Marta Moyano

• Ofelio, Claudia; Moyano, Marta; Sswat, Michael; Rioual, Fanny; Moullec, Fabien & Aguirre Velarde, Arturo [Show all 7 contributors for this article] (2023). Temperature and prey density drive growth and otolith formation of the world's most valuable fish stock. Scientific Reports. ISSN 2045-2322. 13. doi: 10.1038/s41598-023-43168-w. Full text in Research Archive Show summary

  Peruvian anchovy (Engraulis ringens) represents the largest single-species fishery worldwide. Knowledge on how temperature and prey availability influences growth and age estimation during marine fish early life stages is critical for predicting bottom-up processes impacting stock productivity under changing environmental conditions. We reared Peruvian anchovy larvae at two temperatures (14.5 and 18.5 °C) and prey concentrations [high (HF), and low (LF)] from 6 to 30 days post-hatch (dph) to measure growth rate and examine daily deposition of otolith increments. Peruvian anchovy larvae grew faster at 18.5 °C compared to 14.5 °C. Larvae reared at low prey concentration (18.5-LF) and low temperature (14.5-HF) grew 61 and 35% slower, respectively, than those at high prey and warm temperature (18.5-HF). Age and growth rates of larvae were well depicted in the otolith microstructure of well-fed larvae at 18.5 °C. However, larvae reared at 18.5-LF or 14.5-HF, had only 55 and 49% of the expected number of daily otolith increments. Our results suggest caution when attempting to explore how ocean processes regulate small pelagic stocks, the productivity of which are largely driven by changes in the survival and growth of young larvae.

• Akimova, Anna; Peck, Myron A.; Börner, Gregor; van Damme, Cindy & Moyano, Marta (2023). Combining modeling with novel field observations yields new insights into wintertime food limitation of larval fish. Limnology and Oceanography. ISSN 0024-3590. 68(8), p. 1865–1879. doi: 10.1002/lno.12391. Full text in Research Archive Show summary

  Recruitment success of marine fishes is generally considered to be highly dependent on larval growth and survival. In temperate ecosystems, fish larvae are sensitive to food limitation during the low productivity seasons, particularly if water temperatures and concomitant larval metabolic costs increase due to climate change. We combined 7 years of in situ sampling of larval fish, novel observations on zooplankton via automated image analyses, and larval physiological modeling to explore feeding conditions of Atlantic herring larvae (Clupea harengus) in the North Sea. The observed plankton size-structure was close to the theoretical optimum for larval foraging, but not the biomass. Our results for autumn larvae supported Hjort's critical period hypothesis: small first-feeding larvae were predicted to have a high probability of starvation, whereas larvae > 13 mm were able to reach their maximal growth capacity. In winter, the majority of herring larvae of all tested sizes (5–27 cm) experienced food-limitation with over 35% probability of starvation. Sensitivity analysis suggested that young herring larvae improve their growth performance and probability of survival if feed not only on copepods and their life-stages but include other microplankters in their diet. Given projected warming of the North Sea, our model predicts that herring larvae would require 28% (35%) more prey biomass in autumn (winter) to sustain their growth and survival in the future. This finding together with the ongoing low recruitment of North Sea herring underscore the importance of future micro- and mesoplankton monitoring within a scope of wintertime larval fish surveys.

• Moyano, Marta; Illing, Björn; Akimova, Anna; Alter, Katharina; Bartolino, Valerio & Börner, Gregor [Show all 17 contributors for this article] (2022). Caught in the middle: bottom‑up and top‑down processes impacting recruitment in a small pelagic fish. Reviews in Fish Biology and Fisheries. ISSN 0960-3166. doi: 10.1007/s11160-022-09739-2. Full text in Research Archive
• Howald, Sarah; Moyano, Marta; Crespel, Amélie; Kuchenmüller, Luis L.; Cominassi, Louise & Claireaux, Guy [Show all 8 contributors for this article] (2022). Effects of ocean acidification over successive generations decrease resilience of larval European sea bass to ocean acidification and warming but juveniles could benefit from higher temperatures in the NE Atlantic. Journal of Experimental Biology. ISSN 0022-0949. 225(9). doi: 10.1242/jeb.243802. Show summary

  European sea bass (Dicentrarchus labrax) is a large, economically important fish species with a long generation time whose long-term resilience to ocean acidification (OA) and warming (OW) is not clear. We incubated sea bass from Brittany (France) for two generations (>5 years in total) under ambient and predicted OA conditions (PCO2: 650 and 1700 µatm) crossed with ambient and predicted OW conditions in F1 (temperature: 15–18°C and 20–23°C) to investigate the effects of climate change on larval and juvenile growth and metabolic rate. We found that in F1, OA as a single stressor at ambient temperature did not affect larval or juvenile growth and OW increased developmental time and growth rate, but OAW decreased larval size at metamorphosis. Larval routine and juvenile standard metabolic rate were significantly lower in cold compared with warm conditioned fish and also lower in F0 compared with F1 fish. We did not find any effect of OA as a single stressor on metabolic rate. Juvenile PO2,crit was not affected by OA or OAW in both generations. We discuss the potential underlying mechanisms resulting in the resilience of F0 and F1 larvae and juveniles to OA and in the beneficial effects of OW on F1 larval growth and metabolic rate, but contrastingly in the vulnerability of F1, but not F0 larvae to OAW. With regard to the ecological perspective, we conclude that recruitment of larvae and early juveniles to nursery areas might decrease under OAW conditions but individuals reaching juvenile phase might benefit from increased performance at higher temperatures.

• Bils, Franziska; Aberle-Malzahn, Nicole; Van Damme, Cindy J.G.; Peck, Myron A. & Moyano, Marta (2022). Role of protozooplankton in the diet of North Sea autumn spawning herring (Clupea harengus) larvae. Marine Biology. ISSN 0025-3162. 169. doi: 10.1007/s00227-022-04076-1. Full text in Research Archive Show summary

  The role of small prey (<200 µm) in larval marine fsh nutrition is largely understudied. Here, we explore the contribution of protozooplankton (PZP 20–200 µm) to larval fsh diets, compared to metazoan microzooplankton (MZP 55–200 µm). More specifcally, we tested whether the contribution of PZP increased during the low productivity season and decreased as larvae grow. We used North Sea autumn spawning herring (Clupea harengus) as a case study, as it is a key species with high commercial and ecological importance. In autumn and winter, the potential PZP and MZP prey was dominated by cells<50 µm (mainly Gymnodiniales, Pronoctiluca pelagica, Tripos spp. and Strombidium spp.), while copepod nauplii and copepodites where more abundant in autumn than in winter. Based on their trophic enrichment (∆15 N), larvae preferentially grazed on small MZP<50 µm rather than PZP both in autumn and winter. Larvae of diferent body size (range 8–14 mm standard length) fed at the same trophic level but on diferent prey (similar δ15N but diferent δ13C). Growth rates (based on RNA/ DNA estimates) were similar in autumn and winter, suggesting that growth was not afected by station-specifc diferences in the composition of the prey feld. Our results not only underscore the important role of MZP on larval herring diets both in autumn and wintertime, but also emphasize the limitations of bulk stable isotope analysis. Given the current low recruitment in North Sea herring, these results provide signifcant information for future monitoring approaches relevant to stock assessment of this species.

• Conradt, Jan; Börner, Gregor; López-Urrutia, Ángel; Möllmann, Christian & Moyano, Marta (2022). Automated Plankton Classification With a Dynamic Optimization and Adaptation Cycle. Frontiers in Marine Science. ISSN 2296-7745. 9. doi: 10.3389/fmars.2022.868420. Full text in Research Archive
• Rasmussen, Jeppe Have; Moyano, Marta; Fuiman, Lee A. & Oomen, Rebekah Alice (2022). FishSizer: Software solution for efficiently measuring larval fish size. Ecology and Evolution. ISSN 2045-7758. 12(3), p. 1–10. doi: 10.1002/ece3.8672. Full text in Research Archive Show summary

  Length and depth of fish larvae are part of the fundamental measurements in many marine ecology studies involving early fish life history. Until now, obtaining these measurements has required intensive manual labor and the risk of inter- and intra-observer variability. We developed an open-source software solution to semi-automate the measurement process and thereby reduce both time consumption and technical variability. Using contrast-based edge detection, the software segments images of a fish larva into “larva” and “background.” Length and depth are extracted from the “larva” segmentation while taking curvature of the larva into consideration. The graphical user interface optimizes workflow and ease of usage, thereby reducing time consumption for both training and analysis. The software allows for visual verification of all measurements. A comparison of measurement methods on a set of larva images showed that this software reduces measurement time by 66%–78% relative to commonly used software. Using this software instead of the commonly used manual approach has the potential to save researchers from many hours of monotonous work. No adjustment was necessary for 89% of the images regarding length (70% for depth). Hence, the only workload on most images was the visual inspection. As the visual inspection and manual dimension extraction works in the same way as currently used software, we expect no loss in accuracy.

• Goodwin, Morten; Halvorsen, Kim Aleksander Tallaksen; Jiao, Lei; Knausgård, Kristian Muri; Martin, Angela Helen & Moyano, Marta [Show all 10 contributors for this article] (2022). Unlocking the potential of deep learning for marine ecology: overview, applications, and outlook. ICES Journal of Marine Science. ISSN 1054-3139. 79(2), p. 319–336. doi: 10.1093/icesjms/fsab255. Full text in Research Archive Show summary

  The deep learning (DL) revolution is touching all scientific disciplines and corners of our lives as a means of harnessing the power of big data. Marine ecology is no exception. New methods provide analysis of data from sensors, cameras, and acoustic recorders, even in real time, in ways that are reproducible and rapid. Off-the-shelf algorithms find, count, and classify species from digital images or video and detect cryptic patterns in noisy data. These endeavours require collaboration across ecological and data science disciplines, which can be challenging to initiate. To promote the use of DL towards ecosystem-based management of the sea, this paper aims to bridge the gap between marine ecologists and computer scientists. We provide insight into popular DL approaches for ecological data analysis, focusing on supervised learning techniques with deep neural networks, and illustrate challenges and opportunities through established and emerging applications of DL to marine ecology. We present case studies on plankton, fish, marine mammals, pollution, and nutrient cycling that involve object detection, classification, tracking, and segmentation of visualized data. We conclude with a broad outlook of the field’s opportunities and challenges, including potential technological advances and issues with managing complex data sets.

• Moyano, Marta; Illing, Björn; Polte, Patrick; Kotterba, Paul; Zablotski, Yury & Gröhsler, Tomas [Show all 9 contributors for this article] (2020). Linking individual physiological indicators to the productivity of fish populations: A case study of Atlantic herring. Ecological Indicators. ISSN 1470-160X. doi: 10.1016/j.ecolind.2020.106146.
• Cominassi, Louise; Moyano, Marta; Claireaux, Guy; Howald, Sarah; Mark, Felix Christopher & Zambonino-Infante, J [Show all 7 contributors for this article] (2020). Food availability modulates the combined effects of ocean acidification and warming on fish growth. Scientific Reports. ISSN 2045-2322. doi: 10.1038/s41598-020-58846-2.
• Peck, Myron A.; Alheit, Jürgen; Bertrand, Arnaud; Catalán, Ignacio A.; Garrido, Susana & Moyano, Marta [Show all 9 contributors for this article] (2020). Small pelagic fish in the new millennium: a bottom-up view of global research effort . Progress in Oceanography. ISSN 0079-6611. 191. doi: 10.1016/j.pocean.2020.102494. Full text in Research Archive
• Blanco, Edurne; Reglero, Patricia; Ortega, Aurelio; Folkvord, Arild; de la Gándara, Fernando & Hernández de Rojas, Alma [Show all 7 contributors for this article] (2020). First estimates of metabolic rate in Atlantic bluefin tuna larvae. Journal of Fish Biology. ISSN 0022-1112. 97(5), p. 1296–1305. doi: 10.1111/jfb.14473. Full text in Research Archive
• Bils, Franziska; Moyano, Marta; Aberle-Malzahn, Nicole; van Damme, Cindy J.G.; Nash, Richard David Marriot & Kloppmann, Matthias [Show all 8 contributors for this article] (2019). Broad-scale distribution of the winter protozooplankton community in the North Sea. Journal of Sea Research. ISSN 1385-1101. doi: 10.1016/j.seares.2018.11.006.
• Cominassi, Louise; Moyano, Marta; Claireaux, Guy; Howald, Sarah; Mark, Felix Christopher & Zambonino-Infante, J [Show all 8 contributors for this article] (2018). Combined effects of ocean acidification and temperature on larval and juvenile growth, development and swimming performance of European sea bass (Dicentrarchus labrax). PLOS ONE. ISSN 1932-6203. doi: 10.1371/journal.pone.0221283.
• Moyano, Marta; Illing, Björn; Christiansen, Lars & Peck, Myron A. (2018). Linking rates of metabolism and growth in marine fish larvae. Marine Biology. ISSN 0025-3162. doi: 10.1007/s00227-017-3252-4.
• Illing, Björn; Moyano, Marta; Berg, Julia; Hufnagl, Marc & Peck, Myron A. (2018). Behavioral and physiological responses to prey match-mismatch in larval herring. Estuarine, Coastal and Shelf Science. ISSN 0272-7714. doi: 10.1016/j.ecss.2016.01.003.
• Moyano, Marta; Candebat, Caroline Lourdes; Ruhbaum, Yannick; Alvarez-Fernandez, Santiago; Claireaux, Guy & Zambonino-Infante, J [Show all 7 contributors for this article] (2017). Effects of warming rate, acclimation temperature and ontogeny on the critical thermal maximum of temperate marine fish larvae. PLOS ONE. ISSN 1932-6203. doi: 10.1371/journal.pone.0179928.
• Bils, Franziska; Moyano, Marta; Aberle-Malzahn, Nicole; Hufnagl, Marc; Alvarez-Fernandez, Santiago & Peck, Myron A. (2017). Exploring the microzooplankton–ichthyoplankton link: a combined field and modeling study of Atlantic herring (Clupea harengus) in the Irish Sea. Journal of Plankton Research. ISSN 0142-7873. doi: 10.1093/plankt/fbw074.
• Rahlff, Janina; Peters, Janna; Moyano, Marta; Pless, Ole; Claussen, Carsten & Peck, Myron A. (2017). Short-term molecular and physiological responses to heat stress in neritic copepods Acartia tonsa and Eurytemora affinis. Comparative Biochemistry and Physiology - Part A: Comparative Physiology. ISSN 0300-9629. doi: 10.1016/j.cbpa.2016.11.001.
• Moyano, Marta; Illing, Björn; Peschutter, Philip; Hubert, Klaus B. & Peck, Myron A. (2016). Thermal impacts on the growth, development and ontogeny of critical swimming speed in Atlantic herring larvae. Comparative Biochemistry and Physiology - Part A: Comparative Physiology. ISSN 0300-9629. doi: 10.1016/j.cbpa.2016.02.020.
• Peck, Myron A. & Moyano, Marta (2016). Measuring respiration rates in marine fish larvae: challenges and advances. Journal of Fish Biology. ISSN 0022-1112. doi: 10.1111/jfb.12810.
• Illing, Björn; Moyano, Marta; Hufnagl, Marc & Peck, Myron A. (2016). Projected habitat loss for Atlantic herring in the Baltic Sea. Marine Environmental Research. ISSN 0141-1136. doi: 10.1016/j.marenvres.2015.12.007.
• Illing, Björn; Moyano, Marta; Niemax, Jan & Peck, Myron A. (2015). Direct Effects of Microalgae and Protists on Herring (Clupea harengus) Yolk Sac Larvae. PLOS ONE. ISSN 1932-6203. doi: 10.1371/journal.pone.0129344.
• Silva, Luis; Moyano, Marta; Illing, Björn; Faria, Ana M.; Garrido, Susana & Peck, Myron A. (2015). Ontogeny of swimming capacity in plaice (Pleuronectes platessa) larvae. Marine Biology. ISSN 0025-3162. doi: 10.1007/s00227-015-2621-0.
• Peck, Myron A.; Baumann, Hannes; Clemmesen, Catriona; Hermann, Jens-Peter; Moyano, Marta & Temming, Axel (2015). Calibrating and comparing somatic-, nucleic acid-, and otolith-based indicators of growth and condition in young juvenile European sprat (Sprattus sprattus). Journal of Experimental Marine Biology and Ecology. ISSN 0022-0981. doi: 10.1016/j.jembe.2015.06.011.
• Moyano, Marta; Garrido, Susana; Teodósio, Alexandra & Peck, Myron A. (2014). Standard metabolism and growth dynamics of laboratory-reared larvae of Sardina pilchardus. Journal of Fish Biology. ISSN 0022-1112. doi: 10.1111/jfb.12337.
• Moyano, Marta; Rodriguez, J.M.; Benítez-Barrios, Verónica María & Hernández-León, Santiago (2014). Larval fish distribution and retention in the Canary Current system during the weak upwelling season. Fisheries Oceanography. ISSN 1054-6006. doi: 10.1111/fog.12055.
• Alvarez, Eva; Moyano, Marta; López-Urrutia, Ángel; Nogueira, Enrique & Scharek, Renate (2014). Routine determination of plankton community composition and size structure: a comparison between FlowCAM and light microscopy. Journal of Plankton Research. ISSN 0142-7873. doi: 10.1093/plankt/fbt069.
• Moyano, Marta & Hernández-León, Santiago (2011). Intra- and interannual variability in the larval fish assemblage off Gran Canaria (Canary Islands) over 2005–2007. Marine Biology. ISSN 0025-3162. doi: 10.1007/s00227-010-1556-8.
• Brochier, Timothée; Mason, Evan; Moyano, Marta; Berraho, Amina; Colas, Francois & Sangra, Pablo [Show all 9 contributors for this article] (2011). Ichthyoplankton transport from the African coast to the Canary Islands. Journal of Marine Systems. ISSN 0924-7963. doi: 10.1016/j.jmarsys.2011.02.025.
• Hernández-León, Santiago; Franchy, Gara; Moyano, Marta; Menéndez, Inmaculada; Schmoker, Claire & Putzeys, Sébastien (2010). Carbon sequestration and zooplankton lunar cycles: Could we be missing a major component of the biological pump? Limnology and Oceanography. ISSN 0024-3590. doi: 10.4319/lo.2010.55.6.2503.
• Moyano, Marta; Rodríguez, J.M. & Hernández-León, Santiago (2009). Larval fish abundance and distribution during the late winter bloom in the Canary Island waters. Fisheries Oceanography. ISSN 1054-6006. doi: 10.1111/j.1365-2419.2008.00496.x.
• Moyano, Marta & Hernández-León, Santiago (2009). Temporal and along-shelf distribution of the larval fish assemblage at Gran Canaria, Canary Islands. Scientia Marina. ISSN 0214-8358. doi: 10.3989/scimar.2009.73sl085.
• Bécognée, Pierrick; Moyano, Marta; Almeida, Carlos; Rodríguez, J.M.; Fraile-Nuez, Eugenio & Hernández-Guerra, Alonso [Show all 7 contributors for this article] (2009). Mesoscale distribution of clupeoid larvae in an upwelling filament trapped by a quasi-permanent cyclonic eddy off Northwest Africa. Deep Sea Research Part I: Oceanographic Research Papers. ISSN 0967-0637. doi: 10.1016/j.dsr.2008.10.008.
• Rodríguez, J.M.; Moyano, Marta & Hernández-León, Santiago (2009). The ichthyoplankton assemblage of the Canaries–African Coastal Transition Zone: A review. Progress in Oceanography. ISSN 0079-6611. doi: 10.1016/j.pocean.2009.07.009.

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• Moyano, Marta (2023). Sensitivity of early life stages of fishes to anthropogenic stressors and relevance for population dynamics.
• Moyano, Marta; Maat, Douwe; van Bleijwijk, Judith; Börner, Gregor; Kurbjuweit, Stefanie & Auch, Dominik [Show all 8 contributors for this article] (2023). Shedding light into the larval diets of North Sea herring and Peruvian anchovy using metabarcoding.
• Moyano, Marta; Illing, Björn; Akimova, Anna; Alter, Katharina; Bartolino, Valerio & Börner, Gregor [Show all 17 contributors for this article] (2023). Correction: Caught in the middle: bottom up and top down processes impacting recruitment in a small pelagic fish (Reviews in Fish Biology and Fisheries, (2022), 10.1007/s11160-022-09739-2). Reviews in Fish Biology and Fisheries. ISSN 0960-3166. 33(1), p. 85–87. doi: 10.1007/s11160-022-09754-3.
• Börner, Gregor; Otto, Saskia A; Aberle-Malzahn, Nicole; Harmer, Rachel; Bils, Franziska & van Damme, Cindy JG [Show all 12 contributors for this article] (2022). Spatio-temporal distribution of the North Sea winter protozooplankton community and size-structure between 2013 and 2021.
• Börner, Gregor; Huertas, Maria C.; Folkvord, Arild; Brüggemann, Daniel; Goldenberg, Silvan & Sswat, Michael [Show all 8 contributors for this article] (2022). Response of Atlantic herring larvae to ocean alkalinity enhancement.
• Brüggemann, Daniel; Börner, Gregor; Folkvord, Arild; Moyano, Marta; Sswat, Michael & Goldenberg, Silvan [Show all 9 contributors for this article] (2022). Performance of herring larvae under ocean alkalinity enhancement, an ocean-based carbon dioxide removal technique, in a mesocosm approach.
• Moyano, Marta; Illing, Björn; Alter, Katharina; Bartolino, Valerio; Börner, Gregor & Clemmesen, Catriona [Show all 16 contributors for this article] (2022). Caught in the middle: Bottom-up and top-down processes impacting recruitment in Western-Baltic herring .
• Akimova, Anna; Börner, Gregor; van Damme, Cindy JG; Peck, Myron A. & Moyano, Marta (2022). A new insight into feeding conditions of North Sea herring larvae: combining field observations and physiological modelling.
• Ofelio, Claudia; Schukat, Anna; Auch, Dominik; Kurbjuweit, Stefanie; Moyano, Marta & Rioual, Fanny [Show all 9 contributors for this article] (2022). Understanding the vulnerability of Peruvian anchovy larvae to environmental variables.
• Garrido, Susana & Moyano, Marta (2022). The big unknowns on the feeding dynamics during the early life stages of small pelagic fishes.
• Sswat, Michael; Goldenberg, Silvan; Dorssers, Scott; Ofelio, Claudia; Aguirre Velarde, Arturo & Rioual, Fanny [Show all 10 contributors for this article] (2022). Growth performance of larval Anchoveta Engraulis ringens in a natural plankton community: First insights from a mesocosm study off Peru on the effect of different light regimes and upwelling intensities.
• Egge, Elianne; Deininger, Anne; Bekkby, Trine; Eikrem, Wenche; Mengeot, Caroline & Frigstad, Helene [Show all 12 contributors for this article] (2023). ØKOKYST – DP Norskehavet Sør, Årsrapport 2022. Norsk institutt for vannforskning. ISSN 978-82-577-7634-3. Full text in Research Archive Show summary

  Overvåkingsprogrammet "Økosystemovervåking i Kystvann – Økokyst" har til hensikt å overvåke miljøtilstanden langs norskekysten i henhold til vannforskriften. Økokyst delprogram Norskehavet Sør dekker kyststrekningen fra Ulsteinvik i sør til Helgeland i nord. Av de ni vannforekomstene som kunne klassifiseres i 2022 fikk én samlet «svært god» tilstand, sju «god» tilstand, mens én fikk «moderat» tilstand, der oksygenverdier i bunnvann trakk ned. De to ålegress-stasjonene var lokalisert i samme vannforekomst og fikk begge “god” tilstand. I tillegg til parameterne brukt til klassifisering ble klimaparameterne dyreplankton, lys og organisk materiale overvåket ved én stasjon i vannforekomst Steinsfjorden nær Ulsteinvik.

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