Article
Environmental Sciences
Alistair J. Cheal, Michael J. Emslie, Leanne M. Currey-Randall, Michelle R. Heupel
Summary: The study found that fish data from underwater visual census (UVC) and baited remote underwater video stations (BRUVS) on the Great Barrier Reef in Australia showed similarities in total species richness but differences in sub-group species richness, species occurrences, relative abundances of taxa, and assemblage structure. The integration of these two methods in monitoring programs provides a more complete assessment of reef fish status for managers.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2021)
Article
Environmental Sciences
Marcos B. Lucena, Thiago C. Mendes, Moyses C. Barbosa, Cesar A. M. M. Cordeiro, Linda M. Eggertsen, Carlos E. L. Ferreira
Summary: The study found that the color of light did not impact total fish density or species richness per transect, but the density of certain species varied based on the color used. Red light was associated with higher frequency of occurrence for most species, while white light resulted in decreased abundance for some fish species.
MARINE ENVIRONMENTAL RESEARCH
(2021)
Article
Oceanography
Anais Rey, Frederique Viard, Anne Lize, Erwan Corre, Alice Valentini, Pierre Thiriet
Summary: Efficient biodiversity monitoring programs are crucial for assessing marine ecosystem health. Underwater visual census (UVC) is commonly used to survey fish assemblages, but it may not accurately capture all species. In this study, environmental DNA (eDNA) metabarcoding was used as a complementary method to UVC and showed promising results in providing comprehensive diversity data for coastal rocky reef fish assemblages. Both methods revealed spatial and temporal variations in fish communities, highlighting the importance of combining UVC and eDNA metabarcoding for monitoring surveys.
OCEAN & COASTAL MANAGEMENT
(2023)
Article
Multidisciplinary Sciences
Kyle H. Clark, Deborah D. Iwanowicz, Luke R. Iwanowicz, Sara J. Mueller, Joshua M. Wisor, Casey Bradshaw-Wilson, William B. Schill, J. R. Stauffer, Elizabeth W. Boyer
Summary: Freshwater mussels are crucial to riverine ecosystems, but their decline worldwide has raised concerns for conservation. This study reveals the invasive Round Goby's propensity to prey upon indigenous freshwater mussels, posing a growing threat to both common and endangered species. The introduction of Round Goby to North American freshwaters has significant implications for conservation and management.
SCIENTIFIC REPORTS
(2022)
Article
Chemistry, Analytical
Eduardo Ochoa, Nuno Gracias, Klemen Istenic, Josep Bosch, Patryk Cieslak, Rafael Garcia
Summary: This paper presents a novel approach to provide navigation capabilities for ROVs in complex environments. By leveraging the ability of omnidirectional multi-camera systems, a 360 degrees real-time point cloud of nearby objects or structures is created within a visual SLAM framework. A strategy to assess the risk of obstacles in the vicinity is also developed, and the system can generate warnings for the robot to perform evasive maneuvers when approaching dangerous obstacles in real-world scenarios.
Article
Behavioral Sciences
Caitlyn Synyshyn, Alexandra E. Green-Pucella, Sigal Balshine
Summary: This study investigated the differences in nonmating behaviors between sneaker and guarder males in the round goby species, finding that sneaker males were more active, explorative, bold, and behaviorally plastic compared to guarder males. This research helps expand our understanding of the variations in alternative reproductive tactics, particularly in nonmating contexts.
Article
Biochemistry & Molecular Biology
Tania Valdivia-Carrillo, Axayacatl Rocha-Olivares, Hector Reyes-Bonilla, Jose Francisco Dominguez-Contreras, Adrian Munguia-Vega
Summary: This study compared results from underwater visual censuses and eDNA metabarcoding fish surveys, showing that eDNA detected more species. Both survey methods recovered known biodiversity gradients and biogeographic differences, but eDNA captured diversity over broader geographical and bathymetric scales.
MOLECULAR ECOLOGY RESOURCES
(2021)
Article
Geography, Physical
Hao Wang, Shixin Sun, Peng Ren
Summary: Underwater camera images often suffer from visual degradation issues, and existing studies tend to address these issues separately, resulting in inconsistent improvements in underwater image visibility. To overcome this limitation, we propose a smart protocol for underwater image enhancement, which utilizes reinforcement learning to optimize the parameter values for a comprehensive cascade of seven enhancement techniques. Our methodology, referred to as meta underwater camera (MUC), outperforms state-of-the-art methods in improving underwater image visibility.
ISPRS JOURNAL OF PHOTOGRAMMETRY AND REMOTE SENSING
(2023)
Article
Agriculture, Dairy & Animal Science
Pavel Franta, Radek Gebauer, Lukas Vesely, Milos Buric, Natalia Z. Szydlowska, Borek Drozd
Summary: Neogobius melanostomus, an invasive fish species, poses a potential threat to crayfish and A. aquaticus populations in river tributaries, potentially causing disruptions to the macrozoobenthic community and triggering trophic cascades. Its non-selective feeding behavior may have significant ecological impacts on the ecosystem.
Article
Agricultural Engineering
Honglei Wei, Xiangzhi Kong, Xianyi Zhai, Qiang Tong, Guibing Pang
Summary: This study proposed a sea cucumber tracking algorithm based on the KCF framework, which tracked the head and tail of the sea cucumber and calculated the scale change based on distance, achieving good tracking performance.
INTERNATIONAL JOURNAL OF AGRICULTURAL AND BIOLOGICAL ENGINEERING
(2023)
Article
Biodiversity Conservation
Tobias Backstroem, Carola Winkelmann
Summary: This study investigated the effects of salinity on oxygen consumption and behavior in the invasive round goby and the native European perch. The results showed that the invasive round goby is more sensitive to salinity changes, while the native European perch is less affected. This finding suggests that invasive species may be less tolerant to environmental changes and highlights the species-specific nature of salinity effects.
Article
Geography, Physical
Mengkun She, David Nakath, Yifan Song, Kevin Koeser
Summary: Underwater cameras are often protected by spherical glass windows, which can withstand high water pressures and provide a large field of view without distortion. However, aligning the lens perfectly with the center of the dome is challenging and can result in refraction patterns that affect the accuracy of the camera. This study presents a non-iterative method to compute the center of refraction and a calibration procedure to estimate lens decentering.
ISPRS JOURNAL OF PHOTOGRAMMETRY AND REMOTE SENSING
(2022)
Article
Optics
Yujin Liu, Zhong Ji, Guobiao Cen, Hengchao Sun, Haibao Wang, Chuanxi Zhao, Zhong Lin Wang, Wenjie Mai
Summary: Inspired by human visual cells, researchers developed a high-resolution perovskite-based color camera that uses narrowband red, green, blue, and broadband white perovskite photodetectors as imaging sensors. The red, green, and blue perovskite photodetectors mimic cone cells for color imaging, while the white perovskite photodetector mimics rod cells for weak-light imaging. The camera can capture high-resolution color images in diffuse mode.
LIGHT-SCIENCE & APPLICATIONS
(2023)
Article
Engineering, Electrical & Electronic
Peng Chi, Zhenmin Wang, Haipeng Liao, Ting Li, Yuhai Wang, Xiangmiao Wu, Jiyu Tian, Qin Zhang
Summary: This paper proposes an underwater multicamera-IMU calibration system to improve the accuracy and efficiency of underwater pose estimation. The unstable checkerboard corner recognition during underwater intrinsic parameter calibration is addressed using a prediction-detection method. An intrinsic-extrinsic parameters joint optimization method is also proposed. Extensive experiments validate the feasibility and effectiveness of the proposed method.
IEEE SENSORS JOURNAL
(2023)
Article
Marine & Freshwater Biology
Yong-Deuk Lee, Gang-Min Lee, Jong-Yul Park, Woo-Seok Gwak
Summary: This study compared underwater visual census (UVC) and eDNA metabarcoding as survey methods for fish fauna in the coastal waters of Busan and Ulsan in Southeast Korea. The results showed that eDNA metabarcoding can enable fast and wide fish diversity surveys, especially for microhabitats in coastal areas. Therefore, eDNA could be an important complement to traditional surveys for monitoring marine biodiversity.
OCEAN SCIENCE JOURNAL
(2022)
