Yujue Wang

• East China Normal University

The property of water mass plays an important role in determining the distribution of phytoplankton in the ocean. In the Yellow Sea, summer stratification constrains water exchange and differentiates the properties of the Yellow Sea Cold Water Mass (YSCWM) and surface water, which in turn affects the spatiotemporal patterns of phytoplankton communi...

The observational and paleo-ecological records on some shelves (e.g., North Sea, Yellow Sea) have indicated that the proportion of Paralia sulcata in the diatom community has been increasing since the 1980s. Because of its heavily-silicified frustules, this species is considered as an important siliceous organism, which can impact the recycling eff...

Phytoplankton size structure is crucial for the functionality of ocean food web and biogeochemical cycling, serving as a key indicator for assessing the state of marine ecosystems quantitatively. Despite the development of various algorithms to quantify phytoplankton size classes (PSCs) using satellite ocean color data, their reliability in optical...

Different chemometric approaches were used to determine generic patterns in the temporal and spatial variations in the coastal water quality of the northern Yellow Sea off Yantai, China. Hierarchical cluster analysis grouped the 16 months into two periods (i.e. March-October and November-February), reflecting strong seasonality in the data, and gro...

Microphytobenthos (MPB) are central to benthic tidal flat ecological networks. Large-scale information on total MPB biomass is difficult to obtain from traditional in-situ measurements. Here, we assessed the effectiveness of using surface sediment properties as proxies for predicting the total (depth-integrated) MPB biomass with Sentinel satellite...

Dynamic of chlorophyll-a (Chl-a) concentration is essential information to understand the status and trends of marine ecosystems. In this study, a Self-Organizing Map (SOM) was applied to delineate space-in-time patterns of Chl-a from satellite dataset during 2002-2022 over the Bohai and Yellow Seas of China (BYS). Six typical Chl-a spatial pattern...

Monitoring the spatiotemporal variability of nutrient concentrations in shelf seas is important for understanding marine primary productivity and ecological problems. However, long time-series and high spatial-resolution nutrient concentration data are difficult to obtain using only on ship-based measurements. In this study, we developed a machine-...

Major seasonal quasi-stationary fronts on shelves play an important role in regulating the spatiotemporal variations in the phytoplankton community. However, knowledge of their effects on the timing and magnitude of spring phytoplankton bloom (SPB) remains limited. Here, based on decadal satellite data (2003–2020), we examine the climatological rel...

Salt marsh habitats in estuaries play important roles in species compositions and macrobenthos abundances. Here, the macrobenthic communities and environmental conditions in two habitats, which are dominated by the invasive species Spartina alterniflora (SA) and native species Suaeda glauca (SG), in the Yellow River Delta (YRD) were studied to asse...

Salt marsh habitats in estuaries play important roles in species compositions and macrobenthos abundances. Here, the macrobenthic communities and environmental conditions in two habitats, which are dominated by the invasive species Spartina alterniflora (SA) and native species Suaeda glauca (SG), in the Yellow River Delta were studied to assess hab...

Although coastal aquaculture ponds provide high-quality fish protein for billions of people, they are threatened by urbanization, pollution, and climate change. Moreover, colossal aquaculture ponds pose damages such as natural wetland shrinkage and water quality deterioration. However, understanding the trends and drivers of coastal aquaculture pon...

Eutrophication in coastal waters caused by excess nutrient inputs has occurred widely on a global scale. Due to the rapid economic development over the last four decades, most of the Chinese coastal waters have experienced a eutrophic process. Major observed trends of coastal eutrophication include two periods, a slow development from the 1970s to...

Most marine algae preferentially assimilate CO 2 via the Calvin-Benson Cycle (C 3) and cat-alyze HCO 3 − dehydration via carbonic anhydrase (CA) as a CO 2-compensatory mechanism, but certain species utilize the Hatch-Slack Cycle (C 4) to enhance photosynthesis. The occurrence and importance of the C 4 pathway remains uncertain, however. Here, we de...

Retrieval of satellite remotely sensed chlorophyll-a (chl-a) concentrations in coastal regions such as the Bohai and Yellow Seas (BYS) is challenging due to their complex oceanic and atmospheric optical properties. The standard OC3M (ocean chl-a three-band algorithm for MODIS (moderate-resolution imaging spectroradiometer)) algorithm has been widel...

The temporal and spatial distributions of dissolved inorganic nitrogen (DIN), dissolved inorganic phosphorus (DIP), and dissolved silicate (DSi), and their long-term changes were investigated in Bohai Bay (BHB) in spring, summer, and autumn (2013-2014). The high DIN values were consistently distributed in the western inshore waters, mainly determin...

The response of phytoplankton assemblages to decreases in nitrogen loading is an essential index to assess the recovery of aquatic ecosystems from eutrophic status. However, a positive signal is hard to observe from short-term operations considering ecosystem complexity. Here, we used decadal data from the Laizhou Bay, China to track the seasonal a...

Different chemometric approaches were used to determine generic patterns in the temporal and spatial variations in the coastal water quality of the northern Yellow Sea off Yantai, China. Hierarchical cluster analysis grouped the 16 months into two periods (i.e. March-October and November-February), reflecting strong seasonality in the data, and gro...

In some studies, the researchers pretreated and measured organic carbon, nitrogen and their isotopes (δ13C and δ15N) of marine sediment together, to save costs and resources of analysis. However, the procedure of acidification to remove inorganic carbon for analysing δ13C can affect the values of nitrogen and δ15N, and the biases vary a lot dependi...

An ecological survey was carried out in May and September 2014 in the Laizhou bay,with the aim of exploring temporal and spatial variations of phytoplankton community and their correlation with environmental factors. The results showed that differences of the average salinity,concentrations of dissolved inorganic nitrogen( DIN) and dissolved inorga...

Seasonal and spatial distributions of nutrients and chlorophyll-a (Chl-a), together with temperature, salinity and total suspended matter (TSM), were investigated in the Yellow River estuary (China) to examine the biogeochemical influence of the “Water and Sediment Regulation Scheme (WSRS)” that is used to manage outflows from the river. Four cruis...

The unusual dynamic conditions in estuaries cause their zooplankton distribution, as well as the zooplankton distribution in the adjacent sea, to be spatially and temporally heterogeneous. To investigate this heterogeneity in the adjacent sea of the Yellow River Estuary, zooplankton samples were collected from there in December 2012, April 2013, Ju...

Spatial distribution of seawater temperature, salinity, nutrient concentrations and Chlorophy a (Chl a) concentrations from 26 stations in the Bohai Sea during July of 2013 were analyzed. The results showed that the water depth and river discharge in summer resulted in the high seawater temperature, low salinity and high nutrient concentrations tog...

Spatial distributions of nitrogen in sediment interstitial water and overlying water together with the sediment grain size and human activities were analyzed at 14 typical tidal zones in China to study the nitrogen distribution and related impact factors. The results showed that surrounding human activities played important roles to the nitrogen di...

A sensitive and specific ultra-high-performance liquid chromatography-tandem triple quadrupole mass spectrometry (UHPLC–MS/MS) method was developed for the purpose of decreasing the detection limit of quantification (LOQ) and reducing sample analysis time. In total, 14 marker pigments were determined and validated using an internal standard (IS) me...

Small environmental disturbances accumulating over a long period of time may cause a regime shift in marine ecosystems, particularly in sensitive oligotrophic waters. Pearl oyster aquaculture, which has a 50 yr history in Australia, has been regarded as an anthropogenic activity with low environmental risk. To assess the long-term environmental eff...

The total carbon ( TC) ，total nitrogen ( TN) and nitrogen stable isotope ratio ( δ15N) in macroalgal tissue were analyzed in conjunction with environmental variables in seawater to study the nitrogen sources and select effective macroalgal species along the Yantai coast． The results showed that macroalgal δ15N values at the three sites were all bet...

Annually recurrent green-tides in the Yellow Sea have been shown to result from direct disposal into the sea of fouling Ulva from Pyropia aquaculture. The role abiotic factors play in Ulva biomass accumulation on rafts was studied to find ways to mitigate this problem. Dissolved inorganic nitrogen (DIN) was very high at all sites, but the highest U...

The community structure and diversity of bacterioplankton from different littoral habitats around the Shandong Peninsula were investigated by constructing 16S rDNA clone libraries. To visualize the differences in the community structure among habitats, non-metric multidimensional scaling (NMDS) was conducted on the basis of a Bray–Curtis similarity...

Carbon stable isotope ratio (13C) has been regarded as an important factor tracing the organic material sources in marine ecosystem. Prior to analysis, samples have to be decarbonated. Inorganic carbon content and component are different in different marine sediments, and appropriate decarbonate methods should be chosen to get the exact results. Th...

The spatial distribution of siliceous microfossils (diatoms and silicoflagellates) in the surface sediments was mapped at 113 sites in the Yellow Sea and sea areas adjacent to the Changjiang (Yangtze) River, China. In total, 267 diatom taxa and two silicoflagellate species were identified from the sediments. The spatial variations in abundance and...

Temporal and spatial variations of surface seawater temperature (SST),salinity (SSS),nutrient concentrations and chlorophyll a concentrations were studied in April,June,August and October 2010 and January and March 2011 in Jiaozhou Bay. Spatial distributions showed that dissolved inorganic nitrogen (DIN),phosphate (PO4) and silicate (SiO3) concentr...

An ecological survey was carried out in July 2013 in the Yellow River adjacent sea after the 16th water sediment regulation, with an aim of understanding the response of phytoplankton assemblages to changed environment. The result showed that temperature and nutrient concentrations decreased gradually from the mouth of river to offshore waters, cor...

We used a multiple-proxy palaeoecological method to reconstruct a 100 yr time series showing coastal eutrophic processes and phytoplankton responses. Total organic carbon, total nitrogen, diatom frustules, dinoflagellate cysts, brassicasterol and dinosterol were extracted from chronologic sediment cores in Sishili Bay, a polluted area in China. The...

Samples of Ulva prolifera and Ulva intestinalis were collected from Porphyra yezoensis culture rafts in Nantong， Jiangsu Province in April， 2010. The growth characteristics of two species under different temperature and nutrient conditions were studied. The results showed that the relative growth rate of U. prolifera was high at the temperature bet...

A survey on the hyperbenthic communities was carried out in the coastal waters of Sishili Bay in the Yellow Sea in July 2009, to investigate the impact of putative anthropogenic activities related to the presence of a sewage outfall, a harbor and an aquaculture site on the benthic ecosystem. An Agassiz net trawl was used to collect hyperbenthos at...

ABSTRACT: We used a multiple-proxy palaeoeco logical method to reconstruct a 100 yr time series showing coastal eutrophic processes and phytoplankton re sponses. Total organic carbon, total nitrogen, diatom frustules, dinoflagellate cysts, brassicasterol and dinosterol were extracted from chronologic sediment cores in Sishili Bay, a polluted area i...

In recent years, an increasing number of reports on blooms of Moon Jellyfish (Aurelia aurita) have occurred in the northern coast of China. Throughout the summer of 2009, we studied the occurrence of an A. aurita bloom in relation to environmental variables in the Yantai Sishili Bay of the Northern Yellow Sea. The mean abundance of A. aurita was 0....

The spatial distribution of dinoflagellate cysts in the surface sediment of Sishili Bay, Yellow Sea, China, was studied, with the purpose of understanding the impact from nutrient enrichment and industrial pollution. Thirty-five dinoflagellate cyst taxa belonging to 15 genera and 3 unknown cysts were identified and quantified at 22 sampling sites....

Glutamine synthetase (GS) is an important enzyme involved in nitrogen assimilation and metabolism in marine phytoplankton. However, little work has been done in situ due to the limitation of crude enzyme preparation methods. In this study, three enzyme preparation methods, high-speed centrifugation (HC, <10 000 g), ultracentrifugation (UC, 70 000 g...

In situ incubation experiments of nutrients addition to surface water from the upwelling region in the Taiwan Strait were conducted to investigate nutrient limitation of this area and the main factors that caused the phytoplankton bloom in June, 2006. Variation of nutrients, Chl-a concentration and phytoplankton species density were analyzed. The r...