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

Kędra, Monika; Gromisz, Sławomira; Jaskuła, Radomir; Legeżyńska, Joanna; Maciejewska, Barbara; Malec, Edyta; Opanowski, Artur; Ostrowska, Karolina; Włodarska‐Kowalczuk, Maria; Węsławski, Jan Marcin

doi:10.2478/v10183-010-0008-y

Cited by 19 publications

(16 citation statements)

References 29 publications

(28 reference statements)

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“…Both fjords have been intensively sampled for the last 35 years and can be treated as model polar fjord ecosystems. Information about the benthic diversity of those basins were recently summarized by Kędra et al (2010a) and Siciński et al (2011) as a result of two large polar marine programs: Marine Biodiversity and Ecosystem Functioning (MarBEF) and Census of Antarctic Marine Life (CAML).…”

Section: Introductionmentioning

confidence: 99%

Distinct or similar? Soft bottom polychaete diversity in Arctic and Antarctic glacial fjords

2014

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The main aim of this study was to compare the polychaete communities in two similar polar areas: an Arctic fjord, Hornsund (Svalbard) and an Antarctic fjord, Ezcurra Inlet (South Shetlands). This is the first attempt to compare Arctic and Antarctic diversity based on fully comparable datasets. Forty van Veen grab samples were collected in each fjord: twenty replicates were taken in each of two fjord areas characterized by a different level of glacial disturbance-in the inner (glacial bay) and outer (fjord mouth) region of both fjords, from depths of about 100 m in 2005 (Hornsund) and in 2007 (Ezcurra Inlet). In the glacial bays, species richness and diversity were significantly higher in Ezcurra Inlet than in Hornsund due to higher rate of glacial disturbance in the latter one. In the outer areas, species richness was similar in both fjords, although diversity values were higher in Ezcurra Inlet. Polychaete species richness in the habitats characterized by similar level of disturbance (outer areas of the fjords) was the same in both polar regions. At this small scale, where community drivers are very similar, the species richness seems to be independent from the local or regional species pool.

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Section: Introductionmentioning

confidence: 99%

Distinct or similar? Soft bottom polychaete diversity in Arctic and Antarctic glacial fjords

2014

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“…An early list of polychaetes in the shallow depths of the Hornsund fjord was provided by Gromisz (1992). Recently, an updated species list is included in Kędra et al (2010b).…”

Section: Introductionmentioning

confidence: 99%

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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“…Altogether they have collected at least 300 benthic samples collected in all habitats and depth zones present in the fjord (Włodarska-Kowalczuk and Pearson 2004;Kaczmarek et al 2005;Kędra et al 2011), and have never recorded the presence of lacydoniid worms (Włodarska-Kowalczuk, personal communication). Neither has it been present in the second most extensively studied fjord, the west Spitsbergen fjord: Hornsund (Kędra et al 2010). Also, the marine invertebrate species list for Svalbard waters prepared by Palerud et al (2004), which comprises 137 published and unpublished works about marine macrofauna in Svalbard waters, does not include any lacydoniids.…”

Section: Discussionmentioning

confidence: 99%

First records of Lacydonia eliasoni Hartmann-Schröder, 1996 (Polychaeta: Phyllodocida) in the European Arctic

Mazurkiewicz¹,

Włodarska‐Kowalczuk²,

Legeżyńska³

et al. 2017

Polish Polar Research

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Lacydonia (Polychaeta: Phyllodocida) is a poorly known genus containing 16 species that are sporadically collected in low densities all over the world oceans. During three cruises (in June 2014 in Ullsfjorden, northern Norway, in January 2015 in Kongsfjorden, and in June 2012 in Smeerenburg, Svalbard) nine specimens of Lacydonia eliasoni were found on sandy and muddy sediments at depths from 180 to 350 m. All specimens were incomplete and consisted of 10 to 29 chaetigers. This study presents the first record of the Lacydonia genus in the waters of Svalbard as well as the first record of L. eliasoni in coastal waters off northern Norway. This species has been reported previously in the Skagerrak and Trondheimsfjorden (southern Norway), our findings therefore may indicate a northward extension of its range, possibly due to climate changes.

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

Cited by 19 publications

References 29 publications

Distinct or similar? Soft bottom polychaete diversity in Arctic and Antarctic glacial fjords

Distinct or similar? Soft bottom polychaete diversity in Arctic and Antarctic glacial fjords

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

First records of Lacydonia eliasoni Hartmann-Schröder, 1996 (Polychaeta: Phyllodocida) in the European Arctic

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