2019
DOI: 10.3354/esr01005
|View full text |Cite
|
Sign up to set email alerts
|

North Atlantic right whale shift to the Gulf of St. Lawrence in 2015, revealed by long-term passive acoustics

Abstract: This paper contributes to documenting a change in the distribution of North Atlantic right whales Eubalaena glacialis (NARWs) that occurred in the 2010s, when the whales largely abandoned their traditional summering grounds in the Gulf of Maine/Bay of Fundy/Scotian shelf. Data from a year-round passive acoustic monitoring (PAM) network in the Gulf of St. Lawrence were exploited to build the time series of NARW incursions into this inland sea of the Northwest Atlantic, from June 2010 to November 2018. NARWs vis… Show more

Help me understand this report

Search citation statements

Order By: Relevance

Paper Sections

Select...
4
1

Citation Types

0
51
0

Year Published

2020
2020
2024
2024

Publication Types

Select...
4
3

Relationship

0
7

Authors

Journals

citations
Cited by 54 publications
(51 citation statements)
references
References 41 publications
0
51
0
Order By: Relevance
“…However, by restricting our attention to upcalls with SNR 4.0, the recall of the average model was increased to 85% for the same level of precision while retaining over 95% of the upcalls. Existing algorithms are capable of achieving similar levels of recall, but at the cost of a significantly higher false-positive rate (DCLDE 2013;Simard et al, 2019). Finally, we note that a related work entitled "Deep neural networks for automated detection of marine mammal species" (Shiu et al, 2020) has been published during the review of our paper.…”
Section: Discussionmentioning
confidence: 94%
See 3 more Smart Citations
“…However, by restricting our attention to upcalls with SNR 4.0, the recall of the average model was increased to 85% for the same level of precision while retaining over 95% of the upcalls. Existing algorithms are capable of achieving similar levels of recall, but at the cost of a significantly higher false-positive rate (DCLDE 2013;Simard et al, 2019). Finally, we note that a related work entitled "Deep neural networks for automated detection of marine mammal species" (Shiu et al, 2020) has been published during the review of our paper.…”
Section: Discussionmentioning
confidence: 94%
“…The DC performance of these classical signal processing methods under actual in situ recording conditions tends to plateau around a detection probability of about 50% (i.e. recall index) when the false detection probability is kept below about 10% (DCLDE 2013;Simard et al, 2019). The objective of the present study is to test if modern machine-learning approaches can break this apparent DC performance ceiling.…”
Section: Introductionmentioning
confidence: 94%
See 2 more Smart Citations
“…These smaller vessels generally do not use automatic identification systems (AIS), thus producing less track‐data compared to larger vessels and they are not subject to the regulations to mitigate ship strike lethality (Transport Canada, 2018). This suggests it is a mistake to focus solely on large vessels, particularly given recent observations of right whales in coastal eastern Canadian waters, where smaller vessels are used in local fisheries that are active at times while the whales are present (Davies & Brillant, 2019; Simard, Roy, Giard, & Aulanier, 2019).…”
Section: Introductionmentioning
confidence: 99%