The 2014-2016 Northeast Pacific marine heatwave (MHW) induced the warmest 3-year period on record in the California Current Ecosystem. We tested whether larval fish assemblage structure, phenology, and diversity dynamics were comparable to past warming events from 1951 to 2013. First, we hypothesized, based on past observations of biological effect of warming, that mesopelagic species with southern distributions relative to southern California and Pacific sardine Sardinops sagax (a coastal pelagic species) would increase during the MHW while northern mesopelagics and northern anchovy Engraulis mordax (coastal pelagic) abundances would decline. Similar to past warming, southern mesopelagics increased and northern mesopelagics decreased. Unexpectedly, however, a common southern mesopelagic, Mexican lampfish Triphoturus mexicanus, was approximately three times more abundant than the previous annual high. Furthermore, whereas sardine abundance did not increase, larval anchovy abundance rose to near-record highs in summer 2016. Second, we hypothesized that fishes would spawn earlier during the MHW. Fishes did not spawn in an earlier season within a year, but five of six southern mesopelagic taxa spawned earlier than typical within winter and spring. Third, we predicted that species richness would increase moderately due to an influx of southern and exodus of northern species. Richness, however, was very high in all seasons and the highest ever during the summer as multiple species with primarily southern distributions were recorded spawning for the first time in southern California. The richness of northern species was also unexpectedly high during the MHW. Northern species likely persisted in the study area because in addition to the warm water, pockets of cold water were consistently present. If, as predicted, conditions similar to the MHW become more common as oceans warm, this unique and largely unexpected combination of fishes may reflect future biological conditions.
Download full-text PDF |
Source |
---|---|
http://dx.doi.org/10.1111/gcb.16010 | DOI Listing |
J Marriage Fam
February 2025
Department of Population and Public Health Sciences, University of Southern California, Los Angeles, California, USA.
Objective: This study examines perceptions of changes in intimate relationships among partnered, immigrant women in New York City during the first year of the COVID-19 pandemic. We pay close attention to how structural oppression, particularly related to undocumented immigration status, shaped women's experiences with their intimate partners during a period of social upheaval.
Background: COVID-19 has exacerbated many existing structural inequities and subsequent stressors that have been shown to have an adverse effect on intimate relationships, including increased economic instability and mental health distress.
Open Res Eur
January 2025
Division of Geological and Planetary Sciences, California Institute of Technology, Pasadena, California, 91125, USA.
The study of transient and variable events, including novae, active galactic nuclei, and black hole binaries, has historically been a fruitful path for elucidating the evolutionary mechanisms of our universe. The study of such events in the millimeter and submillimeter is, however, still in its infancy. Submillimeter observations probe a variety of materials, such as optically thick dust, which are hard to study in other wavelengths.
View Article and Find Full Text PDFPNAS Nexus
January 2025
Department of Pharmacology and Pharmaceutical Sciences, University of Southern California Mann School of Pharmacy and Pharmaceutical Sciences, 1985 Zonal Ave, Los Angeles, CA 90089-9121, USA.
Natural products are ligands and in vitro inhibitors of Alzheimer's disease (AD) tau. Dihydromyricetin (DHM) bears chemical similarity to known natural product tau inhibitors. Despite having signature polyphenolic character, DHM is ostensibly hydrophobic owing to intermolecular hydrogen bonds that shield hydrophilic phenols.
View Article and Find Full Text PDFJ Hunger Environ Nutr
April 2023
Department of Environmental, Occupational and Geospatial Sciences, City University of New York School of Public Health and Health Policy.
The goal of this study is to describe the social networks of Latino immigrants (n=80) in New York City, and how various network features are linked with dietary quality and food insecurity. Participants had higher Healthy Eating Index (HEI) scores if their social networks were more transitive (β = 6.11, <0.
View Article and Find Full Text PDFEClinicalMedicine
February 2025
Division of Respiratory Medicine, Department of Pediatrics, University of California San Diego, Rady Children's Hospital of San Diego, San Diego, CA, USA.
Background: Children from racial and ethnic minority groups are at greater risk for severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection, but it is unclear whether they have increased risk for post-acute sequelae of SARS-CoV-2 (PASC). Our objectives were to assess whether the risk of respiratory and neurologic PASC differs by race/ethnicity and social drivers of health.
Methods: We conducted a retrospective cohort study of individuals <21 years seeking care at 24 health systems across the U.
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!