Program and Agenda

Abstract

DIVERSITY OF MICROBIAL HABITATS AND BIOGEOCHEMICAL PROCESSES AT LOIHI SEAMOUNT

Seafloor hydrothermal activity at mid-ocean ridges (MOR) is one of the fundamental processes controlling the exchange of heat and chemical species between seawater and ocean rocks and there is increasing evidence that off-axis vent fields may significantly affect biogeochemical cycles and oceanic elemental budgets. Active hydrothermal venting associated with volcanic seamounts has been well documented, in particular at Loihi Seamount, Hawaii and Vailulu`u Seamount, Samoa, but the degree to which diffuse venting and subsurface processes occur at hot-spot volcanoes is not known. Loihi Seamount offers at least three distinct microbial habitats that support a biogeochemically-significant class of microorganisms – iron oxidizing bacteria. These habitats include sites of warm, iron-rich hydrothermal vents at the volcano’s summit (1,000m depth), sites of cold, ultra-diffuse iron-rich hydrothermal fluids at 5,000m, and bare basalts with no localized active hydrothermal fluids. Here, we provide recent results and future strategies for upcoming field opportunities to further elucidate heat and iron fluxes, microbial oxidation rates, and cryptic anaerobic metabolisms.

ePoster: http://www.soest.hawaii.edu/oceanography/glazer/Brian_T._Glazer/Research.html

Authors

Glazer, B. T., University of Hawaii, USA, glazer@hawaii.edu

Rogers, K., Rensselaer Polytechnic Institute, USA, rogerk5@rpi.edu

Hannides, A., University of Hawaii, USA, hannides@hawaii.edu

Sturm, A., University of Hawaii, asturm25@hawaii.edu

Details

Poster presentation

Session #:164
Date: 2/24/2014
Time: 16:00 - 18:00
Location: Poster/Exhibit Hall

Presentation is given by student: No

PosterID: 483