Correction: Using remote sensing to detect whale strandings in remote areas: The case of sei whales mass mortality in Chilean Patagonia

Fretwell, Peter T.; Jackson, Jennifer A.; Encina, Mauricio J. Ulloa; Häussermann, Vreni; Álvarez, María José Pérez; Olavarría, Carlos

doi:10.1371/journal.pone.0225209

Cited by 4 publications

(2 citation statements)

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“…For most cetacean species, single and mass stranding events are one of the few opportunities to examine and collect tissues and isolate disease agents. However, the extraction of relevant biological data from stranded cetaceans is complicated by the deterioration of carcasses with time and the prompt detection, and accessibility to cetaceans when the strandings occur in remote locations (Fretwell et al, 2019;Gómez-Hernández et al, 2020). Overcoming these limitations requires substantial material and human resources that are usually not available in most parts of the world (Alvarado-Rybak et al, 2019;Fretwell et al, 2019).…”

Section: Introductionmentioning

confidence: 99%

“…This means that most of its coastline is uninhabited and far from populated areas. Furthermore, in the Austral region, the rugged geography and harsh climate make most of the coastline inaccessible by land and difficult to monitor from sea and air (Häussermann et al, 2017;Fretwell et al, 2019). Through most of Chile's coastline, several cold-water currents and fresh water sources mix in fjords and bays creating some of the most productive marine ecosystems in the world (Buchan and Quiñones, 2016;Viddi et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

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Pathological Findings in Cetaceans Sporadically Stranded Along the Chilean Coast

et al. 2020

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Chile has one of the largest coastlines in the world with at least 50% of the world cetacean species occurring within its jurisdictional waters. However, little is known regarding the health status and main causes of death in cetaceans off continental Chile. In this report, we summarize the major pathological findings and most likely causes of death of 15 cetaceans stranded along the Chilean coast between 2010 and 2019. Drowning, due to fishing gear entanglement, was the most likely cause of death in 3 Burmeister's porpoises (Phocoena spinipinnis), a Risso's dolphin (Grampus griseus) and a short-beaked common dolphin (Delphinus delphis). Additionally, the 3 Burmeister's porpoises had mild to moderate eosinophilic and histiocytic pneumonia with pulmonary vasculitis associated with the nematode Pseudalius inflexus. A fourth Burmeister's porpoise died of drowning after stranding alive at a sandy beach. Two fin whales (Balaenoptera physalus) died most likely of trauma associated with large vessel collision. A long-finned pilot whale (Globicephala melas) and an Orca (Orcinus orca) stranded most likely due to traumatic intra/interspecific interaction with other odontocete although for the pilot whale, osteoporosis with loss of alveolar bone and all teeth could have played a role. For a Strap-toothed beaked whale (Mesoplodon layardi), Dwarf sperm whale (Kogia sima), Southern right-whale dolphin (Lissodelphis peronii), Peale's dolphin (Lagenorhynchus australis) and a dusky dolphin (Lagenorhynchus obscurus), the cause of stranding could not be determined. This study shows, despite the small number of examined carcasses that in Chile, human related trauma is an important cause of single cetacean stranding events.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Pathological Findings in Cetaceans Sporadically Stranded Along the Chilean Coast

et al. 2020

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Using satellite imagery to estimate abundance of Cumberland Sound beluga whales (Delphinapterus leucas) in 2021

Sherbo,

Belanger,

Charry

et al. 2024

Front. Mar. Sci.

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The Cumberland Sound beluga whale (Delphinapterus leucas) population inhabits Cumberland Sound on the southeast side of Baffin Island, Nunavut. The population is listed as threatened under the Species at Risk Act. The last abundance estimate from an aerial survey was estimated at 1,381 (95% CI: 1,270-1,502) beluga whales in 2017 for an area covering 12,485 km2. Since then, satellite imagery has been used as a remotely based non-invasive method to monitor these whales. Very High Resolution (VHR) satellite imagery covering 9,690 km² of water was collected from Cumberland Sound from August 30 to September 7, 2021, during the ice free season. Readers with previous imagery analysis experience analyzed the images and identified 704 certain detections. Abundance estimates were corrected for availability bias for whales that were too deep to be detected in the imagery (>2m). We present a total estimate of 1,690 (CV = 0.16; 95% CI: 1,241-2,301) beluga whales in Cumberland Sound (22,663 km2). This estimate covers a larger area and estimates a higher abundance than the 2017 aerial survey. Regular population abundance assessments are essential for understanding population dynamics and trends and we have shown here that satellite imagery is a comparable method to aerial surveys for estimating abundance.

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A Biologist’s Guide to the Galaxy: Leveraging Artificial Intelligence and Very High-Resolution Satellite Imagery to Monitor Marine Mammals from Space

Khan

Goetz

Cubaynes

et al. 2023

JMSE

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Monitoring marine mammals is of broad interest to governments and individuals around the globe. Very high-resolution (VHR) satellites hold the promise of reaching remote and challenging locations to fill gaps in our knowledge of marine mammal distribution. The time has come to create an operational platform that leverages the increased resolution of satellite imagery, proof-of-concept research, advances in cloud computing, and machine learning to monitor the world’s oceans. The Geospatial Artificial Intelligence for Animals (GAIA) initiative was formed to address this challenge with collaborative innovation from government agencies, academia, and the private sector. In this paper, we share lessons learned, challenges faced, and our vision for how VHR satellite imagery can enhance our understanding of cetacean distribution in the future.

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Correction: Using remote sensing to detect whale strandings in remote areas: The case of sei whales mass mortality in Chilean Patagonia

Cited by 4 publications

References 1 publication

Pathological Findings in Cetaceans Sporadically Stranded Along the Chilean Coast

Pathological Findings in Cetaceans Sporadically Stranded Along the Chilean Coast

Using satellite imagery to estimate abundance of Cumberland Sound beluga whales (Delphinapterus leucas) in 2021

A Biologist’s Guide to the Galaxy: Leveraging Artificial Intelligence and Very High-Resolution Satellite Imagery to Monitor Marine Mammals from Space

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