Article
Environmental Sciences
Weilun Li, Jiansong Qiu, Peiyu Lei, Xiaohong Chen, Fei Fan, Xiaojun Deng, Yingen Dai, Yanqing Deng, Kexiong Wang, Zhigang Mei
Summary: This study aimed to investigate the activities of Phocoenidae in fresh and coastal waters by recording their echolocation clicks using a real-time passive acoustic monitoring (PAM) system. The developed Real-time Porpoise Click Detector-II (RPCD-II) was deployed under a docked fishing vessel and successfully detected signals of Yangtze finless porpoise in real-time. The results were consistent with another control device, validating the ability of RPCD-II for real-time detection in the field.
FRONTIERS IN MARINE SCIENCE
(2022)
Article
Multidisciplinary Sciences
Kaitlin E. Frasier, Lance P. Garrison, Melissa S. Soldevilla, Sean M. Wiggins, John A. Hildebrand
Summary: The study demonstrates that combining various data types can improve the understanding of temporal and spatial distribution trends of cetacean populations in the Gulf of Mexico, with the use of stationary passive acoustic monitoring data significantly enhancing predictive capabilities.
SCIENTIFIC REPORTS
(2021)
Article
Environmental Sciences
Tobias Schaffeld, Joseph G. Schnitzler, Andreas Ruser, Johannes Baltzer, Max Schuster, Ursula Siebert
Summary: Harbor porpoises from the North Sea periodically enter large rivers like the Elbe or the Weser. Their migration to the port of Hamburg, located 97 km upstream, is believed to be linked to the presence of anadromous prey species. Signals emitted by an acoustic flowmeter in the port, with specific characteristics, have the potential to induce temporary threshold shift (TTS) in harbor porpoise hearing. The study recommends reducing the source levels of the flowmeter to avoid potential effects on harbor porpoises, highlighting the importance of a mandatory authorization process for underwater sound use with potential effects on aquatic life.
FRONTIERS IN MARINE SCIENCE
(2022)
Article
Ecology
Jamie Macaulay, Al Kingston, Alex Coram, Michael Oswald, Rene Swift, Doug Gillespie, Simon Northridge
Summary: A passive acoustic monitoring system was developed to track the behavior of harbour porpoises around fishing nets. By localizing their acoustic clicks, highly detailed 3D movement data can be obtained. The study revealed various behaviors of harbour porpoises in proximity to nets, including active foraging.
METHODS IN ECOLOGY AND EVOLUTION
(2022)
Article
Engineering, Marine
Rafael Aguiar, Gianluca Maguolo, Loris Nanni, Yandre Costa, Carlos Silla
Summary: Passive acoustic monitoring (PAM) is a noninvasive technique for wildlife surveillance, where machine learning is useful for identifying species based on audio recordings. The experimental protocols using PAM filters were not intended to improve accuracy rates, but rather to provide more reliable results in the classification system.
JOURNAL OF MARINE SCIENCE AND ENGINEERING
(2021)
Article
Environmental Sciences
Liang Fang, Min Li, Xinxing Wang, Yujian Chen, Tao Chen
Summary: The Jinwan Offshore Wind Farm in the Pearl River Estuary has had an impact on the local marine mammal population, particularly the Indo-Pacific finless porpoise. A study using a recording system found that the wind farm area was an important habitat for the porpoises, but they showed avoidance behavior during pile driving activity. There was a negative correlation between porpoise detection and pile driving, indicating the need for acoustic protection measures in future offshore wind farm developments.
FRONTIERS IN MARINE SCIENCE
(2023)
Article
Environmental Sciences
Melinda L. Rekdahl, Sarah G. Trabue, Carissa D. King-Nolan, Samantha Strindberg, Howard C. Rosenbaum
Summary: This study investigated the spatiotemporal distribution of harbour porpoise in the NY-NJ Harbour Estuary from 2018-2020. The results showed that harbour porpoises were present at low levels year-round, with seasonal peaks in winter to spring (February to June). Sea surface temperature and chlorophyll-a concentration were significant predictors of harbour porpoise presence, but further research is needed to understand this relationship.
FRONTIERS IN MARINE SCIENCE
(2023)
Article
Ecology
Rebecca V. Van Hoeck, Avery B. Paxton, DelWayne R. Bohnenstiehl, J. Christopher Taylor, F. Joel Fodrie, Charles H. Peterson
Summary: By comparing the soundscape and community development of two artificial reefs, passive acoustic monitoring was shown to be an effective complement to traditional monitoring methods, providing a more comprehensive view of community development.
Article
Engineering, Marine
Matteo Sanguineti, Carlo Guidi, Vladimir Kulikovskiy, Mauro Gino Taiuti
Summary: Passive acoustic monitoring of cetaceans provides unique behavioral information at great depths and long ranges, but real-time data collection, transfer, and analysis are challenging. Two methods include hydrophone systems under buoys for wireless data transmission and acoustic detector networks integrated within submarine neutrino telescopes.
JOURNAL OF MARINE SCIENCE AND ENGINEERING
(2021)
Article
Environmental Sciences
Douglas Gillespie, Michael Oswald, Gordon Hastie, Carol Sparling
Summary: This article reports on the design and performance of a seabed mounted sensor platform for monitoring the fine scale movements of cetaceans and pinnipeds around operational tidal turbines. The system uses high-frequency multibeam active sonars for tracking animals in the horizontal plane and offsetting the vertical angle of the sonars to resolve a vertical component. It also utilizes hydrophones for measuring angles to cetacean echolocation clicks. The system proved highly reliable during field tests and will be deployed close to an operational turbine.
FRONTIERS IN MARINE SCIENCE
(2022)
Article
Biodiversity Conservation
Samuel R. P-J. Ross, Nicholas R. Friedman, Masashi Yoshimura, Takuma Yoshida, Ian Donohue, Evan P. Economo
Summary: The study conducted in Okinawa identified that most commonly used acoustic indices are highly sensitive to confounding sonic conditions, emphasizing the challenges of working with large acoustic datasets in the field. Practical recommendations for the use of acoustic indices were provided based on study design, aiming to identify the most useful indices for rapid biodiversity monitoring and management of natural soundscapes worldwide.
ECOLOGICAL INDICATORS
(2021)
Article
Multidisciplinary Sciences
Juan Sebastian Canas, Maria Paula Toro-Gomez, Larissa Sayuri Moreira Sugai, Hernan Dario Benitez Restrepo, Jorge Rudas, Breyner Posso Bautista, Luis Felipe Toledo, Simone Dena, Adao Henrique Rosa Domingos, Franco Leandro de Souza, Selvino Neckel-Oliveira, Anderson da Rosa, Vitor Carvalho-Rocha, Jose Vinicius Bernardy, Jose Luiz Massao Moreira Sugai, Carolina Emilia dos Santos, Rogerio Pereira Bastos, Diego Llusia, Juan Sebastian Ulloa
Summary: This paper introduces a large-scale dataset of anuran amphibian calls recorded by passive acoustic monitoring (PAM). The dataset includes 27 hours of expert annotations for 42 different species from two Brazilian biomes. The open access to the dataset and provided resources aim to encourage the solving of the problem of anuran call identification and contribute to conservation policy.
Article
Biodiversity Conservation
Julia Martinez Pardo, Paula Cruz, Sergio Moya, Esteban Pizzio, Fernando Foletto, Facundo Robino, Jesica Aquino, Sebastian Costa, Yara Barros, Falcao Cleo, Mario S. Di Bitetti, Maria Eugenia Iezzi, Agustin Paviolo, Carlos De Angelo
Summary: Poaching has significant impacts on wild animal populations, especially in tropical regions. This study developed a predictive map of poaching presence using passive acoustic recorders and occupancy models. The results showed that the study region is under high poaching pressure, even within protected areas. The methods and maps developed in this study could serve as a tool for implementing anti-poaching strategies.
BIOLOGICAL CONSERVATION
(2022)
Article
Ecology
Eva Catharina M. Karlsson, Harold Tay, Paul Imbun, Alice C. Hughes
Summary: Low-cost options for long-term acoustic monitoring in terrestrial ecology are increasingly available, but integration with sensors for additional data logging is rare. A hardware system called the Kinabalu Recorder, designed for both acoustic and environmental data logging, offers a cost-effective solution that promotes cross-field collaboration.
METHODS IN ECOLOGY AND EVOLUTION
(2021)
Article
Ecology
Adam Patrick Dixon, Matthew E. Baker, Erle C. Ellis
Summary: Intensive agricultural landscapes pose challenges to increasing wildlife diversity, but recent advances in acoustic data collection and high-resolution habitat mapping have the potential to address this challenge. This study examined the relationship between habitat characteristics and avian biodiversity in intensive agricultural landscapes in Iowa. The results showed associations between noncrop vegetation and vocalizing bird richness, but challenges remain in promoting grassland birds in row crop landscapes.
ECOLOGICAL APPLICATIONS
(2023)
Article
Ornithology
Antoine Grissot, Isla M. Graham, Lucy Quinn, Vegard S. Brathen, Paul M. Thompson
Article
Multidisciplinary Sciences
Barbara J. Cheney, Paul M. Thompson, Line S. Cordes
SCIENTIFIC REPORTS
(2019)
Article
Ecology
Gordon Hastie, Nathan D. Merchant, Thomas Gotz, Debbie J. F. Russell, Paul Thompson, Vincent M. Janik
ECOLOGICAL APPLICATIONS
(2019)
Review
Fisheries
Caroline J. Wiernicki, Dong Liang, Helen Bailey, David H. Secor
REVIEWS IN FISHERIES SCIENCE & AQUACULTURE
(2020)
Article
Marine & Freshwater Biology
Laura D. Williamson, Beth E. Scott, Megan R. Laxton, Fabian E. Bachl, Janine B. Illian, Kate L. Brookes, Paul M. Thompson
Summary: Understanding the spatiotemporal distribution of harbor porpoises, influenced by seasonal prey availability, daylight, and competition with bottlenose dolphins, can shed light on management strategies and interactions with offshore industries. The study found that porpoises had the highest occurrence probability on an offshore sandbank with low foraging activity, shifting their distribution throughout the summer and autumn to potentially avoid overlap with dolphins.
MARINE MAMMAL SCIENCE
(2022)
Article
Ecology
D. H. Secor, H. Bailey, A. Carroll, V Lyubchich, M. H. P. O'Brien, C. J. Wiernicki
Summary: Fishes commonly exhibit diel rhythms in movements which are affected by changes in environmental or ecological conditions. In the U.S. Mid-Atlantic Bight, black sea bass showed a remarkable 4-month record of persistent diurnal vertical movements from June to October 2019, with sunlight altitude playing a dominant role throughout the series.
Article
Ecology
H. Bailey, A. D. Fandel, K. Silva, E. Gryzb, E. McDonald, A. L. Hoover, M. B. Ogburn, A. N. Rice
Summary: Passive acoustic monitoring (PAM) was used to study the seasonal occurrence of bottlenose dolphins and individual identification through signature whistles. The study showed high site fidelity of dolphins off Maryland, with movements between the Chesapeake Bay and the Atlantic coast. A habitat-based density model was developed using environmental conditions, which could predict relative dolphin abundance and inform management decisions in the region.
Article
Ecology
Barbara J. Cheney, Julian Dale, Paul M. Thompson, Nicola J. Quick
Summary: This study compares the differences in body morphometric measurements between UAS photogrammetry and laser photogrammetry in cetaceans and explores whether UAS measurements of body width can remotely determine pregnancy status in dolphins. The results show that there is no significant difference in length measurements between UAS and laser photogrammetry, and UAS measurements of body width are related to pregnancy status. However, photogrammetry techniques alone cannot accurately determine the sex or age class of dolphins.
REMOTE SENSING IN ECOLOGY AND CONSERVATION
(2022)
Article
Biology
Virginia Iorio-Merlo, Isla M. Graham, Rebecca C. Hewitt, Geert Aarts, Enrico Pirotta, Gordon D. Hastie, Paul M. Thompson
Summary: The study found that marine predators, such as harbour seals, have good memory of foraging patches and integrate this memory with recent prey encounters to adjust their fine-scale movement and foraging behavior.
PROCEEDINGS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES
(2022)
Article
Ecology
Nicole Barbour, Alexander J. J. Robillard, George L. L. Shillinger, Vyacheslav Lyubchich, David H. H. Secor, William F. F. Fagan, Helen Bailey
Summary: This study used machine learning methods to analyze the vertical movement of leatherback turtles. The study clustered the movements into two groups using DTW and classified the dives within each group based on shape using CNN. The results showed that the vertical movement behaviors and shapes varied between the groups and were associated with environmental factors.
Article
Ecology
Dong Liang, Helen Bailey, Aimee L. Hoover, Scott Eckert, Patricia Zarate, Joanna Alfaro-Shigueto, Jeffrey C. Mangel, Nelly de Paz Campos, Javier Quinones Davila, David Sarmiento Barturen, Juan M. Rguez-Baron, Christina Fahy, Amanda Rocafuerte, Callie Veelenturf, Marino Abrego, George L. Shillinger
Summary: Species distribution models have been widely used in various systems, with applications including invasive species management, climate change evaluation, and conservation. However, the limitations of using a single type of data may lead to uncertainty in predictions, especially with sparse data. This study developed an integrated species distribution model (ISDM) that combines fishery observations and satellite telemetry data to enhance understanding and management efforts for the leatherback turtle in the East Pacific Ocean.
Article
Biology
I. M. Graham, D. Gillespie, K. C. Gkikopoulou, G. D. Hastie, P. M. Thompson
Summary: Mitigation measures to disperse marine mammals prior to pile-driving, such as acoustic deterrent devices and piling soft starts, have uncertain efficacy. However, through the use of portable hydrophone clusters, it has been demonstrated that harbour porpoises respond positively to these measures by swimming away from the sound sources.
Article
Environmental Sciences
Nicole Barbour, George L. Shillinger, Aimee L. Hoover, Sean A. Williamson, Victoria J. Coles, Dong Liang, William F. Fagan, Helen Bailey
FRONTIERS IN MARINE SCIENCE
(2020)
Article
Ecology
Paul M. Thompson, Isla M. Graham, Barbara Cheney, Tim R. Barton, Adrian Farcas, Nathan D. Merchant
ECOLOGICAL SOLUTIONS AND EVIDENCE
(2020)