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Macrofaunal community structure and sulfide flux at gas hydrate deposits from the Cascadia convergent margin, NE Pacific
The rarefaction curves show a decrease in species diversity in the Beggiatoa and Calyptogena communities and the difference in the sulfide environment is a factor influencing the distribution patterns of the chemoautotrophy-dependant and heterotrophic species at the deep-sea sediments containing gas hydrate. Expand
Macrobenthos community structure and trophic relationships within active and inactive Pacific hydrothermal sediments
Hydrothermal fluids passing through sediments create a habitat hypothesized to influence the community structure of infaunal macrobenthos. Here we characterize the density, biomass, speciesExpand
Inorganic carbon uptake in hydrothermal vent tubeworms facilitated by high environmental pC02
It is proposed that elevated pCO2 in the worms' environment is a determinant of internal total CO2 and p CO2, facilitating CO2 transport and diffusion to the symbionts and for other chemoautotrophic symbioses. Expand
Role of thermal conditions in habitat selection by hydrothermal vent gastropods
Thermal conditions are a primary determinant of habitat selection, thereby driving gastropod abundance patterns, and space competition nearest vent flows may result in the displacement of individuals of these species to low quality habitats. Expand
Thermal Preference and Tolerance of Alvinellids
A high-pressure aquarium that mimics in situ thermal gradients and permits P. sulfincola to move within the gradient demonstrated that alvinellids prefer high temperatures and are among the most thermotolerant of marine organisms. Expand
Deep-sea hydrothermal vent animals seek cool fluids in a highly variable thermal environment.
Vent animals were highly responsive to heat and preferred much cooler fluids than their upper thermal limits, whereas invertebrates from other aquatic environments risked exposure to warmer temperatures. Expand
Aerenchyma development and oxygen transport in the estuarine cordgrasses Spartina alterniflora and S. anglica
Spartina alterniflora and Spartina anglica are intertidal cordgrasses that have the capacity to develop extensive aerenchyma systems that may supply submerged portions of the plant with atmospheric oxygen as well as lower metabolic demands, and may function primarily in reducing metabolic oxygen demands. Expand
Ammonium and free amino acid uptake by a deep-sea mussel (Bathymodiolus sp., undescribed) containing methanotrophic bacterial symbionts
Given estimates of rates of carbon fixation and ammonium and FAA levels encountered by the mussels in situ, it is likely that ammonium uptake can meet the nitrogen needs of the association, and that acquisition of carbon and nitrogen from FAA uptake may be an important supplement. Expand
Physiological adaptations of the invasive cordgrass Spartina anglica to reducing sediments: rhizome metabolic gas fluxes and enhanced O2 and H2S transport
Results suggest that tolerance of anoxia and H2S may assist S. anglica in colonizing extensively flooded environments and may be potentially useful for phytoremediation of contaminated sediments, since microbial degradation of organic pollutants is often limited by O2 availability. Expand
Salp-falls in the Tasman Sea: a major food input to deep-sea benthos
Analysis of a long-term trawl survey database determined that salp biomass in the eastern Tasman Sea regularly exceeds 100 t km (-3) yr(-1), with biomasses as high as 734 t km(-3) recorded in a single trawl. Expand