriac, Marc Anglès; Ruus, Anders; Thormar, Jonas; Asdal, K & Hancke, Kasper (2021). Blue Carbon – climate adaptation, CO2 uptake and sequestration of carbon in Nordic blue forests. Results from the Nordic Blue Carbon Project.. TemaNord. 541. Vis sammendrag

  This report presents the main findings of the Nordic Blue Carbon Project (2017–2020) on the areal distribution and carbon budget of blue forests (kelp forests, seagrass meadows and rockweed beds) in the Nordic region. We have identified the main ecosystem effects of climate change and other human pressures on Nordic blue forests, tested the effect of moderating some of these pressures, and give scientific advice on management measures aimed at safeguarding these important coastal ecosystems for the future. Recently, there has been an increased focus on salt marshes as a blue forest habitat, however salt marshes were not covered in the Nordic Blue Carbon Project.

• Forsgren, Elisabet; Trannum, Hilde Cecilie; Gundersen, Hege; Lorentsen, Svein-Håkon; Järnegren, Johanna & Kvile, Kristina Øie (2020). Hav, I: Simon Jakobsson & Bård Pedersen (red.),  Naturindeks for Norge 2020. Tilstand og utvikling for biologisk mangfold.  Norsk institutt for naturforskning (NINA).  ISBN 978-82-426-4658-3.  3.  s 18 - 28
• Forsgren, Elisabet; Trannum, Hilde Cecilie; Gundersen, Hege; Lorentsen, Svein-Håkon; Järnegren, Johanna & Kvile, Kristina Øie (2020). Naturindeks: Hav.
• Forsgren, Elisabet; Trannum, Hilde Cecilie; Gundersen, Hege; Lorentsen, Svein-Håkon; Järnegren, Johanna & Kvile, Kristina Øie (2020). Status og trender for hav i Naturindeksen.
• Gundersen, Hege; Andersen, Guri Sogn & Kvile, Kristina Øie (2020). The Nordic Blue Carbon Project: Distribution mapping of blue Carbon habitats.
• Gundersen, Hege; Forsgren, Elisabet; Lorentsen, Svein-Håkon; Trannum, Hilde Cecilie & Kvile, Kristina Øie (2020). Status og trender for kystvann i Naturindeksen.
• Gundersen, Hege; Kvile, Kristina Øie; Forsgren, Elisabet; Lorentsen, Svein-Håkon & Trannum, Hilde Cecilie (2020). Naturindeks: Kystvann.
• Kvile, Kristina Øie; Forsgren, Elisabet; Lorentsen, Svein-Håkon; Trannum, Hilde Cecilie & Gundersen, Hege (2020). Kystvann, I: Simon Jakobsson & Bård Pedersen (red.),  Naturindeks for Norge 2020. Tilstand og utvikling for biologisk mangfold.  Norsk institutt for naturforskning (NINA).  ISBN 978-82-426-4658-3.  4.  s 29 - 37
• Skottene, Elise; Tarrant, Ann M.; Altin, Dag & Kvile, Kristina Øie (2020). Can copepod diapause be induced in the lab?.
• Stige, Leif Christian & Kvile, Kristina Øie (2017). Climate warming drives large-scale changes in ecosystem function. Proceedings of the National Academy of Sciences of the United States of America.  ISSN 0027-8424.  114(46), s 12100- 12102 . doi: 10.1073/pnas.1717090114 Fulltekst i vitenarkiv.
• Gusdal, Yvonne; Melsom, Arne; Trodahl, Marta; Kvile, Kristina Øie & Langangen, Øystein (2016). Changes in drift pathways of fish egg along the coast of Norway.
• Kvile, Kristina Øie; Dalpadado, Padmini; Fiksen, Øyvind; Langangen, Øystein; Opdal, Anders Frugård; Prokopchuk, Irina P.; Stenseth, Nils Christian & Stige, Leif Christian (2016). Climate responses of Calanus finmarchicus in a high latitude system.
• Kvile, Kristina Øie; Stige, Leif Christian; Prokopchuk, Irina P. & Langangen, Øystein (2016). A statistical regression approach to estimate zooplankton mortality from spatiotemporal survey data.
• Stige, Leif Christian; Kvile, Kristina Øie & Langangen, Øystein (2016). Zooplankton and fish: revealing key processes in predator−prey dynamics in the Barents Sea.
• Stige, Leif Christian; Kvile, Kristina Øie & Langangen, Øystein (2016). Zooplankton and fish: revealing key processes in predator‑prey dynamics in the Barents Sea.
• Kvile, Kristina Øie (2015). Disentangling the mechanisms behind climate effects on zooplankton.
• Kvile, Kristina Øie; Fiksen, Øyvind & Frugård Opdal, Anders (2014). Linking models and data: Can we find the spawning areas of Calanus finmarchicus?.
• Kvile, Kristina Øie; Langangen, Øystein & Stige, Leif Christian (2014). Including drift in analyses of observation data reveals environmental effects on copepod biomass in the Barents Sea.
• Kvile, Kristina Øie (2013). Temperature - zooplankton associations in the Barents Sea vary on temporal, spatial and developmental scales.
• Kvile, Kristina Øie; Stenseth, Nils Christian & Stige, Leif Christian (2013). Temperature - zooplankton associations in the Barents Sea vary on temporal, spatial and developmental scales.
• Kvile, Kristina Øie (2012). Climatic influences on zooplankton dynamics in Lofoten and the Barents Sea.

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