Role of Calanus sinicus (Copepoda, Calanoida) on Dimethylsulfide and Dimethylsulfoniopropionate Production in Jiaozhou Bay

2019 ◽  
Vol 124 (8) ◽  
pp. 2481-2498 ◽  
Author(s):  
J. Yu ◽  
J.‐Y. Tian ◽  
Z.‐Y. Zhang ◽  
G.‐P. Yang ◽  
H.‐J. Chen ◽  
...  
Keyword(s):  
Jiaozhou Bay ◽  
Calanus Sinicus

scholarly journals Role of <i>Calanus sinicus</i> (Copepoda, Calanoida) on dimethylsulfide production in Jiaozhou Bay

2018 ◽  
Author(s):  
Juan Yu ◽  
Jiyuan Tian ◽  
Zhengyu Zhang ◽  
Guipeng Yang ◽  
Hongju Chen
Keyword(s):  
Jiaozhou Bay ◽  
Laboratory Data ◽  
Isochrysis Galbana ◽  
Calanus Sinicus ◽  
Chaetoceros Curvisetus ◽  
Copepod Grazing ◽  
Food Concentrations ◽  
Algal Diets ◽  
The Relationship

Abstract. The role of copepod Calanus sinicus on the production of dimethylsulfide (DMS)/dimethylsulfoniopropionate (DMSP) in Jiaozhou Bay was evaluated in field and laboratory experiments. Samples at 10 sites in the bay were collected monthly from June 2010 to May 2011 (except for March 2011), and zooplankton species composition was analyzed. The relationship between copepod abundance and DMS or DMSP concentration was investigated. Effects of C. sinicus grazing on DMS/DMSP production at different conditions (i.e., algal diets, food concentrations, and salinities) were assessed in the laboratory. Data from the field experiment showed that C. sinicus was the predominant copepod in Jiaozhou Bay (up to 123 individuals m−3 in May 2011) and has no apparent effect on DMS/DMSP production. In the laboratory experiment, compared with Gymnodinium sp. or Emiliania huxleyi, C. sinicus feeding on Isochrysis galbana and Chaetoceros curvisetus exhibited increased DMS concentration, whereas high salinity inhibited DMS production. This study indicated that DMSP was transferred from phytoplankton to copepod body, fecal pellet, and seawater through copepod grazing. Our results provided important information to understand the biogeochemical cycle of DMSP in Jiaozhou Bay.

Annual Occurrence of Calanus sinicus Carcasses in the Jiaozhou Bay and the Adjacent Waters

2020 ◽  
Vol 19 (5) ◽  
pp. 1163-1168
Author(s):  
Shiwei Wang ◽  
Aiyong Wan ◽  
Guangtao Zhang ◽  
Song Sun
Keyword(s):  
Jiaozhou Bay ◽  
Calanus Sinicus

scholarly journals Role of the Jiaozhou Bay as a source/sink of CO2 over a seasonal cycle

2007 ◽  
Vol 71 (3) ◽  
pp. 441-450 ◽  
Author(s):  
Jinming Song ◽  
Xuegang Li ◽  
Lifeng Niu ◽  
Huamao Yuan ◽  
Ning Li ◽  
...  
Keyword(s):  
Seasonal Cycle ◽  
Jiaozhou Bay ◽  
Source Sink

Research on Effect of Grouting Circle on Seepage Field of Subsea Tunnel

2012 ◽  
Vol 204-208 ◽  
pp. 1409-1412
Author(s):  
You Wang ◽  
Xing Hua Wang ◽  
Jun Ru Chen
Keyword(s):  
Water Pressure ◽  
Jiaozhou Bay ◽  
Water Quantity ◽  
Seepage Field ◽  
Calculation Results ◽  
Free Drainage ◽  
External Water Pressure ◽  
Subsea Tunnel ◽  
External Water

According to a real project of Jiaozhou Bay subsea tunnel, the effect of grouting circle on the seepage field was discussed. The calculation results showed that the principle of "to block mainly, to emit limitedly" should be taken in the waterproofing and drainage of subsea tunnel. If the grouting circle effect was used on the condition of the same effect of water plugging, the thinner the thickness of grouting circle and the smaller permeability coefficient of grouting circle required. The role of grouting circle was that decreasing the gushing water quantity by means of blocking the seepage paths of groundwater, so as to achieve a smaller discharge could significantly reduce the external water pressure of lining. When the tunnel gushing water quantity was equal to the control discharge, it was considered as free drainage and the lining could not bear the water pressure.

Inhibition of Population Growth in the Copepod Calanus sinicus during Diatom Bloom

2011 ◽  
Vol 255-260 ◽  
pp. 2845-2849
Author(s):  
Jie Li ◽  
Yan Juan Liang ◽  
Guo Wei Zhang ◽  
Ze Hao Liu
Keyword(s):  
Production Rate ◽  
Egg Production ◽  
Hatching Success ◽  
Skeletonema Costatum ◽  
Jiaozhou Bay ◽  
Late Winter ◽  
Diatom Bloom ◽  
Calanus Sinicus ◽  
Field Evidence ◽  
Egg Production Rate

Field evidence is presented showing that egg production rate and hatching success in the copepod Calanus sinicus were greatly modified during a major late-winter diatom blooms in the Jiaozhou Bay (Yellow Sea). The diatom species composition in this period had shifted to a dominance of Skeletonema costatum and Thalassiosira sp, and comprised about 65% of phytoplankton population among all six sampling stations. Calanus sinicus were examined to determine the effects of the diatom bloom on reproduction and recruitment. The results of egg production rate and hatching success were significantly decreased with the increase of chlorophyll a concentration, indicating that diatom bloom induced negative effect on the copepods population recruitment.

Role of dactinomycin in the improved survival of children with Wilms' tumor

JAMA ◽  
1966 ◽  
Vol 195 (12) ◽  
pp. 1005-1009 ◽  
Author(s):  
D. J. Fernbach
Keyword(s):  
Wilms Tumor

Role of the allergist in diagnosis and management of patients with uveitis

JAMA ◽  
1966 ◽  
Vol 195 (3) ◽  
pp. 167-172 ◽  
Author(s):  
T. E. Van Metre
Keyword(s):  
Diagnosis And Management

The power of norms to sway fused group members

2018 ◽  
Vol 41 ◽  
Author(s):  
Winnifred R. Louis ◽  
Craig McGarty ◽  
Emma F. Thomas ◽  
Catherine E. Amiot ◽  
Fathali M. Moghaddam
Keyword(s):  
Evolutionary Anthropology ◽  
Normative Systems ◽  
Violent Extremism ◽  
Identity Fusion ◽  
Group Members

AbstractWhitehouse adapts insights from evolutionary anthropology to interpret extreme self-sacrifice through the concept of identity fusion. The model neglects the role of normative systems in shaping behaviors, especially in relation to violent extremism. In peaceful groups, increasing fusion will actually decrease extremism. Groups collectively appraise threats and opportunities, actively debate action options, and rarely choose violence toward self or others.

Elaborating the role of reflection and individual differences in the study of folk-economic beliefs

2018 ◽  
Vol 41 ◽  
Author(s):  
Kevin Arceneaux
Keyword(s):  
Decision Making ◽  
Individual Differences ◽  
Cognitive Processes ◽  
Evolutionary History ◽  
Behavioral Responses ◽  
History Of ◽  
Economic Beliefs

AbstractIntuitions guide decision-making, and looking to the evolutionary history of humans illuminates why some behavioral responses are more intuitive than others. Yet a place remains for cognitive processes to second-guess intuitive responses – that is, to be reflective – and individual differences abound in automatic, intuitive processing as well.

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