Human activities have doubled the pre-industrial supply of reactive nitrogen on Earth, and
future rates of increase are expected to accelerate. Yet little is known about the capacity of …

Elemental (total organic carbon (TOC) and total nitrogen (TN)) and stable carbon and
nitrogen isotope compositions (δ13C and δ15N, respectively) in the surface sediment of …

The south‐east margin of Tibet is highly sensitive to global environmental change
pressures, in particular, high contemporary reactive nitrogen (Nr) deposition rates (ca. 40 kg …

Annually laminated sediments in Lake Xiaolongwan, northeast China, contain a suite of n-
alkanes (C 17–C 33) with a strong odd over even carbon number predominance. Biomarker …

The climate history of the source area of the Yellow River (SAYR) is important to
understanding the pacing and processes of climate evolution on the northeastern Qinghai …

Ecological responses to climate change are strongly regulated by long-term processes, such
as changes in species composition and carbon dynamics in soil; therefore, understanding …

The nitrogen stable isotopic signature (δ 15 N) of sediment is a powerful tool to understand
eutrophication history, but its interpretation remains a challenge. In a large-scale …

We applied a mixing model based on stable isotopic δ 13 C, δ 15 N, and C: N ratios to
estimate the contributions of multiple sources to sediment nitrogen. We also developed a …

Mercury and its derivatives are hazardous environmental pollutants and could affect the
aquatic ecosystems and human health by biomagnification. Lake sediments can provide …

Nitrogen isotope (δ 15 N) analysis has been used to evaluate depositional redox conditions
in well-preserved sedimentary systems; however, fewer N-isotope studies have been …