A5026558216- Marine and coastal ecosystems
- Toxic Organic Pollutants Impact
- Microbial Community Ecology and Physiology
- Isotope Analysis in Ecology
- Wastewater Treatment and Nitrogen Removal
- Peatlands and Wetlands Ecology
- Coastal wetland ecosystem dynamics
- Microplastics and Plastic Pollution
- Groundwater and Isotope Geochemistry
- Microbial bioremediation and biosurfactants
- Aquatic Ecosystems and Phytoplankton Dynamics
- Tropical and Extratropical Cyclones Research
- Oil Spill Detection and Mitigation
- Soil and Water Nutrient Dynamics
- Effects and risks of endocrine disrupting chemicals
- Ocean Acidification Effects and Responses
- Marine and environmental studies
- Mass Spectrometry Techniques and Applications
- Marine Biology and Ecology Research
- Plant Disease Resistance and Genetics
- Pesticide and Herbicide Environmental Studies
- Environmental Science and Water Management
- Species Distribution and Climate Change
- Aquatic and Environmental Studies
- Diatoms and Algae Research
Shanghai Key Laboratory of Trustworthy Computing
2024
Jinan University
2024
The University of Texas at Austin
2017-2024
US Forest Service
1967
Using 15N stable isotope as a tracer to quantify N transformation rates in isotope-enrichment experiments improves understanding of the cycle various ecosystems. However, measuring 15N-nitrate (15NO3−) small volumes water for these is major challenge due inconvenience preparing samples by traditional techniques. We developed "REOX/MIMS" method applying membrane inlet mass spectrometry (MIMS) determining 15NO3− concentrations from after converting dissolved inorganic N2. The nitrates (NO3− +...
Tropical cyclones drive coastal ecosystem dynamics, and their frequency, intensity, spatial distribution are predicted to shift with climate change. Patterns of resistance resilience were synthesized for 4138 time series from n = 26 storms occurring between 1985 2018 in the Northern Hemisphere predict how ecosystems will respond future disturbance regimes. Data grouped by (fresh water, salt terrestrial, wetland) response categories (biogeochemistry, hydrography, mobile biota, sedentary...
Abstract Global reactive nitrogen (N) has increased dramatically in coastal marine ecosystems over the past decades and caused numerous eco‐environmental problems. Coastal sediment plays a critical role N losses via denitrification anaerobic ammonium oxidation (anammox) release of nitrous oxide (N 2 O). However, both magnitude contributions denitrification, anammox, O production sediments still remain unclear, causing uncertainty defining budget for ecosystems. Here potential rates losses,...
Deciphering molecular structures of dissolved organic matter (DOM) components is key to understanding the formation and transformation this globally important carbon pool in aquatic environments. Such a task depends on integrated use complementary analytical techniques. We characterize structure natural DOM using an ion mobility quadrupole time flight liquid chromatography mass spectrometer (IM Q-TOF LC/MS), which provides multidimensional structural information molecules. Geometric...
Cyanobacterial harmful algal blooms (CyanoHABs) are enhanced by anthropogenic pressures, including excessive nutrient (nitrogen, N, and phosphorus, P) inputs a warming climate. Severe eutrophication in aquatic systems is often manifested as non-N2-fixing CyanoHABs (e.g., Microcystis spp.), but the biogeochemical relationship between N inputs/dynamics needs definition. Community biological ammonium (NH4+) demand (CBAD) relates dynamics to total microbial productivity NH4+ deprivation systems....
Effects of nitrogen pollution on bacterial community shifts in river sediments remain barely understood. Here, we investigated the communities urban and suburban rivers a highly urbanized city, Shanghai. Sediment nitrate (NO3−) ammonia (NH4+) were accumulated river. Operation Taxonomic Units (OTUs), Abundance-based Coverage Estimators (ACEs) Chao 1 estimator slightly lower than those rivers, while Shannon Simpson indices higher rivers. Proteobacteria, Firmicutes, Bacteroidetes dominant...
Riverine dissolved organic matter (DOM) is a major source of reduced carbon exported from land to marine environments, and the inflow riverine greatly affects biogeochemical cycling in estuaries bays. Thus, any change DOM composition, such as changes caused by flood waters result storms hurricanes, can subsequently affect estuarine environments. To investigate impact high flow events on DOM, multidimensional molecular level information four south Texas Rivers (Aransas, Lavaca, Mission,...
Polycyclic aromatic hydrocarbons (PAHs) are among the most widespread organic contaminants in environment, and anthropogenic activities can produce PAHs through a variety of pyrogenic or petrogenic means. Knowing concentrations sources helps evaluate ecosystem health manage natural resources. In this study, 16 US Environmental Protection Agency priority were analyzed water sediment samples collected from September 2021 to 2023 four bay systems along south central Texas coast, which hotpot...
Abstract Dissolved organic nitrogen (DON) is actively involved in N cycling and transformation processes the ocean, yet how this large pool formed remains elusive. Here we incubated 15 N‐labeled individual amino acids (Ala, Val, Phe) seawater monitored their fates over 21 days. About 25%–45% of Phe‐N Val‐N were transformed to “uncharacterizable DON,” as compared only about 6% for Ala‐N, indicating formation refractory DON related specific acids. Through a stable isotope probing approach, 5...
Abstract Organic contaminants in agricultural soils are widely reported; however, their accumulation patterns quite different among regions. This study reports the distribution, and risk assessment of polycyclic aromatic hydrocarbons (PAHs), dichlorodiphenyltrichloroethane (DDT) hexachlorocyclohexane (HCH) from Corn Belt northeast China at a regional scale. Concentrations PAHs, DDT HCH were 306‐5300, 6.00–82.0 4.07–15.6 ng g −1 , respectively. Source analysis suggests PAHs derived combustion...