International megabenthic long-term monitoring of a changing arctic ecosystem: Baseline results

Jørgensen, Lis Lindal; Logerwell, Elizabeth; Стрелкова, Н. А.; Zakharov, Denis V.; Roy, Virginie; Nozères, Claude; Bluhm, Bodil A.; Ólafsdóttir, Steinunn H.; Burgos, Julian M.; Sørensen, J.; Зимина, О. Л.; Rand, Kimberly M.

doi:10.1016/j.pocean.2021.102712

Cited by 9 publications

(5 citation statements)

References 80 publications

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“…This, in turn, allows users to perform analyses on joint data sets and thereby contributes to a better understanding across large temporal and spatial scales. It is important to note, however, that case-by-case decisions are necessary to appropriately pool or aggregate the partly inconsistent data sets (i.e., data sets differing in sampling approaches) provided by CRITTERBASE so that the data can eventually be used for joint analyses 47 . Data analysts should pay adequate attention and be vigilant in order to correctly merge the data for their purpose before starting any data analysis.…”

Section: Discussionmentioning

confidence: 99%

CRITTERBASE, a science-driven data warehouse for marine biota

et al. 2022

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Data on marine biota exist in many formats and sources, such as published literature, data repositories, and unpublished material. Due to this heterogeneity, information is difficult to find, access and combine, severely impeding its reuse for further scientific analysis and its long-term availability for future generations. To address this challenge, we present CRITTERBASE, a publicly accessible data warehouse and interactive portal that currently hosts quality-controlled and taxonomically standardized presence/absence, abundance, and biomass data for 18,644 samples and 3,664 benthic taxa (2,824 of which at species level). These samples were collected by grabs, underwater imaging or trawls in Arctic, North Sea and Antarctic regions between the years 1800 and 2014. Data were collated from literature, unpublished data, own research and online repositories. All metadata and links to primary sources are included. We envision CRITTERBASE becoming a valuable and continuously expanding tool for a wide range of usages, such as studies of spatio-temporal biodiversity patterns, impacts and risks of climate change or the evidence-based design of marine protection policies.

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Section: Discussionmentioning

confidence: 99%

CRITTERBASE, a science-driven data warehouse for marine biota

et al. 2022

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“…All invertebrate benthos catch from the shrimp trawl surveys was identified onboard by benthic experts alongside fish experts (Zakharov et al, 2018;Jørgensen et al, 2019;Zakharov et al, 2020;Jørgensen et al, 2022). Cephalopods usually were treated as the other benthos bycatch taxa onboard (Zakharov et al, 2018;Jørgensen et al, 2019;Zakharov et al, 2020;Jørgensen et al, 2022). Since 2005, a varying number of cephalopods from the benthos catch was fixed or frozen and analysed ashore by Alexey V. Golikov (A.V.G.)…”

Section: Study Area Survey Details Sampling and Identificationmentioning

confidence: 99%

“…The Atlantification of the Barents Sea is best studied for pelagic and demersal fishes (Fossheim et al, 2015;Frainer et al, 2017), but less so for benthic invertebrate communities (Renaud et al, 2015;Jørgensen et al, 2019). One of the reasons for our poor understanding of the extent of the Atlantification of seafloor communities is the understudied benthic biodiversity and difficulty in obtaining temporal trends in Arctic benthos (CAFF, 2017;Jørgensen et al, 2022).…”

Section: Introductionmentioning

confidence: 99%

Long-term annual trawl data show shifts in cephalopod community in the western Barents sea during 18 years

Golikov,

Jørgensen,

Sabirov

et al. 2024

Front. Mar. Sci.

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Climate change is threatening marine ecosystems on a global scale but particularly so in the Arctic. As a result of warming, species are shifting their distributions, altering marine communities and predator-prey interactions. This is known as the Atlantification of the Arctic. Warming may favor short-lived, opportunistic species such as cephalopods, marine mollusks that previously have been hypothesized to be winners in an ocean of change. To detect temporal regional trends in biodiversity, long-term annual surveys in hotspots of climate change are an unparalleled source of data. Here, we use 18 years of annual bottom trawl data (2005–2022) to analyse cephalopods in the western Barents Sea. More specifically, our research goals are to assess temporal trends in cephalopod fauna composition, abundance and biomass, and to relate these trends to climate change in the western Barents Sea. Main changes in cephalopod diversity and distribution occurred in mid-2000s and early 2010s, which corresponds with a period of warming in the Arctic since the late 1990s/early 2000s. Repeated increased occurrence of the boreal-subtropical cephalopods was recorded from 2005–2013 to 2014–2022. Moreover, the abundance of cephalopods in the area (in general and for most taxa) increased from 2005–2013 to 2014–2022. These observations suggest that the cephalopod community of the Barents Sea is subjected to Atlantification since the 2005–2013 period. This corresponds with previously reported evidence of the Atlantification in fishes and benthic invertebrates in the Barents Sea and benthic invertebrates. ‘Typical’ Arctic cephalopod species such as Bathypolypus spp., Gonatus fabricii and Rossia spp., however, are still much more abundant in the western Barents Sea compared to the deep-sea and the boreal-subtropical species. We also found indirect indications for body-size reduction in Bathypolypus spp. from 2005–2013 to 2014–2022. Overall, the temporal trends in the Barents Sea cephalopod fauna provide evidence for changing marine communities in the Arctic.

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“…Thus, these results suggested that the alleles of Russian A. japonicus has been subject to stronger positive selection. We hypothesize that this is because the Russian population has experienced a higher degree of natural selection to adapt to a high-latitude cold-water environment [48] and that its high-latitude location hinders the exchange of genes with low-latitude A. japonicus, resulting in easier retention of selected genes. The nucleotide diversity (π) analysis of the three populations revealed that China_Group1 had the lowest genetic diversity and the Russia group had higher genetic diversity.…”

Section: Analysis Of the Genetic Structure And Genetic Differentiatio...mentioning

confidence: 99%

Whole-genome resequencing reveals genetic differences and the genetic basis of parapodium number in Russian and Chinese Apostichopus japonicus

et al. 2023

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Background Apostichopus japonicus is an economically important species in the global aquaculture industry. Russian A. japonicus, mainly harvested in the Vladivostok region, exhibits significant phenotypic differentiation, including in many economically important traits, compared with Chinese A. japonicus owing to differences in their habitat. However, both the genetic basis for the phenotypic divergence and the population genetic structure of Russian and Chinese A. japonicus are unknown. Result In this study, 210 individuals from seven Russian and Chinese A. japonicus populations were sampled for whole-genome resequencing. The genetic structure analysis differentiated the Russian and Chinese A. japonicus into two groups. Population genetic analyses indicated that the Russian population showed a high degree of allelic linkage and had undergone stronger positive selection compared with the Chinese populations. Gene ontology terms enriched among candidate genes with group selection analysis were mainly involved in immunity, such as inflammatory response, antimicrobial peptides, humoral immunity, and apoptosis. Genome-wide association analysis yielded eight single-nucleotide polymorphism loci significantly associated with parapodium number, and these loci are located in regions with a high degree of genomic differentiation between the Chinese and Russia populations. These SNPs were associated with five genes. Gene expression validation revealed that three of these genes were significantly differentially expressed in individuals differing in parapodium number. AJAP08772 and AJAP08773 may directly affect parapodium production by promoting endothelial cell proliferation and metabolism, whereas AJAP07248 indirectly affects parapodium production by participating in immune responses. Conclusions This study, we performed population genetic structure and GWAS analysis on Chinese and Russian A. japonicus, and found three candidate genes related to the number of parapodium. The results provide an in-depth understanding of the differences in the genetic structure of A. japonicus populations in China and Russia, and provide important information for subsequent genetic analysis and breeding of this species.

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International megabenthic long-term monitoring of a changing arctic ecosystem: Baseline results

Cited by 9 publications

References 80 publications

CRITTERBASE, a science-driven data warehouse for marine biota

CRITTERBASE, a science-driven data warehouse for marine biota

Long-term annual trawl data show shifts in cephalopod community in the western Barents sea during 18 years

Whole-genome resequencing reveals genetic differences and the genetic basis of parapodium number in Russian and Chinese Apostichopus japonicus

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