Article
Environmental Sciences
Mary R. Arenberg, Yuji Arai
Summary: The study demonstrated that the carbon composition of plant leaf residue can affect phosphorus reaction dynamics in floodplain soils under different soil organic carbon to phosphorus ratios. Residues with low aromaticity promoted phosphorus mineralization, while residues with high aromaticity and hydrophobicity caused phosphorus immobilization.
Article
Environmental Sciences
Xin Liu, Dingming Zhang, Huijun Wu, James J. Elser, Zengwei Yuan
Summary: Over the past 15 years in China, there has been excessive input of nitrogen and phosphorus, resulting in a significant decrease in the nitrogen to phosphorus ratio. While nitrogen use efficiency has increased, most crops have shown a decreasing trend in phosphorus use efficiency. This highlights the need for further exploration in phosphorus management for sustainable agriculture.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2023)
Article
Environmental Sciences
Nathan J. Smucker, Erik M. Pilgrim, Huiyun Wu, Christopher T. Nietch, John A. Darling, Marirosa Molina, Brent R. Johnson, Lester L. Yuan
Summary: Interest in developing periphytic diatom and bacterial indicators of nutrient effects is growing, but temporal variability can complicate relationships between indicators and nutrients. This study found that while nutrient concentrations varied with agriculture in watersheds, the variability of diatom and bacterial assemblages within sites remained consistent. Weekly low and high nutrient diatom and bacterial metrics were more strongly correlated with site mean nutrient concentrations over the sampling period, and correlations with TP concentrations were consistently strong throughout the study.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Environmental Sciences
Hannah May, Sarah Rixon, Scott Gardner, Pradeep Goel, Jana Levison, Andrew Binns
Summary: This study focuses on the transport of nitrogen (N) and phosphorus (P) in low permeability agricultural watersheds. Results show that both surface water and tile drain discharge contribute to nutrient release, with sediment quality and hyporheic exchange also playing a role. Best management practices should aim to reduce agricultural nutrient sources at the watershed scale.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Soil Science
Marie Spohn, Bjorn Berg
Summary: During the initial stages of leaf and needle litter decomposition, microorganisms face nitrogen and phosphorus scarcity. The aim of the study was to explore the import and release of nutrients into and from decomposing Norway spruce and Scots pine needle litter. The results show that nutrient import into decomposing plant litter is a quantitatively important process in temperate and boreal forests, alleviating stoichiometric imbalance and contributing to microbial nutrient acquisition.
SOIL BIOLOGY & BIOCHEMISTRY
(2023)
Article
Environmental Sciences
A. H. W. Beusen, J. C. Doelman, L. P. H. Van Beek, P. J. T. M. Van Puijenbroek, J. M. Mogollon, H. J. M. Van Grinsven, E. Stehfest, D. P. Van Vuuren, A. F. Bouwman
Summary: The analysis revealed that more efforts are needed to slow down the declining trend of global nutrient cycles, particularly with agriculture, human sewage, and aquaculture becoming dominant factors. The increasing N:P ratios may lead to harmful algal blooms, indicating the necessity of a balanced management system for both N and P in all systems.
GLOBAL ENVIRONMENTAL CHANGE-HUMAN AND POLICY DIMENSIONS
(2022)
Article
Ecology
Gaston E. Small, Niklas Martensson, Benjamin D. Janke, Genevieve Suzanne Metsone
Summary: Urban gardens and farms using compost as a nutrient source can contribute significantly to urban nutrient budgets through stormwater runoff. The study finds that gardens and farms, although occupying a small fraction of land area, account for a large proportion of nitrogen and phosphorus inputs to urban landscapes. The significance of their contribution depends on compost inputs and nutrient retention efficiency, highlighting the importance of understanding the fate of excess nutrients on urban landscapes.
LANDSCAPE AND URBAN PLANNING
(2023)
Article
Ecology
Gaston E. Small, Niklas Martensson, Benjamin D. Janke, Genevieve Suzanne Metson
Summary: Urban gardens and farms contribute significantly to nitrogen and phosphorus export in stormwater runoff, due to high compost inputs and low nutrient use efficiencies. The contribution of gardens to nutrient export depends on retention efficiency values, with high efficiency minimizing their impact. Understanding the long-term fate of excess nutrients in urban landscapes is crucial.
LANDSCAPE AND URBAN PLANNING
(2023)
Article
Plant Sciences
Nazmus Salahin, Md. Khairul Alam, Sharif Ahmed, Mohammad Jahiruddin, Ahmed Gaber, Walaa F. Alsanie, Akbar Hossain, Richard W. Bell
Summary: Transitioning to minimal tillage and increased crop residue retention in an intensive rice-based cropping system in the Gangetic Plains of South Asia can significantly increase the accumulation of soil organic carbon (SOC) and total nitrogen (TN). Compared to conventional crop establishment practices, zero tillage, strip-tillage, and bed planting can more effectively sequester SOC and TN, leading to higher soil levels of SOC and TN.
Article
Biodiversity Conservation
Nolan J. T. Pearce, Isabelle Lavoie, Kathryn E. Thomas, Patricia A. Chambers, Adam G. Yates
Summary: This study investigated how stream communities respond to cumulative human impacts such as nutrient enrichment, showing that the effects of nutrient enrichment are conditional on upstream ecosystem conditions. Future assessments may need to consider the complexities related to environmental stressors when evaluating the impacts of human activities on stream ecosystems.
ECOLOGICAL INDICATORS
(2021)
Article
Soil Science
Jie Chen, Bin Jia, Shu Gang, Yawen Li, Fen-Can Li, Xiao Ming Mou, Yakov Kuzyakov, Xiao Gang Li
Summary: This study compares the effects of different plant communities on soil organic carbon, nitrogen, and phosphorus mineralization in an alpine meadow. The results show that under shrubs, the rates of nitrogen and phosphorus mineralization in soil are significantly higher, while the increase in organic carbon mineralization is smaller. Furthermore, the decoupling of organic carbon and nutrient mineralization is driven by microbial stoichiometry.
BIOLOGY AND FERTILITY OF SOILS
(2022)
Article
Environmental Sciences
Owen Fenton, Paul Rice, John. G. Murnane, Patrick Tuohy, Karen Daly
Summary: This study investigates the storage and potential release of phosphorus (P) from the underlying roadway material in agricultural landscapes. The results show that the soil component of roadway materials is a significant P source and storage component. It is suggested that steps should be taken to divert roadway runoff into fields and improve road infrastructure to minimize P buildup. Future research should examine P loads in runoff from different farm typologies and roadway material types.
FRONTIERS IN ENVIRONMENTAL SCIENCE
(2022)
Article
Soil Science
Petr Capek, Michal Choma, Karolina Tahovska, Jiri Kana, Jiri Kopacek, Hana Santruckova
Summary: Our study found that the capability of microbial community to reduce its demand for external nutrients is responsible for the difference between the predictions and observations. The active part of microbial community instantly recycled N from decaying part of microbial community and very likely utilized internal P sources (i.e. polyphosphates). The results suggest that N recycling from dead microbial biomass and the internal microbial P sources warrant further investigation.
Article
Environmental Sciences
Toshikazu Kizuka, Hidetoshi Mikami, Satoshi Kameyama, Satoru Ono, Hiroaki Suzuki
Summary: Re-wetting of agricultural areas reclaimed by draining peatlands may lead to nutrient leaching and downstream nutrient loads. This study assessed the risks of nutrient loading in naturally re-wetted agricultural areas in floodplain fens in northern Japan. The results showed that flooding increased the water flow and nutrient influx and outflux, with dissolved organic nitrogen and phosphorus being the main contributors to downstream nutrient loading.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Environmental Sciences
Jacob Coppolino, Kimber E. Munford, Merrin Macrae, Susan Glasauer
Summary: Losses of phosphorus from soil to surface waters in agricultural areas have been linked to substantial declines in water quality. Riparian wetlands have the potential to intercept phosphorus before it reaches waterways, but their capacity to buffer against downstream losses of P is poorly understood. This study investigated phosphorus dynamics during the spring thaw to summer period and found that reactive phosphorus and microbial biomass phosphorus increased with distance from the river. Temperature monitoring showed no freeze-thaw cycling in the wetland soil. Experimental studies demonstrated that multiple freeze-thaw cycles were necessary to increase the pool of reactive soil phosphorus.
FRONTIERS IN ENVIRONMENTAL SCIENCE
(2022)
Article
Ecology
Gregory B. Noe, Kathy Boomer, Jaimie L. Gillespie, Cliff R. Hupp, Mario Martin-Alciati, Kelly Floro, Edward R. Schenk, Amy Jacobs, Steve Strano
ECOLOGICAL ENGINEERING
(2019)
Review
Ecology
Edward R. Schenk, Frances O'Donnell, Abraham E. Springer, Lawrence E. Stevens
ECOLOGICAL ENGINEERING
(2020)
Article
Environmental Sciences
Hongqing Wang, Ken W. Krauss, Gregory B. Noe, Camille Stagg, Christopher M. Swarzenski, Jamie A. Duberstein, William H. Conner, Donald L. Deangelis
JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES
(2020)
Article
Ecology
Jennifer M. Cartwright, Kathleen A. Dwire, Zach Freed, Samantha J. Hammer, Blair McLaughlin, Louise W. Misztal, Edward R. Schenk, John R. Spence, Abraham E. Springer, Lawrence E. Stevens
FRONTIERS IN ECOLOGY AND THE ENVIRONMENT
(2020)
Review
Environmental Sciences
Gregory B. Noe, Matthew J. Cashman, Katie Skalak, Allen Gellis, Kristina G. Hopkins, Doug Moyer, James Webber, Adam Benthem, Kelly Maloney, John Brakebill, Andrew Sekellick, Mike Langland, Qian Zhang, Gary Shenk, Jeni Keisman, Cliff Hupp
WILEY INTERDISCIPLINARY REVIEWS-WATER
(2020)
Article
Ecology
Lawrence E. Stevens, Edward R. Schenk, Abraham E. Springer
Summary: The study discusses the classification of springs ecosystems, emphasizing the importance of site-specific source geomorphology. It presents a conceptual model and a dichotomous key for classification, achieving an 87.5% accuracy rate in identifying springs types.
ECOLOGICAL APPLICATIONS
(2021)
Article
Geosciences, Multidisciplinary
Ryan Porter, Taylor Joyal, Rebecca Beers, Joseph Loverich, Aubrey LaPlante, John Spruell, Ann Youberg, Edward Schenk, Peter R. Robichaud, Abraham E. Springer
FRONTIERS IN EARTH SCIENCE
(2021)
Article
Forestry
Gregory B. Noe, Norman A. Bourg, Ken W. Krauss, Jamie A. Duberstein, Cliff R. Hupp
Summary: The study evaluated the vegetation response of tidal freshwater forested wetlands along the Mattaponi and Pamunkey rivers in the Mid-Atlantic USA. Results showed downstream shifts in plant community composition, tree dominance, and tree growth as tidal influence increased. This highlights the complex interactions between river flow, salinity, and nutrient availability on the growth and composition of tidal freshwater forested wetlands.
Article
Environmental Sciences
G. B. Noe, K. G. Hopkins, P. R. Claggett, E. R. Schenk, M. J. Metes, L. Ahmed, T. R. Doody, C. R. Hupp
Summary: This study used dendrogeomorphology to measure long-term streambank erosion, floodplain deposition, and sediment fluxes in streams across the U.S. Mid-Atlantic. The results showed that geomorphic change and resulting sediment and nutrient fluxes were influenced by land use and watershed characteristics. The findings provide important insights into the balance of erosion and deposition in disturbed landscapes and the impact of geomorphic change on stream water quality and carbon sequestration.
ENVIRONMENTAL RESEARCH LETTERS
(2022)
Article
Environmental Sciences
Tyler Wagner, Paul McLaughlin, Kelly Smalling, Sara Breitmeyer, Stephanie Gordon, Gregory B. Noe
Summary: The study found that long-term monitoring at multiple sites is required to fully understand regional trends in chemical contaminant concentrations in rivers, while short-term monitoring periods are insufficient to detect these changes. Additionally, total estrogenicity may be a useful indicator.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Ecology
Hongqing Wang, Zhaohua Dai, Carl C. Trettin, Ken W. Krauss, Gregory B. Noe, Andrew J. Burton, Camille L. Stagg, Eric J. Ward
Summary: Tidal freshwater forested wetlands play a critical role in providing habitat for wildlife and sequestering carbon dioxide. However, the impacts of climate change, specifically saltwater intrusion caused by drought, can significantly affect carbon dynamics in these ecosystems.
ECOLOGICAL APPLICATIONS
(2022)
Article
Water Resources
Zachary J. Clifton, Matthew J. Cashman, Allen C. Gellis, Michelle P. Katoski, Lucas A. Nibert, Gregory B. Noe
Summary: This study used a sediment budget approach to determine the sources, storage, and delivery of sediment in the Smith Creek watershed. The results showed that streambanks and pastures were major sources of sediment. The study also indicated that the storage of sediment in the watershed may have been underestimated due to unaccounted geomorphic features. The findings provide a framework for managers to address the sediment problem in Smith Creek and similar tributaries to the Chesapeake Bay.
HYDROLOGICAL PROCESSES
(2022)
Article
Ecology
Hongqing Wang, Zhaohua Dai, Ken W. Krauss, Carl C. Trettin, Gregory B. Noe, Andrew J. Burton, Eric J. Ward
Summary: Emissions of methane and nitrous oxide from tidal freshwater forested wetlands are generally low, but the impacts of coastal droughts and drought-induced saltwater intrusion on these emissions are unclear.
ECOLOGICAL APPLICATIONS
(2023)
Article
Environmental Sciences
D. E. Kroes, G. B. Noe, C. R. Hupp, T. R. Doody, P. A. Bukaveckas
Summary: The rise of sea levels is affecting coastal rivers by increasing water levels and propagating tides inland. Understanding the transition from river systems to tidal estuaries is crucial for predicting the effects of sea level rise on ecosystems and landforms.
ESTUARIES AND COASTS
(2023)