... including biomass and energy density derived from an integrated dataset of concurrent active acoustics, net tows, and marine mammal observations (2018–2022). Overall, prey metrics were positively correlated with humpback whale presence, with increasing trends modified by seasonal (early versus late foraging...

... the acoustic data. There was a strong link between copepod distribution and environmental variables (e.g. water depth and tidal cycle) (generalized additive models, P < .001). Copepods were present in 49.8% of the fjord, with a median density of 3240 copepods m⁻³ and 0.26 g C m...

... regional and global ocean observation strategies. echosounder fisheries acoustics water column sonar data data standardization distributed computing cloud computing open-source software National Science Foundation 10.13039/100000001 1849930 National Oceanic and Atmospheric Administration...

... pelagic communities is unclear. Using fisheries acoustics data collected in the Central California current from 2013 to 2018, we found that during the warmest years of a large marine heatwave (2015–2016), the estimated center of mass depth of mesopelagic fishes deepened by up to 100 m compared...

... the male’s head and objects in his bill as it passes repeatedly across the entrance. Because the bower may affect the auditory as well as the visual parts of the multimodal male display we investigated bower acoustic properties by playing standard sounds from multiple court positions, recording the resulting...

... vibration or resonance. ⁴ It was observed that a resting string on an instrument would spontaneously vibrate and resound in sympathy when a string tuned to the same pitch was plucked nearby. This acoustic phenomenon stood out as one instantiation of sympathy favored by Renaissance thinkers...

..., on the environment. Fish aggregate at platforms, but little is known about the extent of these effects in the North Sea and the causes of variability in these associations. Here, an uncrewed surface vessel (USV) was used to collect fisheries acoustic data on distributions of schooling and non-schooling fish around...

... Spanish Institute of Oceanography 10.13039/501100011034 Figure 1. Two distinct approaches for assigning catch species proportions to echo-traces in a trawl-acoustic survey. In the direct assignment of neighbour catch proportions (a), species proportions of a reference trawl catch are directly allocated...

... of abundance and understand within system connectivity for spawning runs in 2020 and 2021. Methods Data from mobile side‐scan sonar surveys and detections of acoustically tagged adults on stationary telemetry receivers were analyzed in an integrated model to estimate spawning season abundance and examine...

... and advice at a time when there is a sense of urgency. fisheries acoustics fish behaviour purse seine ecosystem approach High Arctic university centre polar research management advice leadership roles NPI Ministry of Climate and Environment 10.13039/501100021823 Is there a rationale...

... of coexisting organisms, including fish, zooplankton, jellyfish, and squid, and hence there is uncertainty about the proportion of the acoustic backscatter in these layers that can be attributed to mesopelagic fish. Here, acoustic targets were classified using a multi-frequency acoustic classification algorithm...

...:https://dbpia.nl.go.kr/pages/standard-publication-reuse-rights) Correspondence D. A. Gravenhof Email: [email protected] acoustics fisheries tags and tagging The relatively high proportion of stocked Chinook Salmon that were lost to predation in this study is higher than salmonid predation values reported...

...Brandyn M Lucca; Joseph D Warren; Caroline Durif Shelled pteropods comprise a diverse group of pelagic gastropods with varying shell shapes that are difficult to acoustically model. These animals are generally referred to as “elastic-shelled” scatterers due to the presence of a thin shell...

... Objective Advances in acoustic telemetry have assisted biologists in understanding migration patterns, space use, survival, and the effects of human influences on aquatic species. Using fine‐scale positioning, fisheries managers can quantify home range size fluctuations throughout the year and even...

... echosounder data could increase the taxonomic resolution of acoustic surveys and reduce the dependence on net and trawl samples for ‘ground truthing’. Supervised classification with broadband echosounder data is limited by the acquisition of validated data required to train machine learning algorithms...

...Sarper Ozharar; Jessica L Ware; Yue Tian; Yangmin Ding; Phyllis Weintraub For the acoustic analysis of the cicada sounds, a single point along the fiber was selected based on the detected signal quality and power. The selected location is at the 345-m point along the fiber, which corresponds...

... of the following search terms: (A) “acoustic camera”, “acoustic lens sonar”, “multibeam forward-looking sonar”, “forward-looking sonar”, or “imaging sonar”; (B) “abundance”, “behaviour”, “behaviour”, “biomass”, “fish”, or “target”; and (C) the specific sonar model names listed above. Full-text reviews were carried...

... influenced by DVM behaviours. active acoustics biological oceanography diel vertical migration euphausiids predator–prey interactions time series zooplankton Fisheries and Oceans Canada 10.13039/501100000041 Euphausiids are a major component of the zooplankton community along the coast of British...

... research on noise from wind turbines points to healthy sleep, when turbines are sited reasonably. This includes audible noise, low-frequency noise, and infrasound. Recent advances in acoustical standards provide practical methods to ensure adherence to these scientific findings. There now exist key data...

... as human activities, such as commercial and recreational fishing. The Block Island Wind Farm is a five‐turbine, 30‐MW wind array located about 6 km off the coast of Rhode Island and has been in operation since 2016. Methods We conducted a 4‐day acoustical and biological survey of the area during...