Article
Environmental Sciences
Shuangling Chen, Yu Meng
Summary: Accurate and robust measurements from ocean color satellites are crucial for studying changes in surface ocean properties. In this study, a locally-tuned chlorophyll algorithm was used to investigate the spatial expansion of phytoplankton blooms in the Ross Sea. The results showed that the blooms were larger than previously estimated and correlated with sea surface temperature, wind speed, and sea ice concentration.
Article
Ecology
Chun Ok Jo, Jongseong Ryu, Su-Young Woo, Won-Jong Lee, Hyun Woo Kim, Yun-Soo Choi
Summary: The proposed methodology combines mixed layer depths, chlorophyll-a concentrations, and a hypothetical critical depth to determine basin-wide marine export production ratios during phytoplankton bloom periods. The approach provides monthly export ratios that reflect seasonal variability of net community production with high spatial and temporal resolutions, offering a complement to methods relying on extrapolation of limited field measurements.
REGIONAL STUDIES IN MARINE SCIENCE
(2021)
Article
Environmental Sciences
Yi Xu, Ying Wu, Peng Xiu, Jianzhong Ge, Jing Zhang
Summary: The study evaluates the seasonal and interannual variability of phytoplankton in the East China Sea (ECS) and identifies the environmental determinants that drive these variations. The findings highlight the importance of the triangular area in the ECS in understanding phytoplankton dynamics, with climate-sensitive environmental drivers playing a key role in the region.
FRONTIERS IN MARINE SCIENCE
(2022)
Article
Geosciences, Multidisciplinary
Christina Schallenberg, Robert F. Strzepek, Sophie Bestley, Bozena Wojtasiewicz, Thomas W. Trull
Summary: The ratio between fluorescence and chlorophyll-a varies in the world's oceans, with the highest ratios and variability observed in the Southern Ocean. In addition to species composition and chlorophyll packaging, iron limitation also plays a significant role in influencing this ratio. This study utilized radiometry data from BGC-Argo floats in the Southern Ocean to estimate chlorophyll concentration based on the light attenuation coefficient, revealing a positive correlation between fluorescence/chlorophyll ratio and a proxy for iron limitation.
GEOPHYSICAL RESEARCH LETTERS
(2022)
Article
Environmental Sciences
Xiying Sun, Zhaohui Chen, Chao Zhang, Siyu Meng
Summary: The seasonal variations of surface Chlorophyll-a (Chl-a) concentration (SCC) in mid-latitude oceans exhibit a bimodal or unimodal cycle. The factors of nutrient and light play vital roles in these seasonal differences. However, the quantitative understanding of distinguishing these two factors is insufficient. This study focuses on the Kuroshio Extension (KE) region and investigates the variations of SCC, specifically the emergence latitudes of the secondary peak. Based on satellite observations, it is found that the bloom time and latitudinal distribution of SCC are influenced by nutrient and light availability.
FRONTIERS IN MARINE SCIENCE
(2023)
Article
Biodiversity Conservation
Takuhei Shiozaki, Amane Fujiwara, Koji Sugie, Shigeto Nishino, Akiko Makabe, Naomi Harada
Summary: This study reveals that diatom blooms can occur near the seafloor rather than at the surface in the shallow Arctic shelf region. The increase in phytoplankton production in the Arctic Ocean due to sea ice loss is often underestimated by satellite observations, as they fail to account for the bottom-associated blooms that occur occasionally. The results highlight the importance of considering these hidden blooms in assessing primary production in the Arctic Ocean.
GLOBAL CHANGE BIOLOGY
(2022)
Article
Environmental Sciences
Michael A. Dallosch, Irena F. Creed
Summary: This study utilized remote sensing reflectance data and water chemistry to identify seven unique optical water types in inland lakes. The performance of chlorophyll-a retrieval algorithms for each optical water type was compared, showing improved predictive ability compared to algorithms for all lakes combined.
Article
Green & Sustainable Science & Technology
Yang Song, Min Chen, Jia Li, Linglei Zhang, Yun Deng, Jichang Chen
Summary: Selective withdrawal is an effective and promising method to mitigate thermal pollution and environmental problems in reservoirs and downstream rivers. However, the potential effects of selective withdrawal on harmful algal blooms in reservoirs are uncertain. This study developed a hydro-ecological model to investigate how different withdrawal scenarios affect algal growth and hydrodynamic environments in Zipingpu reservoir. The results showed that surface withdrawal could efficiently inhibit algal growth and decrease algal bloom concentration in the reservoir.
JOURNAL OF CLEANER PRODUCTION
(2023)
Article
Geochemistry & Geophysics
Liam J. Kelly, Kristen E. Fauria, Tushar Mittal, Jan El Kassar, Ralf Bennartz, David Nicholson, Ajit Subramaniam, Ashok Kumar Gupta
Summary: Volcanoes depositing eruptive products into the ocean can trigger phytoplankton blooms, but the specific conditions and mechanisms are not well understood. Using satellite remote sensing, this study analyzed the chlorophyll response to explosive and effusive activity from Nishinoshima volcano, Japan. The study found that the volcanic activity led to significant phytoplankton blooms, with a spatial correlation between blooms and ash plume direction. Based on nutrient supply, it is hypothesized that nitrogen-fixing phytoplankton led to a significant drawdown of carbon.
GEOCHEMISTRY GEOPHYSICS GEOSYSTEMS
(2023)
Article
Limnology
Yuhi Satoh, Shigeyoshi Otosaka, Takashi Suzuki, Takahiro Nakanishi
Summary: To investigate the factors regulating particulate iodine concentration in seawater, measurements were taken in two Pacific coastal areas off Japan (Aomori and Fukushima) in two seasons (May and October) along with various parameters. The dataset was divided into three groups based on the atomic ratio of iodine to particulate organic carbon, which is an indicator of iodine accumulation efficiency. These groups were characterized by different phytoplanktonic physiological states, explaining the observed seasonal and regional differences in iodine concentration. The study suggests that the phytoplanktonic physiological state is a vital factor regulating iodine concentration in seawater.
LIMNOLOGY AND OCEANOGRAPHY
(2023)
Article
Marine & Freshwater Biology
Ya Xie, Hongli Zhao, Junsheng Li, Fangfang Zhang, Shenglei Wang, Ziyao Yin, Wei Shen
Summary: Cage-based aquaculture has been discontinued in many lakes and reservoirs in China to reduce eutrophication. This study analyzed the changes in phytoplankton biomass in Daheiting Reservoir before and after cage removal. The findings showed that the phytoplankton biomass initially increased rapidly after cage removal, but then declined. This could be attributed to the sudden lack of algae predators and decreased nutrient input in the water.
Article
Oceanography
Nikathithara Velappan Madhu, Peariya Anil, Paul Meenu, Thundiyil Raju Gireeshkumar, Kallungal Ravunnikutty Muraleedharan, Thekkendavida Velloth Rehitha, Mathew Dayana, Chazhikulam Rajan Vishal
Summary: The study shows that the co-existence of coastal upwelling and mud banks in the nearshore waters of Alappuzha in India led to changes in phytoplankton community, increased nutrient availability, and altered productivity patterns, with dominance of small-sized phytoplankton community throughout the region.
Article
Ecology
Aleksey Paltsev, Irena F. Creed
Summary: Increased reports of phytoplankton blooms in remote pristine lakes suggest potential climate-driven changes in lake ecosystems. Detailed surveys of lakes in northern forested landscapes are crucial to determine if phytoplankton biomass is increasing. The spatial and temporal patterns of chlorophyll-a variation in lakes within the northern temperate forest highlight the complex interactions of local and regional characteristics that influence lake responses to climate change.
Review
Oceanography
Jan-Erik Tesdal, Hugh W. Ducklow, Joaquim I. Goes, Igor Yashayaev
Summary: The Labrador Sea is becoming more productive with more intense and widespread phytoplankton blooms. Nutrient concentrations in the upper Labrador Sea are positively correlated with chlorophyll-a concentrations and strongly correlated with winter convection depth.
PROGRESS IN OCEANOGRAPHY
(2022)
Article
Marine & Freshwater Biology
Detong Sun, Mark Barton, Melanie Parker, Y. Peter Sheng
Summary: This study provides analytical solutions for nutrients and phytoplankton in a one-dimensional estuary. The solutions include steady state and non-steady state solutions, which can predict the chlorophyll maximum and its location as well as the exponential growth or decay of phytoplankton. The findings have implications for improving numerical models of estuarine eutrophication and water management strategies.
ESTUARINE COASTAL AND SHELF SCIENCE
(2022)
Article
Environmental Sciences
Pedro Walfir M. Souza-Filho, Felipe de Lucia Lobo, Rosane Barbosa Lopes Cavalcante, Jose Aroudo Mota, Wilson da Rocha Nascimento, Diogo C. Santos, Evlyn M. L. M. Novo, Claudio Clemente Faria Barbosa, Jose O. Siqueira
Summary: The Amazon region has seen significant deforestation due to mining activities, with gold mining being the major contributor. Mining in protected areas is dominated by artisanal gold mining, while industrial-scale iron ore mining has relatively lower impacts on mining areas.
LAND DEGRADATION & DEVELOPMENT
(2021)
Article
Environmental Sciences
Felipe de Lucia Lobo, Gustavo Willy Nagel, Daniel Andrade Maciel, Lino Augusto Sander de Carvalho, Vitor Souza Martins, Claudio Clemente Faria Barbosa, Evlyn Marcia Leao de Moraes Novo
Summary: This paper discusses the development of a water quality monitoring system based on remote sensing imagery, specifically focusing on creating a cloud-computing interface on Google Earth Engine. This system allows users to access algae bloom related products with high spatial and temporal resolution. The proposed methodology uses Sentinel-2 images to generate an image collection of the Normalized Difference Chlorophyll-a Index, estimating Chl-a concentration and Trophic State Index.
Article
Marine & Freshwater Biology
Carlos A. S. Araujo, Simon Belanger
Summary: The inherent optical properties and optically significant constituents in the nearshore zones of the Estuary and Gulf of St. Lawrence were investigated. The study provided a detailed characterization of dissolved organic matter and particulate matter, and revealed the dominant control processes and seasonal variations. The findings contribute to the development of remote sensing algorithms for monitoring biogeochemically relevant constituents in the water.
ESTUARINE COASTAL AND SHELF SCIENCE
(2022)
Article
Environmental Sciences
Cleber Nunes Kraus, Daniel Andrade Maciel, Marie Paule Bonnet, Evlyn Marcia Leao de Moraes Novo
Summary: This research investigated the use of multispectral vertical diffuse attenuation coefficient of downward irradiance (K-d) gradients in accessing phytoplankton genera. The results suggest that phytoplankton genera are organized based on their ability to use light intensity and different spectral ranges of visible light, with changes in light availability seasonally impacting phytoplankton structure. The study provides valuable insights into describing phytoplankton communities in tropical freshwater floodplains using orbital data, and the approach can be used to assess phytoplankton diversity in these environments.
Article
Environmental Sciences
Rejane S. Paulino, Vitor S. Martins, Evlyn M. L. M. Novo, Claudio C. F. Barbosa, Lino A. S. de Carvalho, Felipe N. Begliomini
Summary: This research used a physical-based approach with three empirical methods to correct and characterize the adjacency effects in Sentinel-2 images over Brazilian inland waters. The importance of determining the H-Adj parameter for low water reflectance values was highlighted, and the importance of adjacency correction under high aerosol loading and extremely dark, low-reflectance waters was emphasized.
Article
Environmental Sciences
Carlos A. S. Araujo, Claude Belzile, Jean-Eric Tremblay, Simon Belanger
Summary: This study investigated the seasonal and spatial variability of surface phytoplankton assemblages and associated environmental niches in a human-impacted subarctic coastal bay in Quebec, Canada. The results showed that the phytoplankton assemblages in the Bay of Sept-iles were more diverse than in the central portion of the St. Lawrence Estuary. The temporal distribution of the phytoplankton assemblages reflected the major seasonal signal of the nearshore subarctic environment.
FRONTIERS IN MARINE SCIENCE
(2022)
Article
Environmental Sciences
Thainara Munhoz Alexandre de Lima, Claudia Giardino, Mariano Bresciani, Claudio Clemente Faria Barbosa, Alice Fabbretto, Andrea Pellegrino, Felipe Nincao Begliomini
Summary: The aim of this study is to test the accuracy of state-of-the-art water constituent retrieval algorithms for phycocyanin (PC) and chlorophyll-a (chl-a) concentrations in Brazilian reservoirs. The algorithms were tested on PRISMA and Sentinel-3 OLCI data, with a focus on PC mapping using OLCI data for its high revisit time. The results suggest that applying the Semi-Analytical algorithm to PRISMA and OLCI data can accurately detect PC in Brazilian reservoirs.
Correction
Multidisciplinary Sciences
Moritz K. Lehmann, Daniela Gurlin, Nima Pahlevan, Krista Alikas, Ted Conroy, Janet Anstee, Sundarabalan V. Balasubramanian, Claudio C. F. Barbosa, Caren Binding, Astrid Bracher, Mariano Bresciani, Ashley Burtner, Zhigang Cao, Arnold G. Dekker, Courtney Di Vittorio, Nathan Drayson, Reagan M. Errera, Virginia Fernandez, Dariusz Ficek, Cedric G. Fichot, Peter Gege, Claudia Giardino, Anatoly A. Gitelson, Steven R. Greb, Hayden Henderson, Hiroto Higa, Abolfazl Irani Rahaghi, Cedric Jamet, Dalin Jiang, Thomas Jordan, Kersti Kangro, Jeremy A. Kravitz, Arne S. Kristoffersen, Raphael Kudela, Lin Li, Martin Ligi, Hubert Loisel, Steven Lohrenz, Ronghua Ma, Daniel A. Maciel, Tim J. Malthus, Bunkei Matsushita, Mark Matthews, Camille Minaudo, Deepak R. Mishra, Sachidananda Mishra, Tim Moore, Wesley J. Moses, Ha Nguyen, Evlyn M. L. M. Novo, Stefani Novoa, Daniel Odermatt, David M. O'Donnell, Leif G. Olmanson, Michael Ondrusek, Natascha Oppelt, Sylvain Ouillon, Waterloo Pereira Filho, Stefan Plattner, Antonio Ruiz Verdu, Salem I. Salem, John F. Schalles, Stefan G. H. Simis, Eko Siswanto, Brandon Smith, Ian Somlai-Schweiger, Mariana A. Soppa, Evangelos Spyrakos, Elinor Tessin, Hendrik J. van der Woerd, Andrea Vander Woude, Ryan A. Vandermeulen, Vincent Vantrepotte, Marcel R. Wernand, Mortimer Werther, Kyana Young, Linwei Yue
Article
Multidisciplinary Sciences
Moritz K. Lehmann, Daniela Gurlin, Nima Pahlevan, Krista Alikas, Janet Anstee, Sundarabalan V. Balasubramanian, Claudio C. F. Barbosa, Caren Binding, Astrid Bracher, Mariano Bresciani, Ashley Burtner, Zhigang Cao, Arnold G. Dekker, Courtney Di Vittorio, Nathan Drayson, Reagan M. Errera, Virginia Fernandez, Dariusz Ficek, Cedric G. Fichot, Peter Gege, Claudia Giardino, Anatoly A. Gitelson, Steven R. Greb, Hayden Henderson, Hiroto Higa, Abolfazl Irani Rahaghi, Cedric Jamet, Dalin Jiang, Thomas Jordan, Kersti Kangro, Jeremy A. Kravitz, Arne S. Kristoffersen, Raphael Kudela, Lin Li, Martin Ligi, Hubert Loisel, Steven Lohrenz, Ronghua Ma, Daniel A. Maciel, Tim J. Malthus, Bunkei Matsushita, Mark Matthews, Camille Minaudo, Deepak R. Mishra, Sachidananda Mishra, Tim Moore, Wesley J. Moses, Ha Nguyen, Evlyn M. L. M. Novo, Stefani Novoa, Daniel Odermatt, David M. O'Donnell, Leif G. Olmanson, Michael Ondrusek, Natascha Oppelt, Sylvain Ouillon, Waterloo Pereira Filho, Stefan Plattner, Antonio Ruiz Verdu, Salem I. Salem, John F. Schalles, Stefan G. H. Simis, Eko Siswanto, Brandon Smith, Ian Somlai-Schweiger, Mariana A. Soppa, Evangelos Spyrakos, Elinor Tessin, Hendrik J. van der Woerd, Andrea Vander Woude, Ryan A. Vandermeulen, Vincent Vantrepotte, Marcel R. Wernand, Mortimer Werther, Kyana Young, Linwei Yue
Summary: The development of algorithms for remote sensing of water quality requires a large amount of in situ data to consider the bio-geo-optical diversity of inland and coastal waters. The GLORIA dataset includes 7,572 curated hyperspectral remote sensing reflectance measurements at 1 nm intervals within the 350 to 900 nm wavelength range, contributed by researchers affiliated with 59 institutions worldwide. This dataset provides a comprehensive reference for practitioners planning similar measurements and enables scientific and technological advancement towards operational regional and global water quality monitoring.
Letter
Limnology
Daniel Andrade Maciel, Nima Pahlevan, Claudio Clemente Faria Barbosa, Evlyn Marcia Leao de Moraes de Novo, Rejane Souza Paulino, Vitor Souza Martins, Eric Vermote, Christopher J. Crawford
Summary: The US Geological Survey Landsat surface reflectance (SR) archive, originally developed for terrestrial science, is increasingly being used in large-scale water-quality studies. However, these products have not been rigorously validated using in situ measured reflectance. This study quantifies and demonstrates the quality of the SR products using a global dataset (N = 1100). It found that the Landsat 8/9 SR in the green and red bands meet the accuracy requirements, but there are uncertainties and biases in the blue, coastal-aerosol, and visible bands that need to be addressed for advanced applications.
LIMNOLOGY AND OCEANOGRAPHY LETTERS
(2023)
Article
Environmental Sciences
Filippo Ferrario, Carlos A. S. Araujo, Simon Belanger, Daniel Bourgault, Julie Carriere, Charlotte Carrier-Belleau, Elliot Dreujou, Ladd Erik Johnson, S. Kim Juniper, Raphael Mabit, Christopher W. McKindsey, Lindsey Ogston, Manon M. M. Picard, Richard Saint-Louis, Emilie Saulnier-Talbot, Jean-Luc Shaw, Nadine Templeman, Thomas W. Therriault, Jean-Eric Tremblay, Philippe Archambault
Summary: Ports play a central role in society, but they also pose potential environmental risks and stressors. Port managers face challenges in mitigating these risks and impacts on ecosystems and human health. The development of comprehensive environmental monitoring approaches integrated into wider ecosystems can help achieve sustainable development.
ELEMENTA-SCIENCE OF THE ANTHROPOCENE
(2022)
Article
Remote Sensing
Raphael Mabit, Carlos A. S. Araujo, Rakesh Kumar Singh, Simon Belanger
Summary: This paper investigated the methods of estimating dissolved organic matter and suspended particulate matter in coastal waters using satellite remote sensing data, and developed regional algorithms for OLI and MSI sensors. The results showed that different algorithms were required for different water bodies, and the ACOLITE algorithm performed the best in CDOM estimation.
FRONTIERS IN REMOTE SENSING
(2022)
Article
Environmental Sciences
Edson Filisbino Freire da Silva, Evlyn Marcia Leao de Moraes Novo, Felipe de Lucia Lobo, Claudio Clemente Faria Barbosa, Carolline Tressmann Cairo, Mauricio Almeida Noernberg, Luiz Henrique da Silva Rotta
Summary: This study utilizes a machine learning method to monitor Brazilian OWTs using Sentinel-2 MSI, achieving a classification accuracy of 0.94 based on field radiometric data simulation. The novelty detection in satellite images distinguishes between known and new OWTs, providing an expected accuracy of 0.78 considering errors retrieved from field measurements.
REMOTE SENSING APPLICATIONS-SOCIETY AND ENVIRONMENT
(2021)
