搜索结果: 1-15 共查到“海洋科学 concentration”相关记录21条 . 查询时间(0.187 秒)
Dissolved carbon dioxide concentration controls baseline stable carbon isotope signatures of a lake food web
Dissolved carbon dioxide concentration controls baseline stable carbon isotope signatures a lake food web
2014/4/4
Temporal variation in the baseline stable carbon isotope (δ13C) value of a well-studied, productive lake was examined over a 26-yr period using archived samples of the herbivorous zooplankter Daphnia ...
Dissolved carbon dioxide concentration controls baseline stable carbon isotope signatures of a lake food web
Dissolved carbon dioxide concentration controls baseline stable carbon isotope signatures a lake food web
2014/4/3
Temporal variation in the baseline stable carbon isotope (d13C) value of a well-studied, productive lake was examined over a 26-yr period using archived samples of the herbivorous zooplankterDaphnia g...
Hemoglobin concentration in Daphnia (D. galeata-hyalina) from the epilimnion is related to the state of nutrition and the degree of protein homeostasis
Daphnia protein homeostasis
2014/4/16
The function of hemoglobin (Hb), which is a key protein of many species, was analyzed in Daphnia from the
field. Temperature and oxygen content; abundance and composition of phytoplankton; and abunda...
Measurement method of the concentration of matter using optical property of seawater in visible wavelength range
concentration of matter optical property seawater visible wavelength range
2009/4/8
It is known that ocean color depends on contained materials in seawater. It is possible to use it for detecting significant information of sea. Since the reflection and absorbance of light can be ex...
On the Influence of Pacific Ocean Temperatures on Atmospheric Carbon Dioxide Concentration at Ocean Weather Station P
sea surface temperatures atmospheric C02 Ocean Weather Station P
2009/2/10
The study presents an analysis of atmospheric CO2 measurements at Ocean Weather Station P (50°N, 145°W) and sea surface temperatures over the North Pacific for the period 1974–78. The results show tha...
The Formation of Labrador Sea Water. Part III：The Evolution of Oxygen and Nutrient Concentration
Labrador Sea Water Oxygen Concentration Nutrient Concentration
2009/1/5
Oxygen, nutrient, and tritium concentrations observed in the western Labrador Sea in March 1976 during deep convective renewal of Labrador Sea water are analyzed to show how a newly formed water mass ...
The interactive effects of calcium concentration and temperature on the survival and reproduction ofDaphnia pulexat high and low food concentrations
calcium concentration temperature on the survival Daphnia pul exat high low food concentrations
2014/4/21
We rearedDaphnia pulexin a fully defined medium at seven calcium (Ca) concentrations (0.1, 0.5, 1, 1.5, 2, 5, and 10 mg Ca L21), two mixed algal densities (high food: 30mg chlorophyllaL21 and low food...
In situ mussel feeding behavior in relation to multiple environmental factors: Regulation through food concentration and tidal conditions
mussel feeding behavior multiple environmental factors
2014/4/22
Feeding behavior of mussels (Mytilus edulis) was measured in situ using a video camera and expressed as the
mean percentage of valve gape aperture (VA), concomitant with environmental and biological ...
The effect of seawater CO2 concentration on growth of a natural phytoplankton assemblage in a controlled mesocosm experiment
seawater CO2 concentration natural phytoplankton assemblage controlled mesocosm experiment
2014/5/4
We examine the effects of seawater pCO2 concentration of 25, 41, and 76 kPa (250, 400, and 750 matm) on the growth rate of a natural assemblage of mixed phytoplankton obtained from a carefully control...
Testing the effect of CO2 concentration on the dynamics of marine heterotrophic bacterioplankton
CO2 concentration marine heterotrophic bacterioplankton
2014/4/23
To date no study exists that directly addresses changes in dynamics of heterotrophic bacteria in surface waters
in relation to partial pressure of CO2
(pCO2
). Therefore, we studied the effect of c...
Seasonal and spatial variation in the organic carbon and nitrogen concentration and their stable isotopic composition in Zostera marina (Denmark)
Seasonal and spatial variation organic carbon nitrogen concentration their stable isotopic composition Zostera marina
2014/5/9
The spatial and seasonal variation in the concentration and stable isotopic composition of carbon and nitrogen was studied in Zostera marina (eelgrass) meadows in Roskilde Fjord and Øresund, Denm...
The effect of growth rate, phosphorus concentration, and temperature on N2 fixation, carbon fixation, and nitrogen release in continuous cultures of Trichodesmium IMS101
growth rate phosphorus concentration temperature on N2 fixation carbon fixation nitrogen release continuous cultures Trichodesmium IMS101
2014/5/9
With the use of continuous culture systems, rates of dinitrogen (N2) and carbon (C) fixation and nitrogen (N)- and C-based doubling times were assessed in Trichodesmium IMS101 growing exponentially at...
Testing the direct effect of CO2 concentration on a bloom of the coccolithophorid Emiliania huxleyi in mesocosm experiments
CO2 concentration coccolithophore Emiliania huxleyi mesocosm experiments
2014/5/9
We studied the direct effects of CO2 and related changes in seawater carbonate chemistry on marine planktonic organisms in a mesocosm experiment. In nine outdoor enclosures (~11 m3 each), the partial ...
Transmission of oxygen concentration fluctuations through the diffusive boundary layer overlying aquatic sediments
oxygen concentration fluctuations diffusive boundary layer aquatic sediments
2014/5/14
Even though the O2 concentration in the diffusive boundary layer overlying natural aquatic sediments usually varies over time, microprofiles with little or no error bars are abundant in the literature...
Light scattering properties of marine particles in coastal and open ocean waters as related to the particle mass concentration
Light scattering properties marine particles coastal and open ocean waters particle mass concentration
2014/5/20
Variations in the spectral scattering coefficient of marine particles [bp(λ)] were measured at 241 locations in oceanic (case 1) and coastal (case 2) waters around Europe. The scattering coefficient a...