Congruency analysis to determine potential surrogates of littoral macroinvertebrate communities: a case study in intertidal ecosystems of northern Yellow Sea

2012 ◽  
Vol 93 (3) ◽  
pp. 601-609
Author(s):  
Guangjian Xu ◽  
Yulian Li ◽  
Chongbo He ◽  
Henglong Xu
Keyword(s):  
Yellow Sea ◽  
Northern China ◽  
The Yellow Sea ◽  
Biological Conservation ◽  
Sufficient Information ◽  
Macroinvertebrate Communities ◽  
Genus Level ◽  
Ecological Patterns ◽  
Northern Yellow Sea ◽  
Mollusc Assemblages

To determine potential surrogates of littoral macroinvertebrate communities for marine bioassessment and for evaluating biological conservation, the different taxonomic resolutions as surrogates were studied based on six datasets collected from intertidal zones of the Yellow Sea, near Qingdao, northern China, during the period of 1989–1998. Samples were collected yearly at five stations with different bottom types during the summer season (June). The genus- and family-level resolutions maintained sufficient information to analyse the ecological patterns of the macroinvertebrate communities for assessing ecological quality status in littoral ecosystems. The mollusc assemblages, alone or in combination with arthropod assemblages, may be used as a surrogate of littoral macroinvertebrate communities, at both species- and genus-level resolutions. The results suggest that the use of simplifications in macroinvertebrate fauna at genus-level resolutions or using smaller taxonomic assemblages (e.g. molluscs and arthropods) are time-efficient and would allow improving sampling strategies of large spatial/temporal scale bioassessment programmes and biological conservation researches in littoral ecosystems.

New species of Thoonchus (Enoplida, Enchelidiidae) from the Yellow Sea and redescription of T. giganticus Belogurova et al., 1986

Zootaxa ◽  
2020 ◽  
Vol 4845 (2) ◽  
pp. 239-252
Author(s):  
JULIA K. ZOGRAF ◽  
OLGA N. PAVLYUK ◽  
YULIA A. TREBUKHOVA ◽  
LI BAOQUAN
Keyword(s):  
New Species ◽  
Excretory Pore ◽  
Yellow Sea ◽  
Buccal Cavity ◽  
Critical Evaluation ◽  
The Body ◽  
The Yellow Sea ◽  
Valid Species ◽  
Proximal Extension ◽  
Northern Yellow Sea

The family Enchelidiidae is recovered as monophyletic and appears to be a more recently derived taxon within the superfamily Oncholaimoidea. It combines nematodes with buccal cavity with three unequal teeth, crenate pharynx, and absence of demanian system. Genus Thoonchus was erected for nematodes characterized by the large buccal cavity with heavily cuticularized walls and several rows of denticles, short and arcuate spicules and gubernaculums with expanded corpus. One new species is described here from the Sishili Bay, located in the northern Yellow Sea. Thoonchus covidus sp. nov. is characterized by the body length 3195‒4339 µm, outer labial and cephalic setae in one circle, pocket shaped amphid above the buccal cavity base, secretory-excretory pore at the base of cephalic setae, arched spicules, gubernaculum with thin proximal extension parallel to spicules, preanal supplement absent, three pairs of preanal papillae. It differs from other congeners by the position of secretory-excretory pore, absence of supplementary organ in males and presence of three pairs of precloacal papillae. Redescription of T. giganticus is also provided. After critical evaluation of the genus we recognize 4 valid species and provide a taxonomic key to species. 

Vertical dynamics in community functioning of biofilm-dwelling ciliates during the colonisation process in coastal waters of the Yellow Sea

2019 ◽  
Vol 70 (11) ◽  
pp. 1611 ◽  
Author(s):  
Xiaoyun Bai ◽  
Congcong Guo ◽  
Mamun Abdullah Al ◽  
Alan Warren ◽  
Henglong Xu
Keyword(s):  
Functional Diversity ◽  
Functional Traits ◽  
Coastal Waters ◽  
Yellow Sea ◽  
Northern China ◽  
Diversity Indices ◽  
Functional Trait ◽  
The Yellow Sea ◽  
Biological Traits ◽  
Trait Distribution

Multifunctional trait analysis is increasingly recognised as an effective tool for assessing ecosystem function and environmental quality. Here, a baseline study was performed at four depths (i.e. 1, 2, 3.5 and 5m) in Yellow Sea coastal waters of northern China in order to determine the optimal depth for bioassessment using biological traits of biofilm-dwelling ciliates. Community-weighted means (CWM) from functional traits system were used to summarise the trait distribution and functional diversity of ciliates among the four depths during a 1-month colonisation period. Functional trait distribution revealed a clear temporal variation among the four depths. In total, 3 of 17 functional traits (i.e. feeding type, body size and flexibility) showed significant temporal patterns. Bootstrapped averaging and permutational multivariate analysis of variance (PERMANOVA) tests demonstrated that the colonisation pattern of biofilm-dwelling ciliates as expressed by CWM at 1 and 2m differed significantly from those at 3.5 and 5m. Functional diversity indices showed lower variability at 1 and 2m than at 3.5 and 5m. These results suggest that 1 and 2m are the preferred sampling depths for bioassessment of marine water quality using biological traits of biofilm-dwelling ciliates.

Trophic-functional patterns of biofilm-dwelling ciliates at different water depths in coastal waters of the Yellow Sea, northern China

2018 ◽  
Vol 63 ◽  
pp. 34-43 ◽  
Author(s):  
Mamun Abdullah Al ◽  
Yangyang Gao ◽  
Guangjian Xu ◽  
Zheng Wang ◽  
Alan Warren ◽  
...  
Keyword(s):  
Coastal Waters ◽  
Yellow Sea ◽  
Northern China ◽  
The Yellow Sea ◽  
Functional Patterns ◽  
Water Depths

The Neolithic Age in Northern China

Antiquity ◽  
1933 ◽  
Vol 7 (28) ◽  
pp. 389-404 ◽  
Author(s):  
Carl Whiting Bishop
Keyword(s):  
Eastern Europe ◽  
Yellow Sea ◽  
Northern China ◽  
The Yellow Sea ◽  
Eastern Asia ◽  
The West ◽  
The North ◽  
Neolithic Age ◽  
Western Asia ◽  
The Neolithic Age

Northern China forms an integral part of the north temperate zone of the Old World. It is, moreover, connected with western Asia and eastern Europe by a long but continuous belt of steppe presenting no transverse barriers to migration, whether faunal or human. It cannot, therefore, be treated as a region apart, save in a very limited and subordinate sense.The surface consists in the main of mountains in the west and of plains in the east. Over much of it lie thick deposits of loess, extending from Chinese Turkistan right across eastern Asia, nearly to the Yellow Sea. These great accumulations of wind-borne soil were most probably formed during times roughly contemporary with the Riss-Wurm glaciation of Europe.

Seasonal shift in community pattern of periphytic ciliates and its environmental drivers in coastal waters of the Yellow Sea, northern China

2014 ◽  
Vol 95 (2) ◽  
pp. 277-288 ◽  
Author(s):  
Wei Zhang ◽  
Henglong Xu
Keyword(s):  
Seasonal Variation ◽  
Coastal Waters ◽  
Yellow Sea ◽  
Winter Season ◽  
Northern China ◽  
The Yellow Sea ◽  
Environmental Drivers ◽  
Species Number ◽  
Community Structures ◽  
Ciliate Species

Ciliates are a primary component of the periphyton microfauna and play a crucial role in the functioning of microbial food webs. Seasonal variation in community structures of periphytic ciliate communities was studied, using glass slides as an artificial substratum, during a 1-year cycle (August 2011–July 2012) in coastal waters of the Yellow Sea, northern China. Samples were collected monthly at a depth of 1 m from four sampling stations. A total of 144 ciliate species representing 78 genera, 43 families, 17 orders and eight classes were recorded. Among these species, 31 distributed in all four seasons, while 11, 11, 13 and two forms occurred only in spring, summer, autumn and winter season, respectively. The species number and total abundance peaked in spring and autumn, with minimum values in winter. Ciliate community structures differed significantly between seasons, and were significantly correlated with the changes in environmental variables, especially temperature, pH, dissolved oxygen (DO) and the nutrients. Of 36 dominant species (top 15 ranked contributors in each season), nine (e.g. Pseudovorticella paracratera, Trochilia minuta and Zoothamnium sp.) were significantly correlated with pH, DO or nutrients. Species richness, evenness and diversity measures were significantly correlated with temperature, pH, DO or soluble reactive phosphates. Results demonstrated that periphytic ciliates exhibited a clear seasonal variation in community structures in response to environmental conditions and potentially might be used as a robust bioindicator for assessing environmental quality status in coastal waters.

A new species of genus Hysterothylacium Ward et Magath, 1917 (Nematoda, Anisakidae) from Liparis tanakae (Scorpaeniformes, Liparidae) from the Yellow Sea, China

2007 ◽  
Vol 52 (4) ◽  
Author(s):  
Liang Li ◽  
Zhen Xu ◽  
Luping Zhang
Keyword(s):  
New Species ◽  
Body Length ◽  
Yellow Sea ◽  
Intestinal Caecum ◽  
Northern China ◽  
The Yellow Sea ◽  
Anisakid Nematode ◽  
The Family ◽  
Tail Tip ◽  
A New Species

AbstractA new anisakid nematode, Hysterothylacium liparis sp. nov., is described from the intestine and stomach of the fish, Liparis tanakae (Gilbert et Burke, 1912) (Scorpaeniformes, Liparidae), a fish endemic to the Yellow Sea, China. The new species can be distinguished from the congeners by the absence of lateral alae, the length of the intestinal caecum (1.94–3.35 mm, 58.84–82.47% of oesophageal length), the number and arrangement of the caudal papillae (20–29 precloacal subventral pairs, 1 adcloacal pair and 4 postcloacal pairs), the size of the spicules (1.94–3.74 mm, 4.85–7.30% of body length) and the morphology of the tail tip. This is the first species of adult ascaridoid nematodes to be reported from fishes of the family Liparidae in northern China.

Insights into seasonal shift in the homogeneity of periphytic protozoan fauna in coastal waters of the Yellow Sea, northern China

2021 ◽  
Vol 168 ◽  
pp. 112367
Author(s):  
Mohammad Shafiqur Rahman ◽  
Syed Shabi Ul Hassan Kazmi ◽  
Uroosa ◽  
Henglong Xu
Keyword(s):  
Coastal Waters ◽  
Yellow Sea ◽  
Northern China ◽  
The Yellow Sea ◽  
Seasonal Shift
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