Article
Environmental Sciences
Amelia Brower, Megan Ferguson, Janet Clarke, Ei Fujioka, Sarah DeLand
Summary: We identified and evaluated Biologically Important Areas (BIAs) for cetaceans in the Aleutian Islands and Bering Sea region. These areas represent crucial habitats for cetacean activities such as reproduction, feeding, migration, and known ranges of small and resident populations. Our study utilized various sources of evidence, including surveys, satellite-tagging data, acoustic monitoring, Indigenous knowledge, photo-identification data, whaling data, prey studies, and genetics. The BIAs provide valuable information for planning, impact assessments, and conservation measures for cetaceans.
FRONTIERS IN MARINE SCIENCE
(2022)
Article
Fisheries
Mark Zimmermann, Megan M. Prescott
Summary: This study provided the first detailed and accurate estimates of the Aleutian Island passes, revealing that the westernmost passes are larger than previously reported. It also highlighted the important oceanographic and ecological boundary of Samalga Pass.
FISHERIES OCEANOGRAPHY
(2021)
Article
Marine & Freshwater Biology
Albert L. Harting, Michelle M. Barbieri, Jason D. Baker, Tracy A. Mercer, Thea C. Johanos, Stacie J. Robinson, Charles L. Littnan, Katie M. Colegrove, Dave S. Rotstein
Summary: Identifying, assessing, and ranking the impact of individual threats is crucial for the conservation and recovery of rare and endangered species. The study analyzed the frequency and impact of causes of death among Main Hawaiian Island monk seals, with anthropogenic causes having the largest influence on the population growth rate.
MARINE MAMMAL SCIENCE
(2021)
Article
Meteorology & Atmospheric Sciences
Yaprak Onat, Oceana P. Francis
Summary: Research has found that there has been an increase in the number and intensity of strong extratropical cyclones in the North Pacific Ocean from 1979 to 2017, with a particularly significant rise during 2007-2017. These cyclones have led to a higher frequency of swell generation towards the poleward and westward directions. Approximately one-third of the waves generated by these cyclones reached the Hawaiian Islands from 1979 to 2017, with around one-quarter reaching during 2007-2017.
Article
Multidisciplinary Sciences
Rainer M. W. Amon, Jose Ochoa, Julio Candela, Sharon Z. Herzka, Paula Perez-Brunius, Julio Sheinbaum, Victor F. Camacho Ibar, Juan Carlos Herguera, Martin Hernandez Ayon, Robert M. Key, Sergey Molodtsov
Summary: This study investigates the ventilation in the deep Gulf of Mexico, its connection to the North Atlantic, and its sensitivity to changes in Atlantic Meridional Overturning Circulation (AMOC). Using radiocarbon data and transport measurements, it is found that the residence time of deep water in the Gulf of Mexico is approximately 100 years. Comparisons with previous radiocarbon observations suggest that the deep Gulf of Mexico has aged in recent years, which is consistent with temperature increases and CMIP6 global circulation model simulations. The distribution of radiocarbon indicates that there is a time lag of around 160 years between North Atlantic convection and complete ventilation of the deep Gulf of Mexico, suggesting that the aging and warming of deep waters in the Gulf of Mexico were initiated in the North Atlantic before approximately 1890, which aligns with the reported rapid and persistent weakening of AMOC since the Little Ice Age.
Article
Biodiversity Conservation
Timothy Loher
Summary: This study investigates the migratory dynamics and habitat use of Pacific halibut in the Bering Sea and Aleutian Islands region. Through tagging and data collection, the study reveals distinct movement patterns in different geographical areas and seasonal and interannual variations in migration. The findings provide insights into the connectivity of the species and contribute to numerical modeling analysis.
ANIMAL BIOTELEMETRY
(2022)
Review
Environmental Sciences
Juan Jose Alava, Karly McMullen, Jen Jones, Maria Jose Barragan-Paladines, Catherine Hobbs, Ana Tirape, Paola Calle, Daniela Alarcon, Juan Pablo Munoz-Perez, Laia Munoz-Abril, Kathy Ann Townsend, Judith Denkinger, Miguel Uyaguari, Gustavo A. Dominguez, Eduardo Espinoza, Harry Reyes, Paolo Piedrahita, Patricia Fair, Tamara Galloway, Jack Stein Grove, Ceri Lewis, John Schofield
Summary: For decades, the Galapagos Islands have been facing multiple anthropogenic stressors, including marine pollution and illegal fishing. These stressors have caused significant ecological and health issues for the species on the islands, which are further exacerbated by climate change. In addition to climate change, marine plastics are also emerging as a widespread threat to endemic species.
INTEGRATED ENVIRONMENTAL ASSESSMENT AND MANAGEMENT
(2023)
Article
Geochemistry & Geophysics
J. Godfrey Fitton, Rebecca Williams, Tiffany L. Barry, Andrew D. Saunders
Summary: The Hawaii-Emperor and Louisville seamounts show differences in magma productivity, composition, and how they were formed, with the former being larger and more active, while the latter is smaller and seems to be decreasing in activity. The composition of basalt from these seamounts is influenced by factors such as lithosphere thickness and mantle source temperatures.
JOURNAL OF PETROLOGY
(2020)