Tanaidacean faunas of the Sea of Okhotsk and northern slope of the Kuril-Kamchatka Trench

Stępień, Anna; Pabis, Krzysztof; Błażewicz, Magdalena

doi:10.1016/j.pocean.2019.102196

Cited by 12 publications

(16 citation statements)

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“…The scale of the sampled area is crucial for all species richness assessments because it allows for the penetration of a larger number of habitats (Błażewicz et al, 2019a). Nevertheless, a large number of species new to science and a large number of singletons were visible in all earlier tanaidacean studies (Pabis et al, 2014(Pabis et al, , 2015Błażewicz-Paszkowycz et al, 2015;Stępień et al, 2018Stępień et al, , 2019Błażewicz et al, 2019a;Jóźwiak et al, 2020), although not at the scale recorded in the Gulf of Guinea.…”

Section: Discussion Diversity Patterns Along a Depth Gradientmentioning

confidence: 99%

“…This problem is widespread in studies of other groups of peracarid crustaceans. Kaiser et al (2009) found that in the Amundsen Sea, 96% of collected isopods were new to science, and a large majority of those taxa are yet to be described, as in tanaidacean studies (Pabis et al, 2014(Pabis et al, , 2015Błażewicz-Paszkowycz et al, 2015;Stępień et al, 2018Stępień et al, , 2019Błażewicz et al, 2019a;Jóźwiak et al, 2020). These problems must be addressed with studies of both particular taxonomic groups and particular regions of the world.…”

Section: Discussionmentioning

confidence: 99%

“…Our knowledge of this group of crustaceans is centered in taxonomy (Błażewicz-Paszkowycz et al, 2012). Few deep-sea biodiversity assessments of tanaidacean communities exist, but all demonstrate a large number of singletons and a high percentage of species new to science (Pabis et al, 2014(Pabis et al, , 2015Błażewicz-Paszkowycz et al, 2015;Stępień et al, 2018Stępień et al, , 2019Błażewicz et al, 2019a;Jóźwiak et al, 2020). Even fewer studies were based on quantitative samples (Błażewicz-Paszkowycz et al, 2015;Błażewicz et al, 2019a;Jóźwiak et al, 2020), though general information like the total number of species or the total number of individuals can be also found in less targeted studies of deepsea macrofauna (e.g., Grassle and Maciolek, 1992;Cosson et al, 1997;McCallum et al, 2015;Wilson, 2017).…”

Section: Introductionmentioning

confidence: 99%

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A Paradise for Rare Species: Tanaidacean Fauna of the West African Continental Margin

et al. 2022

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The benthic ecology of the Gulf of Guinea is critically understudied, and knowledge about the composition and biodiversity of the tanaidacean communities remains lacking. Our analysis of tanaidacean collection from 270 quantitative samples collected using 0.1 m2 van Veen grab along the Ghanaian coast (nine transects, six stations at each transect, 25–1,000 m depth range) reveals a high species richness and very low abundance. The mean density of Tanaidacea across all the samples equals only 0.03 ± 0.55 ind./0.1 m2. A total of 87 tanaidacean species were recorded, of which only three were known for science (3.4%), emphasizing the need for intensified taxonomic effort in this region. Circa 40% of the species were singletons, 98% of the species had a total abundance lower than 10 individuals, and approximately half of the species were found only in one sample. The highest species richness was recorded in the slope (500–1,000 m), despite the elevated levels of barium and hydrocarbons at those depths. This area was also characterized by the most unique species composition. Species accumulation curves did not reach an asymptote, suggesting an undersampling of the area and a great rarity of the species. Results of the canonical correspondence analysis (CCA) and cluster analysis demonstrated a positive influence of oxygen concentration and fluorescence, particularly in the shallow shelf sites (25–50 m), which were characterized by a higher abundance of Tanaidacea. Depth zonation of tanaidacean communities with a division between shallow-water taxa (Leptocheliidae Lang, 1973 and Kalliapseudidae Lang, 1956) through families with wide bathymetric range (Pseudotanaidae Sieg, 1976, Apseudidae Leach, 1814) to the true deep-sea forms (Paranarthrurellidae Błażewicz, Jóźwiak and Frutos, 2019) is also evident. We further discuss the problems associated with multivariate analysis of highly speciose but less abundant taxa.

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Section: Discussion Diversity Patterns Along a Depth Gradientmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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A Paradise for Rare Species: Tanaidacean Fauna of the West African Continental Margin

et al. 2022

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“…Consequently, bathyal or deeper abyssal ecosystems may include fewer individuals but a larger number of species than shallower areas (Pabis et al 2014. This trend of diversity changes according to depth does not constitute a general pattern though, and studies on the deep part of the Sea of Okhotsk (SoO) show tanaidaceans to be diverse but as numerous as those on the shelf (Stępień et al 2019b). Organic matter, as a proxy of ecosystem productivity, has been suggested to be a key factor shaping Tanaidacea distribution in marine ecosystems, but ecological constraints are far from being understood (McCallum et al 2015).…”

Section: Habitatmentioning

confidence: 99%

Biogeographic Atlas of the Deep NW Pacific Fauna

Saeedi¹,

Brandt²

2020

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We would like to thank the captains and crews of RVs 'Akademik M.A. Lavrentyev' and 'Sonne' , student helpers, and anyone else who contributed to sample management and sorting the specimens. Special thanks to Mark Costello for his advice and Marianna Simões for her help in this book project. A very special thanks to James Reimer for editing and English proofreading of this chapter and to Rachel Downey for English proofreading most of the chapters of this book.

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“…The paratanaoidean family Pseudotanaidae (Sieg, 1976) often dominates deep-sea tanaidacean communities (Golovan et al 2013;Błażewicz et al 2019;Stępień et al 2019;Jóźwiak et al 2020). Recently, the family has received more taxonomical attention, resulting in a total of 74 formally described species.…”

Section: Introductionmentioning

confidence: 99%

Pseudotanaidae Sieg, 1976 (Crustacea: Peracarida) from the Southern Ocean: diversity and bathymetric pattern

Błażewicz

Jakiel

Bamber³

et al. 2021

The European Zoological Journal

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From the BIOPEARL 1 and 2 Programs to the Amundsen and Scotia Seas a large series of Tanaidacea was collected using an epibenthic sled. We carried out a thorough morphological analysis of 169 individuals and provide a description of 14 pseudotanaid species distributed in three genera. Twelve species of the genus Pseudotanais are represented by three morphogroups: "affinis+longisetosus", "denticulatus+abathagastor", and "forcipatus". We provide a redescription of Akanthinotanais gaussi, supplement the definitions of the genera Akanthinotanais and Beksitanais, and transfer Pseudotanais abyssi to the genus Beksitanais. Based on the literature and new data, we summarize knowledge of the Antarctic Pseudotanaidae and discuss this family's spatial and bathymetric distribution. http://www.zoobank.org/urn:lsid:zoobank.org:pub:1A8F69F7-454D-4CB1-B745-3660AFD3BB82

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Tanaidacean faunas of the Sea of Okhotsk and northern slope of the Kuril-Kamchatka Trench

Cited by 12 publications

References 40 publications

A Paradise for Rare Species: Tanaidacean Fauna of the West African Continental Margin

A Paradise for Rare Species: Tanaidacean Fauna of the West African Continental Margin

Biogeographic Atlas of the Deep NW Pacific Fauna

Pseudotanaidae Sieg, 1976 (Crustacea: Peracarida) from the Southern Ocean: diversity and bathymetric pattern

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