Article
Acoustics
William Vickers, Ben Milner, Denise Risch, Robert Lee
Summary: This study proposes a robust system for detecting North Atlantic right whales by using deep learning to denoise noisy recordings. Evaluations show that denoising substantially improves accuracy in detecting right whales.
JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA
(2021)
Article
Environmental Sciences
Delphine Durette-Morin, Clair Evers, Hansen D. Johnson, Katie Kowarski, Julien Delarue, Hilary Moors-Murphy, Emily Maxner, Jack W. Lawson, Kimberley T. A. Davies
Summary: This study used passive acoustic monitoring data to characterize the spatial and temporal variation in the distribution of North Atlantic right whales (NARW). The results show that the population mainly resides in temperate latitudinal ranges and the northward range shift is likely driven by energetic requirements to minimize the distance between foraging habitat and calving grounds.
FRONTIERS IN MARINE SCIENCE
(2022)
Article
Marine & Freshwater Biology
Sarah M. E. Fortune, Michael J. Moore, Wayne L. Perryman, Andrew W. Trites
Summary: Understanding size-at-age is crucial for determining food requirements and assessing nutritional status of individuals and populations. Accurate growth curves are essential for drug dosages in treating injured animals. Updating body growth models for North Atlantic right whales using new data revealed discrepancies in mass-at-age values, highlighting the need to include a broader range of healthy individuals in the dataset.
MARINE MAMMAL SCIENCE
(2021)
Article
Marine & Freshwater Biology
Matus Hodul, Anders Knudby, Brigid McKenna, Amy James, Charles Mayo, Moira Brown, Delphine Durette-Morin, Stephen Bird
Summary: This study demonstrates that satellite imagery can be used to detect and confirm the presence of the critically endangered North Atlantic right whale. It provides another tool for conservation efforts, especially in areas where visual and acoustic methods are not applicable.
MARINE MAMMAL SCIENCE
(2023)
Article
Fisheries
Nathaniel Willse, Erin Summers, Yong Chen
Summary: This study examines the spatial variation in vertical line strength requirements in the Maine American lobster trap fishery. The findings suggest that inshore areas can safely use vertical lines within the recommended breaking strength to avoid entanglement of North Atlantic right whales, while the offshore lobster fishery requires additional measures to reduce the risk of entanglement and mortality.
MARINE AND COASTAL FISHERIES
(2022)
Article
Acoustics
Svenja Woehle, Elke Burkhardt, Ilse van Opzeeland, Elena Schall
Summary: Passive acoustic monitoring (PAM) is an effective method to study the acoustic presence and behavior of cetaceans. In this study, upcalls of southern right whales were successfully distinguished from similar vocalizations of humpback whales based on call features. Measurements of slope and bandwidth were identified as the main differences between the two species. The findings provide valuable insights into the migratory behavior and temporal occurrence of southern right whales in Antarctic waters.
JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA
(2023)
Article
Multidisciplinary Sciences
O. O'Brien, D. E. Pendleton, L. C. Ganley, K. R. McKenna, R. D. Kenney, E. Quintana-Rizzo, C. A. Mayo, S. D. Kraus, J. Redfern
Summary: Climate change has caused prey-related changes in the distribution of the critically endangered North Atlantic right whale in the Gulf of Maine. Aerial survey data from two time periods were compared to assess trends in right whale abundance, showing an increasing number of individuals in the region. These findings highlight the importance of the habitat and the need for adaptive management options as right whales adapt to climate change.
SCIENTIFIC REPORTS
(2022)
Article
Multidisciplinary Sciences
M. A. Romero, M. A. Coscarella, G. D. Adams, J. C. Pedraza, R. A. Gonzalez, E. A. Crespo
Summary: Understanding the recovery of whale populations is crucial for conservation strategies. This study assessed the population dynamics of the southern right whale and found that its population has remained small relative to its pre-exploitation abundance. Approximately 36% of the population visits the main breeding ground each year.
SCIENTIFIC REPORTS
(2022)
Review
Fisheries
K. A. Sorochan, S. Plourde, M. F. Baumgartner, C. L. Johnson
Summary: The study reviews the factors that promote suitable foraging habitat for the North Atlantic right whale, emphasizing the importance of prey depth, supply, and aggregation for facilitating suitable foraging habitat. It also highlights information gaps that hinder rapid and dynamic prediction of suitable foraging habitat.
ICES JOURNAL OF MARINE SCIENCE
(2021)
Article
Ecology
Dana L. Wright, David G. Kimmel, Nancy Roberson, David Strausz
Summary: The eastern North Pacific right whale (NPRW), the most endangered population of whale, has been observed north of its core feeding ground with low sea ice extent. Sea ice and water temperature are important drivers for zooplankton dynamics. The study suggests that the whales and their prey C. glacialis may move northward due to the continued loss of sea ice and warming.
ECOLOGICAL APPLICATIONS
(2023)
Article
Marine & Freshwater Biology
Chen-Yi Wu, Douglas P. Nowacek, Anna E. Nousek-McGregor, Ross McGregor, Laurens E. Howle
Summary: This study conducted computational fluid dynamics analysis on right whales to measure drag and found several characteristics of their drag forces. At a swimming speed of 2 m/s, analyses were conducted on boundary layer thicknesses, flow regimes, and drag components at different areas of the whale's body. The study revealed specific findings on the drag coefficient of right whales at different swimming speeds.
MARINE MAMMAL SCIENCE
(2021)
Article
Biochemistry & Molecular Biology
Joshua D. Stewart, John W. Durban, Amy R. Knowlton, Morgan S. Lynn, Holly Fearnbach, Jacob Barbaro, Wayne L. Perryman, Carolyn A. Miller, Michael J. Moore
Summary: Whales are now largely protected from direct harvest, but still face threats from human activities such as vessel strikes and entanglement in fishing gear. Climate-driven changes are affecting their foraging grounds, leading to direct mortality. The study found that entanglements in fishing gear are associated with shorter whales and have negative impacts on their reproductive success, posing a threat to vulnerable populations in their recovery efforts.
Article
Oceanography
Erin L. Meyer-Gutbrod, Charles H. Greene, Kimberley T. A. Davies, David G. Johns
Summary: Ocean warming, attributed to anthropogenic climate change, is affecting the ecology of marine species worldwide. In the Northwest Atlantic, climate-driven changes in ocean circulation have altered the foraging environment and habitat use of North Atlantic right whales, resulting in decreased population calving rates and increased mortality risks.
Article
Biodiversity Conservation
Katherine Gavrilchuk, Veronigue Lesage, Sarah M. E. Fortune, Andrew W. Trites, Stephane Plourde
Summary: The study suggests that the North Atlantic right whales have been feeding in the Gulf of St. Lawrence in recent years possibly due to changes in the availability of calanoid copepods in traditional feeding areas. However, the distribution and abundance of copepods in the gulf remain poorly understood, and it is uncertain whether they can provide enough energy for the right whales. Prey densities in the southern gulf were found to be able to support resting, pregnant, and lactating females in most years, but suitable foraging habitat became sparse over time, especially after 2014. Variations in foraging habitat availability in the gulf were observed, with better availability for resting females compared to pregnant and lactating females.
ENDANGERED SPECIES RESEARCH
(2021)
Article
Fisheries
K. A. Sorochan, S. Plourde, C. L. Johnson
Summary: In August 2019, variations in depth-integrated abundance and vertical distribution of Calanus spp. were quantified in the southern Gulf of St. Lawrence. While C. finmarchicus was the most abundant, the larger C. hyperboreus was prominent in the Shediac Valley, contributing a median of 55% estimated depth-integrated biomass of Calanus spp. Near-bottom aggregations of Calanus spp. occurred primarily at depths ranging from 70 to 90 m, likely due to ontogenetic and diel vertical migrations.
ICES JOURNAL OF MARINE SCIENCE
(2023)
Article
Environmental Sciences
Cornelia S. Oedekoven, Jeffrey L. Laake, Hans J. Skaug
ENVIRONMENTAL AND ECOLOGICAL STATISTICS
(2015)
Article
Biology
S. T. Buckland, C. S. Oedekoven, D. L. Borchers
JOURNAL OF AGRICULTURAL BIOLOGICAL AND ENVIRONMENTAL STATISTICS
(2016)
Article
Biodiversity Conservation
Philip J. Harrison, Yuan Yuan, Stephen T. Buckland, Cornelia S. Oedekoven, David A. Elston, Mark J. Brewer, Alison Johnston, James W. Pearce-Higgins
JOURNAL OF APPLIED ECOLOGY
(2016)
Article
Computer Science, Interdisciplinary Applications
C. S. Oedekoven, R. King, S. T. Buckland, M. L. Mackenzie, K. O. Evans, L. W. Burger
COMPUTATIONAL STATISTICS & DATA ANALYSIS
(2016)
Article
Multidisciplinary Sciences
Roberto C. Rodriguez-Caro, Cornelia S. Oedekoven, Eva Gracia, Jose D. Anadon, Stephen T. Buckland, Miguel A. Esteve-Selma, Julia Martinez, Andres Gimenez
Article
Marine & Freshwater Biology
Gregory L. Fulling, Thomas A. Jefferson, Dagmar Fertl, Juan Carlos Salinas Vega, Cornelia S. Oedekoven, Stan A. Kuczaj
Article
Marine & Freshwater Biology
Tim Gerrodette, Wayne L. Perryman, Cornelia S. Oedekoven
MARINE MAMMAL SCIENCE
(2019)
Article
Biology
C. S. Oedekoven, S. T. Buckland, M. L. Mackenzie, R. King, K. O. Evans, L. W. Burger
JOURNAL OF AGRICULTURAL BIOLOGICAL AND ENVIRONMENTAL STATISTICS
(2014)
Article
Biodiversity Conservation
Cornelia S. Oedekoven, Stephen T. Buckland, Monique L. Mackenzie, Kristine O. Evans, Loren W. Burger
JOURNAL OF APPLIED ECOLOGY
(2013)
Article
Environmental Sciences
Shannon Rankin, Cornelia Oedekoven, Frederick Archer
ENVIRONMENTAL AND ECOLOGICAL STATISTICS
(2020)
Article
Environmental Sciences
Cornelia S. Oedekoven, Tiago A. Marques, Danielle Harris, Len Thomas, Aaron M. Thode, Susanna B. Blackwell, Alexander S. Conrad, Katherine H. Kim
Summary: This study summarizes three methods for passive acoustic density estimation: plot sampling, DS, and SECR. Through simulation and a case study, it was found that discrepancies between estimates derived using SECR and other methods were primarily caused by manual detection procedures and errors in estimated distances between detected calls and sensors.
ENVIRONMENTAL AND ECOLOGICAL STATISTICS
(2022)
Article
Marine & Freshwater Biology
Eiren K. Jacobson, E. Elizabeth Henderson, David L. Miller, Cornelia S. Oedekoven, David J. Moretti, Len Thomas
Summary: This article investigates the behavioral responses of Blainville's beaked whales to naval use of mid-frequency active sonar in Hawaii and the Bahamas. The results indicate a stronger reaction to naval training and sonar than previously reported.
MARINE MAMMAL SCIENCE
(2022)
Article
Environmental Sciences
Brooke L. Bessesen, Cornelia S. Oedekoven, Gary J. Galbreath, Manuela Gonzalez-Suarez
Summary: Population abundance and density estimates are crucial for conservation assessment and management. We present the first quantitative abundance and density estimates for the geographically isolated sea snake Hydrophis platurus xanthos in Golfo Dulce, Costa Rica. The estimated population abundance is 29781 individuals with a density of 76 snakes/km(2). However, the long-term persistence of this population may be threatened by anthropogenic impacts and climate change.
FRONTIERS IN MARINE SCIENCE
(2022)
Article
Ecology
Cornelia S. Oedekoven, David A. Elston, Philip J. Harrison, Mark J. Brewer, Stephen T. Buckland, Alison Johnston, Simon Foster, James W. Pearce-Higgins
METHODS IN ECOLOGY AND EVOLUTION
(2017)