Multidecadal stability of benthic community structure in a high-Arctic glacial fjord (van Mijenfjord, Spitsbergen)

Renaud, Paul E.; Włodarska‐Kowalczuk, Maria; Trannum, Hilde Cecilie; Holte, Børge; Węsławski, Jan Marcin; Cochrane, Sabine; Dahle, S.; Gulliksen, Bjørn

doi:10.1007/s00300-006-0183-9

Cited by 93 publications

(66 citation statements)

References 46 publications

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“…Similar results were obtained from other west Spitsbergen fjords for soft bot− tom fauna: 184 taxa were noted in Van Mijen fjord (Renaud et al 2007), 242 taxa in Kongsfjorden (Włodarska−Kowalczuk and Pearson 2004;Kędra et al 2010). Włodarska−Kowalczuk et al (1998) listed 116 taxa in glacial bays in Spitsbergen and later gave precise list of 95 taxa for Yoldiabukta glacial bay in Isfjorden (Włodarska−Kowalczuk et al 1999 Chao2 estimator indicated the possible presence of over 400 species, so possi− bly about 100 species are still to be found in the fjord (taking into account 60 spe− cies previously found in Hornsund and not noted in this study).…”

Section: Discussionsupporting

confidence: 86%

Soft bottom macrofauna of an All Taxa Biodiversity Site: Hornsund (77○N, Svalbard)

Kędra¹,

Gromisz²,

Jaskuła³

et al. 2010

Polish Polar Research

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Abstract:Hornsund, an Arctic fjord in the west coast of Spitsbergen (Svalbard), was se− lected as All Taxa Biodiversity Inventory (ATBI) site under EU 5th Framework Concerted Action BIOMARE (2000)(2001)(2002), especially due to its pristine, undisturbed natural charac− ter. On the base of large material (89 stations located throughout the fjord and 129 Van Veen grab samples) collected during cruises of RV Oceania in July in 2002, 2003, 2005 and 2007 and literature search a comprehensive list of species recorded within Hornsund area, on the soft bottom with depth range of 30-250 m is provided. Over 220 species were identified in− cluding 93 species of Polychaeta, 62 species of Mollusca and 58 species of Crustacea. Spe− cies list is supported by information on the zoogeographical status, body length and biologi− cal traits of dominant species. Need for further research on Hornsund soft bottom fauna with more sampling effort is highlighted.

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Section: Discussionsupporting

confidence: 86%

Soft bottom macrofauna of an All Taxa Biodiversity Site: Hornsund (77○N, Svalbard)

Kędra¹,

Gromisz²,

Jaskuła³

et al. 2010

Polish Polar Research

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“…m -2 in Kongsfjorden (Włod-arska-Kowalczuk and Pearson 2004; Kędra et al 2010a), 133 ind. m -2 in van Mijenfjord (Renaud et al 2007). A similar pattern of high meiofaunal density in Hornsund was found by Grzelak and Kotwicki (2012).…”

Section: Discussionsupporting

confidence: 79%

Distribution patterns of polychaete fauna in an Arctic fjord (Hornsund, Spitsbergen)

et al. 2013

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Polychaetes are one of the most important groups of benthic organisms in marine ecosystems. They dominate on the Arctic shelf and play an important role in ecosystem functioning. This study focuses on the polychaete biodiversity and their distribution patterns in Hornsund, an open glacial fjord, in western Spitsbergen and provides important baseline data for future studies of temporal fluctuations in benthic fauna. The main aim of this study was to assess how the polychaete abundance, biomass, diversity, community structure, and function vary along the Hornsund fjord's axis, in relation to the environmental factors. Eighty-eight polychaete taxa were identified; an average density was 457 ind. m -2 ± 237.5 SD. Three assemblages were distinguished (INNER, MIDDLE, and OUTER) along the fjord axis, reflecting the intensity of glacial disturbance. A clear division between the highly disturbed inner part of the fjord (Brepollen) and the less impacted middle and outer parts was observed. Continuous gradients in abundance, biomass, and diversity were found with all those values diminishing toward the inner region of the fjord. The polychaete assemblages' indices were significantly correlated with bottom temperature, sediment characteristics (grain size), and distance to the glacier (longitude). No significant correlations were found with depth or total organic carbon content. Carnivore and motile surface deposit feeding polychaete species dominated in the areas close to the glaciers, while the OUTER community was dominated by carnivores and surface sessile and discretely motile species, and had more complex trophic structure, with multiple species representing different functional groups including carnivores, sessile, discretely motile, and motile surface deposit feeders and motile burrowers.

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“…This also follows a general observation by Thrush et al (2006) regarding the homogenisation of habitats that follows global warming. Stability refers to the taxa presence in the fjords (Renaud et al 2007;Berge et al 2009), whereas homogeneity was recorded on the shelf (Dyer et al 1984). Species having pelagic larvae, as is the case for most of our echinoderms, are expected to expand their occurrence ranges with the ongoing borealisation of the Svalbard area (Berge et al 2005).…”

Section: Discussionmentioning

confidence: 99%

“…Recently, some of the old sampling stations were revisited and revealed a surprising stability of some animal taxa such as Decapoda (Berge et al 2009) and the benthos in general (Renaud et al 2007;Kędra et al 2011). Large-scale fishery research in the Barents and Norwegian seas led to the use of by-catch animals that may serve as indicators of hydrological and climatic variability (Blacker 1957;Dyer et al 1984).…”

Section: Introductionmentioning

confidence: 99%

Recent distribution of Echinodermata species in Spitsbergen coastal waters

Deja¹,

Węsławski²,

Borszcz³

et al. 2016

Polish Polar Research

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Thirty-two species of echinoderms from epibenthic sledges, dredges, scuba diving, and other samples (in total: 467 samples and c. 20 000 specimens) from fjords and coastal waters off Spitsbergen were analysed between 1996 and 2014. The most numerous group of echinoderms in the coastal waters off Spitsbergen is brittle stars (78% of the total individuals). The echinoderms do not form any clear assemblages according to depth or distance from glacial sedimentation and substrate. Some species prefer hard bottom (Strongylocentrotus droebachiensis) or water free from glacial suspensions (Ophiopholis aculeata). In contrast to the species listed above, we also found opportunistic species such as the starfish Urasterias lincki and the brittle star Ophiocten sericeum. These two species are distributed quite uniformly, regardless of the environmental factors. The majority of the species prefer a soft bottom below 200 m.

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Multidecadal stability of benthic community structure in a high-Arctic glacial fjord (van Mijenfjord, Spitsbergen)

Cited by 93 publications

References 46 publications

Soft bottom macrofauna of an All Taxa Biodiversity Site: Hornsund (77○N, Svalbard)

Soft bottom macrofauna of an All Taxa Biodiversity Site: Hornsund (77○N, Svalbard)

Distribution patterns of polychaete fauna in an Arctic fjord (Hornsund, Spitsbergen)

Recent distribution of Echinodermata species in Spitsbergen coastal waters

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