Tracking whales on the Scotian Shelf using passive acoustic monitoring on ocean gliders

Davis, Richard F.; Baumgartner, Mark F.; Comeau, Adam; Cunningham, Dan; Davies, K.; Furlong, Arnold; Johnson, Hansen D.; L'Orsa, Sue; Ross, Tetjana; Taggart, Christopher T.; Whoriskey, Fred

doi:10.1109/oceans.2016.7761461

Cited by 14 publications

(10 citation statements)

References 2 publications

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“…Standard density-dependent population theory, exemplified by logistic growth models (Tsoularis and Wallace, 2002), holds that populations reduced to low densities should in the absence of migration increase at close to the maximum biological rate. Mate et al, 1997;Baumgartner andMate, 2003, 2005;Schick et al, 2009Childerhouse et al, 2010Mate et al, 2011;Zerbini et al, 2016Zerbini et al, 2015 Passive acoustic monitoring 10s-1000s km Davis et al, 2017 and studies cited therein Webster et al, 2016;Jacobs et al, 2018;Rayment et al, 2018Waite et al, 2003Mellinger et al, 2004;Rone et al, 2012;Širović et al, 2015;Wright et al, 2018 Autonomous vehicles with on-board acoustics 10s-100s km Baumgartner, 2014;Davis et al, 2016 Stable isotopes 100s-1000s km Lysiak, 2009;Lysiak et al, 2018 Best andSchell, 1996;Rowntree et al, 2001Rowntree et al, , 2008Valenzuela et al, 2009Valenzuela et al, , 2010Valenzuela et al, , 2018Carroll et al, 2015 Genetics 100s-1000s km Schaeff et al, 1993;Malik et al, 1999;Frasier et al, 2007Baker et al, 1999Patenaude et al, 2007;Valenzuela et al, 2009;Carroll et al, 2011, 2014, 2018…”

Section: Inverse Density Dependence: Genetic Diversity and Stochasticmentioning

confidence: 99%

“…Incorporation of these types of acoustic monitoring devices and detection and classification algorithms into autonomous ocean platforms (i.e., gliders Figure 3) has extended the duration, season, and track-line distance of sampling and surveying ability through poor weather (vs. shipboard surveys), while sampling simultaneous relevant in situ oceanographic information. Gliders have successfully detected fin, sei, humpback, and NARW in habitats ranging from the Gulf of Maine to the Gulf of St. Lawrence 1 (Baumgartner et al, 2013a;Davis et al, 2016). Gliders have also been deployed in the Chukchi sea area, primarily to detect bowhead, beluga, and fin whales (Baumgartner et al, 2014b); however, this region is further north than the most frequented eastern NPRW habitats.…”

Section: Autonomous Platformsmentioning

confidence: 99%

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Future Directions in Eubalaena spp.: Comparative Research to Inform Conservation

et al. 2019

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All three extant right whales [Eubalaena australis (Southern; SRW), glacialis (North Atlantic; NARW), and japonica (North Pacific; NPRW)] were heavily exploited, and the status of the two northern hemisphere species remains precarious. Recently, limited gains made by the NARW have been reversed and urgent changes to management approaches are needed if extinction is to be averted. By contrast, some SRW populations are recovering. Given their close phylogenetic relationship, morphological, demographic, and ecological similarities, the contrasting recovery rates between populations and species provide an opportunity to apply a comparative approach to inform the differences in recovery as follows. (1) Recovery: All right whale species were internationally protected in 1931, but NARW, eastern NPRW and some SRW populations have barely recovered from whaling, while others are doing so at maximal rates. Are these differences a legacy of extreme depletion (e.g., loss of genetic diversity and cultural knowledge) or primarily due to anthropogenic factors (e.g., high mortality from ship strike and fisheries entanglement)? If modern anthropogenic threats are not affecting remote SRW populations, can these serve as baseline populations for comparison with NARW and NPRW? (2) Linking individuals to population-level responses: In wild mammals, strong links exist between reproductive indices and environmental conditions within the context of life-history strategies. Individual identification of whales provides the ability to track survival, reproduction and other demographic parameters, and their population-level consequences, providing the tools with which to uncover these links. Robust life-history analyses are now available for NARW and several SRW populations, linking demography with environmental conditions, providing the potential for teasing out important influencing factors. (3) Adapting to shifting resources: Recent reproductive declines in NARW appear linked to changing food resources. While we know some large-scale movement patterns for NARW and a few SRW populations, we know little of mesoscale movements. For NPRW and some SRW populations, even broad-scale movements are poorly understood. In the face of climate change, can methodological advances help identify Eubalaena distributional and migratory responses? (4) Emergent diseases and the vulnerability of populations under stress: Marine mammals are vulnerable to infectious diseases,

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Section: Inverse Density Dependence: Genetic Diversity and Stochasticmentioning

confidence: 99%

Section: Autonomous Platformsmentioning

confidence: 99%

Future Directions in Eubalaena spp.: Comparative Research to Inform Conservation

et al. 2019

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“…Furthermore, integration of standardised data repositories along with a comprehensive set of analytical tools to ensure rapid and sophisticated analysis of acoustic array data (Lea et al, ) would lead to new insights into the spatial ecology of fish. Further technological developments such as the use of autonomous underwater vehicles (AUV) to perform routine data download operations, or even complement fixed acoustic receivers (Davis et al, ), will make acoustic telemetry increasingly affordable and accessible to more researchers. Continued collaborations with established regional and international tracking networks, together with the ever‐increasing sophistication, miniaturisation, durability and cost reduction of tags promises an increasingly important role for acoustic telemetry in our understanding of fish ecology.…”

Section: Tagging and Telemetrymentioning

confidence: 99%

Understanding and managing fish populations: keeping the toolbox fit for purpose

Paris

Sherman

Bell

et al. 2018

Journal of Fish Biology

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Wild fish populations are currently experiencing unprecedented pressures, which are projected to intensify in the coming decades. Developing a thorough understanding of the influences of both biotic and abiotic factors on fish populations is a salient issue in contemporary fish conservation and management. During the 50th Anniversary Symposium of The Fisheries Society of the British Isles at the University of Exeter, UK, in July 2017, scientists from diverse research backgrounds gathered to discuss key topics under the broad umbrella of 'Understanding Fish Populations'. Below, the output of one such discussion group is detailed, focusing on tools used to investigate natural fish populations. Five main groups of approaches were identified: tagging and telemetry; molecular tools; survey tools; statistical and modelling tools; tissue analyses. The appraisal covered current challenges and potential solutions for each of these topics. In addition, three key themes were identified as applicable across all tool-based applications. These included data management, public engagement, and fisheries policy and governance. The continued innovation of tools and capacity to integrate interdisciplinary approaches into the future assessment and management of fish populations is highlighted as an important focus for the next 50 years of fisheries research.

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“…Some acoustic recording systems contain sufficient on-board processing power to support real-time data reduction in the form of spectrogram generation, detection and classification of specific sounds, and localization of sounds from hydrophone arrays. For example, for ocean gliders equipped with acoustic receivers with on-board whale call classification software, only short data packets need be transmitted via Iridium satellite data connections to then allow real-time whale positions to be added to the automated identification system (AIS) used on ships and by vessel traffic services (Davis et al, 2016) to track vessel locations.…”

Section: Passive Acoustic Monitoringmentioning

confidence: 99%

Observing the Oceans Acoustically

et al. 2019

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Tracking whales on the Scotian Shelf using passive acoustic monitoring on ocean gliders

Cited by 14 publications

References 2 publications

Future Directions in Eubalaena spp.: Comparative Research to Inform Conservation

Future Directions in Eubalaena spp.: Comparative Research to Inform Conservation

Understanding and managing fish populations: keeping the toolbox fit for purpose

Observing the Oceans Acoustically

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