Article
Multidisciplinary Sciences
Anamaria S. Diniz, Silvano L. N. Filho, Watson A. Gama, Ariadne N. Moura
Summary: This study evaluated the effects of temporal and vertical variation of the water column on phytoplankton and zooplankton dynamics in two tropical reservoirs in Northeastern Brazil. The results showed that nitrogen directly influenced phytoplankton, and Calanoida copepods demonstrated the ability to adapt to different trophic conditions and phytoplankton compositions.
ANAIS DA ACADEMIA BRASILEIRA DE CIENCIAS
(2022)
Article
Limnology
Amanda R. McCormick, Joseph S. Phillips, Jamieson C. Botsch, Anthony R. Ives
Summary: This study examines the autotrophic structure of Lake Myvatn over 7 summers and found significant variation in the balance between benthic and pelagic production, with increased phytoplankton abundance leading to declines in benthic production.
Review
Environmental Sciences
Emily Curren, Chui Pin Leaw, Po Teen Lim, Sandric Chee Yew Leong
Summary: This article provides a comprehensive insight into the distribution, ecophysiology, and toxicity of Moorena producens, a benthic filamentous cyanobacteria. It is a cosmopolitan cyanobacteria with a global distribution, colonizing both temperate and tropical regions. The blooms of M. producens have resulted in major disruptions to recreational activities and have adverse effects on organism and human health. The blooms are triggered by the influx of nitrogen, phosphate, and iron, and the cyanobacteria produce bioactive secondary metabolites that display toxicities against a range of organisms and carcinoma cell lines.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Review
Chemistry, Medicinal
Samuel Cavalcante do Amaral, Patrick Romano Monteiro, Joaquim da Silva Pinto Neto, Gustavo Marques Serra, Evonnildo Costa Goncalves, Luciana Pereira Xavier, Agenor Valadares Santos
Summary: Microviridins, a class of ribosomal peptides derived from cyanobacteria, are potent protease inhibitors with potential applications in drug development and mosquito control. They also play a key ecological role in defending cyanobacteria against microcrustaceans. This review aims to systematically identify the key characteristics of microviridins, including their chemical structure, biosynthesis, as well as their biotechnological and ecological significance.
Article
Environmental Studies
Brendan Carberry, Tom A. Langen, Michael R. Twiss
Summary: The study found that in upland wetland restorations in the St. Lawrence River Valley, restored wetlands provide similar water quality conditions and functional equivalence as natural wetlands, indicating no substantial differences between the two in terms of ecosystem services and biodiversity.
Article
Microbiology
Endrews Delbaje, Ana Paula D. Andreote, Thierry A. Pellegrinetti, Renata B. Cruz, Luis H. Z. Branco, Marli F. Fiore
Summary: This study conducted whole-genome sequencing of the Anabaenopsis elenkinii strain isolated from a Brazilian soda lake, revealing its phylogenetic relationship within the Aphanizomenonaceae family. Additionally, the average nucleotide identity values between the NIES-21 and Desikacharya genomes were confirmed.
INTERNATIONAL JOURNAL OF SYSTEMATIC AND EVOLUTIONARY MICROBIOLOGY
(2021)
Article
Ecology
Apostolos-Manuel Koussoroplis, Erik Sperfeld, Sylvain Pincebourde, Alexandre Bec, Alexander Wacker
Summary: The increasing frequency and intensity of summer heatwaves are pushing freshwater zooplankton towards their upper thermal tolerance limits. The dominance of cyanobacteria in phytoplankton due to higher temperatures and prolonged water column stratification may intensify cholesterol limitation in zooplankton, compromising their resistance to future heatwaves. Increasing cholesterol limitation decreases the maximal temperature that Daphnia can withstand and could increase mortality by up to 45% and 72% under low and medium greenhouse gas emission scenarios, respectively.
FRESHWATER BIOLOGY
(2023)
Article
Biotechnology & Applied Microbiology
Don D. Nguyen, Jonathan S. Sauer, Luis P. Camarda, Summer L. Sherman, Kimberly A. Prather, Susan S. Golden, Robert Pomeroy, Pieter C. Dorrestein, Ryan Simkovsky
Summary: The study utilized mass spectrometry to observe and identify molecular signatures from a model predator-prey system involving heterolobosean amoeba predating on filamentous cyanobacteria, finding that MS technology can distinguish grazing signatures specific to different species, prey, or predators. These findings offer valuable information for crop protection strategies.
ALGAL RESEARCH-BIOMASS BIOFUELS AND BIOPRODUCTS
(2022)
Article
Biodiversity Conservation
Sophia Barinova, Thomas Smith
Summary: The article provides a list of algal species and cyanobacteria found in the continental waters of Israel from 1898 to 2022. The research shows an increase in species diversity, with diatoms, cyanobacteria, and green algae being dominant. The data synthesis identifies indicator properties that can be used for water quality monitoring and assessment of aquatic ecosystems.
Article
Environmental Sciences
Pierre Gernez, Maria Laura Zoffoli, Thomas Lacour, Tania Hernandez Farinas, Gabriel Navarro, Isabel Caballero, Tristan Harmel
Summary: Harmful algal blooms (HABs) have significant environmental and economic impacts globally. Detecting and understanding HABs is crucial due to their projected increase in frequency and intensity in the future. While satellite remote sensing has been useful in detecting HABs, identifying the dominant bloom-forming species remains challenging, especially with limited spatial resolution. This study aimed to improve the understanding of HAB diversity through remote sensing analysis of red tides using the high-resolution Sentinel-2 (S2) satellite. Multiple optical bloom types were identified, including cyanobacteria, green Noctiluca scintillans, red N. scintillans, Mesodinium rubrum, Lepidodinium chlorophorum, and various dinoflagellates. Limited by available in situ and S2 observations, as well as spectral resolution, these findings provide valuable insights into the bio-optical diversity of HABs.
REMOTE SENSING OF ENVIRONMENT
(2023)
Article
Biodiversity Conservation
Katarina Novak, Igor Zelnik
Summary: This research aimed to investigate the structure of the benthic diatom community in 16 karst ponds in the alpine region of Slovenia and its relationship with environmental parameters. It found a positive correlation between the number of diatom species and water oxygen saturation, and a negative correlation with NH4-N. The content of NO3-N and NH4-N explained almost 20% of the total variability of diatom community.
Editorial Material
Multidisciplinary Sciences
Jef Huisman, Elke Dittmann, Jutta Fastner, J. Merijn Schuurmans, J. Thad Scott, Dedmer B. Van de Waal, Petra M. Visser, Martin Welker, Ingrid Chorus
Summary: Hellweger et al. suggest that phosphorus limitation will lead to higher concentrations of cyanobacterial toxins in lakes. However, their assumptions about molecular, physiological, and ecological mechanisms lack support and contradict other studies. It is concluded that their take-home message about increased toxicity in Lake Erie due to phosphorus load reduction is fundamentally flawed.
Article
Environmental Sciences
Ruan de Oliveira Carneiro, Carla Ferragut
Summary: In our experiment simulating oligotrophication, we evaluated the effects of a periphyton bioreactor on phytoplankton. The results showed that the bioreactor had a negative impact on the total biovolume of phytoplankton, particularly causing a loss in biomass of a cyanobacteria species.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Environmental Sciences
Renata Aparecida Costa, Carla Ferragut
Summary: This study evaluated the effects of four lake restoration techniques on epipelon in the mentioned eutrophic lake. It was found that aeration and floating macrophytes decreased light availability in the epipelon, causing a dominance of heterotrophic components. On the other hand, flocculant and periphyton bioreactor treatments favored epipelon growth with a higher contribution of autotrophic components. Therefore, the choice of techniques for lake restoration should consider the restoration and maintenance of the benthic environment.
ENVIRONMENTAL MANAGEMENT
(2023)
Article
Virology
Emily Dart, Jed A. A. Fuhrman, Nathan A. A. Ahlgren
Summary: Cyanophages play an important role in regulating their cyanobacteria hosts, but combining analysis of both phage and host populations is necessary for understanding their interactions. Through analyzing five years of metagenomic data, we found that cyanophages exhibit temporal dynamics and are categorized into recurring or non-seasonal groups, which occur persistently, occasionally, or sporadically. The seasonal variation in cyanophage communities is influenced by host availability and different host-range strategies among phages, ultimately impacting the structure of the host community. This study supports the importance of considering both seasonal and stochastic processes in phage-host interactions.
Article
Geography
Jiri Panek, Vit Paszto, Jaroslav Burian, Jakub Bakule, Jakub Lysek
Summary: The study evaluates the state of geoparticipation among Czech municipalities using the Index of geoparticipation, revealing disparities in the use of geoparticipatory tools. It was found that member municipalities of the Healthy Cities network utilize geoparticipatory tools more frequently than others, indicating potential for improvement in geoparticipation practices among Czech municipalities.
Article
Plant Sciences
Kristyna Hoskova, Jiri Neustupa, Petr Pokorny, Adela Pokorna
Summary: This study analyzed the variation in grass phytolith shape using geometric morphometric analysis. The results revealed that the shape of phytoliths is mainly influenced by the long-time diversification of grass subfamilies. There is noticeable variation in phytolith shape in early-diverging lineages of grasses. The findings highlight the potential of using phytoliths to track the evolutionary history and paleoecology of grasses.
Article
Agronomy
Ales Lebeda, Eva Kristkova, Miloslav Kitner, Mark P. Widrlechner, Marko Maras, Mohamed A. El-Esawi
Summary: This study comprehensively described traditional Egyptian lettuce landraces and their sympatric wild relatives. Cluster analysis showed distinct differences among different types of lettuce samples. The study also discussed the origin and potential contributions of lettuce from Egypt.
Article
Chemistry, Analytical
Michal Vorlicek, Tom Stewart, Jasper Schipperijn, Jaroslav Burian, Lukas Rubin, Jan Dygryn, Josef Mitas, Scott Duncan
Summary: The study compared the accuracy of different devices in measuring human movement location, showing strengths and weaknesses in different environments. Holux was more accurate in parks and housing estates, while Garmin performed better in city centers. The location accuracy of Holux and Garmin was found to be comparable to that of Qstarz, making them suitable instruments for locating physical activity.
Article
Computer Science, Interdisciplinary Applications
Jaroslav Burian, Jan Zapletal, Vit Paszto
Summary: This paper describes the Disaggregator tool for the aggregation and disaggregation of spatial data. The tool offers various methods for aggregation and disaggregation, and fills the gap of existing software implementations by being freely available on GitHub for ArcGIS Pro.
EARTH SCIENCE INFORMATICS
(2022)
Article
Multidisciplinary Sciences
Katerina Woodard, Jiri Neustupa
Summary: This study quantitatively assessed the severity of teratogenic deformations in pennate diatoms by using geometric morphometric analysis. The results showed that the deformations were mostly concentrated in the central parts of the ventral outlines and increased asymmetry as frustule size decreased.
Article
Geography
Stanislav Popelka, Jaroslav Burian, Marketa Beitlova
Summary: The comparison of multiple maps is a common process in geography. The study analyzed the use of two map comparison techniques, multiple view and swipe, in an Esri environment through an eye-tracking study with 25 participants. Results showed that multiple view was more effective, especially when comparing four maps. Swipe was more efficient when comparing two maps, particularly in cognitively demanding tasks.
CARTOGRAPHY AND GEOGRAPHIC INFORMATION SCIENCE
(2022)
Article
Marine & Freshwater Biology
Jiri Neustupa, Yvonne Nemcova
Summary: This study investigated the population of Halimeda tuna in four regions on the Adriatic Sea coast, exploring the patterns of segment shape plasticity and its relationship with spatial factors and CaCO3 content using geometric morphometrics. The results showed that segment position on thalli was the main determinant of their shape features, and segment shape could also predict their CaCO3 content.
Article
Geography
Rostislav Netek, Jaroslav Burian, Vit Paszto, Radek Barvir, Jan Chloupek
Summary: This study focuses on the brain drain issue in the cultural and creative industries, specifically in Olomouc city, Czechia. The 'brain drain index' of Czech municipalities has been calculated and visualized in a synthetic map. The study also investigates the brain drain from the local university and presents analytical side-maps and questionnaire survey results.
Article
Agronomy
Miloslav Kitner, Marco Thines, Michaela Sedlarova, Lucie Vaculna, Rita Ban, Katalin Korosi, Maria Iwebor, Tatiana Antonova, Tahir Ali, Petr Nadvornik, Ales Lebeda, Otmar Spring
Summary: This study genetically analyzed P. halstedii samples collected across Europe and discovered two distinct lineages infecting sunflowers, which might represent different species. The evolution of virulence phenotypes was found to be independent of host-specific characteristics.
Article
Computer Science, Information Systems
Karel Macku, Jaroslav Burian, Hynek Vodicka
Summary: This study uses GIS tools to investigate the quality of life index in Czechia, and redesigns the input indicators to better capture real-world phenomena. The results show that the quality of life around larger cities has significantly improved, while rural areas have experienced a slight decrease. The mapping of the resulting index reveals the disparities in quality of life across Czechia and provides new reference data for discussions on the topic.
ISPRS INTERNATIONAL JOURNAL OF GEO-INFORMATION
(2023)
Article
Biodiversity Conservation
Jiri Neustupa, Jan Stastny, Katerina Woodard
Summary: This study focused on the community structure of desmids, one of the most frequent groups of peatland phytobenthos in the Bohemian Massif. It found that several ecologically sensitive taxa were recorded in the fragments of ombrogenous bogs, which currently cover less than 3% of the area. The highest species richness was recorded in several slightly acidic ponds and sinkholes, which were often located outside the existing protected areas.
BIODIVERSITY AND CONSERVATION
(2023)
Article
Economics
Daniel Pavlacka, Dominik Kaim, Krzysztof Ostafin, Jaroslav Burian
Summary: This paper presents a discontinuity-based analysis of settlement pattern changes in the Tesin Silesia region, which spans the Czechia-Poland cross-border area. The study applies the regression discontinuity design method to measure spatial discontinuity and combines spatial, statistical, and cartographic methods to describe the spatiotemporal changes. The observed differences have been evolving over 150 years, starting from a unified territory and later divided by a national border, leading to distinct development trajectories in different areas.
PAPERS IN REGIONAL SCIENCE
(2023)
Article
Plant Sciences
Lubos Majesky, Michal Hrones, Miloslav Kitner, Lenka Valova, Lenka Martonfiova, Bartosz Jan Plachno, Fabio Conti, Martin Dancak
Summary: This study investigated the ploidy level, genome size, seed structure, and genetic differentiation of taxa of Pinguicula vulgaris agg. in Europe, particularly focusing on the taxon P. bohemica. The results confirmed that P. bohemica and all other taxa are octoploid, and the absolute genome size differentiates the morphologically similar taxa. Molecular markers revealed distinct groups within the central European populations of P. vulgaris agg., including a new lineage named P. polonica. P. bohemica and P. polonica showed significant genetic differentiation from P. vulgaris s.s. and P. vulgaris var. bicolor. Spatial isolation played a significant role in the divergence of isolated lineages within P. vulgaris agg.
Article
Regional & Urban Planning
Vit Paszto, Jaroslav Burian, Karel Macku
Summary: The article provides a detailed micro-study on changes in authors' behavior before and during the COVID-19 pandemic using Google Location Service data. Despite the small sample size, it showcases the potential for accurate data processing and highlights privacy concerns when using such detailed data.
INTERNATIONAL JOURNAL OF E-PLANNING RESEARCH
(2021)
