搜索结果: 46-60 共查到“海洋科学 Microbial”相关记录61条 . 查询时间(0.046 秒)
Photosynthesis-controlled calcification in a hypersaline microbial mat
Photosynthesis-controlled calcifi cation hypersaline microbial mat
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2014/5/13
We investigated the hypothesis that sulfate reduction rather than oxygenic photosynthesis promotes calcification
in a hypersaline microbial mat by increasing the ion concentration product: ICP ...
Interactions between DOC, microbial processes, and community structure in the mesopelagic zone of the northwestern Sargasso Sea
DOC microbial processes community structure mesopelagic zone the northwestern Sargasso Sea
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2014/5/19
At the Bermuda Atlantic Time-Series Study (BATS) site, the field observations of dissolved organic carbon (DOC) dynamics indicate that seasonally produced ‘‘semilabile’’ DOC is res...
Interactive regulation of dissolved copper toxicity by an estuarine microbial community
Interactive regulation copper toxicity estuarine microbial community
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2014/5/19
Cultured marine microorganisms under copper stress produce extracellular compounds having a high affinity for copper (copper-complexing ligands). These ligands are similar in binding strength to those...
Spring phytoplankton bloom dynamics in Norwegian coastal waters: Microbial community succession and diversity
Spring phytoplankton bloom Norwegian coastal waters
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2014/5/14
Most studies of spring bloom succession in Norwegian waters have employed light microscopy and accounted
for species composition of phyto- and zooplankton. Flow cytometry and molecular tools enable u...
Metabolic and structural response of hyporheic microbial communities to variations in supply of dissolved organic matter
hyporheic microbial communities Metabolic
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2014/5/21
Hyporheic sediment bacterial communities were exposed to dissolved organic matter (DOM) from a variety of
sources to assess the interdependence of bacterial metabolism and community composition. Expe...
Silicate and labile DOC interfere in structuring the microbial food web via algal– bacterial competition for mineral nutrients: Results of a mesocosm experiment
Silicate labile DOC interfere
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2014/5/20
The effects of organic and inorganic nutrient enrichments on algal–bacterial competition were investigated using
mesocosms. Interactions were followed over 10 d in 12, 3-m3
seawater mesocosms in the...
Measurements of phosphate affinity constants and phosphorus release rates from the microbial food web in Villefranche Bay, northwestern Mediterranean
phosphate affinity constants phosphorus release rates microbial food web Villefranche Bay north western Mediterranean
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2014/5/20
Using 32>P, uptake and transfer of phosphorus in the microbial food web were studied in surface water from Villefranche Bay (northwestern Mediterranean) from September to December 2001. During the stu...
Microbial degradation of peptidoglycan in seawater
Microbial degradation peptidoglycan seawater
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2014/5/20
A constituent of the bacterial cell wall, peptidoglycan, has been suggested to be a significant fraction of marine dissolved organic matter, but little is known about its turnover. We measured hydroly...
Airborne hyperspectral detection of microbial mat pigmentation in Rangiroa atoll (French Polynesia)
Airborne hyperspectral detection of microbial mat pigmentation in Rangiroa atoll (French Polynesia)
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2014/5/19
The pigmentation of a cyanobacterial mat located in Rangiroa atoll (French Polynesia) was characterized using low-altitude (500 m) Compact Airborne Spectrometer Imager hyperspectral measurements. Peak...
Coupled dynamics of dimethylsulfoniopropionate and dimethylsulfide cycling and the microbial food web in surface waters of the North Atlantic
Coupled dynamics dimethylsulfoniopropionate dimethyl sulfide cycling the microbial food web surface waters of the North Atlantic
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2014/5/26
Oceanic dimethylsulfide (DMS), the main natural source of sulfur to the global atmosphere, is suggested to play a key role in the interaction between marine biota and climate. Its biochemical precurso...
Kinetics of microbial Fe(III) oxide reduction in freshwater wetland sediments
Kinetics of microbial Fe(III) oxide reduction freshwater wetland sediments
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2014/5/26
The kinetics of microbial amorphous Fe(III) oxide reduction was investigated in sediments from a freshwater wetland in north central Alabama, USA. Fe(III) oxide concentrations decreased exponentially ...
Dissolved organic carbon production by microbial populations in the Atlantic Ocean
Dissolved organic carbon production microbial populations Atlantic Ocean
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2014/6/9
Dissolved organic carbon (DOC) production by microbial populations was measured at 19 stations in the Atlantic Ocean to quantify the fraction of photoassimilated carbon that flows through the dissolve...
Microbial size spectra from natural and nutrient enriched ecosystems
Microbial size spectra natural nutrient enriched ecosystems
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2014/6/9
Microbial size spectra, including bacteria through nanophytoplankton, were measured by use of flow cytometry across the western north Atlantic Ocean and during two nutrient enrichment studies: bottle ...
Massive developments of microbial mats following phytoplankton blooms in a naturally eutrophic bay: Implications for nitrogen cycling
microbial mats phytoplankton blooms naturally eutrophic bay nitrogen cycling
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2014/6/9
Benthic nitrogen processes have received substantial attention because the release of nutrients from sediments can contribute to the requirements of pelagic primary production; their study can also gi...
Fine-scale measurement of diffusivity in a microbial mat with nuclear magnetic resonance imaging
nuclear magnetic resonance imaging Fine-scale measurement
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2014/5/30
Noninvasive
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H–nuclear magnetic resonance (NMR) imaging was used to investigate the diffusive properties of
microbial mats in two dimensions. Pulsed field gradient NMR was used to acquire im...