A5071318891- Marine and coastal ecosystems
- Marine Biology and Ecology Research
- Isotope Analysis in Ecology
- Climate change and permafrost
- Soil and Water Nutrient Dynamics
- Atmospheric and Environmental Gas Dynamics
- Radioactive contamination and transfer
- Mercury impact and mitigation studies
- Aquatic Ecosystems and Phytoplankton Dynamics
- Geology and Paleoclimatology Research
- Groundwater and Isotope Geochemistry
- Arctic and Antarctic ice dynamics
- Coastal wetland ecosystem dynamics
- Oceanographic and Atmospheric Processes
- Heavy metals in environment
- Methane Hydrates and Related Phenomena
- Water Quality Monitoring and Analysis
- Ocean Acidification Effects and Responses
- Geochemistry and Elemental Analysis
- Radioactive element chemistry and processing
- Cryospheric studies and observations
- Peatlands and Wetlands Ecology
- Oil Spill Detection and Mitigation
- Atmospheric chemistry and aerosols
- Microbial Community Ecology and Physiology
University of Wisconsin–Milwaukee
2016-2025
Hisense (China)
2023
Southeast University
2023
Shanghai Academy of Environmental Sciences
2022
Shandong Jianzhu University
2022
Shandong Institute of Business and Technology
2022
Wuyi University
2020-2021
Stennis Space Center
2007-2019
University of Southern Mississippi
2008-2019
China University of Geosciences (Beijing)
2019
The recent warming in the Arctic is affecting a broad spectrum of physical, ecological, and human/cultural systems that may be irreversible on century time scales have potential to cause rapid changes earth system. response carbon cycle climate major issue global concern, yet there has not been comprehensive review status contemporary its change. This designed clarify key uncertainties vulnerabilities ongoing climatic While it clear are substantial stocks Arctic, also significant associated...
Here, we report the initial observations of distributions polycyclic aromatic hydrocarbons (PAH) in subsurface waters near Deepwater Horizon oil well site (also referred to as Macondo, Mississippi Canyon Block 252 or MC252 well). Profiles situ fluorescence and beam attenuation conducted during 9‐16 May 2010 were characterized by distinct peaks at depths greater than 1000 m, with highest intensities close wellhead decreasing increasing distance from wellhead. Gas chromatography/mass...
As the permafrost region warms, its large organic carbon pool will be increasingly vulnerable to decomposition, combustion, and hydrologic export. Models predict that some portion of this release offset by increased production Arctic boreal biomass; however, lack robust estimates net balance increases risk further overshooting international emissions targets. Precise empirical or model-based assessments critical factors driving are unlikely in near future, so address gap, we present from 98...
Fluorescence excitation emission matrices (EEM) and parallel factor (PARAFAC) analysis have been widely used in the characterization of dissolved organic matter (DOM) aquatic continuum. However, large sample sets are typically needed for establishing a meaningful EEM-PARAFAC model. Applications technique to individual samples require new approaches. Here, flow field-flow fractionation (FlFFF) combined with offline EEM measurements PARAFAC was elucidate dynamic changes DOM composition/optical...
The major risk of microplastics in marine environments is the bioaccumulation organisms. Plastic ingestion by organisms has been investigated and recently more attention given to seafood. However, it seldom reported occurrence commercial dried fish products available for human consumption. Here, we report 14different from seven Asian countries. Microplastics were observed most fish, with fibers representing ~80% total-microplastics. plastic polymers, identified using Micro-Raman...
Plant roots are one of the major mediators that allocate carbon captured from atmosphere to soils as rhizodeposits, including root exudates. Although rhizodeposition regulates both microbial activity and biogeochemical cycling nutrients, effects particular exudate species on soil fluxes key rhizosphere microorganisms remain unclear. By combining high-throughput sequencing, q-PCR, NanoSIMS analyses, we characterized bacterial community structure, quantified total bacteria depending chemistry,...
Soil organic carbon (SOC) in coastal wetlands, also known as "blue C," is an essential component of the global C cycles. To gain a detailed insight into blue storage and controlling factors, we studied 142 sites across ca. 5000 km covering temperate, subtropical, tropical climates China. The wetlands represented six vegetation types (Phragmites australis, mixed P. australis Suaeda, single Spartina alterniflora, mangrove [Kandelia obovata Avicennia marina], tidal flat) three invaded by S....
ABSTRACT Coastal wetlands contain very large carbon (C) stocks—termed as blue C—and their management has emerged a promising nature‐based solution for climate adaptation and mitigation. The interactions among sources, pools, molecular compositions of soil organic C (SOC) within ecosystems (BCEs) remain elusive. Here, we explore these along an 18,000 km long coastal line salt marshes, mangroves, seagrasses in China. We found that mineral‐associated (MAOC) is enriched BCEs dominated by...
Natural organic matter was collected from the upper Yukon River and size fractionated into <1 kDa low‐molecular‐weight dissolved (LMW‐DOC), colloidal (COC, 1 to 0.45 μm) particulate carbon (POC, >0.45 phases for characterization of elemental (C N) isotopic ( 13 C, 14 C 15 composition examine their sources transport. Concentrations total (TOC) decreased 3010 μM in mid‐May 608 September, accompanying an increase river water δ 18 O snowmelt summer early fall. COC predominant OC species,...
Arctic warming may cause the release of vast amounts soil organic carbon (SOC) from permafrost, which will manifest itself in fluxes and composition northern rivers coastal regions. To elucidate transport pathways SOC, radiocarbon was measured for dissolved (DOC), particulate (POC), sediments SOC Mackenzie, Sagavanirktok, Yukon river basins, leaching experiments were conducted. The ages riverine suspended POC ranged 4430 to ∼7970 yr BP, while DOC much younger (390–1440 BP) except samples Sag...
Cross‐flow ultrafiltration techniques and a high‐temperature combustion (HTC) method were used to investigate the distributions fluxes of dissolved (DOC) colloidal organic carbon (COC) in Gulf Mexico Middle Atlantic Bight. Concentrations DOC both regions decreased from ≤80 u M surface waters ∼45 µM deep showed large vertical gradients subsurface layer. The oceanographically consistent. A conservative mixing behavior was observed slope waters, water processes important factors controlling...
Surface sediments were collected during the 2000 TransArctic Expedition along Siberian Arctic coastline, including Ob, Yenisey, Khatanga, Lena, and Indigirka estuaries. Sediments characterized for elemental composition (total organic carbon, TOC, black BC, total N, as well major trace elements), isotopic signature (δ 13 C, δ 15 Δ 14 ε Nd , 87 Sr/ 86 Sr), molecular to better understand river export variations over large spatial scale of Arctic. On average, 79 ± 9% C in was while 21 inorganic....
In order to study the role of polysaccharides (PS) in colloidal organic matter (COM) pool for complexing 234 Th, controlled laboratory experiments were carried out determine chemical nature strong Th(IV) binding macromolecular ligands (>1 kDa). The partition coefficient Th between marine COM and solution, K c , is higher than that any known mineral sorbent. PS‐enriched fractions had highest ( ) sorbent Th. other metals, including Fe, Mn, Zn, Pb, Pu, up an magnitude bulk COM. Most...
[1] Carbon, nitrogen, and material fluxes were quantified at 48 sampling locations along the 1957 km coastline of Beaufort Sea, Alaska. Landform characteristics, soil stratigraphy, cryogenic features, ice contents determined for each site. Erosion rates sites using satellite images aerial photos, averaged across increased from 0.6 m yr−1 during circa 1950–1980 to 1.2 1980–2000. Soils highly cryoturbated, organic carbon (OC) stores ranged 13 162 kg OC m−2 in banks above sea level 63 over...