scholarly journals Habitat Associations in Gastropod Species at East Pacific Rise Hydrothermal Vents (9°50′N)

2007 ◽  
Vol 212 (3) ◽  
pp. 185-194 ◽  
Author(s):  
Susan W. Mills ◽  
Lauren S. Mullineaux ◽  
Paul A. Tyler
Keyword(s):  
Hydrothermal Vents ◽  
East Pacific Rise ◽  
Habitat Associations ◽  
Gastropod Species ◽  
East Pacific

scholarly journals Role of physico-chemical environment on gastropod assemblages at hydrothermal vents on the East Pacific Rise (13°N/EPR)

2008 ◽  
Vol 88 (5) ◽  
pp. 995-1008 ◽  
Author(s):  
Marjolaine Matabos ◽  
Nadine Le Bris ◽  
Sophie Pendlebury ◽  
Eric Thiébaut
Keyword(s):  
Community Structure ◽  
Reproductive Biology ◽  
Hydrothermal Vents ◽  
East Pacific Rise ◽  
Chemical Environment ◽  
Gastropod Species ◽  
Faunal Assemblages ◽  
East Pacific ◽  
Physico Chemical ◽  
Sulphide Toxicity

Deep-sea hydrothermal vents display extreme and highly variable environmental conditions that are expected to be among the most important factors structuring associated benthic populations and communities. We tested this assumption, focusing on the distribution of gastropods, as well as on the demographic population structure and reproductive biology of one dominant gastropod species in zones characterized by alvinellid polychaetes and vestimentiferan tubeworms. A total of 14 biological samples from both types of habitats were collected at three sites on the East Pacific Rise 13°N vent field in May 2002. At all vents except one, the physico-chemical environment was described in two steps: (1) pH, total sulphide and reduced iron concentrations have been measuredin situinAlvinellahabitats and correlations to temperature were assessed at the scale of each sampled vent; and (2) assuming the consistency of these relationships within a single edifice, ranges of physico-chemical factors were estimated for each biological sample from the corresponding fine scale temperature measurements. A total of 11 gastropod species were identified from all samples and 2 main faunal assemblages were distinguished: one dominated byLepetodrilus elevatusin the alvinellid zone as well as in the vestimentiferan zone, and one dominated by the peltospiridsNodopelta heminoda, N. subnodaandPeltospira operculataconfined to the alvinellid zone. Peltospirid gastropods were dominant over lepetodrilid gastropods in the more acidic, sulphide-richer, and hotter environments. Although this pattern could be related to specific physiological tolerances to temperature and sulphide toxicity, the weak correlation between community structure and physico-chemical variables suggests that additional factors are also involved. Particularly, the low species richness and the overwhelming dominance ofL. elevatusin one faunal assemblage suggest that this species may outcompete peltospirids and greatly affect community structure. This hypothesis is supported by large differences in the demographic structure and reproductive biology ofL. elevatusbetween the 2 faunal assemblages.

Records of species of the hippolytid genus Lebbeus White, 1847 (Crustacea: Decapoda: Caridea) from hydrothermal vents in the Pacific Ocean, with descriptions of three new species

Zootaxa ◽  
2012 ◽  
Vol 3241 (1) ◽  
pp. 35 ◽  
Author(s):  
TOMOYUKI KOMAI ◽  
SHINJI TSUCHIDA ◽  
MICHEL SEGONZAC
Keyword(s):  
New Species ◽  
Pacific Ocean ◽  
Hydrothermal Vents ◽  
Okinawa Trough ◽  
East Pacific Rise ◽  
East Pacific ◽  
The Okinawa Trough ◽  
The Pacific ◽  
The Pacific Ocean ◽  
Three New Species

Five species of the hippolytid shrimp genus Lebbeus White, 1847 are reported from various deep-water hydrothermal ventsites in the Pacific Ocean: L. laurentae Wicksten, 2010 from the East Pacific Rise 13°N; L. wera Ahyong, 2009 from theBrothers Seamount, Kermadec Ridge, New Zealand; L. pacmanus sp. nov. from the Manus Basin, Bismarck Sea; L.shinkaiae sp. nov. from the Okinawa Trough, Japan; and L. thermophilus sp. nov. from the Manus and Lau basins, south-western Pacific. Lebbeus laurentae is fully redescribed because the original and subsequent descriptions are not totallydetailed. Differentiating characters among the three new species and close allies are discussed. Previous records of Lebbeus species from hydrothermal vents are reviewed.

scholarly journals Abiotic synthesis of graphite in hydrothermal vents

2019 ◽  
Vol 10 (1) ◽  
Author(s):  
Emily R. Estes ◽  
Debora Berti ◽  
Nicole R. Coffey ◽  
Michael F. Hochella ◽  
Andrew S. Wozniak ◽  
...  
Keyword(s):  
Organic Carbon ◽  
Hydrothermal Vents ◽  
Direct Evidence ◽  
Settling Velocity ◽  
East Pacific Rise ◽  
Deep Ocean ◽  
Analytical Techniques ◽  
Filtration Method ◽  
East Pacific ◽  
Marine Organic Carbon

AbstractDeciphering the origin, age, and composition of deep marine organic carbon remains a challenge in understanding the dynamics of the marine carbon cycle. In particular, the composition of aged organic carbon and what allows its persistence in the deep ocean and in sediment is unresolved. Here, we observe that both high and low temperature hydrothermal vents at the 9° 50′ N; 104° 17.5 W East Pacific Rise (EPR) vent field are a source for (sub)micron-sized graphite particles. We demonstrate that commonly applied analytical techniques for quantification of organic carbon detect graphite. These analyses thereby classify graphite as either dissolved or particulate organic carbon, depending on the particle size and filtration method, and overlook its relevance as a carbon source to the deep ocean. Settling velocity calculations indicate the potential for these (sub)micron particles to become entrained in the buoyant plume and distributed far from the vent fields. Thus, our observations provide direct evidence for hydrothermal vents acting as a source of old carbon to the deep ocean.

New species of holothurian (Echinodermata: Holothuroidea) from hydrothermal vent habitats

2000 ◽  
Vol 80 (2) ◽  
pp. 321-328 ◽  
Author(s):  
A.V. Smirnov ◽  
A.V. Gebruk ◽  
S.V. Galkin ◽  
T. Shank
Keyword(s):  
New Species ◽  
Hydrothermal Vent ◽  
Hydrothermal Vents ◽  
East Pacific Rise ◽  
The West ◽  
West Pacific ◽  
East Pacific ◽  
The Family ◽  
Hydrothermal Environment ◽  
Deposit Feeding

A new holothurian species Chiridota hydrothermica (Apodida: Chiridotidae) is described, restricted to hydrothermal vent habitats. The new species is known from the west Pacific (Manus and North Fiji Basins) and the South East Pacific Rise, between 17 and 21°S. The unusual large, lobe-like tentacles of this holothurian, uncommon in the family Chiridotidae, could be an adaptation to facilitate shifts between suspension- and deposit-feeding in the hydrothermal environment. A brief review of all known records of holothurians and other echinoderms at hydrothermal vents is given.

How are microbial and detrital sources partitioned among and within gastropods species at East Pacific Rise hydrothermal vents?

2015 ◽  
Vol 36 ◽  
pp. 18-34 ◽  
Author(s):  
Sylvie M. Gaudron ◽  
Lise Marqué ◽  
Eric Thiébaut ◽  
Pascal Riera ◽  
Sébastien Duperron ◽  
...  
Keyword(s):  
Hydrothermal Vents ◽  
East Pacific Rise ◽  
East Pacific

Presence of postlarval alvinocaridid shrimps over south-west Indian Ocean hydrothermal vents, with comparisons of the pelagic biomass at different vent sites

2006 ◽  
Vol 86 (1) ◽  
pp. 125-128 ◽  
Author(s):  
Peter J. Herring
Keyword(s):  
Indian Ocean ◽  
Hydrothermal Vent ◽  
Hydrothermal Vents ◽  
East Pacific Rise ◽  
West Indian ◽  
South West Indian Ocean ◽  
East Pacific ◽  
South West ◽  
Water Fish ◽  
West Indian Ocean

Two types of alvinocaridid shrimp postlarvae were taken at plume depth over the Kairei and Edmond hydrothermal vent fields in the south-west Indian Ocean. These postlarvae were superficially indistinguishable from similar postlarvae taken previously over hydrothermal vents in the Atlantic. The micronekton invertebrate taxa in the water column over the Kairei and Edmond sites were similar to those in the Atlantic. The most frequently taken deep-water fish at Kairei was an unidentified cyemid snipe eel, whereas in the Atlantic its place was taken by Gonostoma bathyphilum and species of the melamphaeid Scopeloberyx. Previous sampling over East Pacific Rise hydrothermal sites at 13°N failed to take any alvinocaridid postlarvae, but the ostracod Gigantocypris agassizi was a major component of the micronekton.

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