Article
Environmental Sciences
Larissa Souza Passos, Eryka Costa de Almeida, Alexandre Villela, Adilson Nunes Fernandes, Marcelo Manzi Marinho, Levy Carvalho Gomes, Ernani Pinto
Summary: This study assessed the pollution extent of a crucial public water supply reservoir in southeastern Brazil. The findings revealed high concentrations of cyanobacteria and cyanotoxins in the reservoir, posing a significant ecological risk to aquatic life. Additionally, the analysis showed that levels of metals, metalloids, and fecal bacteria were below the maximum permitted limit according to Brazilian legislation.
ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
(2022)
Article
Biodiversity Conservation
Sanjina Upadhyay Staehr, Dimitry Van der Zande, Peter A. U. Staehr, Stiig Markager
Summary: Satellite and in situ measurements showed similar trends in chlorophyll concentrations, but significant differences were observed in shallow coastal waters where satellites tended to overestimate chlorophyll by 2-4 fold. Despite the advantages of satellites in temporal and spatial coverage, they cannot be used as a standalone technique for long-term assessment of chlorophyll and require validation and correction with in situ measurements.
ECOLOGICAL INDICATORS
(2022)
Article
Environmental Sciences
Gerald Schernewski, Rene Friedland, Simon Paysen, Martynas Bucas, Sven Dahlke, Mario von Weber
Summary: We examine the water quality development of the Oder/Szczecin Lagoon in the southern Baltic Sea region and the role of macrophytes through historical and recent monitoring data, as well as modeling. The system has experienced eutrophication for centuries and remains naturally eutrophic. Despite a decrease in external nutrient loads, the system is still in a eutrophic state due to limitations in light and nitrogen for primary production. Our study suggests that the historical maximum macrophyte coverage in the lagoon area is 36%. However, achieving the ecological targets set by the European Water Framework Directive for macrophyte coverage seems overly ambitious and not realistic.
FRONTIERS IN MARINE SCIENCE
(2023)
Article
Multidisciplinary Sciences
B. B. Cael, Kelsey Bisson, Emmanuel Boss, Stephanie Dutkiewicz, Stephanie Henson
Summary: By analyzing a 20-year MODIS satellite data, it was found that 56% of the global surface ocean has been affected by climate change, with significant changes in color, especially in the ocean south of 40 degrees equator. Overall, low-latitude oceans have become greener in the past 20 years.
Article
Mathematics, Applied
H. Awada, S. Aronica, A. Bonanno, G. Basilone, S. W. Zgozi, G. Giacalone, I. Fontana, S. Genovese, R. Ferreri, S. Mazzola, B. Spagnolo, D. Valenti, G. Denaro
Summary: The study proposed a 3D model that successfully simulated the spatial distribution of chlorophyll in most parts of the Gulf of Sirte, with 80% of the simulated results matching the experimental data. This model can be used to predict chlorophyll distributions in hard-to-access areas and to forecast the impact of global warming on phytoplankton in marine ecosystems.
COMMUNICATIONS IN NONLINEAR SCIENCE AND NUMERICAL SIMULATION
(2021)
Review
Environmental Sciences
Panagiotis D. Dimitriou, Ioulia Santi, Manos L. Moraitis, Irini Tsikopoulou, Paraskevi Pitta, Ioannis Karakassis
Summary: The HYPOXIA project investigated the ecological processes of eutrophication and its potential irreversible changes in the eastern Mediterranean marine ecosystems. The project found that nutrient inputs in the water column can quickly lead to the bloom of specific species with high nutrient uptake capabilities. The coastal ecosystems in the region have shown high resilience to eutrophication.
FRONTIERS IN MARINE SCIENCE
(2022)
Article
Geography, Physical
Mortimer Werther, Daniel Odermatt, Stefan G. H. Simis, Daniela Gurlin, Daniel S. F. Jorge, Hubert Loisel, Peter D. Hunter, Andrew N. Tyler, Evangelos Spyrakos
Summary: This study characterized the uncertainties of remote sensing products for phytoplankton chlorophyll-a (chla) concentration in oligotrophic and mesotrophic lakes and reservoirs using 13 existing algorithms. The results showed substantial retrieval inaccuracies, but improvements in accuracy were observed with specific sensor configurations and machine learning models.
ISPRS JOURNAL OF PHOTOGRAMMETRY AND REMOTE SENSING
(2022)
Article
Environmental Sciences
Lewis A. Molot, Scott N. Higgins, Sherry L. Schiff, Jason J. Venkiteswaran, Michael J. Paterson, Helen M. Baulch
Summary: The study showed that dense cyanobacteria blooms can rapidly develop under high phosphorus loading without anthropogenic nitrogen inputs. Phosphorus fertilization significantly increased chlorophyll a concentrations and cyanobacteria biomass.
ENVIRONMENTAL RESEARCH LETTERS
(2021)
Article
Biodiversity Conservation
Gary Free, Mariano Bresciani, Monica Pinardi, Stefan Simis, Xiaohan Liu, Clement Albergel, Claudia Giardino
Summary: Compounded weather events such as sequential heatwaves are likely to have an increasing impact on freshwater ecosystems, especially lakes. During a double heatwave event in 2019, deep and medium depth lakes in higher latitudes showed a synchronous increase in chlorophyll-a concentration with temperature, while shallow lakes displayed a less synchronous response.
ECOLOGICAL INDICATORS
(2022)
Article
Engineering, Civil
Ming Shen, Juhua Luo, Zhigang Cao, Kun Xue, Tianci Qi, Jinge Ma, Dong Liu, Kaishan Song, Lian Feng, Hongtao Duan
Summary: This study aims to address the sensitivity issue of atmospheric correction (AC) in optically complex waters by selecting a machine learning-based algorithm that is less affected by AC uncertainties. Nine state-of-the-art Chla algorithms and four machine learning approaches were implemented, and the RFR-Chla model performed the best with higher robustness against AC uncertainties. The spatiotemporal variations of Chla in eastern China were mapped using the proposed RFR-Chla model, revealing the severe eutrophication of lakes in the region and seasonal variations. This study provides important insights for water quality monitoring and aquatic management in turbid inland waters.
JOURNAL OF HYDROLOGY
(2022)
Article
Engineering, Environmental
Jingjing Xia, Jin Zeng
Summary: Efforts to control environmental pollution have increased significantly to meet people's demands for a better life and ecological environment. This study proposed and compared four SVM-based hybrid models with intelligent optimization algorithms to understand the relationship between Chl-a prediction and water quality eutrophication grade classification. Results showed that pH, TN, TP, and NH3-N played a major role in the prediction models.
ENVIRONMENTAL SCIENCE-WATER RESEARCH & TECHNOLOGY
(2021)
Article
Environmental Sciences
Mortimer Werther, Daniel Odermatt, Stefan G. H. Simis, Daniela Gurlin, Moritz K. Lehmann, Tiit Kutser, Remika Gupana, Adam Varley, Peter D. Hunter, Andrew N. Tyler, Evangelos Spyrakos
Summary: In this study, Bayesian probabilistic neural networks (BNNs) were developed for estimating chlorophyll-a concentration (chla) in oligotrophic and mesotrophic lakes. The BNNs provided per-pixel uncertainty percentages and were evaluated through various assessments. The results showed that the BNNs achieved higher accuracy in oligotrophic waters, but the accuracy decreased as nutrient levels increased. The study also demonstrated the importance of uncertainty estimation in improving the quality of the chla result.
REMOTE SENSING OF ENVIRONMENT
(2022)
Article
Engineering, Environmental
Weijia Wang, Kun Shi, Yibo Zhang, Na Li, Xiao Sun, Dong Zhang, Yunlin Zhang, Boqiang Qin, Guangwei Zhu
Summary: The worldwide expansion of phytoplankton blooms poses a serious threat to water quality, food webs, habitat stability, and human health. To address the need for high-frequency and continuous observations of phytoplankton bloom dynamics, a novel ground-based remote sensing system (GRSS) is proposed. The GRSS successfully captured rapid changes in chlorophyll a concentrations (Chla) in inland waters and demonstrated its potential for high-frequency monitoring of phytoplankton blooms. The random forest regression algorithm achieved the best performance in deriving Chla.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Environmental Sciences
Paulina Orlinska-Wozniak
Summary: This study verifies the capability of the SWAT model in simulating chlorophyll a loads for unmonitored watercourses and analyzes the relationships between key parameters involved in eutrophication. The research, conducted in the Nielba River pilot catchment in west-central Poland, reveals a strong correlation of chlorophyll a with flow and surface runoff, while temperature or solar radiation show no relationship. The impacts of local conditions on chlorophyll a load simulation are also explored.
Article
Environmental Sciences
Yingxian He, Peng Zhang, Fang Xu, Lirong Zhao, Jibiao Zhang
Summary: This study investigates the seasonal variation of nutrients, eutrophication patterns, and Chlorophyll a (Chl-a) response in the coastal waters adjacent to Guangdong Province. The results show significant differences in Chl-a, dissolved inorganic nitrogen (DIN), and phosphorus (DIP) concentrations among seasons. It is necessary to strengthen integrated land and sea management to mitigate eutrophication and harmful algal blooms.
FRONTIERS IN MARINE SCIENCE
(2023)
Article
Biodiversity Conservation
Mandy Karnauskas, Michael J. Schirripa, J. K. Craig, Geoffrey S. Cook, Christopher R. Kelble, Juan J. Agar, Bryan A. Black, David B. Enfield, David Lindo-Atichati, Barbara A. Muhling, Kevin M. Purcell, Paul M. Richards, Chunzai Wang
GLOBAL CHANGE BIOLOGY
(2015)
Article
Marine & Freshwater Biology
Thomas N. Lee, Nelson Melo, Ned Smith, Elizabeth M. Johns, Christopher R. Kelble, Ryan H. Smith, Peter B. Ortner
BULLETIN OF MARINE SCIENCE
(2016)
Article
Fisheries
Chris J. Harvey, Christopher R. Kelble, Franklin B. Schwing
ICES JOURNAL OF MARINE SCIENCE
(2017)
Article
Fisheries
Roland Cormier, Christopher R. Kelble, M. Robin Anderson, J. Icarus Allen, Anthony Grehan, Olavur Gregersen
ICES JOURNAL OF MARINE SCIENCE
(2017)
Article
Marine & Freshwater Biology
N. C. Millette, C. Kelble, A. Linhoss, S. Ashby, L. Visser
BULLETIN OF MARINE SCIENCE
(2018)
Article
Environmental Sciences
Kelly A. Kearney, Mark Butler, Robert Glazer, Christopher R. Kelble, Joseph E. Serafy, Erik Stabenau
ENVIRONMENTAL MANAGEMENT
(2015)
Editorial Material
Fisheries
Mandy Karnauskas, Rebecca J. Allee, J. Kevin Craig, Michael Jepson, Christopher R. Kelble, Morgan Kilgour, Richard D. Methot, Seann D. Regan
Article
Ecology
Natalie A. Sawaya, Anni Djurhuus, Collin J. Closek, Megan Hepner, Emily Olesin, Lindsey Visser, Christopher Kelble, Katherine Hubbard, Mya Breitbart
ECOLOGY AND EVOLUTION
(2019)
Article
Multidisciplinary Sciences
Neda Trifonova, Mandy Karnauskas, Christopher Kelble
Article
Environmental Sciences
Anna Wachnicka, Joan Browder, Thomas Jackson, William Louda, Christopher Kelble, Omar Abdelrahman, Erik Stabenau, Christian Avila
ESTUARIES AND COASTS
(2020)
Article
Environmental Sciences
Jennifer P. Cannizzaro, Brian B. Barnes, Chuanmin Hu, Alina A. Corcoran, Katherine A. Hubbard, Eric Muhlbach, William C. Sharp, Larry E. Brand, Christopher R. Kelble
REMOTE SENSING OF ENVIRONMENT
(2019)
Review
Environmental Sciences
Frank E. Muller-Karger, Patricia Miloslavich, Nicholas J. Bax, Samantha Simmons, Mark J. Costello, Isabel Sousa Pinto, Gabrielle Canonico, Woody Turner, Michael Gill, Enrique Montes, Benjamin D. Best, Jay Pearlman, Patrick Halpin, Daniel Dunn, Abigail Benson, Corinne S. Martin, Lauren V. Weatherdon, Ward Appeltans, Pieter Provoost, Eduardo Klein, Christopher R. Kelble, Robert J. Miller, Francisco P. Chavez, Katrin Iken, Sanae Chiba, David Obura, Laetitia M. Navarro, Henrique M. Pereira, Valerie Allain, Sonia Batten, Lisandro Benedetti-Checchi, J. Emmett Duffy, Raphael M. Kudela, Lisa-Maria Rebelo, Yunne Shin, Gary Geller
FRONTIERS IN MARINE SCIENCE
(2018)
Article
Environmental Sciences
Paul A. Sandifer, Landon C. Knapp, Tracy K. Collier, Amanda L. Jones, Robert-Paul Juster, Christopher R. Kelble, Richard K. Kwok, John V. Miglarese, Lawrence A. Palinkas, Dwayne E. Porter, Geoffrey I. Scott, Lisa M. Smith, William C. Sullivan, Ariana E. Sutton-Grier
Article
Ecology
Kirstin Holsman, Jameal Samhouri, Geoffrey Cook, Elliott Hazen, Erik Olsen, Maria Dillard, Stephen Kasperski, Sarah Gaichas, Christopher R. Kelble, Mike Fogarty, Kelly Andrews
ECOSYSTEM HEALTH AND SUSTAINABILITY
(2017)