scholarly journals Biological and environmental rhythms in (dark) deep-sea hydrothermal ecosystems

2017 ◽  
Vol 14 (12) ◽  
pp. 2955-2977 ◽  
Author(s):  
Daphne Cuvelier ◽  
Pierre Legendre ◽  
Agathe Laës-Huon ◽  
Pierre-Marie Sarradin ◽  
Jozée Sarrazin
Keyword(s):  
Deep Sea ◽  
Environmental Variables ◽  
Hydrothermal Vents ◽  
Community Dynamics ◽  
Time Span ◽  
Northeast Pacific ◽  
Tidal Rhythm ◽  
Hydrothermal Ecosystems ◽  
Main Endeavour ◽  
Northeast Pacific Ocean

Abstract. During 2011, two deep-sea observatories focusing on hydrothermal vent ecology were up and running in the Atlantic (Eiffel Tower, Lucky Strike vent field) and the Northeast Pacific Ocean (NEP) (Grotto, Main Endeavour Field). Both ecological modules recorded imagery and environmental variables jointly for a time span of 23 days (7–30 October 2011) and environmental variables for up to 9 months (October 2011–June 2012). Community dynamics were assessed based on imagery analysis and rhythms in temporal variation for both fauna and environment were revealed. Tidal rhythms were found to be at play in the two settings and were most visible in temperature and tubeworm appearances (at NEP). A  ∼  6 h lag in tidal rhythm occurrence was observed between Pacific and Atlantic hydrothermal vents, which corresponds to the geographical distance and time delay between the two sites.

scholarly journals Biological and environmental rhythms in (dark) deep-sea hydrothermal ecosystems

2016 ◽  
Author(s):  
Daphne Cuvelier ◽  
Pierre Legendre ◽  
Agathe Laes-Huon ◽  
Pierre-Marie Sarradin ◽  
Jozée Sarrazin
Keyword(s):  
Deep Sea ◽  
Environmental Variables ◽  
Hydrothermal Vents ◽  
Community Dynamics ◽  
North East ◽  
The North ◽  
Tidal Rhythm ◽  
Hydrothermal Ecosystems ◽  
Main Endeavour ◽  
East Pacific Ocean

Abstract. During 2011, two deep-sea observatories focusing on hydrothermal vent ecology were up and running in the Atlantic (Eiffel Tower, Lucky Strike vent field) and the North-East Pacific Ocean (NEP) (Grotto, Main Endeavour field). Both ecological modules recorded imagery and environmental variables jointly for a time span of 23 days (7–30 October 2011) and environmental variables for up to 9 months (October 2011 to June 2012). Community dynamics were assessed based on imagery analysis and rhythms in temporal variation for both fauna and environment were revealed. Tidal rhythms were found to be at play in the two settings and were most visible in temperature and tubeworm appearances (at NEP). A 6-hour lag in tidal rhythm occurrence was observed between Pacific and Atlantic hydrothermal vents which corresponds to the geographical distance and time delay between the two sites.

Changes in Deep‐Sea Oxygenation in the Northeast Pacific Ocean During 32–10 ka

2020 ◽  
Vol 47 (11) ◽  
Author(s):  
Ponnusamy Saravanan ◽  
Anil K. Gupta ◽  
Hongbo Zheng ◽  
Santosh K. Rai ◽  
Mruganka K. Panigrahi
Keyword(s):  
Pacific Ocean ◽  
Deep Sea ◽  
Northeast Pacific ◽  
Northeast Pacific Ocean

scholarly journals Draft Genome Sequence of Desulfurobacterium sp. Strain AV08, a Thermophilic Chemolithoautotroph Isolated from a Deep-Sea Hydrothermal Vent

2021 ◽  
Vol 10 (34) ◽  
Author(s):  
Emilie J. Skoog ◽  
Julie A. Huber ◽  
Margrethe H. Serres ◽  
Alice Levesque ◽  
Lisa Zeigler Allen
Keyword(s):  
Pacific Ocean ◽  
Genome Sequence ◽  
Deep Sea ◽  
Hydrothermal Vent ◽  
Draft Genome ◽  
Draft Genome Sequence ◽  
Northeast Pacific ◽  
Axial Seamount ◽  
Northeast Pacific Ocean

A thermophilic chemolithoautotrophic bacterium was isolated from vent fluids at Axial Seamount, an active deep-sea volcano in the northeast Pacific Ocean. We present the draft genome sequence of Desulfurobacterium sp. strain AV08.

Parasitization of a hydrothermal vent limpet (Lepetodrilidae, Vetigastropoda) by a highly modified copepod (Chitonophilidae, Cyclopoida)

Parasitology ◽  
2008 ◽  
Vol 135 (11) ◽  
pp. 1281-1293 ◽  
Author(s):  
V. TUNNICLIFFE ◽  
J. M. ROSE ◽  
A. E. BATES ◽  
N. E. KELLY
Keyword(s):  
Hydrothermal Vent ◽  
Hydrothermal Vents ◽  
Parasite Prevalence ◽  
Mantle Cavity ◽  
Dwarf Male ◽  
Northeast Pacific ◽  
Juan De Fuca ◽  
Competitive Success ◽  
Local Host ◽  
Northeast Pacific Ocean

SUMMARYThe limpet Lepetodrilus fucensis McLean is very abundant at hydrothermal vents on the Juan de Fuca and Explorer Ridges in the northeast Pacific Ocean. This limpet is parasitized by an undescribed chitonophilid copepod throughout the limpet's range. The parasite copepodite enters the mantle cavity and attaches to the afferent branchial vein. The initial invasive stage is a vermiform endosome within the vein that develops an extensive rootlet system causing an enlargement of the afferent branchial vein. Subsequently, an ectosomal female body grows outside the vein to sizes up to 2 mm in width. Once a dwarf male attaches, egg clusters form and nauplii are released. In over 3000 limpets examined from 30 populations, prevalence averaged about 5% with localized infections in female limpets over 25%. After the establishment of limpet populations at new vents, copepod prevalence increased over the succeeding months to 3 years. Host effects were marked and included castration of both sexes and deterioration in gill condition which affected both food acquisition and the gill symbiont. There was a significantly greater parasite prevalence in larger females which likely modifies the reproductive and competitive success of local host populations.

scholarly journals Preparation of Inorganic and Organic Carbon for 14C Analysis from a Single Marine Sample

Radiocarbon ◽  
1997 ◽  
Vol 40 (1) ◽  
pp. 29-34 ◽  
Author(s):  
Sheila Griffin ◽  
Ellen R. M. Druffel
Keyword(s):  
Pacific Ocean ◽  
Organic Carbon ◽  
Deep Sea ◽  
Inorganic Carbon ◽  
Sediment Traps ◽  
Deep Sea Sediment ◽  
Northeast Pacific ◽  
Organic And Inorganic Carbon ◽  
Northeast Pacific Ocean ◽  
Inorganic And Organic

We have developed a technique using a single apparatus to recover the inorganic and organic carbon from a small (few milligrams) aliquot of dried marine material for radiocarbon analysis. The main advantages of using a single apparatus are: 1) less sample is required, 2) decreased handling reduces contamination, and 3) less time and materials are used. Blank values of ∼5 μg and 19–44 μg are obtained for the inorganic and organic carbon extractions, respectively. δ14C results from sinking particulate organic and inorganic carbon are presented for samples collected in deep-sea sediment traps deployed for 10–30 day periods at 650 and 100 m above bottom (mab) in the northeast Pacific Ocean.

Sign in / Sign up

Export Citation Format

Share Document