Article
Environmental Sciences
Xin Yu, Jian Shen, Jiabi Du
Summary: This study presents an inverse method to estimate bacterial loading from a watershed by using field-measured bacterial concentrations and numerical model-calculated residence time. The approach takes into account seasonal and interannual variations in hydrodynamics, showing high consistency with known input loadings in numerical experiments. It can be used to cross-check watershed models and assess changes in watershed conditions with sparse observational data, demonstrating its reliability for water quality management.
MARINE ENVIRONMENTAL RESEARCH
(2021)
Article
Environmental Sciences
Kan Ding, Jianming Deng, Boqiang Qin
Summary: Water residence time is an important factor affecting lake nutrient processes. In regions without lake inflow or outflow observations, information on water residence time is often lacking or outdated. Recent advancements in global precipitation and evapotranspiration products provide a way to estimate lake water residence time at large scales using the water balance method. This approach shows promising results and could be applied to large-scale studies requiring accurate estimation of water residence time.
WATER RESOURCES RESEARCH
(2023)
Article
Multidisciplinary Sciences
Jing Zhou, Guodong Liu, Yuchuan Meng, ChengCheng Xia, Ke Chen, Yu Chen
Summary: This study investigated the mean residence time (MRT) in the upper Tuojiang River catchment using oxygen and hydrogen isotopic compositions, finding that topography and catchment area significantly influence MRT, with the topographic index being a reliable parameter for estimating MRT. Additionally, the study discovered that paddy fields may have a greater impact on MRT compared to other land use types in irrigation-dominated catchments, providing a basis for simulating MRT in the future.
SCIENTIFIC REPORTS
(2021)
Article
Engineering, Marine
Viyaktha Hithaishi Hewageegana, Maitane Olabarrieta, Jose M. Gonzalez-Ondina
Summary: In this study, the main processes affecting the residence time of the Caloosahatchee River Estuary were identified and analyzed. The residence time showed a strong seasonality driven by the river discharge, and was influenced by wind velocity and direction. Water density gradient-induced circulation and particle buoyancy also played a role in determining the residence time. The outcomes of this study have implications for understanding residence time in other estuaries and improving water quality management.
JOURNAL OF MARINE SCIENCE AND ENGINEERING
(2023)
Article
Engineering, Civil
Louis Boansi Okofo, Melvin-Guy Adonadaga, Marion Martienssen
Summary: This study uses tracers and numerical modeling to determine the residence times, recharge patterns, and groundwater flow system of the granitic aquifer in the investigated area. The findings are valuable for water resource management and aquifer resource planning.
JOURNAL OF HYDROLOGY
(2022)
Article
Geosciences, Multidisciplinary
Vincent Bailly-Comte, Severin Pistre
Summary: Dye tracing is an efficient method for spring watershed delineation and pollution migration assessment. This study aims to develop a simple approach to simulate large-scale transport processes in aquifers by considering the linear relationship between dispersivity and scale. The analysis of 583 tracer recoveries validates an inverse relationship between arrival time and peak concentration, showing the practical applications of this methodology in generalizing tracer test results under various flow conditions.
HYDROGEOLOGY JOURNAL
(2021)
Article
Marine & Freshwater Biology
Peng Cheng, Aijun Wang, Jiezhong Wu, Yihui Lin, Jixin Chen, Nengwang Chen
Summary: Water transport time scales are important for assessing substance renewal in coastal embayments. A study on Xiamen Bay showed that tidal residual flow is the main driver of water renewal, with different regions in the bay exhibiting variations in water exchange characteristics. Estimations of residence and influence times provide insights into the renewal processes within coastal embayments.
ESTUARINE COASTAL AND SHELF SCIENCE
(2021)
Article
Chemistry, Analytical
Daniele Borzelli, Stefano Pastorelli, Andrea d'Avella, Laura Gastaldi
Summary: This study presents a biomechanical model-based approach to estimate limb stiffness of a multi-joint, multi-muscle system from muscle activations. By projecting the muscle activation vector onto the null space of the linear mapping, the proposed method approximates the generated stiffness. The model provides a good approximation that can be directly implemented in wearable myoelectric controlled devices without additional calibrations.
Article
Automation & Control Systems
Seyedhamed Seyedipour, Hadi Nobahari, Maria Prandini
Summary: This paper presents an approach to mid-term probabilistic conflict detection between two aircraft flying at the same altitude. The proposed method analytically estimates the conflict probability, considering a fully correlated wind field. The method uses a two-step approach to compute the mean and covariance of the aircraft relative position and estimate the conflict probability. Numerical results demonstrate the effectiveness of the method compared to competitors and investigate its sensitivity to parameters.
JOURNAL OF THE FRANKLIN INSTITUTE-ENGINEERING AND APPLIED MATHEMATICS
(2022)
Article
Environmental Sciences
Stamatis C. Batelis, Ioannis Nalbantis
Summary: The hydrological impact of large-scale forest fires in a large basin was investigated on both a daily and an hourly basis. The study found that for accurate streamflow prediction, a 20% post-fire increase in CN was necessary for the daily time step while the CN for burnt areas remained above 90 for the hourly time step. The post-fire trend lines of CN for the two-time steps showed statistically equal slopes.
Article
Environmental Sciences
Andrea L. Popp, Alvaro Pardo-Alvarez, Oliver S. Schilling, Andreas Scheidegger, Stephanie Musy, Morgan Peel, Philip Brunner, Roland Purtschert, Daniel Hunkeler, Rolf Kipfer
Summary: This study introduces a new approach to understand the relationship between groundwater mixing ratios and travel times using in-situ noble gas analyses. The results from a groundwater pumping test conducted in Switzerland demonstrate the importance of interpreting age dating tracers and the influence of different water sources on estimated travel times.
WATER RESOURCES RESEARCH
(2021)
Article
Development Studies
Yosri Nasr Ahmed, Delin Huang, Christopher Belford, Victor Shaker, Naglaa Ahmed Mohamed Abdelrahaman
Summary: This study assesses the economic impacts of climate change on Egyptian agriculture, revealing potential decreases in production, increases in prices, and reduced agricultural income. Therefore, measures such as improving water resource utilization efficiency and developing climate-resilient crop varieties are recommended to address the challenges.
CLIMATE AND DEVELOPMENT
(2021)
Article
Environmental Sciences
Yifan Ding, Xuanpeng Zhao, Ji Luo, Guoyuan Wu, Akula Venkatram
Summary: Multiple studies have shown that exposure to vehicle emissions is associated with several harmful health effects. However, there are limited methods to measure exposure to emissions from idling or slowly moving vehicles in atmospheric flow and turbulence, which are common when people are waiting for transportation. A field study was conducted to collect tracer concentration data near the tailpipe of a vehicle under idling and starting conditions. The analysis revealed that the measurements were consistent with a dispersion model that considers micrometeorological variables and plume rise. These findings suggest that individuals located a few meters away from an idling vehicle may be exposed to NO2 levels exceeding the 1-hour standard of 100 ppb.
ATMOSPHERIC POLLUTION RESEARCH
(2023)
Article
Environmental Sciences
N. Simon, O. Bour, N. Lavenant, G. Porel, B. Nauleau, B. Pouladi, L. Longuevergne, A. Crave
Summary: This study introduces two interpretation methods of active-DTS experiments for estimating thermal conductivities and groundwater fluxes in sediments. These methods rely on temperature measurements along a heated fiber-optic cable and consider heat transfer processes through the cable and porous media. The experimental validation demonstrates high accuracy of groundwater flux estimates and the complementary nature of both methods, making active-DTS experiments promising for various subsurface applications.
WATER RESOURCES RESEARCH
(2021)
Article
Multidisciplinary Sciences
Kai I. Pacey, Ciemon F. Caballes, Morgan S. Pratchett
Summary: Coral reefs are facing significant threats due to human activities, and extractive industries utilizing coral reef resources are under pressure to justify their environmental impact. In Australia, live scleractinian corals are harvested annually for the marine aquarium trade, but there is limited information on coral biomass in targeted stocks. This study establishes size-weight relationships for heavily targeted coral species in Australia, bridging the gap between catch reporting and stock assessments.
SCIENTIFIC REPORTS
(2023)
Article
Biodiversity Conservation
Remy R. Okazaki, Erica K. Towle, Ruben van Hooidonk, Carolina Mor, Rivah N. Winter, Alan M. Piggot, Ross Cunning, Andrew C. Baker, James S. Klaus, Peter K. Swart, Chris Langdon
GLOBAL CHANGE BIOLOGY
(2017)
Article
Ecology
Erica K. Towle, Ana M. Palacio-Castro, Andrew C. Baker, Chris Langdon
REGIONAL STUDIES IN MARINE SCIENCE
(2017)
Article
Multidisciplinary Sciences
Tyler Cyronak, Andreas J. Andersson, Chris Langdon, Rebecca Albright, Nicholas R. Bates, Ken Caldeira, Renee Carlton, Jorge E. Corredor, Rob B. Dunbar, Ian Enochs, Jonathan Erez, Bradley D. Eyre, Jean-Pierre Gattuso, Dwight Gledhill, Hajime Kayanne, David I. Kline, David A. Koweek, Coulson Lantz, Boaz Lazar, Derek Manzello, Ashly McMahon, Melissa Melendez, Heather N. Page, Isaac R. Santos, Kai G. Schulz, Emily Shaw, Jacob Silverman, Atsushi Suzuki, Lida Teneva, Atsushi Watanabe, Shoji Yamamoto
Article
Limnology
Chris Langdon, Rebecca Albright, Andrew C. Baker, Paul Jones
LIMNOLOGY AND OCEANOGRAPHY
(2018)
Editorial Material
Ecology
Jonathan S. Stark, Chris Langdon
NATURE ECOLOGY & EVOLUTION
(2019)
Article
Multidisciplinary Sciences
Wei-Jun Cai, Yuan-Yuan Xu, Richard A. Feely, Rik Wanninkhof, Bror Jonsson, Simone R. Alin, Leticia Barbero, Jessica N. Cross, Kumiko Azetsu-Scott, Andrea J. Fassbender, Brendan R. Carter, Li-Qing Jiang, Pierre Pepin, Baoshan Chen, Najid Hussain, Janet J. Reimer, Liang Xue, Joseph E. Salisbury, Jose Martin Hernandez-Ayon, Chris Langdon, Qian Li, Adrienne J. Sutton, Chen-Tung A. Chen, Dwight K. Gledhill
NATURE COMMUNICATIONS
(2020)
Article
Oceanography
Melissa Melendez, Joseph Salisbury, Dwight Gledhill, Chris Langdon, Julio M. Morell, Derek Manzello, Sylvia Rodriguez-Abudo, Sylvia Musielewicz, Adrienne Sutton
JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS
(2020)
Article
Environmental Sciences
Graham Kolodziej, Michael S. Studivan, Arthur C. R. Gleason, Chris Langdon, Ian C. Enochs, Derek P. Manzello
Summary: Since 2014, stony coral tissue loss disease has spread throughout Florida's coral reef tract and the Caribbean, reaching the upper Florida Keys by 2016. Despite the presence of the disease at Cheeca Rocks, the impact on coral cover and community structure has been relatively low compared to other sites on Florida's coral reef tract, highlighting the potential role of this site in coral resilience.
FRONTIERS IN MARINE SCIENCE
(2021)
Article
Limnology
Melissa Melendez, Joseph Salisbury, Dwight Gledhill, Chris Langdon, Julio M. Morell, Derek Manzello, Adrienne Sutton
Summary: The study presents a quantitative approach to analyze the metabolic processes of coral reef ecosystems and demonstrates the impacts of ocean acidification using long-term observational data. The dominant metabolic processes were net respiration and net dissolution, and the net ecosystem calcification rates were found to be relatively low. The results suggest that net ecosystem production plays a significant role in net ecosystem calcification.
LIMNOLOGY AND OCEANOGRAPHY
(2022)
Article
Ecology
Madeline L. Kaufman, Martine D'Alessandro, Chris Langdon, Diego Lirman
Summary: Research shows that factors such as genotype, lesion area, colony size, and tissue, chlorophyll a, lipid, and symbiont densities influence the recovery capacity of staghorn corals, with smaller lesion areas, lower tissue densities, and higher chlorophyll a densities promoting faster healing. Differences in healing rate among genotypes are significant, and there is evidence of a tradeoff between growth and wound recovery in corals.
MARINE ECOLOGY PROGRESS SERIES
(2021)
Article
Ecology
Christopher D. Stallings, Ileana M. Freytes-Ortiz, Martina M. Plafcan, Chris Langdon
Summary: Mussels use their shells for protection and can thicken or grow in response to predator cues, with elevated pCO(2) having negative effects on their morphology and physiology. However, the inducible defenses of mussels are not affected by elevated pCO(2). The study found that mussels exposed to elevated pCO(2) exhibited greater growth in shell depth, resulting in rounder shapes, but this did not affect average crab handling times.
MARINE ECOLOGY PROGRESS SERIES
(2021)
Review
Environmental Sciences
Marilaure Gregoire, Veronique Garcon, Hernan Garcia, Denise Breitburg, Kirsten Isensee, Andreas Oschlies, Maciej Telszewski, Alexander Barth, Henry C. Bittig, Jacob Carstensen, Thierry Carval, Fei Chai, Francisco Chavez, Daniel Conley, Laurent Coppola, Sean Crowe, Kim Currie, Minhan Dai, Bruno Deflandre, Boris Dewitte, Robert Diaz, Emilio Garcia-Robledo, Denis Gilbert, Alessandra Giorgetti, Ronnie Glud, Dimitri Gutierrez, Shigeki Hosoda, Masao Ishii, Gil Jacinto, Chris Langdon, Siv K. Lauvset, Lisa A. Levin, Karin E. Limburg, Hela Mehrtens, Ivonne Montes, Wajih Naqvi, Aurelien Paulmier, Benjamin Pfeil, Grant Pitcher, Sylvie Pouliquen, Nancy Rabalais, Christophe Rabouille, Virginie Recape, Michael Roman, Kenneth Rose, Daniel Rudnick, Jodie Rummer, Catherine Schmechtig, Sunke Schmidtko, Brad Seibel, Caroline Slomp, U. Rashid Sumalia, Toste Tanhua, Virginie Thierry, Hiroshi Uchida, Rik Wanninkhof, Moriaki Yasuhara
Summary: GO(2)DAT aims to establish a global Ocean Oxygen Database and ATlas to support advanced data analysis and biogeochemical model development, enhance understanding and forecasting capabilities of ocean O-2 changes and deoxygenation trends, and drive the development of climate and ocean health indicators.
FRONTIERS IN MARINE SCIENCE
(2021)
Article
Environmental Sciences
Li-Qing Jiang, Denis Pierrot, Rik Wanninkhof, Richard A. Feely, Bronte Tilbrook, Simone Alin, Leticia Barbero, Robert H. Byrne, Brendan R. Carter, Andrew G. Dickson, Jean-Pierre Gattuso, Dana Greeley, Mario Hoppema, Matthew P. Humphreys, Johannes Karstensen, Nico Lange, Siv K. Lauvset, Ernie R. Lewis, Are Olsen, Fiz F. Perez, Christopher Sabine, Jonathan D. Sharp, Toste Tanhua, Thomas W. Trull, Anton Velo, Andrew J. Allegra, Paul Barker, Eugene Burger, Wei-Jun Cai, Chen-Tung A. Chen, Jessica Cross, Hernan Garcia, Jose Martin Hernandez-Ayon, Xinping Hu, Alex Kozyr, Chris Langdon, Kitack Lee, Joe Salisbury, Zhaohui Aleck Wang, Liang Xue
Summary: Effective data management is crucial for oceanographic research, and this article introduces new and updated best practice data standards for discrete chemical oceanographic observations. These standards cover column header abbreviations, quality control flags, missing value indicators, and standardized calculation of certain properties. The aim is to improve current practices, promote international usage, and facilitate data sharing and permanent archiving for better research in ocean biogeochemistry.
FRONTIERS IN MARINE SCIENCE
(2022)
Article
Multidisciplinary Sciences
Li-Qing Jiang, Alex Kozyr, John M. Relph, Errol I. Ronje, Linus Kamb, Eugene Burger, Jonathan Myer, Liem Nguyen, Krisa M. Arzayus, Tim Boyer, Scott Cross, Hernan Garcia, Patrick Hogan, Kirsten Larsen, A. Rost Parsons
Summary: OCADS is a data management system that manages various ocean carbon and acidification data, including observations and experimental results. It aims to provide data, information, products, and services related to ocean carbon and acidification, and adopts a customer-centric approach to improve its data management practices.
Article
Environmental Sciences
Emma Pontes, Chris Langdon, Fuad A. Al-Horani
Summary: Climate change and increasing sea surface temperature have worsened ocean deoxygenation, affecting the metabolic response and tolerance range of Caribbean coral species and their algal symbionts. This study found that they exhibited varying degrees of tolerance to hypoxia, providing insights into the community composition of reefs under changing climate and guiding restoration efforts.
FRONTIERS IN MARINE SCIENCE
(2023)