Article
Engineering, Civil
Salman Ghaffar, Seifeddine Jomaa, Guenter Meon, Michael Rode
Summary: Semi-distributed hydrological and water quality models have been successfully tested in central Germany to represent nitrate-N and total phosphorus concentrations and loads. Results showed that the model performed well in predicting discharge, with good representation of seasonal dynamics in nutrient concentrations.
JOURNAL OF HYDROLOGY
(2021)
Article
Agronomy
Xiumin Cui, Jiahui Wang, Lingfei Zhang, Tangxin Chen, Yuping Zhuge, Yuxiu Dong
Summary: The aim of this study was to improve fertilizer utilization efficiency and reduce environmental pollution in a wheat-maize rotation system. Different combinations of nitrogen stabilizers and phosphorus activators were used to reduce nitrogen loss and phosphorus fixation in the field experiment. The results showed that these combinations had significant effects on retaining alkali-hydrolysable nitrogen (Nah) and maintaining available phosphorus (Pa) in the soil. They also effectively slowed down the transformation of NH4+ and NHO3- and prevented the migration of nutrients to the deeper layers. Furthermore, the use of these synergists increased wheat and maize yields and reduced the risk of eutrophication from nitrogen and phosphorus.
Article
Environmental Sciences
Risto Vesala, Heikki Kiheri, Erik A. Hobbie, Netty van Dijk, Nancy Dise, Tuula Larmola
Summary: Continuous nitrogen addition over 14 years in ombrotrophic peatlands affected ericoid mycorrhizal (ERM) shrubs at Whim Bog in Scotland. High doses of ammonium alleviated nitrogen deficiency in Calluna vulgaris and Erica tetralix, while low doses of ammonium and nitrate improved plant phosphorus nutrition. Root acid phosphatase activities positively correlated with foliar nitrogen to phosphorus ratios, suggesting enhanced phosphorus uptake due to improved nitrogen nutrition.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Biodiversity Conservation
Nicolas Reinaldo Finkler, Bjorn Gucker, Davi Gasparini Fernandes Cunha
Summary: This study examined the impact of wastewater treatment plant (WWTP) discharges on nutrient concentrations in receiving rivers in Sao Paulo state, Brazil. The results showed that WWTP discharges significantly increased nutrient concentrations and loads, with limited net nutrient uptake along the river reaches. These findings suggest that WWTPs with limited nutrient removal have considerable effects on water chemistry and nutrient cycling, potentially impairing downstream ecosystems.
ECOLOGICAL INDICATORS
(2023)
Article
Engineering, Civil
Songjun Wu, Doerthe Tetzlaff, Tobias Goldhammer, Chris Soulsby
Summary: Climate change and riparian management are significant drivers of hydrological change, impacting nutrient fluxes in lowland streams. Long-term assessment in a mixed land use catchment in northern Germany revealed how climatic variability influences hydrological dynamics, with discharge and groundwater levels closely linked to changes in temperature and rainfall. The study also highlighted the role of beaver dams in moderating flow regimes and facilitating groundwater recharge, as well as the complex dynamics of nutrient concentrations and fluxes in stream water systems.
JOURNAL OF HYDROLOGY
(2021)
Article
Engineering, Environmental
Nathan Tomczyk, Laura Naslund, Carolyn Cummins, Emily V. Bell, Phillip Bumpers, Amy D. Rosemond
Summary: The Clean Water Act of 1972 delegates the implementation and enforcement authority to the states for regulating water quality in U.S. inland waters. This study examines the effectiveness of its nonpoint source provisions in reducing nutrient pollution by leveraging variations in state implementation. The results suggest that current federal policies for improving water quality are not achieving desired outcomes.
Article
Engineering, Environmental
Seung-Hee Kim, Dong-Hun Lee, Min-Seob Kim, Han-Pil Rhee, Jin Hur, Kyung-Hoon Shin
Summary: In this study, an integrated framework was validated to effectively manage nitrate loading in complex river systems through quantitative estimation of nitrate sources. The isotopic compositions of nitrates showed different ranges among land-use types, reflecting different nitrate sources within watersheds. Hydrological conditions, such as water discharge, partially controlled total nitrate loads. Sewage transport near urban boundaries showed unique enhancement and increased total nitrate load in downstream areas. The isotopic and model-based nitrate fluxes showed good correlation for urban sources but poor correlation for agriculture-dominated land use.
Article
Agricultural Engineering
Aiping Tang, Qingyao Wang, Huiqin Wan, Shitian Kang, Shuixia Xie, Jiali Chen, Jiali He, Donghui Liang, Anping Huang, Jingxin Shi, Xianxin Luo
Summary: Recovering phosphorus from liquid waste streams through bio-mediated techniques has attracted increasing interest, but current approaches are highly dependent on ammonium. This study developed a process to recover phosphorus from wastewater under multiple nitrogen species conditions. It found that a bacterial consortium could efficiently utilize both ammonium and nitrate to recover phosphorus. The stability of the bacterial community structure was positively influenced by nitrogen loading, with the genus Acinetobacter being dominant under both nitrate and ammonium conditions.
BIORESOURCE TECHNOLOGY
(2023)
Article
Environmental Sciences
Cristina Postigo, Antoni Ginebreda, Maria Vittoria Barbieri, Damia Barcelo, Jordi Martin-Alonso, Agustina de la Cal, Maria Rosa Boleda, Neus Otero, Raul Carrey, Vinyet Sola, Enric Queralt, Elena Isla, Anna Casanovas, Gemma Frances, Miren Lopez de Alda
Summary: This study combined pesticide occurrence patterns and stable isotope analyses to differentiate the origin of pesticides and nitrogen pollution in a Mediterranean sub-catchment subject to various natural and anthropogenic pressures. Urban/industrial activities were identified as the main pressure on surface water quality, while agriculture also played a significant role in nitrate and ammonium pollution. Surface water pesticide concentrations were higher than in groundwater, originating mainly from soil and sediments desorption processes and urban and industrial use. The stable isotope results pointed to an organic origin of nitrate in surface waters and most groundwater samples, with observed ammonium pollution likely generated by nitrate reduction.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Biotechnology & Applied Microbiology
Marit A. J. Nederlof, Am Ir Neori, Marc C. J. Verdegem, Aad C. Smaal, Henrice M. Jansen
Summary: This study examines the growth, tissue content, and nutrient removal rates of Ulva spp. when exposed to different nitrogen and phosphorus concentrations in a recirculating IMTA system. The results show that unfavorable N:P stoichiometry does not restrict Ulva spp. growth, high orthophosphate concentration is toxic to Ulva spp., and high nitrate concentration does not inhibit phosphorus uptake. The study highlights the importance of acclimatization periods and contributes to the understanding of sustainable and circular production techniques.
JOURNAL OF APPLIED PHYCOLOGY
(2022)
Article
Geosciences, Multidisciplinary
A. Betterle, G. Botter
Summary: The study found that as inter-catchment distance increases, nested catchments show a more pronounced decrease in streamflow correlation compared to non-nested sites, which can be explained by a geometrical model. In terms of hydrological responses, non-nested basins have more correlated hydrologic responses at large distances.
GEOPHYSICAL RESEARCH LETTERS
(2021)
Article
Environmental Sciences
Katarzyna Debska, Beata Rutkowska, Wieslaw Szulc
Summary: This paper discusses the impact of land use and seasons on the concentration of nutrients in the waters of the Utrata River. The study analyzes the spatial and temporal dynamics of nutrient loads from different zones within the river catchment area. The results indicate higher nutrient concentrations in urban and agricultural areas compared to grasslands.
ENVIRONMENTAL MONITORING AND ASSESSMENT
(2022)
Article
Environmental Sciences
Li Zhang, Qian Xu, Keyi Wang, Guoxin Chen, Zhuoran Luo, Xiang Li, Biyun Guo
Summary: Rainfall and runoff data were collected in a small headwater catchment in Hong Kong to study the rainfall-runoff processes. The study found that rainfall depth and initial discharge are important factors in predicting the runoff coefficient. The findings have significant implications for water resources management and decision-making processes.
FRONTIERS IN ENVIRONMENTAL SCIENCE
(2023)
Article
Environmental Sciences
Rohan Eccles, Hong Zhang, David Hamilton, Ralph Trancoso, Jozef Syktus
Summary: This study examines the impacts of climate change on streamflow and water quality in the subtropical Logan-Albert catchment in Australia. The results show that climate warming may lead to decreased streamflow and contaminant loads, with the largest decreases predicted during the dry season. This could result in reduced flushing and increased importance of point source loads in urbanizing catchments.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2023)
Article
Multidisciplinary Sciences
Damian Bojanowski, Paulina Orlinska-Wozniak, Pawel Wilk, Ewa Szalinska
Summary: This study provides a detailed insight into the estimation of nutrient loads in an agricultural catchment, using both mass balance and modelling approaches. The contributions of nutrient sources were similar between the two methods, although the final estimates differed due to method specificity. The advantages and disadvantages of both approaches are discussed, and a hybrid solution on a local and country wide scale is proposed.
SCIENTIFIC REPORTS
(2022)
Article
Agronomy
Zhigan Zhao, Kirsten Verburg, Neil Huth
FIELD CROPS RESEARCH
(2017)
Article
Plant Sciences
Peter J. Thorburn, Jody S. Biggs, Jeda Palmer, Elizabeth A. Meier, Kirsten Verburg, Danielle M. Skocaj
FRONTIERS IN PLANT SCIENCE
(2017)
Article
Environmental Sciences
John Kandulu, Peter Thorburn, Jody Biggs, Kirsten Verburg
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2018)
Article
Agriculture, Multidisciplinary
Enh Wang, Hamish Cresswell, Qiang Yu, Kirsten Verburg
AGRICULTURE ECOSYSTEMS & ENVIRONMENT
(2008)
Article
Agronomy
Kirsten Verburg, Warren J. Bond, James R. Hunt
FIELD CROPS RESEARCH
(2012)
Article
Agriculture, Multidisciplinary
J. R. Hunt, C. Browne, T. M. McBeath, K. Verburg, S. Craig, A. M. Whitbread
CROP & PASTURE SCIENCE
(2013)
Article
Environmental Sciences
M. P. Vilas, K. Verburg, P. J. Thorburn, M. E. Probert, G. D. Bonnett
SCIENCE OF THE TOTAL ENVIRONMENT
(2019)
Article
Agronomy
K. Verburg, Z. Zhao, J. S. Biggs, P. J. Thorburn
INTERNATIONAL SUGAR JOURNAL
(2016)
Article
Agricultural Engineering
N. I. Huth, K. L. Bristow, K. Verburg
TRANSACTIONS OF THE ASABE
(2012)
Article
Agriculture, Multidisciplinary
J. A. Kirkegaard, J. R. Hunt, T. M. McBeath, J. M. Lilley, A. Moore, K. Verburg, M. Robertson, Y. Oliver, P. R. Ward, S. Milroy, A. M. Whitbread
CROP & PASTURE SCIENCE
(2014)
Article
Agriculture, Multidisciplinary
K. Verburg, W. J. Bond, J. R. Hirth, A. M. Ridley
AUSTRALIAN JOURNAL OF AGRICULTURAL RESEARCH
(2007)
Article
Agriculture, Multidisciplinary
K. Verburg, W. J. Bond, L. E. Brennan, M. J. Robertson
AUSTRALIAN JOURNAL OF AGRICULTURAL RESEARCH
(2007)
Article
Agriculture, Multidisciplinary
EL Wang, CJ Smith, WJ Bond, K Verburg
AUSTRALIAN JOURNAL OF AGRICULTURAL RESEARCH
(2004)
Article
Agronomy
BA Keating, PS Carberry, GL Hammer, ME Probert, MJ Robertson, D Holzworth, NI Huth, JNG Hargreaves, H Meinke, Z Hochman, G McLean, K Verburg, V Snow, JP Dimes, M Silburn, E Wang, S Brown, KL Bristow, S Asseng, S Chapman, RL McCown, DM Freebairn, CJ Smith
EUROPEAN JOURNAL OF AGRONOMY
(2003)