Article
Biodiversity Conservation
Juergen Geist, Rebecca Hoess, Johan Rytterstam, Hakan Soederberg
Summary: Functional and oxygenated riverbeds are important habitats for endangered stream species. Stream bed restoration measures, such as substrate raking, can improve habitat quality by decreasing substrate compaction and increasing oxygen supply. This study found that the effects of restoration measures can last for at least two years, making them a useful long-lasting measure, especially in streams with limited fine sediment input and near-natural flow regimes.
Article
Environmental Sciences
F. LeBlanc, R. Steeves, V. Belliveau, F. Akaishi, N. Gagne
Summary: The study aimed to detect the brook floater, a species in Atlantic Canada of Special Concern, using environmental DNA technology to support its conservation and monitoring efforts. A survey found brook floater DNA at some sampled sites, always below the detection limit, with the eastern pearlshell as a successful positive control. Temporal variability of eDNA at a known brook floater population site showed minimal changes from May to September.
AQUATIC CONSERVATION-MARINE AND FRESHWATER ECOSYSTEMS
(2021)
Article
Environmental Sciences
Grant M. Graves, Ralph S. Tanner, Jason R. Vogel, Kara B. De Leon, Alex W. Walls
Summary: Enterolert, a fluorogenic substrate test, was evaluated for its accuracy in isolating and quantifying Enterococcus and/or Streptococcus in freshwater environments. The results showed that Enterolert was not exclusively selective for Enterococcus, and sediment and polluted waterbodies could affect the presumed concentrations. Further research is needed to evaluate the effectiveness and selectivity of the medium used for the fluorogenic substrate test.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Ecology
Brandon J. Sansom, Sean J. Bennett, Joseph F. Atkinson
Summary: This study examined the variation of mussel burrow position across different species in gravel-bedded rivers in the northeastern USA and how it affects benthic habitat. The burrow position was found to be influenced by species, shell morphology, sculpture type, and river characteristics. The study also found that mussel burrow position affects bed roughness and near-bed flow patterns. These findings contribute to a better understanding of the biophysical processes influenced by mussel burrow position and can aid conservation and restoration efforts.
FRESHWATER SCIENCE
(2022)
Article
Ecology
James H. Thorp, Walter K. Dodds, Caleb J. Robbins, Alain Maasri, Emily R. Arsenault, Jackob A. Lutchen, Flavia Tromboni, Barbara Hayford, Mark Pyron, Gregory S. Mathews, Anne Schechner, Sudeep Chandra
Summary: This article analyzes the nature of research in freshwater macrosystem biology, focusing on lotic studies, from both conceptual and current research perspectives. It describes the boundaries of permanent and transitional lotic macrosystems across spatial extents, contrasts ecosystem vs. macrosystem research, and provides examples of aquatic macrosystems ecology projects in the USA. The article also recommends incorporating large-scale lotic concepts developed over the last 40 years as the basis for lotic macrosystem studies and suggests future research directions in areas of climate change and teleconnections among distant organisms and systems.
Review
Biodiversity Conservation
Ronaldo Sousa, Dariusz Halabowski, Anna M. Labecka, Karel Douda, Olga Aksenova, Yulia Bespalaya, Ivan Bolotov, Juergen Geist, Hugh A. Jones, Ekaterina Konopleva, Michael W. Klunzinger, Carlos A. Lasso, Iga Lewin, Xiongjun Liu, Manuel Lopes-Lima, Jon Mageroy, Musa Mlambo, Keiko Nakamura, Mitsunori Nakano, Martin osterling, John Pfeiffer, Vincent Prie, Lucas R. P. Paschoal, Nicoletta Riccardi, Rogerio Santos, Spase Shumka, Allan K. Smith, Mikhail O. Son, Amilcar Teixeira, Frankie Thielen, Santiago Torres, Simone Varandas, Ilya V. Vikhrev, Xiaoping Wu, Alexandra Zieritz, Joana G. Nogueira
Summary: Anthropogenic freshwater habitats offer potential for long-term conservation of freshwater mussels, but may also act as ecological traps. These habitats are not a cure-all for conservation problems, and more research is needed to understand the trade-offs between human use and conservation within them.
GLOBAL CHANGE BIOLOGY
(2021)
Article
Water Resources
Hao Wu, George Constantinescu
Summary: This study investigates the changes in flow structure, drag forces, sediment entrainment mechanisms, and dilution of filtered water jet with increasing angle of attack for freshwater mussels in rivers. The results show that increasing angle of attack leads to greater drag forces on the mussel shell, stronger flow circulation, and increased shear stresses near the mussel, indicating potential for local scouring.
ADVANCES IN WATER RESOURCES
(2022)
Article
Mathematics, Applied
Qimei Zhou, Fengde Chen
Summary: This research investigates a discrete amensalism system with the Beddington-DeAngelis functional response and Allee effect, and discovers the crucial role of the Allee effect in stabilizing population sizes through theoretical analysis and numerical simulations.
QUALITATIVE THEORY OF DYNAMICAL SYSTEMS
(2023)
Article
Multidisciplinary Sciences
Deeptajyoti Sen, Sudeshna Sinha
Summary: The study reveals that under the Allee Effect, extreme events occur in all three population densities once a critical value of the Allee parameter is reached, while additive noise can significantly reduce the probability of extreme events in the system.
SCIENTIFIC REPORTS
(2021)
Article
Environmental Sciences
Maria Brueggemann, Kerstin Hund-Rinke, Walter Boehmer, Christoph Schaefers
Summary: A new test system mimicking running water conditions was developed for chronic toxicity testing of aquatic macroinvertebrates, which was proven to be effective in testing with stonefly larvae.
ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY
(2021)
Article
Mathematical & Computational Biology
Sangeeta Saha, Guruprasad Samanta
Summary: In an environment, predators can switch between different prey populations to increase their overall growth rate. This study proposes a system with two prey populations and one predator, where the predator exhibits switching behavior between the prey species. The system is well-defined and the stability analysis shows the existence of stable and unstable equilibrium points.
INTERNATIONAL JOURNAL OF BIOMATHEMATICS
(2023)
Article
Marine & Freshwater Biology
Ava M. Laszlo, John S. Placyk, Lance R. Williams, Marsha G. Williams, Joshua A. Banta
Summary: Our study used high-resolution, multivariate ecological niche modeling to test the ecological differentiation between two potentially threatened mussel species in East Texas. The results showed that these two species were not ecologically different, consistent with other studies. By ground-truthing the modeling approach, we were able to accurately distinguish suitable habitat and identify new records. This approach has implications for riverine environment research and conservation science.
Article
Environmental Sciences
Marco Bertoli, Paolo Pastorino, Davide Lesa, Monia Renzi, Serena Anselmi, Marino Prearo, Elisabetta Pizzul
Summary: This study investigated microplastics contamination in a macrobenthic invertebrate community in the Vipacco River, northeast Italy, finding that microplastics were found in 48.5% of taxa with the highest accumulation in collector gatherers and predators, likely originating from urban wastewater discharge points along the river.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Mathematical & Computational Biology
Manoj K. Singh, Brajesh K. Singh, Poonam, Carlo Cattani
Summary: The effects of the strong Allee effect on the dynamics of the modified Leslie-Gower predator-prey model, in the presence of nonlinear prey-harvesting, have been investigated. The study found that the behaviors of the described mathematical model are positive and bounded for all future times. The conditions for the local stability and existence for various distinct equilibrium points have been determined.
MATHEMATICAL BIOSCIENCES AND ENGINEERING
(2023)
Article
Mathematics, Interdisciplinary Applications
Marcelo N. Kuperman, Guillermo Abramson
Summary: The search for more realistic models for interacting species has led to adaptations of the original Lotka-Volterra equations, including the Allee effect and different types of functional response. However, a correct implementation of both ideas together requires a careful formulation, as density dependent carrying capacity combined with the Allee effect can lead to meaningless effects. Specific difficulties in predator-prey and two-species competition models are illustrated, along with the proposed solution of carefully including corresponding cubic terms.
CHAOS SOLITONS & FRACTALS
(2021)
Article
Fisheries
Yusuke Miyazaki, Akira Terui
ICHTHYOLOGICAL RESEARCH
(2016)
Article
Fisheries
Yusuke Miyazaki, Akira Terui
ICHTHYOLOGICAL RESEARCH
(2016)
Article
Ecology
Akira Terui, Takumi Akasaka, Junjiro N. Negishi, Fumihiko Uemura, Futoshi Nakamura
ECOLOGICAL RESEARCH
(2017)
Article
Limnology
Akira Terui, Yusuke Miyazaki
Article
Limnology
Akira Terui, Yusuke Miyazaki
Article
Plant Sciences
Kaoru Kakinuma, Akira Terui, Takehiro Sasaki, Asuka Koyama, Undarmaa Jamsran, Toshiya Okuro, Kazuhiko Takeuchi
JOURNAL OF VEGETATION SCIENCE
(2017)
Article
Limnology
Keita Ooue, Akira Terui, Hirokazu Urabe, Futoshi Nakamura
Article
Biology
Akira Terui, Keita Ooue, Hirokazu Urabe, Futoshi Nakamura
PROCEEDINGS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES
(2017)
Article
Biodiversity Conservation
Masashi Hanioka, Yuichi Yamaura, Satoshi Yamanaka, Masayuki Senzaki, Kazuhiro Kawamura, Akira Terui, Futoshi Nakamura
BIODIVERSITY AND CONSERVATION
(2018)
Article
Biodiversity Conservation
Nobuo Ishiyama, Masahiro Ryo, Taiga Kataoka, Shigeya Nagayama, Masanao Sueyoshi, Akira Terui, Terutaka Mori, Takumi Akasaka, Futoshi Nakamura
CONSERVATION BIOLOGY
(2018)
Article
Multidisciplinary Sciences
Akira Terui, Nobuo Ishiyama, Hirokazu Urabe, Satoru Ono, Jacques C. Finlay, Futoshi Nakamura
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2018)
Article
Ecology
Akira Terui, Yusuke Miyazaki, Akira Yoshioka, Kenzo Kaifu, Shin-ichiro S. Matsuzaki, Izumi Washitani
ECOLOGY AND EVOLUTION
(2014)
Article
Ecology
Akira Terui, Yusuke Miyazaki, Akira Yoshioka, Taku Kadoya, Fred Jopp, Izumi Washitani
FRESHWATER SCIENCE
(2014)
Article
Ecology
Akira Terui, Junjiro N. Negishi, Nozomi Watanabe, Futoshi Nakamura