Seasonal variation in the community and size structure of nano- and microzooplankton in Gyeonggi Bay, Yellow Sea

2008 ◽  
Vol 77 (3) ◽  
pp. 320-330 ◽  
Author(s):  
Eun Jin Yang ◽  
Joong Ki Choi ◽  
Jung-Ho Hyun
Keyword(s):  
Seasonal Variation ◽  
Yellow Sea ◽  
Size Structure

Seasonal Variation of Lipid Profile of Oyster Crassostrea talienwhanensis from the Yellow Sea Area

2020 ◽  
Vol 29 (4) ◽  
pp. 360-372
Author(s):  
Yan-Fei Liu ◽  
Zi-Xuan Wu ◽  
Jing Zhang ◽  
Yu-Xin Liu ◽  
Zhong-Yuan Liu ◽  
...  
Keyword(s):  
Seasonal Variation ◽  
Lipid Profile ◽  
Yellow Sea ◽  
The Yellow Sea ◽  
Sea Area

Seasonal variation of microplastics in seawater and zooplankton in Jiaozhou Bay, the Yellow Sea

2020 ◽  
Author(s):  
Xiaoxia Sun
Keyword(s):  
Seasonal Variation ◽  
Chemical Composition ◽  
Surface Water ◽  
Yellow Sea ◽  
Jiaozhou Bay ◽  
Coastal Areas ◽  
Average Concentration ◽  
The Yellow Sea ◽  
Plastic Pollution ◽  
Four Seasons

<p>Plastic pollution is a globally concerning issue in marine environments. There is currently little research about the seasonal changes in microplastics in coastal areas. Here, we report a seasonal study on the concentrations and characteristics of microplastics in the surface seawater and zooplankton of Jiaozhou Bay, a typical bay in the west Yellow Sea. The concentrations of microplastics in the surface water of Jiaozhou Bay were 0.063, 0.174, 0.094, and 0.050 pieces/m<sup>3 </sup>in February, May, August and November, respectively, with an annual average concentration of 0.095 pieces/m<sup>3</sup>, a low value compared with the plastic concentrations of other coastal areas. The size of the collected microplastics ranged from 346 to 155200 μm, with an average of 5093 μm. The overall percentages of fibers, fragments and plastic foams were 29%, 55% and 16%, respectively. Fragments were the most dominant shape in four seasons. Nine plastic polymers were detected from the surface water of Jiaozhou Bay. The dominant chemical composition was polypropylene (PP), accounting for 51.04% of polymers, followed by polyethylene (PE), accounting for 26.04% of polymers. The seasonal variation of plastic characteristics in Jiaozhou Bay, including the shape, color and chemical composition, was significant. The highest concentration of plastics occurred in May and the lowest concentration of plastics occurred in November. Strong rainfall resulted in an increase in the plastic concentration in May, and winds and eddies affected the spatial distribution of plastics in Jiaozhou Bay. Focused on the dominant zooplankton groups in Jiaozhou Bay, the morphology, color, size, chemical composition and quantity of MPs in zooplankton were investigated in Jiaozhou Bay. The results showed that the MPs in zooplankton of the Jiaozhou Bay were dominated by fibers. The proportions of fiber in February, May, August and November were 91%, 88%, 89% and 88%, respectively. The average size of MPs in zooplankton was 441±2, 468±2, 576±2, and 379±4μm in the four seasons. For the 2 common zooplankton groups in the 4 seasons, the MP/zooplankton was 0.3, 0.26, 0.17, 0.19 for copepod, and 0.22, 0.19, 0.17, 0.45 for chaetognath, respectively.</p>

Mysid Life History and Seasonal Variation in Predation Pressure on Zooplankton

1983 ◽  
Vol 40 (11) ◽  
pp. 1968-1974 ◽  
Author(s):  
Paul A. Murtaugh
Keyword(s):  
Life History ◽  
Seasonal Variation ◽  
Feeding Rate ◽  
Size Structure ◽  
Seasonal Fluctuations ◽  
Predation Intensity ◽  
Lake Washington ◽  
History Of ◽  
Relative Vulnerability

The bivoltine life history of Neomysis mercedis in Lake Washington, Seattle, results in seasonal variation in population size structure that influences the amount and quality of predation suffered by its zooplankton prey. Population densities and size–frequency data for Neomysis are combined with information on the influence of body size on feeding rate and composition of the diet to predict relative predation intensity on five size classes of Daphnia over a 27-mo period. An imperfect relationship between mysid numbers and expected predation intensity and seasonal fluctuations in the relative vulnerability of different-sized prey are two consequences of the mysid's pattern of life history.

Structure en taille des crustacés planctoniques d'un lac dimictique du Bouclier canadien

1988 ◽  
Vol 66 (7) ◽  
pp. 1570-1577
Author(s):  
Lucie Martin ◽  
Bernadette Pinel-Alloul
Keyword(s):  
Seasonal Variation ◽  
Annual Cycle ◽  
Size Structure ◽  
Principal Coordinate Analysis ◽  
Size Spectra ◽  
Fall Season ◽  
Planktonic Crustaceans ◽  
Bouclier Canadien ◽  
Intermediate Linkage ◽  
Chronological Clustering

From May 1981 to July 1982, 28 zooplankton samples were taken from the pelagic zone of Lake Cromwell, Quebec. Seasonal variation in the size structure of the planktonic crustacean community was studied using three different multidimensional analyses: intermediate linkage clustering, principal coordinate analysis, and chronological clustering. The results of these analyses showed the existence of distinct patterns in the size distribution of planktonic crustaceans during the annual cycle. During winter, the community was dominated by intermediate-sized organisms (0.51–0.60 mm), and by a few of larger size (0.96 mm). In springtime, nauplii appeared, and the larger size classes were reduced, giving the size spectra a characteristic shape. Small organisms (0.06–0.22 mm) dominated the population throughout the summer. The fall season was characterized by the opposite observation: small organisms slowly decreased in number while the intermediate classes (0.51–0.60 mm) increased in number to reach their peak in winter. These size–frequency patterns may be related to varying food levels and composition throughout the year.

Phytoplankton biomass size structure and its regulation in the Southern Yellow Sea (China): Seasonal variability

2009 ◽  
Vol 29 (18) ◽  
pp. 2178-2194 ◽  
Author(s):  
Mingzhu Fu ◽  
Zongling Wang ◽  
Yan Li ◽  
Ruixiang Li ◽  
Ping Sun ◽  
...  
Keyword(s):  
Yellow Sea ◽  
Seasonal Variability ◽  
Phytoplankton Biomass ◽  
Size Structure ◽  
Southern Yellow Sea ◽  
The Southern Yellow Sea

Seasonal variation in sediment transport and deposition on a muddy clinoform in the Yellow Sea

2019 ◽  
Vol 179 ◽  
pp. 37-51 ◽  
Author(s):  
Aimei Wang ◽  
David K. Ralston ◽  
Naishuang Bi ◽  
Zhen Cheng ◽  
Xiao Wu ◽  
...  
Keyword(s):  
Seasonal Variation ◽  
Sediment Transport ◽  
Yellow Sea ◽  
The Yellow Sea
Sign in / Sign up

Export Citation Format

Share Document