Article
Limnology
Marie-Elodie Perga, Camille Minaudo, Tomy Doda, Florent Arthaud, Harsh Beria, Hannah E. Chmiel, Nicolas Escoffier, Thibault Lambert, Raphaelle Napolleoni, Biel Obrador, Pascal Perolo, Janine Ruegg, Hugo Ulloa, Damien Bouffard
Summary: By studying high-temporal resolution time series of dissolved oxygen concentration and temperature in 14 mountain lakes, it was found that the duration of bottom hypoxia under ice varies greatly among lakes and years. The variability of hypoxia duration is primarily explained by changes in the decay rate of dissolved oxygen above the lake bottom, which is linked to physical controls such as deep-water warming. The study also showed that the summer light climate is a key driver of the dissolved oxygen decay rate and hypoxia duration under the ice.
LIMNOLOGY AND OCEANOGRAPHY
(2023)
Article
Environmental Sciences
Liqing Zeng, Changzhou Yan, Fan Yang, Zhuo Zhen, Jiaming Yang, Jielun Chen, Yujie Huang, Yuhui Xiao, Wen Zhang
Summary: This study investigates the impact of pH and dissolved oxygen conditions on the migration of arsenic at the sediment-water interface, and finds that lower DO environments, particularly at pH 9.5, result in higher release quantities and rates of arsenic.
Article
Environmental Sciences
Wei Zhi, Christoph Klingler, Jiangtao Liu, Li Li
Summary: This study reconstructed daily water temperature and dissolved oxygen in rivers across the United States and Central Europe using a deep learning model. The results showed that a majority of the rivers experienced persistent warming and deoxygenation, with urban rivers exhibiting the most rapid warming and agricultural rivers experiencing the slowest warming but fastest deoxygenation.
NATURE CLIMATE CHANGE
(2023)
Article
Environmental Sciences
Xiuling Bai, Yunkai Zhou, Wenna Ye, Hongyan Zhao, Jiehua Wang, Wenchao Li
Summary: The transformation rate of organic phosphorus is influenced by temperature and dissolved oxygen, with different compounds responding differently. Alkaline phosphatase may play a key role in the transformation of organic P at lower temperatures.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Environmental Sciences
Marek Baxa, Martin Musil, Miroslav Kummel, Petr Hanzlik, Blanka Tesarova, Libor Pechar
Summary: The research indicates that the oxygen regime in aquatic ecosystems varies significantly depending on the ecosystem state. During the clearwater period, the fishpond is mainly heterotrophic with low oxygen fluctuations, while in the summer phytoplankton bloom period, the fishpond shifts to autotrophy with extreme oxygen fluctuations.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Review
Environmental Sciences
Jafar Ali, Yuesuo Yang, Gang Pan
Summary: Sediment hypoxia is a growing problem with negative ecological impacts, and conventional aeration practices are not effective. Clay loaded oxygen micro-nanobubbles (OMNBs) offer a cost-effective and stable method for delivering dissolved oxygen and remedying sediment hypoxia and pollution.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2023)
Article
Environmental Sciences
Guining Wei, Jiani Xu, Bing Yang, Wei Li, Yixin He, Bingran Tang, Yongchuan Yang, Ran Cai, Xiaojun Miao, Mengzi Liu, Hong Li, Ruilin Wang
Summary: During the experiment, the release of nutrients from anoxic sediment was reduced by applying oxygen-and lanthanum-modified zeolite (LOZ) and submerged macrophytes (V. natans) at low temperature (5℃). The use of LOZ facilitated slower oxygen release and diffusion as well as the growth of V. natans. When the temperature was raised to 30℃, the release of phosphorus and nitrogen from the sediment was significantly reduced. In addition, LOZ inhibited emissions of N2O, CH4, and CO2 and promoted the growth of V. natans, leading to sustainable improvement in water quality.
ENVIRONMENTAL RESEARCH
(2023)
Article
Environmental Sciences
Bushra Tasnim, Jalil A. Jamily, Xing Fang, Yangen Zhou, Joel S. Hayworth
Summary: This study modified an hourly water quality model MINLAKE2018 for shallow lakes to simulate diurnal variations of water temperature and dissolved oxygen. The results showed that the hourly model performed better in simulating temperature and DO compared to the daily model MINLAKE2012.
Article
Environmental Sciences
Koichi Shimotori, Haruki Yamamoto, Akio Imai, Ayato Kohzu, Takahiro Okamoto
Summary: The newly developed SOD measurement method provides a faster and more feasible alternative to the traditional laboratory method, with the ability to take multiple measurements from a single sediment core sample, reducing uncertainty associated with sediment structure and providing reliable SOD data.
JOURNAL OF SOILS AND SEDIMENTS
(2021)
Article
Environmental Sciences
Daniel E. Kroes, Richard H. Day, Michael D. Kaller, Charles R. Demas, William E. Kelso, Tiffany Pasco, Raynie Harlan, Steven Roberts
Summary: This study investigates the water movement, volume, residence time (RT), sediment trapping efficiency (TE), and dissolved oxygen concentrations (DO) in the Atchafalaya River Basin, an important bottomland hardwood swamp in the United States. The results show that water discharge and residence time are influenced by connectivity and river stage, and high stages with warm water temperatures lead to a decline in DO. Suspended sediment concentrations are correlated with hydrologic connectivity, RT, water volume, discharge losses, and TE. The high TE and long RT indicate the potential of this ecosystem to process nutrients and reduce nutrient loads to the northern Gulf of Mexico.
WATER RESOURCES RESEARCH
(2022)
Article
Engineering, Civil
Michael G. Hutchins, Yueming Qu, Matthew B. Charlton
Summary: The study found that local hydrological information is essential for successful simulation of river water quality. The use of local knowledge significantly improves goodness-of-fit statistics in simulating dissolved oxygen and water temperature. This highlights the importance of incorporating local information for accurate water quality modeling.
JOURNAL OF HYDROLOGY
(2021)
Article
Chemistry, Multidisciplinary
Qianyun Tang, Dandan Wang, Jinhui Cui, Yiheng Zhang, Junyang Mei, Jing Du, Anyue Xia, Qian Sun, Dan Luo, Baosan Han, Mingzhe Gan, Peifeng Liu
Summary: This study presents a novel microfluidic platform for precise and flexible control of oxygen concentrations in microbial suspension culture. The platform demonstrates unique capabilities for spatiotemporal gas control and detection, allowing for applications in screening, studying, and culturing industrial or niche-specific environmental microbiomes.
Article
Environmental Sciences
Christopher J. Sergeant, J. Ryan Bellmore, Rebecca A. Bellmore, Jeffrey A. Falke, Franz J. Mueter, Peter A. H. Westley
Summary: The frequency of hypoxia events in coastal aquatic ecosystems has increased since the late 20th century. The causes and consequences of hypoxia for important species are poorly understood. In rivers, oxygen depletion can be caused by high densities of spawning salmon consuming oxygen faster than reaeration. In Southeast Alaska, hatchery salmon production has rapidly increased, and straying salmon densities are high near hatchery release sites. Low-gradient stream reaches are the most prone to hypoxia. About 17,000 km of streams are vulnerable to high densities of hatchery-origin salmon.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Environmental Sciences
Zhanling Wang, Changhui Wang, Helong Jiang, Huan Liu
Summary: This study comprehensively investigated the migration and transformation of P during the formation of a new sediment-water interface (SWI) under different dissolved oxygen (DO) levels. The results suggest that high DO levels in the overlying water can promote the migration of P from the upper sediment layer to the bottom sediment layer, and the interactions between organic matter and Al, Fe, and Ca in the sediment play a crucial role in P migration.
Article
Environmental Sciences
Lei Zhang, Cheng Liu, Kai He, Qiushi Shen, Jicheng Zhong
Summary: The study found that methane concentrations in water in black bloom prone areas changed significantly over time, with the highest values appearing in warm months. Methane concentrations in water in these areas were significantly higher compared to control sites, and were consistent with methane concentrations in sediment. Methane concentrations in water showed significant positive correlations with temperature, total phosphorus, total nitrogen, ammonia-N, and soluble reactive phosphorus, but showed a significant inverse correlation with dissolved oxygen.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Biodiversity Conservation
Peng Zhao, Shuming Liu, Yi Zhou, Tim Lynch, Wenhu Lu, Tao Zhang, Hongsheng Yang
Summary: High-resolution satellite sensors can be used to estimate animal populations size accurately, as demonstrated in a study focusing on Whooper Swans. The method developed in this study provides a precise and effective way to estimate population sizes of visible and gregarious animals.
CONSERVATION BIOLOGY
(2021)
Article
Biology
Hao Song, Ximing Guo, Lina Sun, Qianghui Wang, Fengming Han, Haiyan Wang, Gregory A. Wray, Phillip Davidson, Qing Wang, Zhi Hu, Cong Zhou, Zhenglin Yu, Meijie Yang, Jie Feng, Pu Shi, Yi Zhou, Libin Zhang, Tao Zhang
Summary: The study reveals a significant expansion and diversification of the IAP gene family in hard clams, indicating its crucial role in evolutionary success in coping with environmental stresses.
Article
Environmental Sciences
Yu Zhang, Peng Zhao, Shidong Yue, Mingjie Liu, Yongliang Qiao, Shaochun Xu, Ruiting Gu, Xiaomei Zhang, Yi Zhou
Summary: The study showed that anoxic stress significantly reduced leaf Fv/Fm and had a negative impact on photosynthesis and growth of Zostera marina. Metabolomic analysis revealed promotion of glycolysis process and inhibition of the TCA cycle under anoxia, indicating a complex strategy of acclimation and adaptation in seagrass to resist anoxic stress.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Biodiversity Conservation
Shaochun Xu, Yi Zhou, Pengmei Wang, Feng Wang, Xiaomei Zhang, Shidong Yue, Yu Zhang, Yongliang Qiao, Mingjie Liu
Summary: Seagrasses, like eelgrass, play a key role in coastal ecosystems by cycling elements. Eelgrass tissues in northern China showed variable elemental contents with seasonal trends and spatial variations in isotope content. The study identified leaf sheaths as a potentially valuable indicator for ecological research in seagrass ecosystems.
ECOLOGICAL INDICATORS
(2021)
Article
Engineering, Environmental
Ruiting Gu, Haiying Lin, Yi Zhou, Xiaoyue Song, Shaochun Xu, Shidong Yue, Yu Zhang, Shuai Xu, Xiaomei Zhang
Summary: The study found that the seedling period of Ruppia sinensis is the most vulnerable, showing visible toxic effects at the individual level in response to 50 μM copper and 500 μM cadmium after 4 days of exposure. The highest concentrations of trace metals were found in the vacuoles and cytoplasmic structures of aboveground tissues. Genes related to signal identification and protein processing were significantly downregulated after 4 days of exposure to copper and cadmium. These results provide insights into the trace metal-absorbing capacity of R. sinensis and its phytoremediation potential.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Environmental Sciences
Shaochun Xu, Shuai Xu, Yi Zhou, Shidong Yue, Xiaomei Zhang, Ruiting Gu, Yu Zhang, Yongliang Qiao, Mingjie Liu
Summary: Seagrass meadows in Caofeidian shoal harbor in the Bohai Sea of northern China were studied to evaluate the impact of sea reclamation activities using Landsat imagery. The study found that sea reclamation resulted in rapid changes in seagrass meadows, mainly due to physical damage, excessive sedimentation, and increased turbidity. However, sea reclamation also created artificial longshore bars that provided relatively sheltered conditions for seagrass growth, leading to a large increase in habitat since 2012.
Article
Plant Sciences
Ruiting Gu, Xiaoyue Song, Yi Zhou, Shaochun Xu, Shuai Xu, Shidong Yue, Yu Zhang, Xiaomei Zhang
Summary: This study investigated the differences in biomass, seed bank, and sediment nutrient composition between annual and perennial populations of Ruppia sinensis in the Yellow River Delta. Results showed that the annual population had higher biomass and seed bank and higher nitrogen levels in sediment compared to the perennial population. The annual population also exhibited greater resilience after habitat desiccation.
FRONTIERS IN PLANT SCIENCE
(2021)
Article
Plant Sciences
Yu Zhang, Shaochun Xu, Shidong Yue, Xiaomei Zhang, Yongliang Qiao, Mingjie Liu, Yi Zhou
Summary: Based on observations and experiments on eelgrass seeds in Swan Lake and Qingdao Bay in northern China, it was found that although the seeds matured at the same time, their germination time varied. Further analysis revealed that this difference was determined by internal molecular mechanisms rather than environmental factors. Comparative transcriptome analysis showed that eelgrass seeds in Swan Lake had a deeper dormancy depth and required the mobilization of more related genes to break dormancy and initiate germination compared to seeds in Qingdao Bay.
FRONTIERS IN PLANT SCIENCE
(2022)
Article
Environmental Sciences
Shaochun Xu, Shuai Xu, Yi Zhou, Shidong Yue, Xiaomei Zhang, Ruiting Gu, Yu Zhang, Yongliang Qiao, Mingjie Liu, Yunling Zhang, Zhenhai Zhang
Summary: This study conducted field sampling over 19 months in a large seagrass meadow in a eutrophic bay in northern China to investigate eelgrass population reproduction status and ecological interactions. The results showed that asexual growth was important for maintaining existing meadows, while sexual reproduction played a critical role in colonization of new areas. Nutrient uptake by seagrass might reduce the probability of a red tide in the study area.
MARINE POLLUTION BULLETIN
(2022)
Article
Ecology
Shaochun Xu, Yi Zhou, Yongliang Qiao, Shidong Yue, Xiaomei Zhang, Yu Zhang, Mingjie Liu, Yunling Zhang, Zhenhai Zhang
Summary: This study describes a novel method using seed ball burial for eelgrass restoration, and tests its effectiveness in different environmental conditions. The results show that the seed ball restoration method has varying effects at different sites, and there is an environmental mismatch in large-scale restoration.
RESTORATION ECOLOGY
(2023)
Article
Multidisciplinary Sciences
Shaochun Xu, Yu Zhang, Yi Zhou, Shuai Xu, Shidong Yue, Mingjie Liu, Xiaomei Zhang
Summary: This study investigated the distribution of eelgrass at its southern limits on the eastern coast of China and found a northward shift in the southern limit. Further experiments showed that high water temperatures negatively affected eelgrass growth and caused shoot mortality. These findings indicate that suitable eelgrass habitat has moved further north along the eastern coast of China.
Article
Environmental Sciences
Yongliang Qiao, Yu Zhang, Shaochun Xu, Shidong Yue, Xiaomei Zhang, Mingjie Liu, Lingling Sun, Xiaoping Jia, Yi Zhou
Summary: This study examined the toxic effects of copper and cadmium on eelgrass at multiple levels. The results showed that copper was more toxic to eelgrass than cadmium. High temperatures increased heavy metal damage, while low temperatures inhibited damage. Copper and cadmium had a synergistic effect on photosynthesis. Transcriptome analysis revealed severe damage to the photosynthetic system under cadmium stress, while copper stress resulted in up-regulation of genes related to glutathione metabolism. Recovery experiments showed that the damage caused by short-term copper and cadmium stress was reversible. These findings provide insights into the heavy metal toxic effects and resistance strategies of eelgrass, highlighting its potential for phytoremediation, especially for cadmium.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Environmental Sciences
Shaochun Xu, Zonghe Yu, Yi Zhou, Shidong Yue, Junhua Liang, Xiaomei Zhang
Summary: Large-scale kelp aquaculture in Ailian Bay, northern China, can remove 1309 tons of carbon, 104 tons of nitrogen, and 12 tons of phosphorus, effectively combating eutrophication. The study provides evidence for the hypothesis that farmed kelp can remove nutrients and demonstrates the bioremediation potential of kelp farming.
MARINE POLLUTION BULLETIN
(2023)
Article
Environmental Sciences
Ruiting Gu, John Statton, Susi Rahmawati, Renae Hovey, Yi Zhou, Jianwu Tang, Shuo Yu, Gary A. Kendrick
Summary: The seed bank of Halophila ovalis plays a crucial role in resilience and restoration. Seasonal changes in seed abundance and viability were studied, and a viability test was conducted. The results showed differences in seed density and low proportion of viable seeds in the seed bank. Low salinity and extreme rainfall events could affect seed viability and germination, limiting population growth.
FRONTIERS IN MARINE SCIENCE
(2022)
Article
Green & Sustainable Science & Technology
Mingjie Liu, Shaochun Xu, Shidong Yue, Yongliang Qiao, Yu Zhang, Xiaomei Zhang, Yi Zhou
Summary: This study proposes a method to evaluate the seed provision efficacy of detached eelgrass reproductive shoots. Mature seeds were collected from detached eelgrass reproductive shoots in Swan Lake, China, using in situ net cages. The results showed that each detached reproductive shoot produced an average of 50 viable seeds, and the potential seed yield overestimated the actual seed yields. The simplest treatment (a single reproductive shoot) was convenient and robust for this method, indicating its potential for improving the efficiency of seed use in restoration projects.
