Recent distribution of Echinodermata species in Spitsbergen coastal waters

Deja, Kajetan; Węsławski, Jan Marcin; Borszcz, Tomasz; Włodarska‐Kowalczuk, Maria; Kukliński, Piotr; Bałazy, Piotr; Kwiatkowska, Patrycja

doi:10.1515/popore-2016-0027

Cited by 13 publications

(7 citation statements)

References 34 publications

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“…Furthermore, data from Wiktor et al (2022) suggests changes in the macroalgae composition in the Arctic with ongoing climate change (Wiktor et al, 2022). Three new starfish species were reported off the western coasts of Svalbard the first time: Doplopteraster multipes, Marthasterias glacialis and Asterias rubens, which had previously been reported only further south at the Norwegian coast (Deja et al, 2016).…”

Section: Range Shiftsmentioning

confidence: 92%

Revisiting the footprints of climate change in Arctic marine food webs: An assessment of knowledge gained since 2010

2023

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In 2011, a first comprehensive assessment of the footprints of climate change on Arctic marine ecosystems (such as altered distribution ranges, abundances, growth and body conditions, behaviours and phenologies, as well as community and regime shifts) was published. Here, we re-assess the climate-driven impacts reported since then, to elucidate to which extent and how observed ecological footprints have changed in the following decade (2011 to 2021). In total, 98 footprints have been described and analysed. Most of those impacts reported in the 2011 assessment are reconfirmed and can, hence, be assumed as continuing trends. In addition, novel footprints (behavioural changes, diet changes, altered competition and pathogen load) are described. As in 2011, most reported footprints are related to changes in distribution ranges, abundances, biomass and production. Range shifts have mostly been observed for fish species, while behavioural changes have mainly been reported for mammals. Primary production has been observed to further increase in Arctic seas. The footprints on pelagic herbivores, particularly the key species Calanus spp., are less clear. In comparison to 2011, more complex, cascading effects of climate change, such as increased bowhead whale body conditions due to increased primary production, have been reported. The observed footprints, and the trends that they indicate, strongly suggest that due to further northward range shifts of sub-Arctic and boreal species Arctic seas are likely to experience increasing species richness in the future. However, a tipping point may be reached, characterized by subsequent biodiversity decline, when Arctic-endemic species will go extinct as ocean warming and/or acidification will exceed their physiological adaptation capacity. Furthermore, as invading boreal species have a competitive advantage due to their wider physiological and trophic range, Arctic species abundances are predicted to decrease. Overall, the future Arctic Ocean will very likely experience increasing numbers and intensities of climate-change footprints.

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Section: Range Shiftsmentioning

confidence: 92%

Revisiting the footprints of climate change in Arctic marine food webs: An assessment of knowledge gained since 2010

2023

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“…This level of taxonomic resolution was su cient for the distinction of both meso-scale (depth gradient) and large-scale (different fjords and bays) distribution patterns of benthic epifauna. The results have shown that the most distinct benthic community, dominated by brittle stars (most likely Ophiocten sericeum or Ophiura robusta (Deja et al 2016)), was present in Borebukta at 3-52 depths. Burgerbukta was unique for high numbers of shrimps and bryozoans Alcyonidium sp.…”

Section: What De Nes Differences Of Benthic Assemblages: Geographical...mentioning

confidence: 93%

Application of underwater imagery for the description of upper sublittoral benthic communities in glaciated and ice-free Arctic fjords

Medelytė

Šiaulys²,

Daunys³

et al. 2022

Polar Biol

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Complex bottom topography and the presence of oating ice signi cantly complicates the use of traditional sampling methods in Arctic coastal waters, forcing to look for alternative approaches. One such technique is underwater imagery, which has grown in popularity in recent decades based on its effectiveness in hard-to-reach places. We demonstrate that an underwater video mosaic can be a reliable method for comparative analysis of Arctic habitats under the glacier in uence and glacier in uence-free habitats. The lming was carried out in the upper sublittoral (2-65 m) of Hornsund and Isfjorden areas, representing two ice-free and two glaciated bays. Video footage was obtained using an ROV mounted and "drop-down" video cameras and transformed into 148 video mosaics. Based on the lowest possible taxonomic level, 31 biological features (morphospecies) were identi ed and ascribed to benthic functional groups based on their feeding and mobility type. The morphospecies and functional groups were used for the comparative analysis of benthic communities. The study found that melting glaciers have a stronger impact on the structure of benthic communities across geographical areas. Morphological and functional composition of macrofauna re ected conditions in glacier in uence and in uence-free, and turbid water riverine bays. We discovered greater abundances of motile scavengers in glacier in uence bays whereas glacier in uence-free bay had more sessile suspension lters and glacier in uence-free riverine bay was dominated by discreetly motile and deposit feeders. Underwater imagery mosaics have proven to be a fairly reliable tool for eldwork-e cient quantitative characterization of benthic communities in the hard-to-reach Arctic's upper sublittoral. HighlightsCombination of underwater imagery and morphospecies approaches provides su cient data to quantify the dominant macrobenthos forms in the arctic fjords.The morphospecies approach makes it possible to reveal the differences in the functional structure of the benthos in the periglacial and glacier in uence-free areas of the upper sublittoral.Underwater imagery may be recommended for eldwork-e cient assessment of benthos in conditions of complex bottom topography and the presence of oating ice.Consequently, this study highlights a greater in uence of melting glaciers on the structure of benthic communities than across geographical areas

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“…This was suggested to be either due to a fluctuating slow natural range extension (Węsławski et al 2011), a single exceptional warm inflow of Atlantic water carrying larvae north (Berge et al 2005), and/or adult specimens transported to Svalbard by rafted debris or ship traffic (Węsławski and Kotwicki 2018;Leopold et al 2019). Other examples of temperate and boreal species being transported northwards with the extension of the North Atlantic Current are the euphausiid Meganyctiphanes norvegica (Buchholz et al 2010) and the starfish Asterias rubens (Deja et al 2016). The Norwegian Biodiversity Information Centre has identified 31 species to be 'doorstep species' for Svalbard.…”

Section: Introductionmentioning

confidence: 99%

Early detection of marine non-indigenous species on Svalbard by DNA metabarcoding of sediment

Heuvel-Greve

Brink²,

Glorius³

et al. 2021

Polar Biol

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Non-indigenous species (NIS) in the Arctic have an increased likelihood of arrival from ship traffic in the region, while the survival potential of the species becomes more likely in a warming environment. Monitoring is essential to detect the rate and magnitude of the establishment of NIS. In this study, a list of 123 potential marine NIS for Svalbard was drafted and the presence of marine NIS in soft sediment of Kongsfjorden in Svalbard was assessed using molecular metabarcoding techniques. For 37 species, including eight potential Arctic NIS, we generated new 18S and/or COI barcode sequences to improve the available online reference databases. In total, 299 species were identified in the sediment samples, including seven potential NIS. Three of these potential NIS have not been reported before in Svalbard: the harpacticoid copepod Euterpina acutifrons, and the ascidians Botrylloides violaceus and Molgula manhattensis. Another novel observation for Svalbard was the polychaete Chone mollis. Additional studies are needed to assess whether the NIS have been established on Svalbard and what their potential impact on the local system may be. Metabarcoding proved to be an effective monitoring tool to detect the presence of new species in Svalbard marine waters. We advise its use to set up a baseline record for the presence of NIS at points of entry, especially harbours. This approach is also valuable for biodiversity monitoring, in particular the detection of small organisms and life stages that are hard to identify using current visual techniques.

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Recent distribution of Echinodermata species in Spitsbergen coastal waters

Cited by 13 publications

References 34 publications

Revisiting the footprints of climate change in Arctic marine food webs: An assessment of knowledge gained since 2010

Revisiting the footprints of climate change in Arctic marine food webs: An assessment of knowledge gained since 2010

Application of underwater imagery for the description of upper sublittoral benthic communities in glaciated and ice-free Arctic fjords

Early detection of marine non-indigenous species on Svalbard by DNA metabarcoding of sediment

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