The NIWA seamount sled: An effective epibenthic sledge for sampling epifauna on seamounts and rough seafloor

2016 ◽  
Vol 108 ◽  
pp. 32-38 ◽  
Author(s):  
Malcolm R. Clark ◽  
Rob Stewart
Keyword(s):  
Epibenthic Sledge

Crinoidea and Holothuroidea (Echinodermata) of the abyssal Angola Basin—Results of the DIVA-1 expedition of FS "Meteor" (Cruise M48/1)

Zootaxa ◽  
2006 ◽  
Vol 1276 (1) ◽  
pp. 1 ◽  
Author(s):  
JENS MICHAEL BOHN
Keyword(s):  
Atlantic Ocean ◽  
Rich Variety ◽  
South Eastern ◽  
Epibenthic Sledge ◽  
Eastern Atlantic Ocean ◽  
Agassiz Trawl

Agassiz trawl and epibenthic sledge samples taken at abyssal depths in the Angola Basin (south-eastern Atlantic Ocean) during the expedition DIVA-1 with FS "Meteor" in July 2000 yielded a rich variety of Echinodermata: inter alia one stalked crinoid (Bathycrinus cf. aldrichianus Wyville Thomson, 1876) and altogether nine holothurian species, two of which are subspecies. One of these, Achlyonice longicornis spec. nov., is new to science, while all others have been described earlier: Deima validum validum Théel, 1879, Psychropotes semperiana Théel, 1882, Peniagone purpurea (Théel, 1882), Molpadiodemas atlanticus (R. Perrier, 1898), Molpadia liska Pawson, 1977, Protankyra brychia (Verrill, 1885), Siniotrochus myriodontus Gage & Billett, 1986 and Neolepidotrochus parvidiscus angolensis Bohn, 2005. All species collected are described and their known distributions are given. Finally, two crinoids and 21 holothurian species, so far known from the abyssal Angola Basin, are listed and their zoogeographical relationships are discussed.

Antennuloniscus alfi n. sp. (Crustacea: Isopoda: Haploniscidae) from the Scotia Sea, Antarctica

Zootaxa ◽  
2006 ◽  
Vol 1130 (1) ◽  
pp. 43
Author(s):  
LAURA WÜRZBERG ◽  
WIEBKE BRÖKELAND
Keyword(s):  
Southern Ocean ◽  
Deep Sea ◽  
Scotia Sea ◽  
Epibenthic Sledge

Antennuloniscus alfi n. sp. is reported from samples obtained with an epibenthic sledge in the deep sea of the Southern Ocean. The species can be recognised by its trapezoidal head, the broad and short articles 5 and 6 of the antenna and the pleotelson, which has rounded margins and two dorsal cuticular tubercles.

scholarly journals A new genus and two new species of saccamminid foraminiferans (Protista, Rhizaria) from the deep Southern Ocean

Zootaxa ◽  
2009 ◽  
Vol 2096 (1) ◽  
pp. 9-22 ◽  
Author(s):  
TOMAS CEDHAGEN ◽  
ANDREW J. GOODAY ◽  
JAN PAWLOWSKI
Keyword(s):  
New Species ◽  
Southern Ocean ◽  
New Genus ◽  
Species Group ◽  
Weddell Sea ◽  
Rrna Gene ◽  
Antarctic Species ◽  
Epibenthic Sledge ◽  
Two New Species ◽  
Gene Data

We describe two new species of spherical single-chambered ('saccamminid') foraminifera from the bathyal and abyssal Weddell Sea (Southern Ocean), collected in epibenthic sledge and Agassiz trawl samples obtained during the 2005 ANDEEP III campaign. Both are assigned to Leptammina gen. nov. The new genus is similar in overall test morphology to Saccammina Carpenter, 1869; it is distinguished mainly by its test wall, which is delicate, flexible and composed of fine mineral grains, rather than being rigid and coarsely agglutinated. In Leptammina grisea gen. et sp. nov., the test wall is relatively thick, grayish with a violet tinge and a dull surface; the cytoplasm is dark greenish. In Leptammina flavofusca gen. et sp. nov., the test is yellowish brown, with a very finely, almost transluscent agglutinated wall; the cytoplasm is pale yellowish. Both species have prominent circular apertures. Maximum likelihood phylogenetic analysis of SSU rRNA gene data showed that both species group together with an undescribed shallow-water Antarctic species (“silver saccamminid”) in a very strongly supported clade (100 %). Leptammina grisea gen. et sp. nov. is a relatively uncommon species (29 specimens from 3 stations), found at 1580–4822 m depth in the central and north–western Weddell Sea; Leptammina flavofusca gen. et sp. nov. is common (398 specimens from 4 stations) at depths of 3138–4795 m in the central Weddell Sea and off Kapp Norvegia. Both species are presently known only from ANDEEP III samples.

Bryozoa from detritic bottoms in the Menorca Channel (Balearic Islands, western Mediterranean), with notes on the genus Cribellopora

Zootaxa ◽  
2010 ◽  
Vol 2536 (1) ◽  
pp. 36 ◽  
Author(s):  
JAVIER SOUTO ◽  
OSCAR REVERTER-GIL ◽  
EUGENIO FERNÁNDEZ-PULPEIRO
Keyword(s):  
New Species ◽  
New Genus ◽  
Western Mediterranean ◽  
Balearic Islands ◽  
Junior Synonym ◽  
Epibenthic Sledge ◽  
A New Species

Samples of Bryozoa were collected during an epibenthic sledge survey (Canal0209) of the Menorca Channel between Menorca and Mallorca in the Balearic Islands in 2009. Twenty-nine species were identified, including a new genus of Calloporidae (Barrosia) and a new species of Fenestrulina, described herein. A lectotype is designated for Coronellina fagei (Calescharidae). Cribellopora simplex, a species of Lacernidae generally considered to be a junior synonym of Cribellopora trichotoma, is redescribed on the basis of the holotype and newly collected material.

Distribution of Epibenthic Mollusca on a Transect Through the Beagle Channel (Southern Chile)

1998 ◽  
Vol 78 (3) ◽  
pp. 875-889 ◽  
Author(s):  
Katrin Linse ◽  
Angelika Brandt
Keyword(s):  
Boundary Layer ◽  
Species Richness ◽  
Shallow Water ◽  
Benthic Boundary Layer ◽  
Southern Chile ◽  
Beagle Channel ◽  
Epibenthic Sledge ◽  
Molluscan Species

During the Joint Chilean–German–Italian Magellan ‘Victor Hensen’ Campaign in 1994 an epibenthic sledge (EBS) was used to catch the epibenthic and benthic-boundary-layer macrofauna.Eighteen EBS samples were taken at 12 locations on a transect through the Beagle Channel. The aims of the study were to describe the epibenthic molluscan species, to quantify their abundances and to describe their distribution. In total 35,087 specimens were collected, yielding 107,223 ind 1000 nr−2. Bivalvia were most abundant 78,615 individuals (52 spp.) followed by Gastropoda (17,289, 52spp.), Aplacophora (4745, 9 spp.), Polyplacophora (4665) and Scaphopoda (1909,5 spp.). The molluscan abundance of the hauls were strikingly different, between 3 and 37,927 ind 1000 m−2 haul. Only stations off the eastern entrance showed high abundances, which was represented at all depths and sediments. Elsewhere the abundances were low. Species richness was highest in shallow water (< 100 m) with 69 species and decreased with depth. But at the deepest station 37 species were found.

Six new species of Macellicephala (Annelida: Polynoidae) from the Southern Ocean and south Atlantic with re-description of type species

Zootaxa ◽  
2018 ◽  
Vol 4455 (1) ◽  
pp. 1
Author(s):  
LENKA NEAL ◽  
MADELEINE J. BRASIER ◽  
HELENA WIKLUND
Keyword(s):  
New Species ◽  
Southern Ocean ◽  
Deep Sea ◽  
Strong Support ◽  
Amundsen Sea ◽  
Modern Material ◽  
Scotia Sea ◽  
Epibenthic Sledge ◽  
The Family ◽  
Taxonomic Novelty

Increased sampling efforts in unexplored regions of the Southern Ocean (including depths >500 m) combined with the use of an epibenthic sledge resulted in a large collection of mobile, scale-bearing worms from the family Polynoidae Kinberg, 1856. The greatest taxonomic novelty was found in the genus Macellicephala McIntosh, 1885, the type genus of the exclusively deep-sea polynoid sub-family Macellicephalinae Hartmann-Schröder, 1971. Recently collected material from the Amundsen Sea led to discovery of four new species based on morphology and COI, 16S and 18S genes—Macellicephala gloveri sp. nov., M. linseae sp. nov., M. patersoni sp. nov. and M. brenesorum sp. nov. The holotype of type taxon Macellicephala mirabilis McIntosh, 1885 as well as historic material of Macellicephala collected from the Southern Ocean enabled comparison with the modern material. As a result, Macellicephala mirabilis is re-defined, and two new species, M. monroi sp. nov. and M. macintoshi sp. nov., are erected from the historic material previously ascribed to M. mirabilis. Additionally, DNA-suitable specimens assigned to M. monroi sp. nov. were collected from the Scotia Sea. Genetic data enabled the first test of the monophyly of Macellicephala. Based on current taxa coverage, these taxa form a well-supported monophyletic group as recovered by Bayesian and Maximum Likelihood analyses of our combined genetic dataset. In addition, the analysis shows strong support of a clade comprising Macellicephala and other exclusively deep-sea groups (including cave-dwelling taxa).

Tanaidacea of the Amundsen and Scotia seas: an unexplored diversity

2014 ◽  
Vol 27 (1) ◽  
pp. 19-30 ◽  
Author(s):  
Krzysztof Pabis ◽  
Magdalena Błażewicz-Paszkowycz ◽  
Piotr Jóźwiak ◽  
David K.A. Barnes
Keyword(s):  
Southern Ocean ◽  
Benthic Fauna ◽  
Site Specificity ◽  
West Antarctica ◽  
Amundsen Sea ◽  
Scotia Sea ◽  
Epibenthic Sledge ◽  
The World ◽  
Scotia Arc ◽  
Study Sites

AbstractThe Scotia Arc and Amundsen Sea are contrasting regions within West Antarctica. The Scotia Sea shelf is well studied and central to the origin and diversity of the Southern Ocean benthic fauna, whilst the shelf of Amundsen Sea is one of the least studied shelf areas in the world; a ‘white spot’ on the map of benthic research. Here we report on the tanaidaceans collected using an epibenthic sledge on two expeditions, BIOPEARL 1 and 2, of the RRSJames Clark Rossin 2006 and 2008, respectively. This study represents the first analysis of the tanaidacean fauna of those two basins. Thirty-seven species were found in the Amundsen Sea from 500–1500 m depth and 51 species were found at depths ranging from 200–1600 m in the Scotia Sea. In the Scotia Sea, many species were unique to each of the study sites which may be evidence of allopatric speciation episodes. Site specificity was especially evident forTyphlotanaisandPseudotanais. Only three species were common to both basins. Around 90% of the species were previously undescribed. Our findings increase the number of the tanaidaceans known in the Southern Ocean by 50%.

The tanaidacean fauna of the Beagle Channel (southern Chile) and its relationship to the fauna of the Antarctic continental shelf

2001 ◽  
Vol 13 (4) ◽  
pp. 420-429 ◽  
Author(s):  
Anja Schmidt ◽  
Angelika Brandt
Keyword(s):  
Adjacent Area ◽  
Systematic Account ◽  
Bathymetric Range ◽  
Beagle Channel ◽  
Epibenthic Sledge ◽  
Magellan Strait ◽  
Antarctic Continental Shelf ◽  
Magellan Region ◽  
The Antarctic ◽  
First Time

In November 1994 epibenthic sledge samples were taken in the Beagle Channel. This study presents the first systematic account of Tanaidacea of the Beagle Channel and an adjacent area on the Atlantic continental slope. The material of this part from the Magellan Strait comprised 2175 specimens and 27 species of eight families of Tanaidomorpha and two families of Apseudomorpha. Eleven species were sampled in the Magellan region for the first time. The genus Stenotanais (Anarthruridae) was reported for the first time in the Southern Hemisphere and, the bathymetric range of seven species was extended. The tanaidacean fauna in the Beagle Channel is highly heterogeneous with 36 tanaidacean species now known from the Magellan region. On the basis of a zoogeographic comparison of the Magellan region with sub-Antarctica and Antarctica, Sieg's (1988) hypothesis of a phylogenetically young, derived Antarctic tanaidacean fauna is examined and the zoogeographic relationship between the Magellanic Tanaidacea and the Antarctic tanaidaceans is discussed.

An acoustically monitored opening and closing epibenthic sledge

1976 ◽  
Vol 23 (2) ◽  
pp. 167-IN6 ◽  
Author(s):  
R.G. Aldred ◽  
M.H. Thurston ◽  
A.L. Rice ◽  
D.R. Morley
Keyword(s):  
Epibenthic Sledge ◽  
Opening And Closing
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