Article
Environmental Sciences
David M. Norris, Michael E. Colvin, Leandro E. Miranda, Marcus A. Lashley
Summary: Environmental management often involves decision-making under uncertainty, such as the case of planting mudflats as supplemental fish habitat in flood control reservoirs. Different reservoirs have varying optimal planting decisions depending on elevation contours. The study provides a quantified basis for establishing best management practices.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2022)
Article
Geosciences, Multidisciplinary
R. Scott Winton, Silvia Lopez-Casas, Daniel Valencia-Rodriguez, Camilo Bernal-Forero, Juliana Delgado, Bernhard Wehrli, Luz Jimenez-Segura
Summary: The study shows that most Colombian dams have impacts on water quality, including reducing suspended solids and increasing river temperature. However, the specific effects of dams on river ecosystems are still poorly understood. These findings underscore the importance of implementing environmental monitoring schemes associated with hydrologic infrastructure in developing countries.
HYDROLOGY AND EARTH SYSTEM SCIENCES
(2023)
Article
Environmental Sciences
Jacqueline V. Alva Garcia, Shannon G. Klein, Taiba Alamoudi, Silvia Arossa, Anieka J. Parry, Alexandra Steckbauer, Carlos M. Duarte
Summary: This study assessed the hypoxic thresholds of two Red Sea coral species and found that longer-term hypoxic events can induce coral bleaching, but the effects vary depending on the extent of O-2 reduction and are likely species-specific. The commonly defined hypoxic O-2 levels do not adequately capture the thresholds reported here.
FRONTIERS IN MARINE SCIENCE
(2022)
Article
Environmental Sciences
Jing Zhang, Wei Yang, Guisheng Song, Haiyan Zhang, Liang Zhao
Summary: Based on comprehensive measurements in the Bohai Sea, the physical structure and dynamics of bottom dissolved oxygen were investigated. Strong tidal currents and horizontal temperature and dissolved oxygen gradients were observed. Although the residual current was perpendicular to the horizontal dissolved oxygen gradient, the horizontal residual dissolved oxygen transport was still significant. In addition, a strong high-turbidity event leading to a severe decrease in bottom dissolved oxygen concentration was observed.
FRONTIERS IN MARINE SCIENCE
(2023)
Article
Environmental Sciences
Thomas M. Detmer, Joseph J. Parkos, David H. Wahl
Summary: The study investigates the seasonal patterns in temperature, thermal structure, and dissolved oxygen availability in reservoirs. It also evaluates how atmospheric temperature anomalies at different time lags affect the critical periods for aquatic organisms. The findings highlight the importance of reservoir size and lag periods in predicting climate-induced changes in the thermal and oxygen environments of reservoirs.
Article
Environmental Sciences
Leandro E. Miranda, Nicky M. Faucheux
Summary: Aging and climate change are two slow-moving developments that pose threats to reservoir aquatic habitats globally. Aging affects in-lake habitats directly, while climate change affects both in-lake and off-lake conditions. Climate change is expected to accelerate aging and its effects remain uncertain.
Article
Limnology
Emily Cavaliere, Helen M. Baulch
Summary: This study found that chemical and biotic changes in lakes during winter are highly time-dependent, with distinct differences between early and late winter phases. Late winter, often unstudied due to unsafe ice conditions, is when the spring bloom commonly occurs in ice-covered lakes.
LIMNOLOGY AND OCEANOGRAPHY
(2021)
Article
Environmental Sciences
Bokjin Lee, Heejun Kang, Hye-cheol Oh, Jaehwan Ahn, Sang-Leen Yun, Seogku Kim
Summary: This study evaluated the performance of a novel convectional water circulation system (CWCS) in a eutrophic reservoir and found that the CWCS was effective in breaking thermal stratification, suppressing algal blooms, and inducing natural-like mixing without disturbing the hypolimnion.
Article
Biodiversity Conservation
Haopeng Guan, Xiaoqiang Chen, Ye Jin, Xiaoting Xie, Huade Zhao, Limin Yu, Lin Lin, Shiguo Xu
Summary: This study investigated the process and mechanism of hypolimnetic hypoxia in a mesotrophic reservoir previously affected by acid mine drainage. The importance of the sulfate reduction process in oxygen depletion was emphasized.
ECOLOGICAL INDICATORS
(2023)
Article
Marine & Freshwater Biology
Maddison Mayjor, Amanda J. Reichelt-Brushett, Hamish A. Malcolm, Andrew Page
Summary: Water quality fluctuations in ICOLLs are influenced by natural and artificial openings, with artificial openings leading to greater degradation. While natural openings caused minimal decline in water quality and no fish kills, artificial openings resulted in poor water quality and fish kills. Decline in dissolved oxygen concentrations were observed following artificial openings, highlighting the unique drivers and sources contributing to low oxygen levels in different ICOLLs.
ESTUARINE COASTAL AND SHELF SCIENCE
(2023)
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
Water Resources
Amin Esmaeilzadeh Hanjaniamin, Mahdi Sarai Tabrizi, Hossein Babazadeh
Summary: One of the important issues in water resources quality management is determining the levels of eutrophication and dissolved oxygen. A qualitative study using the CE-QUAL-W2 model showed that the Yamchi dam reservoir experiences a sharp decrease in dissolved oxygen concentration during summer, indicating the need for improvement measures. Recommended strategies include reducing retention time, dewatering from the bottom layers, and preventing agricultural drains from entering the reservoir.
APPLIED WATER SCIENCE
(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
Engineering, Civil
Zehao Lv, Gangsheng Wang, Peng Zhang, Xueshan Ai, Xin Cao, Wei Zheng, Zhenyu Mu, Bowen Yu
Summary: The construction of dams has had both positive and negative impacts on human society and aquatic ecosystems, especially fish populations. To mitigate these impacts, a Reservoir Operation Model for Fish Habitat across Life Stages (ROM-FHLS) was proposed in the Yangtze River Basin. The model demonstrated improvements in power generation and suitable habitat area during different stages of fish life compared to conventional outflow conditions. Additionally, an outflow scheme was proposed to stimulate fish spawning activities. This study provides a fresh perspective on understanding the complex interactions between dam-controlled hydrological processes, river hydrodynamic environment, and fish behavior, with the potential to enhance fish reproduction and aid in the recovery of aquatic populations in dammed rivers.
JOURNAL OF HYDROLOGY
(2023)
Article
Environmental Sciences
E. Slavin, D. J. Wain, L. D. Bryant, M. Amani, R. G. Perkins, C. Blenkinsopp, S. Simoncelli, S. Hurley
Summary: Top-down surface mixers are effective in preventing stratification, controlling cyanobacteria, and limiting sediment release of soluble manganese in drinking water reservoirs. However, their limited range of influence leaves a majority of the reservoir exposed to potential issues such as stratification, anoxia, and internal loading of inorganic nutrients and metals.
WATER RESOURCES RESEARCH
(2022)
Article
Limnology
Ted D. Harris, Jennifer L. Graham
LAKE AND RESERVOIR MANAGEMENT
(2015)
Article
Biotechnology & Applied Microbiology
Timothy G. Otten, Jennifer L. Graham, Theodore D. Harris, Theo W. Dreher
APPLIED AND ENVIRONMENTAL MICROBIOLOGY
(2016)
Review
Marine & Freshwater Biology
Richard P. Stumpf, Timothy W. Davis, Timothy T. Wynne, Jennifer L. Graham, Keith A. Loftin, Thomas H. Johengen, Duane Gossiaux, Danna Palladino, Ashley Burtner
Article
Marine & Freshwater Biology
Donna S. Franey, Arnie M. G. Brady, Christopher D. Ecker, Jennifer L. Graham, Erin A. Stelzer, Pamela Struffolino, Daryl F. Dwyer, Keith A. Loftin
Article
Limnology
John R. Jones, Daniel V. Obrecht, Jennifer L. Graham, Michelle B. Balmer, Christopher T. Filstrup, John A. Downing
Article
Engineering, Environmental
Jennifer L. Graham, Keith A. Loftin, Michael T. Meyer, Andrew C. Ziegler
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2010)
Article
Marine & Freshwater Biology
John R. Beaver, Erin E. Manis, Keith A. Loftin, Jennifer L. Graham, Amina I. Pollard, Richard M. Mitchell
Article
Limnology
Ted D. Harris, Frank M. Wilhelm, Jennifer L. Graham, Keith A. Loftin
LAKE AND RESERVOIR MANAGEMENT
(2014)
Article
Limnology
Ted D. Harris, Frank M. Wilhelm, Jennifer L. Graham, Keith A. Loftin
LAKE AND RESERVOIR MANAGEMENT
(2014)
Article
Limnology
Jennifer L. Graham, Neil M. Dubrovsky, Guy M. Foster, Lindsey R. King, Keith A. Loftin, Barry H. Rosen, Erin A. Stelzer
Article
Biodiversity Conservation
Karan Kakouei, Benjamin M. Kraemer, Orlane Anneville, Laurence Carvalho, Heidrun Feuchtmayr, Jennifer L. Graham, Scott Higgins, Francesco Pomati, Lars G. Rudstam, Jason D. Stockwell, Stephen J. Thackeray, Michael J. Vanni, Rita Adrian
Summary: Land use and climate change are expected to impact phytoplankton in lakes globally, but the effects vary significantly depending on the region and lake sensitivity. Urbanization is identified as a major driver of phytoplankton development in urban lakes, while climate plays a major role in lakes located in remote areas.
GLOBAL CHANGE BIOLOGY
(2021)
Article
Limnology
Ruchi Bhattacharya, John R. Jones, Jennifer L. Graham, Daniel Obrecht, Anthony P. Thorpe, James D. Harlan, Rebecca L. North
Summary: The quantity and composition of dissolved organic matter (DOM) and particulate organic matter (POM) in reservoirs exhibit decadal patterns, with shifts in composition attributed to hydroclimatic conditions. Watershed characteristics and limnological parameters have varying degrees of influence on OM dynamics, depending on the season. Future predictions of drier conditions may negatively affect reservoir water quality.
LIMNOLOGY AND OCEANOGRAPHY
(2022)
Article
Engineering, Environmental
Chiqian Zhang, Kyle D. McIntosh, Nathan Sienkiewicz, Erin A. Stelzer, Jennifer L. Graham, Jingrang Lu
Summary: Phytoplankton is crucial in freshwater ecosystems, but excessive growth can be detrimental. Microscopy is the standard method for assessment but is time-consuming and requires expertise in morphology. qPCR offers an alternative with high throughput and accuracy. This study compared qPCR and microscopy for phytoplankton assessment, finding a positive correlation between the two methods and suggesting qPCR as a useful tool.
Article
Multidisciplinary Sciences
David M. Linz, Nathan Sienkiewicz, Ian Struewing, Erin A. Stelzer, Jennifer L. Graham, Jingrang Lu
Summary: This study used a metagenomics-based approach to investigate the microbial communities and cyanobacteria in 12 major rivers in the United States. It was found that the rivers have taxonomically rich microbial communities, including significant amounts of cyanobacteria. Among the potential cyanotoxin producing cyanobacteria, Microcystis was identified as the predominant genus. These findings provide valuable insights into the presence of cyanobacteria and potential toxins in large rivers and their impact on lotic freshwater ecosystems.
SCIENTIFIC REPORTS
(2023)