Review
Plant Sciences
Paul Ziegler, Klaus J. Appenroth, K. Sowjanya Sree
Summary: Duckweeds are small aquatic higher plants that grow on or just below the surface of still waters. Despite their small size, they are able to survive and reproduce in various climate zones around the world. They face multiple challenges, including high temperatures, light intensity fluctuations, nutrient shortage, damage by microorganisms and herbivores, presence of harmful substances, competition from other plants, winter cold, and drought. Duckweeds have adapted mechanisms for rapid growth, organ formation, and clonal diversity to cope with these challenges. They can also cooperate with other organisms in their environment to improve their chances of survival.
Article
Environmental Sciences
Mi-Yeon Shin, Jeong Weon Choi, Seungho Lee, Sungmin Kim, Younglim Kho, Kyungho Choi, Sungkyoon Kim
Summary: In this study, the pharmacokinetics of parabens following dermal exposure were investigated. The results showed slower absorption rates, longer half-lives, and higher proportions of unconjugated parabens compared to oral exposure. This study provides valuable insights into the kinetic properties of parabens in humans.
Article
Environmental Sciences
Denisa Medkova, Aneta Hollerova, Barbora Riesova, Jana Blahova, Nikola Hodkovicova, Petr Marsalek, Veronika Doubkova, Zuzana Weiserova, Jan Mares, Martin Faldyna, Frantisek Tichy, Zdenka Svobodova, Pavla Lakdawala
Summary: This study aimed to investigate the effects of widely used pesticides and parabens on aquatic non-target biota, using model organisms of fish and amphibians. The results show that even low concentrations of these chemicals can impact gene expression, detoxification, sex hormone production, and cell stress.
Article
Plant Sciences
Nicholas P. Tippery, Donald H. Les, Klaus J. Appenroth, K. Sowjanya Sree, Daniel J. Crawford, Manuela Bog
Summary: The classification of duckweeds as a subfamily of the expanded family Araceae rather than a separate family has sparked debates in the field of botanical taxonomy. The proposal to restore the subfamily Orontioideae to family status as Orontiaceae aims to maintain stability and utility in plant classification.
Article
Environmental Sciences
Samarasinghe Vidane Arachchige Chamila Samarasinghe, Kannan Krishnan, Robert John Aitken, Ravi Naidu, Mallavarapu Megharaj
Summary: The study found that methyl-, propyl-, and butyl parabens do not negatively affect the survival, growth, and reproduction of Eisenia fetida up to a concentration of 1000 mg Kg(-1), and that these compounds exhibit low persistence in soil, with over 90% disappearing within three days. Moreover, microbial activity in frozen soil was found to only degrade 16-54% of parabens, indicating rapid degradation of these compounds in terrestrial environments and minimal threat to species like Eisenia fetida. This study represents the first report on the toxicity of parabens to earthworms.
ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY
(2021)
Article
Plant Sciences
Luca Braglia, Diego Breviario, Silvia Giani, Floriana Gavazzi, Jacopo De Gregori, Laura Morello
Summary: Recent research on duckweeds has focused on their potential as a new crop in circular bioeconomy, emphasizing the importance of accurate species identification. Molecular methods have provided a more solid taxonomic foundation for the Lemna genus, particularly in the challenging sect. Lemna. The study revealed misidentifications and interspecific hybrids among the closely related species L. minor, L. japonica, and Lemna gibba.
Review
Plant Sciences
Klaus-J Appenroth, Paul Ziegler, K. Sowjanya Sree
Summary: Starch accumulation in duckweeds is influenced by factors such as growth conditions, stress, and growth regulators. Biotechnological methods for converting duckweed starch into sugars and fermenting them into bio-alcohols are being explored for biofuel production.
PHYSIOLOGY AND MOLECULAR BIOLOGY OF PLANTS
(2021)
Article
Multidisciplinary Sciences
Marlon Cobos, A. Townsend Peterson
Summary: The selection of appropriate independent variables to create models characterizing ecological niches of species is crucial in distributional ecology. The set of dimensions in which a niche is defined can provide insights into the factors that limit a species' distributional potential. Using a multistep approach, we found that the final selection of variables for modeling the ecological niche of Spirodela polyrhiza varied considerably depending on the algorithms, calibration areas, and spatial resolutions used. However, variables representing extreme temperatures and dry periods were consistently selected, highlighting their importance in shaping the distribution of this species. Our results suggest that an informed selection of variables, statistical filtering, and model selection exercises can improve the determination of variables that shape the niche and distribution of a species, despite differences in data and modeling algorithms.
Article
Environmental Sciences
Simona Paolacci, Vlastimil Stejskal, Damien Toner, Marcel A. K. Jansen
Summary: This study provides quantitative data on the nitrogen and phosphorus removal efficiency of a duckweed-based IMTA system and confirms that duckweed can maintain good water quality and high protein biomass in an IMTA system.
ENVIRONMENTAL POLLUTION
(2022)
Article
Plant Sciences
Simona Paolacci, Vlastimil Stejskal, Damien Toner, Marcel A. K. Jansen
Summary: Duckweed plays a significant role in the remediation of aquaculture wastewater by efficiently removing nutrients. Phytoplankton also contributes to nutrient removal, while the biofilm has a minimal impact.
Article
Green & Sustainable Science & Technology
Neil E. Coughlan, Eamonn Walsh, Paul Bolger, Gavin Burnell, Niall O'Leary, Maria O'Mahoney, Simona Paolacci, David Wall, Marcel A. K. Jansen
Summary: Duckweeds, a type of Lemnaceae, have gained attention as a sustainable source of nutrition, biofuel, and pharmaceuticals, as well as for their ability to remediate wastewaters. Indoor cultivation of duckweed can maximize yields, provide pest-free and sterile conditions, and enable crop manipulation. Technological advances in urban and vertical farming can be utilized to design and operate novel duckweed cultivation systems, including recirculating flow-through technology and sensor support systems with artificial intelligence. Despite challenges and knowledge gaps, there are realistic opportunities to develop and operate high-capacity, autonomous, controlled cultivation of duckweed under indoor conditions for various purposes.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Plant Sciences
Finn Petersen, Johannes Demann, Dina Restemeyer, Andreas Ulbrich, Hans-Werner Olfs, Heiner Westendarp, Klaus-Juergen Appenroth
Summary: By testing different nitrate-N to ammonium-N ratios and dilutions, it was found that a ratio of 75% nitrate-N and 25% ammonium-N, with a dilution of 50%, yielded the best results for Lemna minor and Wolffiella hyalina. This ratio and dilution resulted in the highest relative protein yield per week and m(2) for both species.
Article
Environmental Sciences
M. R. Martinez-Gallardo, M. M. Jurado, J. A. Lopez-Gozalez, A. Toribio, F. Suarez-Estrella, J. A. Saez, R. Moral, F. J. Andreu-Rodriguez, M. J. Lopez
Summary: This study investigates the treatment and utilization of olive mill wastewater sludge using four bio-treatments. The results show that these treatments effectively reduce the toxicity of the sludge, promote the growth of beneficial microbiota, and provide high-quality agricultural products.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2022)
Article
Environmental Sciences
Silvania Lucas dos Santos, Adrianus van Haandel
Summary: The main issue with waste stabilization ponds is the inability to remove nutrients, which can be efficiently tackled by polishing ponds after anaerobic pretreatment. The pH level in the ponds is crucial for nutrient removal, with biological processes in polishing ponds causing pH elevation triggering nutrient removal mechanisms. Oxygen production through photosynthesis dominates in polishing ponds, leading to an increase in pH and facilitating nutrient removal mechanisms.
Article
Plant Sciences
Rachel O'Mahoney, Neil E. Coughlan, Eamonn Walsh, Marcel A. K. Jansen
Summary: This study explored the feasibility of using anaerobic digester pre-treated wastewater as a cultivation medium for Lemna minor Blarney and found that it can simultaneously generate valuable plant biomass and remediate wastewater.
Article
Engineering, Environmental
J. L. Cestari, T. Matsumoto, D. Gebara, M. Dall'Aglio Sobrinho, M. Libanio
WATER SCIENCE AND TECHNOLOGY-WATER SUPPLY
(2016)
Article
Water Resources
Tsunao Matsumoto, Yemall Alexander Maigual Enriquez
ENGENHARIA SANITARIA E AMBIENTAL
(2016)
Article
Water Resources
Juliana Heloisa Pine Americo-Pinheiro, William Deodato Isique, Nadia Hortense Torres, Angela Aparecida Machado, Sergio Luis de Carvalho, Walter Veriano Valerio Filho, Luiz Fernando Romanholo Ferreira
ENGENHARIA SANITARIA E AMBIENTAL
(2017)
Article
Materials Science, Multidisciplinary
William Deodato Isique, Tatiana Santos da Silva, Tsunao Matsumoto
Article
Engineering, Environmental
Luan de Souza Leite, Tsunao Matsumoto, Liliane Lazzari Albertin
JOURNAL OF ENVIRONMENTAL ENGINEERING
(2018)
Article
Engineering, Environmental
Tatiana Santos da Silva, Tsunao Matsumoto, Mariane Luz dos Anjos, Liliane Lazzari Albertin
JOURNAL OF ENVIRONMENTAL ENGINEERING
(2018)
Article
Engineering, Environmental
Luan de Souza Leite, Tsunao Matsumoto, Liliane Lazzari Albertin
JOURNAL OF ENVIRONMENTAL ENGINEERING
(2018)
Article
Engineering, Environmental
Tatiana Santos da Silva, Tsunao Matsumoto, Mariane Luz dos Anjos, Liliane Lazzari Albertin
JOURNAL OF ENVIRONMENTAL ENGINEERING
(2018)
Article
Fisheries
Yemall Alexander Maigual-Enriquez, Amanda Alves Domingos Maia, Camilo Lenin Guerrero-Romero, Tsunao Matsumoto, Elidiane Cipriano Rangel, Leandro Cardoso de Morais
Article
Water Resources
Miriam Ruiz Canevaroli, Eliana Gertrudes de Macedo Lemos, Kelly Mari Pires de Oliveira, William Deodato Isique, Yzel Rondon Suarez, Alessandro Minillo
Summary: Atrazine can be biodegraded by microorganisms present in biological activated carbon (BAC) filters, mainly bacteria such as Acinetobacter, Bacillus, Exiguobacterium, and Pseudomonas. The study showed that over 80% of atrazine can be removed by microorganisms in BAC filters. This research suggests the potential of using BAC filters for atrazine removal through biodegradation.
ENGENHARIA SANITARIA E AMBIENTAL
(2021)
Article
Water Resources
Joao Miguel Merces Bega, Jefferson Nascimento de Oliveira, Liliane Lazzari Albertin, William Deodato Isique
Summary: In population centers, aquatic environments are degrading due to the release of domestic sewage. This study used caffeine as an indicator and found it to be efficient in detecting pollution by domestic sewage through HPLC analysis.
ENGENHARIA SANITARIA E AMBIENTAL
(2021)
Article
Environmental Studies
Daiane Cristina de Oliveira Garcia, Liliane Lazzari Albertin, Tsunao Matsumoto
MANAGEMENT OF ENVIRONMENTAL QUALITY
(2017)
Article
Ecology
Thassya Georgia Lucas de Souza, Tsunao Matsumoto, Ivan Andres Sanchez Ortiz
