The Reflections series takes a look back on historical articles from The Journal of the Acoustical Society of America that have had a significant impact on the science and practice of acoustics.
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Global mean sea level likely higher than present during the holocene.
Nat Commun
December 2024
Lamont-Doherty Earth Observatory, Columbia University, New York, NY, USA.
Global mean sea-level (GMSL) change can shed light on how the Earth system responds to warming. Glaciological evidence indicates that Earth's ice sheets retreated inland of early industrial (1850 CE) extents during the Holocene (11.7-0 ka), yet previous work suggests that Holocene GMSL never surpassed early industrial levels.
View Article and Find Full Text PDFLong- and short-term coupling of sea surface temperature and atmospheric CO during the late Paleocene and early Eocene.
Proc Natl Acad Sci U S A
September 2024
Department of Earth and Planetary Sciences, University of California, Santa Cruz, CA 95064.
Article Synopsis
- The late Paleocene and early Eocene periods were marked by long-term global warming and short, abrupt warming events called hyperthermals, largely influenced by greenhouse gases but possibly affected by other factors like tectonics.
- Researchers analyzed data from planktic foraminifera to reconstruct sea surface temperatures and CO levels, focusing on key events such as the Paleocene-Eocene Thermal Maximum (PETM) and Eocene Thermal Maximum 2 (ETM-2).
- Findings indicate a strong connection between CO and temperature, with different carbon sources contributing to the CO increases during these periods, and the emissions from these events are comparable to future projections, highlighting their relevance to current climate change discussions.
Mapping the main harmful algal species in the East China Sea (Yangtze River estuary) and their possible response to the main ecological status and global climate change via a global vision.
Sci Total Environ
November 2024
Key Laboratory of Marine Ecosystem Dynamics, Second Institute of Oceanography, Ministry of Natural Resources, Hangzhou 310012, China; Key Laboratory of Tropical Marine Ecosystem and Bioresource, Fourth Institute of Oceanography, Ministry of Natural Resources, Beihai 536000, China; Guangxi Key Laboratory of Beibu Gulf Marine Resources, Environment and Sustainable Development, Fourth Institute of Oceanography, Ministry of Natural Resources, Beihai 536000, China. Electronic address:
The Yangtze River Estuary (YRE) is one of the areas in China most severely affected by harmful algal blooms (HABs). This study explored the distributive patterns of HABs in the YRE and how they are influenced by the El Niño-Southern Oscillation (ENSO) and other environmental factors. Quantitative real-time PCR (qPCR) was employed to detect and quantify the four predominant HAB species in the YRE, Karenia mikimotoi, Margalefidinium polykrikoides, Prorocentrum donghaiense, and Heterosigma akashiwo.
View Article and Find Full Text PDFGenomic regions, candidate genes, and pleiotropic variants associated with physiological and anatomical indicators of heat stress response in lactating sows.
BMC Genomics
May 2024
Department of Animal Sciences, Purdue University, West Lafayette, IN, USA.
Background: Heat stress (HS) poses significant threats to the sustainability of livestock production. Genetically improving heat tolerance could enhance animal welfare and minimize production losses during HS events. Measuring phenotypic indicators of HS response and understanding their genetic background are crucial steps to optimize breeding schemes for improved climatic resilience.
View Article and Find Full Text PDFAn 800-year record of benthic foraminifer images and 2D morphometrics from the Santa Barbara Basin.
Sci Data
January 2024
Department of Integrative Biology and Museum of Paleontology, University of California at Berkeley, Berkeley, CA, 94720, USA.
The Santa Barbara Basin is an extraordinary archive of environmental and ecological change, where varved sediments preserve microfossils that provide an annual to decadal record of the dynamics of surrounding ecosystems. Of the microfossils preserved in these sediments, benthic foraminifera are the most abundant seafloor-dwelling organisms. While they have been extensively utilized for geochemical and paleoceanographic work, studies of their morphology are lacking.
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