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Rates of carbonate dissolution in permeable sediments estimated from pore-water profiles: The role of sea grasses
carbonate dissolution permeable sediments estimated pore-water profiles sea grasses
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2014/4/21
In this study we estimate sediment carbonate dissolution rates for sandy sea grass sediments on the Bahamas Bank using an inverse pore-water advection/diffusion/reaction model constrained by field obs...
Production, oxygen respiration rates, and sinking velocity of copepod fecal pellets: Direct measurements of ballasting by opal and calcite
Production oxygen respiration rates sinking velocity copepod fecal pellets Direct measurements ballasting by opal calcite
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2014/4/21
Production, oxygen uptake, and sinking velocity of copepod fecal pelletsegested byTemora longicorniswere measured using a nanoflagellate (Rhodomonassp.), a diatom (Thalassiosira weissflogii), or a coc...
Radon-222 budget in Catalina Harbor, California: 1. Water mixing rates
Radon-222 budget Catalina Harbor California 1. Water mixing rates
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2014/4/21
We describe mixing on the basis of the radon distribution in Catalina Harbor, a small embayment on the southwest side of Catalina Island, California. During June 1998, there was a 2–3-m-thick warm sur...
Diel periodicity in both sei whale vocalization rates and the vertical migration of their copepod prey observed from ocean gliders
Diel periodicity whale vocalization rates
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2014/4/18
The daily activity cycles of marine predators may be dictated in large part by the timing of prey availability.
For example, recent studies have observed diel periodicity in baleen whale vocalization...
Interaction between hydrodynamics and seagrass canopy structure: Spatially explicit effects on ammonium uptake rates
hydrodynamics seagrass canopy structure Spatially explicit effects ammonium uptake rates
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2014/4/18
The hypotheses that (1) different seagrass morphologies may facilitate different nutrient uptake rates under similar hydrodynamic forcing and (2) this effect on nutrient uptake rates is spatially expl...
Seasonal changes in planktonic bacterivory rates under the ice-covered coastal Arctic Ocean
Seasonal changes planktonic bacterivory rates the ice-covered coastal Arctic Ocean
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2014/4/18
Bacterivory was determined in surface waters of Franklin Bay, western Arctic, over a seasonal ice-covered period (winter–spring, 2003–2004). The objectives were to obtain information on the functionin...
Ammonium regeneration and nitrification rates in the oligotrophic Atlantic Ocean: Implications for new production estimates
Ammonium regeneration nitrification rates oligotrophic Atlantic Ocean Implications for new production estimates
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2014/4/18
N regeneration was measured on a transect of the North and South Atlantic, from the United Kingdom to the Falkland Islands, that included extreme oligotrophic conditions. NH4+ and NO{2 oxidation rates...
Rates and regulation of anaerobic ammonium oxidation and denitrification in the Black Sea
Rates and regulation anaerobic ammonium oxidation denitrification Black Sea
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2014/4/18
We performed incubation experiments with 15N-labeled nitrogen compounds to investigate the vertical distribution of pathways of N2 production through the suboxic zone of the central Black Sea and the ...
CO2 control of Trichodesmium N2 fixation, photosynthesis, growth rates, and elemental ratios: Implications for past, present, and future ocean biogeochemistry
CO2 control Trichodesmium N2 fixation photosynthesis growth rates elemental ratios past present future ocean biogeochemistry
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2014/4/22
Diazotrophic marine cyanobacteria in the genus Trichodesmium contribute a large fraction of the new nitrogen entering the oligotrophic oceans, but little is known about how they respond to shifts in g...
Does low temperature constrain the growth rates of heterotrophic protists? Evidence and implications for algal blooms in cold waters
low temperature growth rates of heterotrophic protists Evidence and implications algal blooms cold waters
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2014/4/23
Literature review and synthesis of growth rates of aquatic protists focused on the role of temperature in the formation of massive annual algal blooms in high-latitude ecosystems. Maximal growth rates...
Molecular quantification of differential ingestion and particle trapping rates by the appendicularian Oikopleura dioica as a function of prey size and shape
Molecular quantification of differential ingestion particle trapping rates the appendicularian Oikopleura dioica function of prey size and shape
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2014/4/22
To investigate whether particles are ingested or merely trapped in the house of the appendicularian Oikopleura dioica, we developed a real-time quantitative polymerase chain reaction (qPCR) assay and ...
Spatial and temporal patterns of mineralization rates and oxygen distribution in a permeable intertidal sand flat (Sylt, Germany)
Spatial and temporal rates oxygen distribution
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2014/5/5
Oxygen distribution and benthic mineralization rates were investigated in a permeable intertidal sand flat
(permeability: 3.9 3 10211 m2
) in a transect from the low toward the high waterline. At al...
Prey-specific encounter rates and handling efficiencies as causes of prey selectivity in ambush-feeding hydromedusae
Prey-specific encounter rates handling efficiencies prey selectivity ambush-feeding hydromedusae
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2014/5/4
We examined the foraging process in the jellyfish Sarsia tubulosa feeding on three types of prey: cirripede nauplii, cypris larvae, and Acartia tonsa copepodites. Clearance rate was used as measure of...
Benthic life in the pelagic: Aggregate encounter and degradation rates by pelagic harpacticoid copepods
Benthic life in the pelagic Aggregate encounter degradation rates pelagic harpacticoid copepods
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2014/5/9
We measured field abundances, feeding rates, swimming behavior, and particle colonization of two harpacticoids, the pelagic Microsetella norvegica and the semibenthic , to examine (1) if aggregates ha...
Motility patterns and mate encounter rates in planktonic copepods
Motility patterns mate encounter rates
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2014/5/13
Mate encounter rates in pelagic copepods depend on the characteristics of the mate detection mechanism as well
as on the motility patterns and concentrations of males and females. We describe male an...