搜索结果: 1-15 共查到“海洋科学 phosphate”相关记录15条 . 查询时间(0.062 秒)
Thalassia testudinum phosphate uptake kinetics at low in situ concentrations using a 33 P radioisotope technique
Thalassia testudinum phosphate uptake situ concentrations
2014/4/23
A new 33
P-tracer technique was used to define low-level phosphate (Pi) uptake kinetics for a dominant tropical
seagrass, Thalassia testudinum. We established seagrass Pi uptake kinetics at hi...
Control of phosphate uptake by zooxanthellae and host cells in the scleractinian coral Stylophora pistillata
Control of phosphate uptake zooxanthellae
2014/4/17
Depletion experiments were used to assess the uptake rates of phosphate by the tropical coral Stylophora
pistillata and its symbiotic zooxanthellae under different conditions. Our results showed the ...
Control of phosphate uptake by zooxanthellae and host cells in the scleractinian coral Stylophora pistillata
Control of phosphate uptake zooxanthellae
2014/4/17
Depletion experiments were used to assess the uptake rates of phosphate by the tropical coral Stylophora
pistillata and its symbiotic zooxanthellae under different conditions. Our results showed the ...
Effects of nitrate and phosphate on grazer-induced toxin production in Alexandrium minutum
nitrate phosphate grazer-induced toxin production Alexandrium minutum
2014/4/21
Two strains ofAlexandrium minutumwere exposed to waterborne cues from copepod grazers in factorial combinations of nitrate and phosphate concentrations to evaluate the importance of grazer-induced par...
A time series investigation of the oxygen isotopic composition of dissolved inorganic phosphate in Monterey Bay, California
oxygen isotopic composition dissolved inorganic phosphate Monterey Bay California
2014/5/5
We present a 2-yr time series of the oxygen isotopic composition of dissolved inorganic phosphate (δ18Op) in Monterey Bay, California. δ18Op can serve as a proxy for phosphate utilization because its ...
On the nonlinear relationship between dissolved cadmium and phosphate in the modern global ocean: Could chronic iron limitation of phytoplankton growth cause the kink?
On the nonlinear relationship dissolved cadmium and phosphate the modern global ocean chronic iron limitation phytoplankton growth
2014/5/4
I report two vertical profiles of dissolved cadmium (Cd) and phosphate (PO4) from the Bering Sea: one from a high-nutrient, low-chlorophyll (HNLC) area, in which phytoplankton growth is limited by iro...
The biological and biogeochemical consequences of phosphate scavenging onto phytoplankton cell surfaces
The biological and biogeochemical consequences phosphate scavenging phytoplankton cell surfaces
2014/5/13
Phytoplankton carbon (C) and nitrogen (N) content is commonly normalized to phosphorus (P) quotas as Redfield C:N: P ratios. We examined how surface-bound P pools affect Redfield stoichiometry and P u...
Nitrate : phosphate ratios and Emiliania huxleyi blooms
Nitrate phosphate ratios Emiliania huxleyi blooms
2014/5/9
It has been hypothesized that phosphate limitation, classically indicated by NO3 : PO4 ratios >16, is one of the critical factors allowing the coccolithophorid Emiliania huxleyi to bloom. This hypothe...
Dynamics of community structure and phosphate status of picocyanobacterial populations in the Gulf of Aqaba, Red Sea
community structure phosphate status picocyanobacteria populations Gulf of Aqaba Red Sea
2014/5/8
We monitored the genetic diversity and phosphate (P) status of Prochlorococcus and Synechococcus populations during an annual cycle (1999-2000) in the Gulf of Aqaba, Red Sea, using DNA probes and anti...
Growth rates, half saturation constants, and silicate, nitrate, and phosphate depletion in relation to iron availability of four large open-ocean diatoms from the Southern Ocean
Growth rates half saturation constants silicate, nitrate phosphate depletion relation to iron availability four large open-ocean diatoms Southern Ocean
2014/5/19
Four large, open-ocean diatoms from the Southern Ocean (Actinocyclus sp., Thalassiosira sp., Fragilariopsis kerguelensis, and Corethron pennatum) were grown in natural (low iron) Southern ocean seawat...
Responses of elemental and biochemical composition of Chaetoceros muelleri to growth under varying light and nitrate:phosphate supply ratios and their influence on critical N : P
Responses of elemental biochemical composition Chaetoceros muelleri growth under varying light nitrate:phosphate supply ratios their influence critical N : P
2014/5/19
The critical nitrogen-to-phosphorous ratio (N:P) defines the transition between N and P limitation of growth rate and is not a biological constant. To test the effect of environmental conditions on th...
Influence of CO2, nitrate, phosphate, and silicate limitation on intracellular dimethylsulfoniopropionate in batch cultures of the coastal diatom Thalassiosira pseudonana
CO2 nitrate phosphate silicate limitation intracellular dimethylsulfoniopropionate diatom Thalassiosira pseudonana
2014/5/22
We measured intracellular dimethyl sulfoniopropionate (DMSP) concentrations in nutrient-limited batch cultures of the coastal diatom Thalassiosira pseudonana. Under N, P, CO2, and Si growth limitation...
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
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...
Saharan input of phosphate to the oligotrophic water of the open western Mediterranean Sea
Saharan input of phosphate oligotrophic water open western Mediterranean Sea
2014/5/27
A Saharan soil, considered as a proxy for Saharan aerosols, was used to perform a series of dissolution experiments: various amounts of Saharan soil were exposed to ultrapure water and seawater for va...
Does competition for nanomolar phosphate supply explain the predominance of the cyanobacterium Synechococcus?
nanomolar phosphate predominance cyanobacterium Synechococcus
2014/5/26
Experimental work during a cruise along a W-E transect in the Mediterranean Sea suggests that (1) orthophosphate concentrations in the upper photic zone show a decreasing trend from the west to the ea...