Common macrofaunal dominant species in the sediments of some north Norwegian and Svalbard glacial fjords

Holte, Børge; Gulliksen, Bjørn

doi:10.1007/s003000050262

Cited by 74 publications

(44 citation statements)

References 12 publications

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“…Also Nor− wegian fjords are less diverse with 109 taxa in Holandsfjord (Holte 1998) and 125 taxa in Balsfjord (Oug 2000). Holte and Gulliksen (1998) Ingolfsson 1996). Subarctic waters around Tromsø have high diversity (395 species) which is mainly due to organic enrichment (Holte and Oug 1996).…”

Section: Discussionmentioning

confidence: 99%

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: Discussionmentioning

confidence: 99%

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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“…The majority of the studies focused on the structure of benthic communities in the fjords of Spitsbergen (Holte and Gulliksen 1998;Wlodarska-Kowalczuk et al 1998;Hop et al 2002;Kendall et al 2003;Wlodarska-Kowalczuk and Pearson 2004;Renaud et al 2007), off the western coast of Spitsbergen (Blacker 1957(Blacker , 1965, and on the shelf break of the Fram Strait Wlodarska-Kowalczuk and Pearson 2004). The deep-sea benthos of the eastern Fram Strait have been intensively investigated in the course of the long-term HAUSGAR-TEN project (Soltwedel et al 2005(Soltwedel et al , 2009Hoste et al 2007;Budaeva et al 2008;Bergmann et al 2009Bergmann et al , 2011van Oevelen et al 2011).…”

Section: Introductionmentioning

confidence: 99%

Distribution and composition of the epibenthic megafauna north of Svalbard (Arctic)

Sswat

Gulliksen

Menn³

et al. 2015

Polar Biol

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Benthic communities north of Svalbard are less investigated than in other Arctic shelf regions, as this area was covered by sea-ice during most of the year. Improving our knowledge on this region is timely, however, since climate change is strongly evident there, particularly with regard to the extent of sea-ice decline and its huge ecological impact on all marine biota, including the benthos. Moreover, longer ice-free periods will certainly lead to an increase in human activity levels in the area, including bottom trawling. In two adjacent shelf and slope regions off northern Svalbard, we studied the composition of epibenthic megafauna and seafloor habitat structures by analyzing seabed images taken with both still and video cameras. In addition, we also used an Agassiz trawl to catch epibenthic organisms for ground-truthing seabedimage information. A wide variety of mostly sessile organisms 141 epibenthic taxa were identified in the images. The brittle star Ophiura sarsii and the soft coral Gersemia rubiformis were the most common species. At all stations [300 m in depth, evidence of trawling activities was detected at the seabed. The distribution of the benthic fauna in the study area exhibited a clear depth zonation, mainly reflecting depth-related differences in seabed composition. We conclude that natural factors determining the composition of the seafloor mostly affect the distribution and composition of epibenthic assemblages. Anthropogenic impact indicated by the trawl scours found is likely also important at smaller spatial scales.

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“…Pearson, 1980;Gulliksen et al,1985;Holte and Gulliksen, 1998;Larsen, 1997;Kendall et al, 2003;Wlodarska-Kowalczuk et al,1998;Wlodarska-Kowalczuk and Pearson, 2004) and even in comparison with the Antarctic ecosystem (Dawber and Powell, 1997;Arntz et al,1994;Jazdzewski et al, 2001), there is a lack of biological information on the Magellan region. However, this region represents a corner-stone for elucidating several biogeographical and ecological questions related to latitudinal gradients in species diversity or biomass (Clarke, 1992;Gray, 2001a;Piepenburg et al, 2002), origin and evolution of the (sub)Antarctic biota (Gallardo et al, 1992;Arntz and Ríos, 1999) or the split of zoogeographical units along the western coast of South America (Brattström and Johanssen, 1983;Lancellotti and Vásquez, 2000;Camus, 2001;Montiel et al, 2004).…”

Section: Introductionmentioning

confidence: 99%

Soft-bottom macrobenthic faunal associations in the southern Chilean glacial fjord complex

Ríos¹,

Mutschke²,

Montiel³

et al. 2005

Sci. Mar.

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SUMMARY: Macrobenthic associations were investigated at 29 sampling stations with a semi-quantitative Agassiz trawl, ranging from the South Patagonian Icefield to the Straits of Magellan in the South Chilean fjord system. A total of 1,895 individuals belonging to 131 species were collected. 19 species belong to colonial organisms, mainly Bryozoa (17 species) and Octocorallia (2 species). The phylum Echinodermata was the most diverse in species number (47 species), with asteroids (25 species) and ophiuroids (13 species) being the best represented within this taxon. Polychaeta was the second dominant group in terms of species richness (46 species). Multidimensional scaling ordination (MDS) separated two station groups, one related to fjords and channels off the South Patagonian Icefield and the second one to stations surrounding the Straits of Magellan. 45 species account for 90% of the dissimilarity between these two groups. These differences can mainly be explained by the influence of local environmental conditions determined by processes closely related to the presence/absence of glaciers. Abiotic parameters such as water depth, type of sediment and chemical features of the superficial sediment were not correlated with the numbers of individuals caught by the Agassiz trawl in each group of sampling stations.

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Common macrofaunal dominant species in the sediments of some north Norwegian and Svalbard glacial fjords

Cited by 74 publications

References 12 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 and composition of the epibenthic megafauna north of Svalbard (Arctic)

Soft-bottom macrobenthic faunal associations in the southern Chilean glacial fjord complex

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