Article
Oceanography
S. A. Rodkina, S. I. Kiyashko, V. V. Mordukhovich
Summary: Holothurians play a crucial role in the deep-sea ecosystem, forming significant aggregations with high abundance and biomass. The distribution pattern of these deep-sea holothurians is influenced by their food strategies and the quantity and quality of available food. Using trophic markers, this study investigated the trophic preferences of four common deep-sea holothurian species in the Bering Sea. The results showed that all species utilized organic matter of the same origin, but their fatty acid composition and isotopic values varied, indicating differences in food sources and preferences among the species.
DEEP-SEA RESEARCH PART II-TOPICAL STUDIES IN OCEANOGRAPHY
(2023)
Article
Environmental Sciences
Karl Cutajar, Lynne Falconer, Alexia Massa-Gallucci, Rachel E. Cox, Lena Schenke, Tamas Bardocz, Cristina Andolina, Geraldina Signa, Salvatrice Vizzini, Matthew Sprague, Trevor C. Telfer
Summary: The study confirmed the trophic connection between farmed fish in a commercial nearshore fish farm and sea cucumbers in the Mediterranean Sea, and revealed the potential of sea cucumbers to utilize aquaculture organic waste through stable isotope and fatty acid analysis. Additionally, the composition of sea cucumber tissues differed between the IMTA and reference locations in the vicinity of fish cages.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2022)
Article
Agriculture, Multidisciplinary
Kehong Liang, Hong Zhu, Shanshan Zhao, Haijin Liu, Yan Zhao
Summary: By characterizing the chemical profiles of flaxseed samples using lipids/fatty acids, stable isotopes, and antioxidant capacity, combined with principal component analysis and orthogonal partial least squares discriminant analysis, a satisfactory discrimination rate of 98.6% was achieved in tracing the geographic origin of flaxseed from five regions in northern China.
JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE
(2022)
Article
Fisheries
Odd Aksel Bergstad, Hege Overbo Hansen, Alf Harbitz
Summary: Records of roughhead grenadier in a time series of bottom trawl surveys along the Norwegian Sea shelf edge off Norway and Spitsbergen confirmed wide distribution at depths of 500-800 m, with abundance decreasing towards northern areas along the Spitsbergen shelf. The distribution extends southwards beyond the sampling area, and abundance and biomass showed variability without a clear temporal trend between 1997 and 2020. Size distributions were typically bimodal, with some years showing higher abundance of small fish suggesting temporal variation in recruitment.
FISHERIES RESEARCH
(2021)
Article
Environmental Sciences
Miriam Gross-Schmolders, Kristy Klein, Willem-Jan Emsens, Rudy van Diggelen, Camiel J. S. Aggenbach, Yvonne Liczner, Jan Frouz, Jens Leifeld, Christine Alewell
Summary: The degradation of peatlands is closely related to changes in hydrology and microbial metabolism. This study investigated the correlation between stable isotope values, microbial abundance, and hydrological regimes. The findings suggest that biomarkers such as stable isotope values and microbial-derived fatty acids can indicate different hydrological conditions in peatlands.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Ecology
Margaux Mathieu-Resuge, Matthias Pilecky, Cornelia W. Twining, Dominik Martin-Creuzburg, Tarn Preet Parmar, Simon Vitecek, Martin J. Kainz
Summary: The study revealed that spiders at the lake riparian area obtained lipids and polyunsaturated fatty acids (PUFA) from emergent aquatic and terrestrial insects, and the transfer of these nutrients varied depending on the distance of the spiders from the shoreline. Spiders in different habitats showed differences in the dietary sources and metabolic pathways used to fulfill their EPA demand, indicating the flexibility of spiders in adapting to their habitat and dietary availability.
Article
Food Science & Technology
Miriam Hernandez-Jimenez, Maria Inmaculada Gonzalez-Martin, Ivan Martinez-Martin, Isabel Revilla, Ana Maria Vivar-Quintana
Summary: This study explores the application of NIR for predicting stable isotopes and fatty acid composition in Iberian pigs, showing significant correlations and differentiation potential between samples from different feeding regimes.
Article
Geochemistry & Geophysics
Danielle S. Glynn, Kelton W. McMahon, Owen A. Sherwood, Thomas P. Guilderson, Matthew D. McCarthy
Summary: Paleoproxy records can be reconstructed from deep-sea proteinaceous coral skeletons to understand past ocean conditions. The stability and integrity of protein matrix and stable isotope proxies in subfossil specimens have not been examined. This study compares amino acid composition and stable isotope values in live-collected and subfossil deep-sea coral specimens and finds that compound-specific isotope analysis of amino acids can reconstruct paleo-oceanographic information beyond a clear diagenetic horizon.
GEOCHIMICA ET COSMOCHIMICA ACTA
(2022)
Article
Zoology
Chi-Ngai Tang
Summary: A new species of codling, Physiculus megastomus sp. nov., has been described based on specimens collected from northern and eastern Taiwan. This new species is classified in the genus Physiculus due to specific morphological characteristics and DNA barcoding, and is distinguished from congeners by its large mouth size and other specific features.
Article
Geochemistry & Geophysics
Raphael J. Baumgartner, Siyu Hu, Sven Petersen, Sheng-Ao Liu, Dandan Li, Marcus Kunzmann
Summary: This study investigates the zinc and copper stable isotope characteristics in metalliferous seafloor sediments from the Atlantis II Deep in the Red Sea. The results show enrichment of light stable isotopes in the sediments compared to the hydrothermal inputs, indicating sulfide deposition as the main driver of isotope fractionation. The study suggests that zinc and copper stable isotopes can provide valuable information about metal sourcing and accumulation processes in similar paleoenvironments.
Article
Environmental Sciences
Yuxin Liu, Yu Liu, Dian Jiao, Chao Lu, Yadi Lou, Na Li, Guoguang Wang, Haixia Wang
Summary: This study investigated the interaction between the macroalgae Ulva pertusa and marine microalgae Heterosigma akashiwo through co-cultivation, revealing growth inhibition and changes in fatty acid content and carbon stable isotope ratio. It found that the C18:3n-3 released by U. pertusa can inhibit the growth of H. akashiwo, providing a theoretical basis for marine algae symbiosis and a new method for exploring fatty acid metabolism in algae through compound-specific stable carbon isotopes.
ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
(2021)
Article
Ecology
Ulrike Hanz, Philip Riekenberg, Anna de Kluijver, Marcel van der Meer, Jack J. Middelburg, Jasper M. de Goeij, Martijn C. Bart, Erik Wurz, Ana Colaco, Gerard C. A. Duineveld, Gert-Jan Reichart, Hans-Tore Rapp, Furu Mienis
Summary: This study reveals how deep-sea sponge grounds survive in a food-limited environment through stable isotope analysis. Sponge with high microbial abundance utilize dissolved resources and efficient recycling pathways to sustain themselves and other organisms. Additionally, sponges provide organic material to support the otherwise food-limited associated fauna, contributing to the thriving deep-sea ecosystems.
FUNCTIONAL ECOLOGY
(2022)
Article
Fisheries
Bastien Sadoul, Jean-Philippe Caprioli, Chloe Barrier-Loiseau, Nicolas Cimiterra, Thierry Laugier, Franck Lagarde, Killian Chary, Myriam D. Callier, Marine-Oceane Guillermard, Emmanuelle Roque d'Orbcastel
Summary: The use of detritivores, such as sea cucumbers, under marine fish farms shows promise in mitigating the benthic impacts of these farms. This study focused on the potential for co-culture of Holothuria tubulosa, a Mediterranean sea cucumber species, near marine fish cages. The study found that while adult H. tubulosa can survive below the cages, they do not benefit nutritionally from fish waste over short periods. Furthermore, the fatty acid and protein composition of sea cucumbers were affected by their proximity to the cages.
Article
Environmental Sciences
Louise Merquiol, Giovanna Romano, Adele Cutignano, Isabella 'Ambra
Summary: Fatty acids are used as biomarkers to assess prey contribution to consumer diet and define food web structure. Traditional lipid extraction methods involve the use of environmental pollutants. This study found that methyl tert-butyl ether (MTBE) is a reliable alternative for lipid extraction in marine ecological studies.
MARINE ENVIRONMENTAL RESEARCH
(2023)
Article
Geochemistry & Geophysics
Florian Kurzweil, Olaf Dellwig, Martin Wille, Ronny Schoenberg, Helge W. Arz, Carsten Muenker
Summary: Manganese oxides preferentially adsorb light tungsten isotopes in marine environments, leading to heavier W isotope compositions in seawater. The stable W isotope data in sediments are related to the oxygenation level of seawater, indicating its potential as a tracer for early Earth redox reconstructions.
EARTH AND PLANETARY SCIENCE LETTERS
(2022)
Article
Oceanography
Laura Gonzalez Garcia, Graham J. Pierce, Emmanuelle Autret, Jesus M. Torres-Palenzuela
Summary: This study examines the habitat preferences of fin whales and sei whales around the Azores, and finds that both species are influenced by environmental factors related to primary production and show a preference for oceanographically dynamic areas. Fin whales prefer colder waters, while sei whales prefer areas with stronger sea surface temperature gradients.
DEEP-SEA RESEARCH PART I-OCEANOGRAPHIC RESEARCH PAPERS
(2022)
Article
Oceanography
Philip R. Hollyman, Marta Soeffker, Jim Roberts, Oliver T. Hogg, Vladimir V. Laptikhovsky, Jose P. Queiros, Chris Darby, Mark Belchier, Martin A. Collins
Summary: The South Sandwich Islands is a biologically rich area with clear differences in fish and invertebrate communities across its latitudinal range, driven by environmental factors such as seawater temperature. Climate change may alter these communities with poleward shifts in species ranges.
DEEP-SEA RESEARCH PART II-TOPICAL STUDIES IN OCEANOGRAPHY
(2022)
Editorial Material
Oceanography
M. A. Collins, T. Hart, O. T. Hogg, P. R. Hollyman, C. M. Liszka, H. A. Stewart, P. N. Trathan
Summary: The South Sandwich Islands are an isolated, oceanic, volcanically formed archipelago in the Atlantic sector of the Southern Ocean. Despite being remote, the region has a history of exploitation and currently supports small, sustainably managed fisheries for two species of toothfish. The research papers in this special issue cover a wide range of topics, contributing to our understanding of oceanography, ecology, and habitat use by vertebrate predators, while also highlighting the lack of knowledge about the region and pointing towards future research priorities.
DEEP-SEA RESEARCH PART II-TOPICAL STUDIES IN OCEANOGRAPHY
(2022)
Article
Oceanography
M. Belchier, M. A. Collins, S. Gregory, P. Hollyman, M. Soeffker
Summary: The exploitation of marine resources in the South Sandwich Islands started with fur seal hunting in the 19th Century, followed by pelagic whaling and trawl fisheries for demersal finfish and krill. However, fishing activity in the region is now limited to a licensed demersal longline fishery for toothfish. The South Sandwich Islands is now protected by a Marine Protected Area and additional management measures.
DEEP-SEA RESEARCH PART II-TOPICAL STUDIES IN OCEANOGRAPHY
(2022)
Article
Oceanography
Marta Soeffker, Philip R. Hollyman, Martin A. Collins, Oliver T. Hogg, Ainsley Riley, Vladimir Laptikhovsky, Timothy Earl, Jim Roberts, Eleanor MacLeod, Mark Belchier, Chris Darby
Summary: This paper focuses on two toothfish species, the Patagonian toothfish and the Antarctic toothfish, in the South Sandwich Islands (SSI) region. The study reveals that the Patagonian toothfish around the SSI is connected to the adjacent South Georgia population but has unique characteristics. On the other hand, the Antarctic toothfish at the SSI represents the northern extent of a larger stock. The relative importance of the SSI in the life cycle of both species, especially in the context of climate change, is also explored.
DEEP-SEA RESEARCH PART II-TOPICAL STUDIES IN OCEANOGRAPHY
(2022)
Article
Fisheries
Edel Sheerin, Leigh Barnwall, Esther Abad, Angela Larivain, Daniel Oesterwind, Michael Petroni, Catalina Perales-Raya, Jean-Paul Robin, Ignacio Sobrino, Julio Valeiras, Denise O'Meara, Graham J. Pierce, A. Louise Allcock, Anne Marie Power
Summary: Knowledge of stock structure is crucial for assessing commercially-fished cephalopods effectively. This study analyzed samples from various locations using mitochondrial and microsatellite markers, revealing that Loligo forbesii squid form distinguishable ecological groups over short timescales, with a semi-isolated breeding group at Rockall.
ICES JOURNAL OF MARINE SCIENCE
(2022)
Article
Fisheries
Vladimir Laptikhovsky, A. Louise Allcock, Leigh Barnwall, Christopher Barrett, Gavan Cooke, Christian Drerup, Christopher Firmin, Sophie Lozach, Eleanor MacLeod, Daniel Oesterwind, Michael Petroni, Jean-Paul Robin, Edel Sheerin, Anne-Marie Power, Graham J. Pierce
Summary: Through the analysis of data collected over the past 30 years by scientists from the UK, Germany, France, and Ireland, as well as observations from multinational Citizen Science, it was found that the spawning grounds of L. forbesii form an external semi-circle around the spawning grounds of L. vulgaris, and L. forbesii utilizes the North Sea more extensively than L. vulgaris. Seasonally, the position of the spawning grounds is influenced by local temperature conditions, with spawning occurring from November to July.
ICES JOURNAL OF MARINE SCIENCE
(2022)
Article
Marine & Freshwater Biology
Camilo Saavedra, Manuel Garcia-Polo, Joan Gimenez, Jose Luis Mons, Juan Jose Castillo, Carolina Fernandez-Maldonado, Renaud de Stephanis, Graham John Pierce, Maria Begona Santos
Summary: This study analyzed the food remains found in the stomachs of striped dolphins stranded in southern Spain. The results showed that their main prey were mesopelagic and neritic fish, as well as oceanic squids. The diet composition varied based on geographical location, season, and gender, indicating a close relationship between the dolphins' diet and environmental factors.
MARINE MAMMAL SCIENCE
(2022)
Article
Multidisciplinary Sciences
Paolo Cipriani, Marialetizia Palomba, Lucilla Giulietti, Federica Marcer, Sandro Mazzariol, Mario Santoro, Renato Aco Alburqueque, Pablo Covelo, Alfredo Lopez, M. Begona Santos, Graham J. Pierce, Andrew Brownlow, Nicholas J. Davison, Barry McGovern, Alexandros Frantzis, Paraskevi Alexiadou, Danjal Petur Hojgaard, Bjarni Mikkelsen, Michela Paoletti, Giuseppe Nascetti, Arne Levsen, Simonetta Mattiucci
Summary: This study investigated the distribution and genetic diversity of anisakid nematodes of the genus Anisakis in cetaceans, and found a strong host preference by these parasites for certain cetacean species or families. Additionally, the study revealed the role of cetacean populations from different waters in shaping the population genetic structure of Anisakis nematodes for the first time.
SCIENTIFIC REPORTS
(2022)
Article
Ecology
Antonio Bode, Camilo Saavedra, Miguel Alvarez-Gonzalez, Marina Arregui, Manuel Arbelo, Antonio Fernandez, Luis Freitas, Monica A. Silva, Rui Prieto, Jose M. N. Azevedo, Joan Gimenez, Graham J. Pierce, M. Begona Santos
Summary: Dolphins play a key role in marine food webs, and can be used as indicators of large-scale changes in the ecosystem. This study assessed the trophic adaptations of dolphin species to recent changes in feeding resource availability using stable isotope ratios. The results showed different impacts of oceanography and food web changes on the trophic ecology of dolphin species.
MARINE ECOLOGY PROGRESS SERIES
(2022)
Review
Environmental Sciences
Paula Suarez-Bregua, Miguel Alvarez-Gonzalez, Kim M. Parsons, Josep Rotllant, Graham J. Pierce, Camilo Saavedra
Summary: Monitoring marine mammal populations is crucial for assessing their status. Traditional methods have limitations, while environmental DNA (eDNA) offers a cost-effective and sensitive tool to monitor marine mammals, especially for rare, elusive, or threatened species.
FRONTIERS IN MARINE SCIENCE
(2022)
Article
Marine & Freshwater Biology
Bianca T. C. Bobowski, Anne Marie Power, Graham J. J. Pierce, Ana Moreno, Ane Iriondo, Julio Valeiras, Inna M. M. Sokolova, Daniel Oesterwind
Summary: In order to maintain or obtain good environmental status in the Northeast Atlantic and northern Mediterranean Sea, EU-MSFD was implemented in 2008. EU Member States are responsible for assessing the current state of their adjacent waters to ensure sustainable use of marine resources and healthy ecosystems. However, there are still gaps in the assessment of cephalopods and other important marine species.
Article
Marine & Freshwater Biology
Susannah V. Calderan, Tracey Dornan, Sophie Fielding, Ryan Irvine, Jennifer A. Jackson, Russell Leaper, Cecilia M. Liszka, Paula A. Olson, Martin A. Collins
MARINE MAMMAL SCIENCE
(2023)
Article
Fisheries
Gillian B. Ainsworth, Pablo Pita, Cristina Pita, Katina Roumbedakis, Graham J. Pierce, Catherine Longo, Gregory Verutes, Tereza Fonseca, Daniela Castelo, Carlos Montero-Castano, Julio Valeiras, Francisco Rocha, Laura Garcia-de-la-Fuente, Jose Luis Acuna, M. del Pino Fernandez Rueda, Alberto Garazo Fabregat, Alberto Martin-Aristin, Sebastian Villasante
Summary: This research contributes to the UN Decade of Ocean Science by identifying priorities for sustainable octopus production and commercialization in Spanish artisanal fisheries. The study suggests that certification incentives and cooperative approaches can facilitate environmental, economic, and social sustainability, support the IYAFA Global Action Plan, and help achieve UN Sustainable Development Goals.
REVIEWS IN FISH BIOLOGY AND FISHERIES
(2023)
Review
Biodiversity Conservation
Gillian B. Ainsworth, Pablo Pita, Joao Garcia Rodrigues, Cristina Pita, Katina Roumbedakis, Tereza Fonseca, Daniela Castelo, Catherine Longo, Anne Marie Power, Graham J. Pierce, Sebastian Villasante
Summary: Aquatic food systems are crucial for global food security, but economic growth poses a threat to marine systems. Cephalopod fisheries can contribute to food security, but their sustainable exploitation requires understanding the connections between nature, food system policies, and human wellbeing. A global literature review examined cephalopod food systems, value chains, and market drivers. The study identified key factors for transitions towards increased food security and outlined requirements for a sustainable cephalopod food system policy landscape.