The role of tidal wetlands as hotspots for carbon and nutrient exchange with adjacent waters has been well documented, but large uncertainties remain regarding the physical biogeochemical controls on these fluxes. This implications coastal cycling budgets. study elucidates variability in lateral wetland dissolved organic (DOC) fluxes tidally, seasonally, during extreme weather events a brackish...

This paper aims to characterize the evolution of organic matter during the composting of municipal solid waste (MSW). During the 46-day composting process, six samples with different composting time were collected from Songjiang Solid Waste Biological Treatment Plant in Shanghai, China. Dissolved organic matter (DOM) was extracted by ultra-pure water, and the UV-Visible (UV-Vis) spectra of DOM ...

Four whole-lake inorganic C addition experiments were conducted in lakes of differing trophic status. Inorganic C addition enriched algal carbon in C and changed the C-DOC by +1.5& to +9.5&, depending on the specific lake. This change in C-DOC represented a significant input of algal DOC that was not completely consumed by bacteria. We modeled the dynamics in C-DOC to estimate the fluxes of alg...

OBJECTIVE Melatonin plays a key role in the proper functioning of the circadian timing system (CTS), and exogenous melatonin has been shown to be beneficial in cases of CTS and sleep disturbances. Nevertheless, the concept of "melatonin deficit" has yet to be defined. The aim of our study was, therefore, to determine the relationship between the degree of pineal calcification (DOC) and a range ...

Abstract Background Rivers and streams are one of the primary sources nitrous oxide (N 2 O) which is an important greenhouse gas with great global warming potential. Yet, over past century, human activities have dramatically increased reactive nitrogen loadings into consequently led to N O emission from river ecosystems. Here, we carried out a study in two subtropical rivers, i.e., Jinshui Rive...

Chemical composition of water and dissolved organic carbon (DOC) levels were investigated over three years, along two large rivers in NE Poland, with different hydrological regimes. One river was from lakeland and the second a typical lowland river with forests and high contributions of peatlands in the catchment. The study involved hydrological (specific runoff, river discharge) effects on the...

Peatlands are wetlands that contain higher amounts of carbon, some which is often released with water in dissolved form, especially when land use change occurs. However, peatland carbon mostly stabilized humic fractions where it forms complexes metallic elements. This study sought to measure the levels organic (DOC) rivers and analyze link between physicochemical parameters along Buhandanda Lus...