Preprints
There are 6197 Preprints listed.
Can land-use and land-cover change explain reduced resilience in forests?
Published: 2023-10-24
Subjects: Forest Sciences
Generating signals of reduced resilience in ecosystems is crucial for conservation and management endeavors. However, the practical implications of such systems are still limited due to the lack of high-frequency data and uncertainties associated with predicting complex systems such as ecosystems. This study aims to investigate the potential of time series analysis of remote sensing data in [...]
Hydrological model skills change with drought severity; insights from multi-variable evaluation
Published: 2023-10-23
Subjects: Earth Sciences, Hydrology, Physical Sciences and Mathematics
Hydrological models often do not properly simulate streamflow (Q) during extreme events, including droughts. Limited abilities in simulating Q during droughts may arise from a misrepresentation of Q generating processes during these periods, but little research has focused on distributed, process-based models over human-affected areas and extreme events. To shed more light into model consistency [...]
Harnessing the Power of Rhizosphere Bacteria for Pollution Remediation: Strategies, Mechanisms, and Environmental Impact: A Minireview
Published: 2023-10-23
Subjects: Life Sciences
This present review provides an in-depth exploration of the burgeoning potential of rhizosphere bacteria as a formidable tool for pollution remediation within the context of contemporary scientific understanding. The rhizosphere, a soil region intimately associated with plant roots, encompasses a dynamic and diverse bacterial community renowned for its distinctive capabilities in mitigating a [...]
Reply to: Beyond microbial carbon use efficiency
Published: 2023-10-20
Subjects: Biogeochemistry, Earth Sciences
In their commentary, Xiao et al. cautioned that the conclusions on the critical role of microbial carbon use efficiency (CUE) in global soil organic carbon (SOC) storage in a paper by Tao et al. (2023) might be too simplistic. They claimed that Tao et al.’s study lacked mechanistic consideration of SOC formation and excluded important datasets. Xiao et al. brought up important points, which can [...]
Particulate nitrate photolysis as a possible driver of rising tropospheric ozone
Published: 2023-10-20
Subjects: Atmospheric Sciences
Tropospheric ozone is an air pollutant and a greenhouse gas whose anthropogenic production is limited principally by the supply of nitrogen oxides (NOx) from combustion. Tropospheric ozone in the northern hemisphere has been rising despite the flattening of NOx emissions in recent decades. Here we propose that this sustained increase could result from the photolysis of nitrate particles (pNO3-) [...]
Spatial standardization of taxon occurrence data—a call to action
Published: 2023-10-20
Subjects: Biodiversity, Ecology and Evolutionary Biology, Paleobiology, Paleontology, Statistical Methodology
The fossil record is spatiotemporally heterogeneous: taxon occurrence data have patchy spatial distributions, and this patchiness varies through time. Large-scale quantitative paleobiology studies that fail to account for heterogeneous sampling coverage will generate uninformative inferences at best and confidently draw wrong conclusions at worst. Explicitly spatial methods of standardization are [...]
A Deep Learning framework to map riverbed sand mining budgets in large tropical deltas
Published: 2023-10-20
Subjects: Computer Sciences, Earth Sciences, Environmental Education, Environmental Health and Protection, Environmental Monitoring, Environmental Sciences, Natural Resource Economics, Natural Resources and Conservation, Natural Resources Management and Policy, Other Environmental Sciences, Planetary Geomorphology, Planetary Sedimentology, Sustainability, Water Resource Management
Rapid urbanization has dramatically increased the demand for river sand, leading to soaring sand extraction rates that often exceed natural replenishment in many rivers globally. However, our understanding of the geomorphic and social-ecological impacts arising from Sand Mining (SM) remains limited, primarily due to insufficient data on sand extraction rates. Conventionally, bathymetry surveys [...]
Presence of Emerging Contaminants and Antibiotic Resistance Genes in Private Well Water
Published: 2023-10-19
Subjects: Environmental Sciences
Occurrence of emerging contaminants (ECs) including parent compounds, their metabolites, and antibiotic resistance genes (ARGs) and their relationships to common chemical and microbial indicators have rarely been investigated for private wells. In this study, occurrence of 109 parent compounds (ECs), 29 EC metabolites, and 15 ARGs were screened in private well water samples from 57 Southwest [...]
Poroelastic Properties of Sierra White Granite
Published: 2023-10-19
Subjects: Engineering
In this work, poroelastic properties of Sierra White granite are determined, including elastic moduli, Biot's effective stress coefficient, α, and Skempton’s pore pressure coefficient, B. The Biot’s coefficient of this rock was determined using two different approaches. It is found that overall, the Biot’s coefficient decreases from 0.77 at low effective stress (3~4 MPa) to 0.45~0.55 at high [...]
Detection of Hidden Low-Frequency Earthquakes in Southern Vancouver Island with Deep Learning
Published: 2023-10-19
Subjects: Physical Sciences and Mathematics
Low-frequency earthquakes (LFEs) are small-magnitude earthquakes that are depleted in high-frequency content relative to traditional earthquakes of the same magnitude. These events occur in conjunction with slow slip events (SSEs) and can be used to infer the space and time evolution of SSEs. However, because LFEs have weak signals, and the methods used to identify them are computationally [...]
Reproducing the Mid-Piacenzian Warm Period Climate in the 2020s.
Published: 2023-10-17
Subjects: Physical Sciences and Mathematics
The current expectation of climatologists is that levels of atmospheric carbon dioxide (CO2) and other greenhouse gases, such as methane (CH4) and nitrous oxide (N2O), will correspond, in the 2020s, to an increase in mean annual global near-surface atmospheric temperature of less than 1.5°C above the pre-industrial Holocene norm (1750 baseline; atmospheric CO2 = 278 ppm). This paper will argue, [...]
Global ocean spatial suitability for macroalgae offshore cultivation and sinking
Published: 2023-10-17
Subjects: Physical Sciences and Mathematics
Macroalgae offshore cultivation and sinking is considered a potentially practical approach for ocean-based carbon dioxide removal. However, several considerations need to be resolved to assess the effectiveness and sustainability of this approach. Currently, several studies focus on the area required for climate-relevant carbon sequestration through macroalgae cultivation and sinking without [...]
Moving graphs: Predicting barchan dune migration rates from their shapes
Published: 2023-10-17
Subjects: Physical Sciences and Mathematics
In this study, geometric perspectives on sand dune formation and motion are summarized, introduced, and combined to predict time-averaged velocities (migration rates) of barchan dunes directly from their shapes. First, it is proposed that smaller sediment accumulations outpace larger ones due to differences in surface-to-volume ratio. This ratio is defined by a bedform’s wavelength and its [...]
Short-term magma-carbonate interaction: A modelling perspective
Published: 2023-10-17
Subjects: Physical Sciences and Mathematics
The short-term, syn-eruptive interaction of magma with crustal carbonates can largely affect the eruptive style and drive even low-viscosity magmas toward large explosive eruptions. Only a few studies focus on the short-term interaction and the physical processes behind the experimental observations are still poorly understood. In this work, we study for the first time the short-term [...]
Mapping the Landscape of Water and Society Research: Promising Combinations of Compatible and Complementary Disciplines
Published: 2023-10-13
Subjects: Environmental Education, Environmental Engineering, Environmental Studies, Geographic Information Sciences, Human Geography, Hydraulic Engineering, Hydrology, Natural Resource Economics, Natural Resources Management and Policy, Physical and Environmental Geography, Spatial Science, Sustainability, Water Resource Management
Coupled human-water systems (CHWS) are diverse and have been studied across a wide variety of disciplines. Integrating multiple disciplinary perspectives on CHWS provides a comprehensive and actionable understanding of these complex systems. While interdisciplinary integration has often remained elusive, specific combinations of disciplines might be comparably easier to integrate (compatible) [...]