Published Data Library (PDL)

Benthic macrofauna in Whittard Canyon during JC036

Title

Benthic macrofauna abundance from megacore samples in Whittard Canyon during cruise JC036 during summer 2009.

Author(s) Gunton L. (1); Gooday A.J. (2); Glover A. (3); Bett B.J. (2)

(1) University of Southampton School of Ocean and Earth Science; (2) National Oceanography Centre, Southampton; (3) Natural History Museum, London

Subject biota, oceans
Abstract

Macrofauna and polychaete species abundance data were obtained from replicate megacore samples, collected from three branches inside the Whittard Canyon (N.E. Atlantic) and one site on the adjacent slope to the west of the canyon during cruise JC036 in June and July 2009. Samples were collected using a Megacorer. Four sites were sampled, three in the Whittard Canyon branches (Western, Central and Eastern) and one site on the slope to the west of the canyon. All sites were located at 3500 m depth. The Megacorer was fitted with eight large (100 mm internal diameter) core tubes. Five deployments were conducted in the Western branch, six in the Central and Eastern branches and five at the slope site. One extra deployment was made in the Central and Eastern branches to compensate for the failure to recover sufficient cores. Core slices from the same sediment layer from one deployment were pooled to make one replicate sample. The number of cores pooled per deployment ranged from 3 to 7 and the area of seabed sampled varied accordingly. Samples were fixed with 10 % borax-buffered formalin. In the present study, the top three sediment horizons (i.e. 0–1, 1–3 and 3–5 cm) were analysed in toto. Please see Gunton et al. (2015) (archived with data) for further details. Macrofaunal organisms were extracted from the samples. In the laboratory, macrofauna were transferred from the formalin onto a 300 micro-meter mesh sieve, rinsed with fresh water and sorted in 70 % ethanol. They were identified to higher taxa levels, and polychaetes to species level and counts of species/taxa recorded for each site. AphiaIDs have been assigned to the samples - where identification was only possible to genus or family level, the aphiaIDs for genus and family have been supplied. The supplied aphaIDs are those that were acceptable at the time of the analysis and not their more recent superseding terms. This cruise was part of the HERMIONE project and formed the basis of L. Guntons PhD thesis "Deep-Sea Macrofaunal Biodiversity of the Whittard Canyon (NE Atlantic)"

Temporal coverage 20 June 2009 - 22 July 2009
Spatial coverage Northeast Atlantic Ocean (40W)
File format Delimited
Language English
Discovery metadata record Link to the related European Directory of Marine Environmental Data (EDMED) record
Publisher British Oceanographic Data Centre - Natural Environment Research Council, UK
Publication date 22 March 2016
Digital Object Identifier (DOI) doi:10.5285/2e2e23d6-8958-7907-e053-6c86abc000d9
Short DOI doi:10/bdxj
Citation text Gunton L.; Gooday A.J.; Glover A.; Bett B.J. (2016). Benthic macrofauna abundance from megacore samples in Whittard Canyon during cruise JC036 during summer 2009. British Oceanographic Data Centre - Natural Environment Research Council, UK. doi:10/bdxj.

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