Marine Oligochaeta of Jiaozhou Bay, Yellow Sea coast of China

Hydrobiologia ◽  
1990 ◽  
Vol 202 (1-2) ◽  
pp. 107-124 ◽  
Author(s):  
Christer Erséus ◽  
Sun Daoyuan ◽  
Liang Yanling ◽  
Sun Bin
Keyword(s):  
Yellow Sea ◽  
Jiaozhou Bay ◽  
Marine Oligochaeta ◽  
Sea Coast

Seasonal characteristics of microplastics ingested by copepods in Jiaozhou Bay, the Yellow Sea

2021 ◽  
Vol 776 ◽  
pp. 145936
Author(s):  
Shan Zheng ◽  
Yongfang Zhao ◽  
Tao Liu ◽  
Junhua Liang ◽  
Mingliang Zhu ◽  
...  
Keyword(s):  
Yellow Sea ◽  
Jiaozhou Bay ◽  
The Yellow Sea ◽  
Seasonal Characteristics

Semi-enclosed bays serve as hotspots for black carbon burial: A case study in Jiaozhou Bay, western Yellow Sea

2021 ◽  
pp. 149100
Author(s):  
Na Feng ◽  
Weifeng Yang ◽  
Xiufeng Zhao ◽  
Min Chen ◽  
Yusheng Qiu ◽  
...  
Keyword(s):  
Black Carbon ◽  
Yellow Sea ◽  
Jiaozhou Bay ◽  
Carbon Burial ◽  
Western Yellow Sea

Steady increase in water clarity in Jiaozhou Bay in the Yellow Sea from 2000 to 2018: Observations from MODIS

2021 ◽  
Author(s):  
Ziyao Yin ◽  
Junsheng Li ◽  
Jue Huang ◽  
Shenglei Wang ◽  
Fangfang Zhang ◽  
...  
Keyword(s):  
Yellow Sea ◽  
Jiaozhou Bay ◽  
Water Clarity ◽  
The Yellow Sea ◽  
Steady Increase

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>

Planktonic ciliate communities in a semi-enclosed bay of Yellow Sea, northern China: annual cycle

2010 ◽  
Vol 91 (1) ◽  
pp. 97-105 ◽  
Author(s):  
Yong Jiang ◽  
Henglong Xu ◽  
Khaled A.S. Al-Rasheid ◽  
Alan Warren ◽  
Xiaozhong Hu ◽  
...  
Keyword(s):  
Annual Cycle ◽  
Yellow Sea ◽  
Seasonal Pattern ◽  
Jiaozhou Bay ◽  
Temporal Distribution ◽  
Northern China ◽  
Ciliate Abundance ◽  
Ciliate Species ◽  
Enclosed Bay ◽  
Planktonic Ciliate

To reveal the annual patterns of planktonic ciliate communities, planktonic ciliate species composition, abundance and biomass, and responses to environmental conditions, were investigated during an annual cycle in Jiaozhou Bay, Qingdao, northern China. A total of 64 species belonging to five orders (Oligotrichida, Haptorida, Cyrtophorida, Hypotrichida and Tintinnida) were identified, 9 of which were dominant. Ciliate communities presented a clear seasonal pattern in terms of both abundance and biomass. A single peak of ciliate abundance and biomass occurred in late August, mainly due to the oligotrichids, tintinnids and haptorids. The 9 dominant species showed a distinct temporal distribution with seasonal successions of ciliate communities. Multivariate analyses revealed that ciliate abundance was significantly correlated with water temperature, dissolved oxygen and nutrients, especially nitrate nitrogen and soluble reactive phosphate (P < 0.05). These findings provided basic data on annual cycle of planktonic ciliate communities in a semi-enclosed bay of Yellow Sea, northern China.

Delavalia Qingdaoensis Sp. Nov. (Harpacticoida, Miraciidae), a New Copepod Species from Jiaozhou Bay, Yellow Sea

Crustaceana ◽  
2011 ◽  
Vol 84 (9) ◽  
pp. 1085-1097 ◽  
Author(s):  
L. Ma ◽  
X.-Z. Li
Keyword(s):  
New Species ◽  
Yellow Sea ◽  
Jiaozhou Bay ◽  
Harpacticoid Copepod ◽  
Setal Formula ◽  
Shandong Peninsula ◽  
Sediment Samples ◽  
The Family ◽  
Caudal Rami ◽  
A New Species

Abstract Delavalia qingdaoensis, a new species of harpacticoid copepod of the family Miraciidae is described based on specimens sorted from sediment samples collected in Jiaozhou Bay, Qingdao, Shandong Peninsula, Yellow Sea, in May 2008. The new species is easily distinguished from its congeners by the combined characters of the antennulary segments, an apomorphic setal formula of the swimming legs, and the shape of P5 in both sexes. It is remarkably similar to D. bocqueti (Soyer, 1971) and D. latioperculata (Itô, 1981), but it differs from D. bocqueti by features of the caudal rami, antennule, antennary endopod, mandibular exopod, maxillipedal basis, and P5 endopodal lobe; from D. latioperculata by the caudal rami, the inner setae of P1-P4 enp-1, P2 enp-2, and P4 exp-3, and the shape of P5 in both sexes.

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