Rich and rare—First insights into species diversity and abundance of Antarctic abyssal Gastropoda (Mollusca)

Schwabe, Enrico; Bohn, Jens Michael; Engl, Winfried; Linse, Katrin; Schrödl, Michael

doi:10.1016/j.dsr2.2007.07.010

Cited by 36 publications

(25 citation statements)

References 26 publications

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“…In the course of the ANDEEP cruises and the Diva expeditions to the Eastern South Atlantic (2000 and2005), comparability of results was tried to be achieved among sample sites and invertebrate taxa by using the same deployment protocol for the EBS and by carrying out diversity analyses of samples with the same measures (compare, e.g., Brandt et al 2005;Brandt et al 2007c;Schwabe et al 2007). In agreement with this procedure, station abundances were standardized to 1,000-m 2 trawling distance and as biodiversity measures the Shannon Index (log e ) and Pielou's Evenness were applied (Pielou 1966;Shannon and Weaver 1949).…”

Section: Methodsmentioning

confidence: 99%

“…Analyses of different taxa showed that the invertebrate diversity in the deep Southern Ocean is comparable with temperate and tropic sites, and the number of new species discovered is immense (Brandt et al 2007b). For many taxa, as for example, the Isopoda, Gastropoda, or Anthozoa, the occurrence of a high degree of endemism is reported (Brandt et al 2007c(Brandt et al , 2007dRodriguez et al 2007;Schwabe et al 2007). First results on polychaetes from ANDEEP samples showed a comparably smaller degree of endemism in this group, many species having large geographical distribution ranges (Hilbig 2004;Schüller and Ebbe 2007).…”

Section: Introductionmentioning

confidence: 95%

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Community structure and diversity of polychaetes (Annelida) in the deep Weddell Sea (Southern Ocean) and adjacent basins

2009

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During the austral summer of 2005, the Weddell deep sea and adjacent basins were sampled in the course of the ANDEEP III project. In this study, 19 epibenthic-sledge stations are analyzed, with a focus on species diversity and distribution patterns of polychaetes. The polychaete fauna of the deep Southern Ocean has been found to be similarly speciose and diverse compared with deep-sea basins worldwide. Also, in depths below 2,000 m many polychaete species do not seem to be endemic for certain areas but are rather far spread within the Southern Ocean and beyond. Therefore, ongoing faunal exchanges between adjacent basins, even beyond the Antarctic convergence, are strongly suggested, ruling out a general isolation of the Southern Ocean deep-sea benthos. Driving forces behind species distribution patterns were investigated. The findings indicate that polychaete species' distribution in the Southern Ocean deep sea is rather dependent on local environment than depths.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 95%

Community structure and diversity of polychaetes (Annelida) in the deep Weddell Sea (Southern Ocean) and adjacent basins

2009

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“…If, despite these few faunistic teleconnections, Antarctica ' s fauna differs considerably from that of the adjacent slope and the deep sea, for example in the Weddell Sea (Kaiser et al in press) and from that north of the Antarctic Convergence as for deep -sea gastropods (Schwabe et al 2007 ; Schr ö dl et al submitted ), the reasons must be searched for in polar -, slope -, or deep -sea -specifi c environmental parameters. At the level of evolution one major mechanism to generate such biogeographical heterogeneity on the Antarctic shelf is the climate diversity pump, being a modifi ed vicariance concept (Clarke & Crame 1989 ).…”

Section: Evolutionary L Arge -S Cale P Atterns and N On -C Ircumpolarmentioning

confidence: 99%

Marine Life in the Antarctic

Gutt

Hosie

Stoddart

2010

Life in the World's Oceans

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“…In the NWP individual numbers from neighboring C-EBS hauls are continuously low (see Table 1). Distributional patchiness has been observed for several deepsea taxa including molluscs (Schwabe et al, 2007;Jörger et al, 2014), and is generally linked to the heterogeneity of habitats and the availability of food sources (Rex and Etter, 2010;McClain et al, 2011). The majority of Solenogastres are predators of anthozoan or hydrozoan cnidarians (Salvini-Plawen, 1981), and their occurrence might thus be connected to the presence of their preferred prey.…”

Section: Systematics and Diversity Of Abyssal Solenogastres In The Nomentioning

confidence: 99%

Abyssal Solenogastres (Mollusca, Aplacophora) from the Northwest Pacific: Scratching the Surface of Deep-Sea Diversity Using Integrative Taxonomy

et al. 2017

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Solenogastres (Aplacophora) is a small clade of marine, shell-less worm-molluscs with close to 300 valid species. Their distribution ranges across all oceans, and whereas the vast majority of species has been collected and described from the continental shelf and slope, only few species are known from depths below 4,000 m. Following traditional taxonomy, identification of specimens to species level is complex and time-consuming and requires detailed investigations of morphology and anatomy-often resulting in the exclusion of the clade in biodiversity or biogeographic studies. During the KuramBio expedition (Kuril-Kamchatka Biodiversity Studies) to the abyssal plain of the Northwest Pacific and the Kuril-Kamchatka Trench, 33 solenogaster specimens were sampled from 4,830 m to 5,397 m. Within this study we present an efficient workflow to address solenogaster diversity, even when confronted with a high degree of singletons and minute body sizes, hampering the use of single individuals for multiple morphological and molecular approaches. We combine analyses of external characters and scleritome with molecular barcoding based on a self-designed solenogaster specific set of mitochondrial primers. Overall we were able to delineate at least 19 solenogaster lineages and identify 15 species to family level and beyond. Based on our approach we identified three key lineages from the two regionally most species-rich families (Acanthomeniidae and Pruvotinidae) for deeper taxonomic investigations and describe the novel abyssal species Amboherpia abyssokurilensis sp. nov. (Cavibelonia, Acanthomeniidae) using microanatomical 3D-reconstructions. Our study more than doubles the previous records of solenogaster species from the Northwest Pacific and its marginal seas. Almost all lineages are reported for the first time from the region of the (Northwest) Pacific, vastly expanding distribution ranges of the respective clades. Moreover it doubles the number of Solenogastres collected from abyssal depths on a global scale and underlines the lack of exploratory α-diversity work in the abyssal zone for reliable species estimates in marine biodiversity.

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Rich and rare—First insights into species diversity and abundance of Antarctic abyssal Gastropoda (Mollusca)

Cited by 36 publications

References 26 publications

Community structure and diversity of polychaetes (Annelida) in the deep Weddell Sea (Southern Ocean) and adjacent basins

Community structure and diversity of polychaetes (Annelida) in the deep Weddell Sea (Southern Ocean) and adjacent basins

Marine Life in the Antarctic

Abyssal Solenogastres (Mollusca, Aplacophora) from the Northwest Pacific: Scratching the Surface of Deep-Sea Diversity Using Integrative Taxonomy

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