Article
Ecology
Natalie K. Rideout, Zacchaeus G. Compson, Wendy A. Monk, Meghann R. Bruce, Mehrdad Hajibabaei, Teresita M. Porter, Michael T. G. Wright, Donald J. Baird
Summary: The study examines the relationships among floodplain wetland habitats, invertebrate communities, and ecosystem function. It reveals the importance of environmental filters and traits linked to ecosystem functions in shaping the diversity and stability of floodplain ecosystems.
FUNCTIONAL ECOLOGY
(2022)
Article
Engineering, Environmental
Shanghua Wu, Yuzhu Dong, Thorsten Stoeck, Shijie Wang, Haonan Fan, Yaxin Wang, Xuliang Zhuang
Summary: This study investigated the heterogeneity and assembly mechanisms of planktonic and benthic algae in Dongting Lake. It found that stochastic dispersal dominated the assembly of planktonic algae, while deterministic environmental filtering shaped the communities of benthic algae. The study also identified the thresholds for benthic algal shifts in response to environmental filters. Therefore, upstream and downstream monitoring as well as thresholds of environmental factors should be considered in further aquatic ecological monitoring or regulatory programs of harmful algal blooms in these complex systems.
Article
Engineering, Civil
Juan Wu, Qi Zhang, Yunliang Li, Chong-Yu Xu, Xuchun Ye
Summary: This study investigates the stage-area hysteretic relationship in large heterogeneous lake-floodplain systems using the Poyang Lake as an example. By utilizing multi-source remote sensing data and observed water levels, the Enhanced Spatial and Temporal Adaptive Reflection Fusion Model (ESTARFM) is adopted. The results show significant inconsistency in inundation dynamics between the main lake and seasonal floodplain lakes. Furthermore, it is found that seasonal lakes in floodplain settings have a crucial impact on the hysteresis of upstream and downstream stations. This study provides valuable insights into the complexity of hydrological behavior in large heterogeneous lake-floodplain systems, which is important for lake water resources and ecological management.
JOURNAL OF HYDROLOGY
(2023)
Article
Environmental Sciences
Molly Mills, Seungjun Lee, Dixie Mollenkopf, Thomas Wittum, S. Mazeika Patricio Sullivan, Jiyoung Lee
Summary: The research conducted on the Scioto River Watershed in Ohio, United States, revealed that fish gut and periphyton are the most concerning reservoirs for carbapenem resistance genes due to their relatively high concentration, diverse microbial communities, and natural functions that promote AR.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Biochemistry & Molecular Biology
Giorgio Aglieri, Charles Baillie, Stefano Mariani, Carlo Cattano, Antonio Calo, Gabriele Turco, Davide Spatafora, Antonio Di Franco, Manfredi Di Lorenzo, Paolo Guidetti, Marco Milazzo
Summary: The study combines multiple survey methods to investigate fish diversity, finding that small-scale fishery catches provide higher taxonomic diversity estimates and environmental DNA analysis is the only method able to gather the entire spectrum of considered functional traits.
Article
Environmental Sciences
Kaitlyn O'Mara, Michael Venarsky, Ben Stewart-Koster, Glenn B. McGregor, Cameron Schulz, Martin Kainz, Jonathan Marshall, Stuart E. Bunn
Summary: Longitudinal and lateral connectivity is crucial for mobile aquatic species in rivers. Water resource developments like dams and levees may disrupt these connections, causing river fragmentation. The study used sulfur stable isotopes as a tracer to estimate fish movements and modeled potential dam impact on fish movement. The research revealed differences in fish migration patterns among species and sites, with higher immigration in more connected sites. Impacts of water resource development on fish movement varied between dam scenarios, with a dam on the main channel predicted to have the highest impact.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Ecology
Shuo Zong, Jeanine Brantschen, Xiaowei Zhang, Camille Albouy, Alice Valentini, Heng Zhang, Florian Altermatt, Loic Pellissier
Summary: Biodiversity loss in river ecosystems is more severe than in terrestrial systems, and spatial conservation and restoration plans are needed. However, high-resolution maps of fish distribution in large riverine systems are limited. A combination of remote sensing and environmental DNA (eDNA) can be used to map species distributions in large rivers.
REMOTE SENSING IN ECOLOGY AND CONSERVATION
(2023)
Article
Environmental Sciences
Bing Li, Guishan Yang, Rongrong Wan, Xijun Lai, Paul D. Wagner
Summary: This study investigates the long-term changes of five key ecosystem services in China's Poyang Lake and examines the impact of the Three Gorges Dam on hydrology. The results show that Poyang Lake provides significant ecosystem services, but these services have been decreasing since the 2000s.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2022)
Review
Environmental Sciences
Jonathan M. Abell, Michael A. Pingram, Deniz oezkundakci, Bruno O. David, Mike Scarsbrook, Thomas Wilding, Alicia Williams, Matt Noble, James Brasington, Alton Perrie
Summary: New Zealand has diverse large river ecosystems that are impaired by ecological impacts, and river restoration is a global field with potential lessons for NZ. This study provides a critical review of large floodplain river restoration in NZ, evaluating 31 methods aligned with 14 restoration goals and identifying key knowledge or policy gaps.
REGIONAL ENVIRONMENTAL CHANGE
(2023)
Article
Environmental Sciences
Kristen L. Bouska, Molly Sobotka, Todd Slack, Heather Theel
Summary: Side channels play important ecological roles in large floodplain rivers, especially in areas where habitat conditions are degraded or diminished. Our study aimed to investigate the ecological structure of side channels and their effects on fish communities in the Upper Mississippi and Illinois Rivers. We found that physical factors of side channels, such as size, heterogeneity, and connectivity, had varying explanatory contributions to fish community responses. The classification of side channels revealed spatial contrasts in abundance and diversity across different reaches. These findings highlight the significance of understanding the diversity and abundance of side channels for landscape-scale ecological functions.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Environmental Sciences
Jie Liang, Qianfang Meng, Xin Li, Yujie Yuan, Yuhui Peng, Xiaodong Li, Shuai Li, Ziqian Zhu, Ming Yan
Summary: The study showed that hydrology-climate changes and food availability significantly impact waterbirds diversity and population dynamics. Unseasonable water recession timing has negative effects on Anatidae, especially the Lesser White-fronted goose population. Factors like water level, flow, and water recession interval time explain 71% of maximum NDVI in Dongting Lake. Additionally, hydraulic interactions between the mainstream and each lake affect vegetation growth and foraging suitability.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Biodiversity Conservation
Zhengfei Li, Jonathan D. Tonkin, Xingliang Meng, Zhenyuan Liu, Junqian Zhang, Xiao Chen, Zhicai Xie, Jani Heino
Summary: This study focuses on benthic macroinvertebrates collected seasonally in Dongting Lake, China, and examines the variation in metacommunity structure and underlying mechanisms among different seasons. The results show that metacommunity dynamics shift significantly between seasons due to changes in hydrological conditions, highlighting the importance of considering temporal aspects in understanding metacommunity organization.
ECOLOGICAL INDICATORS
(2022)
Article
Limnology
Bianca Molinari, Ben Stewart-Koster, Maria Fernanda Adame, Max D. Campbell, Glenn McGregor, Cameron Schulz, Tim J. Malthus, Stuart Bunn
Summary: Floodplain wetlands in the Mitchell River in tropical Australia show high algal productivity in riverine wetlands and submerged habitats. Habitat type and turbidity can predict algal productivity with reasonable accuracy, providing insights for conservation and water planning frameworks.
Article
Environmental Sciences
Caroline C. Arantes, Juliana Laufer, Adam Mayer, Emilio F. Moran, Igor R. A. Sant' Anna, Jynessa Dutka-Gianelli, Maria Claudia Lopez, Carolina R. C. Doria
Summary: Understanding the impacts of hydropower dam construction on fisheries and fishers' livelihoods in the Brazilian Amazon, we found that most fishers perceived declines in yields and changes in fish species composition after the dams were built. To cope with these changes, fishers have had to increase fishing time, change fishing gears, and modify their fish consumption habits.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2023)
Article
Environmental Sciences
Bing Li, Guishan Yang, Rongrong Wan, Ligang Xu
Summary: This study examined the variations of Chlorophyll a (Chla) and its relationship with environmental stressors in Poyang Lake over an 11-year period. The results showed that hydrological connectivity had a significant impact on the environmental variables and the growth of phytoplankton in the lake. The study also identified different patterns of hydrological connectivity and their corresponding effects on Chla dynamics.
ENVIRONMENTAL POLLUTION
(2022)