AI Article Synopsis
- The study explored the use of electromagnetic induction (EMI) to quickly measure soil salinity in salt marshes, providing an alternative to traditional methods.
- Monthly salinity data from two marshes in Narragansett Bay revealed significant variations, with seasonal trends showing the lowest salinities in April and the highest in August.
- The research highlighted that while salinity patterns at Narrow River marsh remained consistent over time, patterns at Passeonkquis marsh changed; additionally, rainfall and tide state were significant factors influencing salinity fluctuations.
Article Abstract
Measurement of the apparent conductivity of salt marsh sediments using electromagnetic induction (EMI) is a rapid alternative to traditional methods of salinity determination that can be used to map soil salinity across a marsh surface. Soil salinity measures can provide information about marsh processes, since salinity is important in determining the structure and function of tidally influenced marsh communities. While EMI has been shown to accurately reflect salinity to a specified depth, more information is needed on the potential for spatial and temporal variability in apparent conductivity measures that may impact the interpretation of salinity data. In this study we mapped soil salinity at two salt marshes in the Narragansett Bay, RI estuary monthly over the course of several years to examine spatial and temporal trends in marsh salinity. Mean monthly calculated salinity was 25.8 ± 5.5 ppt at Narrow River marsh (NAR), located near the mouth of the Bay, and 17.7 ± 5.3 ppt at Passeonkquis marsh (PAS) located in the upper Bay. Salinity varied seasonally with both marshes, showing the lowest values (16.3 and 8.3 ppt, respectively) in April and highest values (35.4 and 26.2 ppt, respectively) in August. Contour plots of calculated salinities showed that while the mean whole-marsh calculated salinity at both sites changed over time, within-marsh patterns of higher versus lower salinity were maintained at NAR but changed over time at PAS. Calculated salinity was significantly negatively correlated with elevation at NAR during a sub-set of 12 sample events, but not at PAS. Best-supported linear regression models for both sites included one-month and 6-month cumulative rainfall, and tide state as potential factors driving observed changes in calculated salinity. Mapping apparent conductivity of salt marsh sediments may be useful both identifying within-marsh micro-habitats, and documenting marsh-wide changes in salinity over time.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6884989 | PMC |
| http://dx.doi.org/10.7717/peerj.8074 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Effect of magnetized water on the fundamental grouting properties of cement grout under varying magnetization conditions.
Sci Rep
January 2025
College of Electrical and Information Engineering, Hunan University of Science and Technology, Xiangtan, 411201, Hunan, People's Republic of China.
The development and modification of grouting materials constitute crucial factors influencing the effectiveness of grouting. Given the pivotal role of water in the hydration of cement-based composite materials and construction processes, this study proposes an exploratory approach using green, economical magnetized water technology to enhance the performance of cement grouts. The research systematically investigates the effects of magnetized water on the fundamental grouting properties (stability, rheological behavior, and stone body strength) of cement grouts, prepared under varying magnetization conditions (including magnetic intensity, water flow speed, and cycle times).
View Article and Find Full Text PDFGastrointestinal absorption and its regulation of hawthorn leaves flavonoids.
Sci Rep
January 2025
School of Pharmacy, Fudan University, 826 Zhangheng Road, Shanghai, 201203, P.R. China.
Hawthorn leave flavonoids (HLF) are widely used as an herb or dietary supplements for cardio-cerebrovascular diseases. However, its gastrointestinal absorption behavior and mechanism have not been disclosed. In this study, gastrointestinal absorption and its regulation of 4''-O-glucosylvitexin (GLV), 2''-O-rhamnosylvitexin (RHV), vitexin (VIT), rutin (RUT) and hyperoside (HP) in HLF were investigated using in vitro, in situ and in vivo models.
View Article and Find Full Text PDFComplex genetic interactions affect susceptibility to Alzheimer's disease risk in the BIN1 and MS4A6A loci.
Geroscience
January 2025
Biodemography of Aging Research Unit, Social Science Research Institute, Duke University, Erwin Mill Building, 2024 W. Main St, Durham, NC, 27705, USA.
Genetics is the second strongest risk factor for Alzheimer's disease (AD) after age. More than 70 loci have been implicated in AD susceptibility so far, and the genetic architecture of AD entails both additive and nonadditive contributions from these loci. To better understand nonadditive impact of single-nucleotide polymorphisms (SNPs) on AD risk, we examined individual, joint, and interacting (SNPxSNP) effects of 139 and 66 SNPs mapped to the BIN1 and MS4A6A AD-associated loci, respectively.
View Article and Find Full Text PDFClinical Manifestations.
Alzheimers Dement
December 2024
Columbia University Irving Medical Center, New York, NY, USA.
Background: Some research suggests that multilingualism confers a cognitive advantage, but this association may be confounded by linguistic and socioeconomic factors. Multilinguals can differ on their first language such that it could be a societal majority- or minority-language, resulting in distinct reasons for- and experiences with- becoming/being multilingual, along with different socioeconomic opportunities. We evaluated the association of multilingualism (Monolingual, Multilingual-Majority, Multilingual-Minority) and socioeconomic status (SES) on cognition among older adults.
View Article and Find Full Text PDFClinical Manifestations.
Alzheimers Dement
December 2024
Washington University School of Medicine, St. Louis, MO, USA.
Background: Trip chaining occurs when a driver departs from an origin and travels to multiple locations before returning. Increased trip complexity may require higher levels of executive function, memory, and navigational abilities. Subtle behavioral changes are apparent before a clinical diagnosis of Alzheimer Disease (AD); however, the correspondence between preclinical AD pathology (amyloid deposition, tauopathy, neurodegeneration), cognition, and changes in trip chaining behavior is unknown.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!