Article
Environmental Sciences
Weichao Guo, Mohammad Safeeq, Hongyan Liu, Xiuchen Wu, Guotao Cui, Qin Ma, Michael L. Goulden, Mats Lindeskog, Roger C. Bales
Summary: Feedbacks between the water and carbon cycles in semi-arid mountain ecosystems can introduce uncertainties into carbon storage projections. This study found that warming reduces carbon storage due to water limitations on growth and enhanced soil respiration, but CO2 fertilization and improved water-use efficiency offset this loss. Additionally, accounting for precipitation gradients and actual water storage is important in modeling carbon-water interactions.
GLOBAL BIOGEOCHEMICAL CYCLES
(2022)
Article
Chemistry, Multidisciplinary
Bingbing Wang, Xiangjie Lu, Sha Tao, Yanzhao Ren, Wanlin Gao, Xinliang Liu, Bangjie Yang
Summary: This research discusses the preparation of CO2 micro-nanobubble water using the dissolved gas release method, and the optimization process is conducted using the response surface methodology. The results show that the CO2 content in the MNB water prepared under the optimal parameters is 7.64 mg/L, with a pH of 4.08 and a particle size of 255.5 nm.
APPLIED SCIENCES-BASEL
(2021)
Article
Chemistry, Analytical
Sanne M. de Smit, Jelle J. H. Langedijk, Lennert C. A. van Haalen, Shih Hsuan Lin, Johannes H. Bitter, David P. B. T. B. Strik
Summary: We have developed a technique that uses microsensors to measure pH and H2 gradients during microbial electrosynthesis. The use of 3D electrodes in (bio)electrochemical systems can lead to gradients from the bulk conditions into the electrode, which significantly affect the electrode's performance. We have also measured local oxidation-reduction potential and electric field potential throughout the 3D porous electrodes. To overcome interference caused by the electric field, we have validated a method that corrects the pH measurements using the electric potential measured by another microsensor. This technique is useful for studying electrode design, reactor engineering, measuring gradients in electroactive biofilms, and flow dynamics in and around 3D porous electrodes of (bio)electrochemical systems.
ANALYTICAL CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Yingli Shi, Chun Fang Wen, Xuefeng Wu, Jia Yue Zhao, Fangxin Mao, Peng Fei Liu, Hua Gui Yang
Summary: The electrochemical reduction of CO2 offers a renewable approach to address the carbon cycle and global energy issue. In this study, a porous vegetable sponge-like bismuth oxide material was developed for the selective electroreduction of CO2 to formate. The catalyst showed high formate yield and stability.
MATERIALS CHEMISTRY FRONTIERS
(2022)
Review
Chemistry, Physical
Xueying Cao, Dongxing Tan, Bari Wulan, K. S. Hui, K. N. Hui, Jintao Zhang
Summary: The electrocatalytic reduction of carbon dioxide into organic fuels and feedstocks is essential for implementing the sustainable carbon cycle. Rational design of advanced electrocatalysts and a deep understanding of reaction mechanisms are crucial for complex reactions. In situ and operando techniques with real-time monitoring provide insight into the dynamic evolution of electrocatalysts' structures.
Article
Multidisciplinary Sciences
David M. Durieux, Kevin T. Du Clos, David B. Lewis, Brad J. Gemmell
Summary: The upside-down jellyfish Cassiopea sp. plays a significant role in water column mixing within its shallow natural habitat; it continuously pumps water vertically to create a significant contribution to mixing, resulting in turnover of the water column every 15 minutes at median population density. Additionally, the release of nutrient-rich benthic porewater further emphasizes Cassiopea sp.'s role as an ecosystem engineer in mangrove habitats.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2021)
Article
Environmental Sciences
Vito Romaniello, Claudia Spinetti, Malvina Silvestri, Maria Fabrizia Buongiorno
Summary: A simple methodology for CO2 emission retrieval using PRISMA data has been developed and tested, showing potential for gas retrieval at a local spatial scale, with satisfactory application limits for medium/strong emissions and reflectance greater than 0.1 over soils.
Article
Biodiversity Conservation
Estefania Munoz, Ingrid Chanca, Carlos A. Sierra
Summary: The response of terrestrial ecosystems to increased CO2 concentrations is not fully understood. Although there is consensus that increased CO2 affects instant processes, such as photosynthesis, uncertainties remain regarding the fate of assimilated carbon. This study proposes the use of transit time distributions to assess the fate of newly assimilated carbon and calls for its adoption to improve our understanding of ecosystem responses to increased CO2.
GLOBAL CHANGE BIOLOGY
(2023)
Article
Chemistry, Physical
Yue-Yi Wang, Jin-Long Zhu, Nan Li, Jun-Feng Shi, Jian-Hua Tang, Ding-Xiang Yan, Zhong-Ming Li
Summary: In this study, carbon aerogel microspheres with in-situ mineralized TiO2 were successfully prepared via a sol-gel transition and calcination process. The resulting hybrid material exhibited excellent microwave absorption performance and impedance matching performance, as well as a broad effective absorption bandwidth.
Article
Engineering, Marine
Stephanie Mangan, Andrew M. Lohrer, Simon F. Thrush, Joanne I. Ellis, Conrad A. Pilditch
Summary: Anthropogenic increases in nutrient delivery have fundamentally altered the biogeochemical cycling in the marine coastal zone, with potential ecological shifts. Long-term enrichment and ecological complexity have limited our ability to effectively manage and prevent these changes.
JOURNAL OF MARINE SCIENCE AND ENGINEERING
(2022)
Article
Environmental Sciences
Chuancheng Fu, Yuan Li, Chen Tu, Jian Hu, Lin Zeng, Li Qian, Peter Christie, Yongming Luo
Summary: This study investigates the concentrations of priority-controlled trace elements (TEs) in blue carbon (BC) ecosystems in China and identifies the factors influencing their accumulation. The results show that BC soils have higher concentrations of anthropogenic TEs compared to reference soils due to trapping and binding capacities. The accumulation of TEs in BC soils has increased over the past century but reversed after 2000 due to socioeconomic reform and tightened environmental regulations. BCEs are estimated to filter a significant percentage of TEs from industrial wastewaters. Protecting and restoring BCEs can help achieve sustainable development goals in coastal areas.
ENVIRONMENT INTERNATIONAL
(2023)
Article
Chemistry, Multidisciplinary
Wei-Hang Xie, Xiangyang Yao, Heng Li, Hong-Ru Li, Liang-Nian He
Summary: A biomass-based nitrogen-rich porous carbon material was prepared from soybean dregs waste and exhibited high CO2 adsorption capacity. The nitrogen content reached up to 4%, with different forms of nitrogen-containing groups in the carbon skeleton. The captured CO2 was activated and converted into valuable chemicals in mild conditions, demonstrating the efficient utilization of both solid waste and CO2.
Article
Biodiversity Conservation
Ludovic Pascal, Joannie Cool, Philippe Archambault, Piero Calosi, Andre L. R. Cuenca, Alfonso O. Mucci, Gwenaelle Chaillou
Summary: The declining O-2 concentrations in the global ocean have led to changes in benthic communities and sediment biogeochemistry. The authors found that below an O-2 threshold of approximately 63 mu M, there were significant shifts in macrobenthic community assemblages and bioturbation rates decreased. This study highlights the importance of bioturbating species in mitigating the biogeochemical consequences of hypoxia and provides insights for predicting future changes in benthic ecosystems.
GLOBAL CHANGE BIOLOGY
(2023)
Article
Agricultural Engineering
Kai -Kai Wu, Lei Zhao, Xiao-Chuan Zheng, Zhong-Fang Sun, Zi-Han Wang, Chuan Chen, De-Feng Xing, Shan -Shan Yang, Nan-Qi Ren
Summary: This study developed a new dual-membrane aerated biofilm reactor (dMBfR) that improved the efficiency of biogas upgrading, achieving a maximum methane purity of 97.6%, acetate production rate of 34.5 mmol L-1d-1, and H2 and CO2 utilization ratios of 96.5% and 96.3%, respectively.
BIORESOURCE TECHNOLOGY
(2023)
Article
Chemistry, Inorganic & Nuclear
Xiao Xu, Zhentao Li, Huilin Huang, Xu Jing, Chunying Duan
Summary: The increase of carbon dioxide in the atmosphere has led to the greenhouse effect. Therefore, it is crucial to capture and convert carbon dioxide into valuable chemical products to reduce its concentration. Researchers have assembled a novel copper-based metal framework, Cu-TSP, from ligands containing thiourea groups. This material can efficiently catalyze the synthesis of 2-oxazolidinones from propargylic amines and carbon dioxide. The recyclability and high conversion rates demonstrate the broad potential applications of this designed material as a pi-activated catalyst in the chemical industry.
INORGANIC CHEMISTRY FRONTIERS
(2022)
Article
Environmental Sciences
James W. Fourqurean, Sarah A. Manuel, Kathryn A. Coates, Simieon C. Massey, W. Judson Kenworthy
ESTUARIES AND COASTS
(2019)
Article
Environmental Sciences
Sara S. Wilson, Bradley T. Furman, Margaret O. Hall, James W. Fourqurean
ESTUARIES AND COASTS
(2020)
Correction
Multidisciplinary Sciences
Peter I. Macreadie, Andrea Anton, John A. Raven, Nicola Beaumont, Rod M. Connolly, Daniel A. Friess, Jeffrey J. Kelleway, Hilary Kennedy, Tomohiro Kuwae, Paul S. Lavery, Catherine E. Lovelock, Dan A. Smale, Eugenia T. Apostolaki, Trisha B. Atwood, Jeff Baldock, Thomas S. Bianchi, Gail L. Chmura, Bradley D. Eyre, James W. Fourqurean, Jason M. Hall-Spencer, Mark Huxham, Iris E. Hendriks, Dorte Krause-Jensen, Dan Laffoley, Tiziana Luisetti, Nuria Marba, Pere Masque, Karen J. McGlathery, J. Patrick Megonigal, Daniel Murdiyarso, Bayden D. Russell, Rui Santos, Oscar Serrano, Brian R. Silliman, Kenta Watanabe, Carlos M. Duarte
NATURE COMMUNICATIONS
(2019)
Editorial Material
Environmental Sciences
Anna Wachnicka, Anna R. Armitage, Ian Zink, Joan Browder, James W. Fourqurean
ESTUARIES AND COASTS
(2020)
Article
Environmental Sciences
Jason L. Howard, Christian C. Lopes, Sara S. Wilson, Vicki McGee-Absten, Claudia I. Carrion, James W. Fourqurean
Summary: The study tested the paradigm for understanding the accumulation of organic carbon in vegetated coastal blue carbon habitats and examined the lability of soil organic carbon, finding that burial does not necessarily enhance C(org) storage and that soil C stores are weakly correlated with seagrass biomass at the landscape scale.
ESTUARIES AND COASTS
(2021)
Article
Limnology
Bryce R. Van Dam, Christian C. Lopes, Pierre Polsenaere, Rene M. Price, Anna Rutgersson, James W. Fourqurean
Summary: Subtropical seagrass meadows play a significant role in the coastal carbon cycle, with the first direct measurements of evaporation and CO2 flux over one such meadow near Bob Allen Keys, Florida revealing that CO2 emissions were 36% higher during the day than at night. Additionally, evaporation rates were found to be significantly higher than precipitation, leading to a potential increase in salinity and impacting seagrass health. The study also highlighted the importance of factors such as water temperature, air-water temperature gradient, and wind shear in influencing air-water CO2 exchange over these ecosystems.
LIMNOLOGY AND OCEANOGRAPHY
(2021)
Article
Environmental Sciences
William C. Dennison, Matthew E. S. Bracken, Maria Brown, John F. Bruno, James T. Carlton, Robert C. Carpenter, Tim J. B. Carruthers, Megan N. Dethier, Carlos M. Duarte, Thomas R. Fisher, James W. Fourqurean, Richard K. Grosberg, Leila J. Hamdan, Ken L. Heck, Dan J. Howard, A. Randall Hughes, Brent B. Hughes, Gary A. Kendrick, W. Judson Kenworthy, Frank Mars, C. Peter McRoy, Rosamond L. Naylor, Bruce Nyden, John C. Ogden, Suzanne Olyarnik, Robert J. Orth, Frederick T. Short, Cascade J. B. Sorte, John J. Stachowicz, Donald R. Strong, Christine Sur, Michelle Waycott
Summary: Susan Lynn Williams was a respected scientist in the field of marine ecology, whose research findings were widely applied to the conservation of marine ecosystems. She exhibited outstanding academic achievements and leadership abilities, excelling in scientific discovery, integration, conservation, and teaching.
ESTUARIES AND COASTS
(2021)
Article
Ecology
Robert J. Nowicki, Jordan A. Thomson, James W. Fourqurean, Aaron J. Wirsing, Michael R. Heithaus
Summary: Extreme climatic events and predator removal are significant stressors to ecosystems, and their interactions can exacerbate effects. Simulating predator loss effects on herbivore behaviors can intensify ecosystem responses to extreme events, promoting tropicalization even without species range shifts.
JOURNAL OF ANIMAL ECOLOGY
(2021)
Article
Environmental Sciences
Bryce Van Dam, Pierre Polsenaere, Aylin Barreras-Apodaca, Christian Lopes, Zulia Sanchez-Mejia, Tatsuki Tokoro, Tomohiro Kuwae, Lucia Gutierrez Loza, Anna Rutgersson, James Fourqurean, Helmuth Thomas
Summary: Coastal vegetated habitats such as seagrass meadows play a crucial role in mitigating anthropogenic carbon emissions by sequestering CO2 as blue carbon. This study highlights the complex interactions between air-water CO2 exchange and organic carbon storage in seagrass meadows, with a focus on global scale patterns and physical drivers influencing CO2 fluxes. The findings underscore the need for a comprehensive approach to carbon assessments in coastal ecosystems, taking into account both biological and physical factors.
GLOBAL BIOGEOCHEMICAL CYCLES
(2021)
Article
Engineering, Marine
Michael S. Owens, Stephen P. Kelly, Thomas A. Frankovich, David T. Rudnick, James W. Fourqurean, Jeffrey C. Cornwell
Summary: The study estimated the net exchange of nitrogen and phosphorus species in estuarine lakes, revealing high efflux of NH4+ in dark conditions and significantly decreased efflux in light conditions. The presence of Chara hornemannii Wallman was found to have a large impact on NH4+ efflux, and it is expected that increased freshwater flow from the Everglades will influence NH4+ release in lakes.
JOURNAL OF MARINE SCIENCE AND ENGINEERING
(2021)
Article
Multidisciplinary Sciences
Bryce R. Van Dam, Mary A. Zeller, Christian Lopes, Ashley R. Smyth, Michael E. Boettcher, Christopher L. Osburn, Tristan Zimmerman, Daniel Proefrock, James W. Fourqurean, Helmuth Thomas
Summary: Long-term Blue Carbon burial in seagrass meadows is influenced by other carbon and alkalinity exchanges, with ecosystem calcification-induced CO2 emissions being the main contributor. Overestimation of net carbon sequestration potential may occur if these emissions are not taken into account.
Article
Environmental Sciences
H. Kennedy, J. F. Pages, D. Lagomasino, A. Arias-Ortiz, P. Colarusso, J. W. Fourqurean, M. N. Githaiga, J. L. Howard, D. Krause-Jensen, T. Kuwae, P. S. Lavery, P. Macreadie, N. Marba, P. Masque, I Mazarrasa, T. Miyajima, O. Serrano, C. M. Duarte
Summary: This study examined the drivers of organic carbon stocks in seagrass meadows globally. The species identity was found to be an important factor influencing soil organic carbon stocks, with key species traits including leaf number, belowground biomass, leaf lifespan, and aboveground biomass. The revised estimate of the global average soil organic carbon stock to a depth of 20 cm is 15.4 Mg C ha(-1), and the largest stocks were recorded in Mediterranean seagrass meadows.
GLOBAL BIOGEOCHEMICAL CYCLES
(2022)
Article
Environmental Sciences
Johannes R. Krause, Christian C. Lopes, Sara S. Wilson, Joseph N. Boyer, Henry O. Briceno, James W. Fourqurean
Summary: Although seagrass ecosystems globally decline due to human impacts, the Florida Keys has maintained stable benthic communities over the past 25 years. However, loss of the climax seagrass Thalassia testudinum has been observed in the Florida Keys National Marine Sanctuary, with no or partial recovery. Nutrient-enriched nearshore sites show a shift towards Halodule wrightii meadows, while major hurricanes have caused almost complete loss of seagrass meadows at offshore sites. This study highlights the importance of long-term monitoring programs in understanding benthic community trajectories and informing future seagrass conservation efforts.
ESTUARIES AND COASTS
(2023)
Article
Environmental Sciences
James W. Fourqurean, Justin E. Campbell, O. Kennedy Rhoades, Calvin J. Munson, Johannes R. Krause, Andrew H. Altieri, James G. Douglass, Kenneth L. Heck, Valerie J. Paul, Anna R. Armitage, Savanna C. Barry, Enrique Bethel, Lindsey Christ, Marjolijn J. A. Christianen, Grace Dodillet, Katrina Dutton, Thomas K. Frazer, Bethany M. Gaffey, Rachael Glazner, Janelle A. Goeke, Rancel Grana-Valdes, Olivier A. A. Kramer, Samantha T. Linhardt, Charles W. Martin, Isis Gabriela Martinez Lopez, Ashley M. McDonald, Vivienne A. Main, Sarah A. Manuel, Candela Marco-Mendez, Duncan A. O'Brien, Owen O'Shea, Christopher J. Patrick, Clare Peabody, Laura K. Reynolds, Alex Rodriguez, Lucia M. Rodriguez Bravo, Amanda Sang, Yvonne Sawall, Fee O. H. Smulders, Jamie E. Thompson, Brigitta van Tussenbroek, William L. Wied, Sara S. Wilson
Summary: The organic carbon stored in seagrass meadows is globally significant and could be relevant in strategies to mitigate increasing CO2 concentration in the atmosphere. Seagrass abundance is a good predictor of the soil organic carbon stocks, and the relative availability of nutrients N and P also influences carbon storage. Nutrient availability and eutrophication are likely to exert a strong influence on carbon storage in seagrass meadows.
ESTUARIES AND COASTS
(2023)
Article
Ecology
Bryce R. Van Dam, Christian Lopes, Christopher L. Osburn, James W. Fourqurean