Mineral dust is a key source of essential micronutrients, particularly iron (Fe), for phytoplankton in the Southern Ocean. However, observations deposition over Ocean are sparse, hindering assessments its influence on marine biogeochemistry. We present time series (2010-2019) lithogenic particle flux estimates using sediment trap samples collected at 1000 m depth subantarctic Time Series (SOTS)...

Reservoirs overflow during flood season because of sedimentation cycles, which severely affects their effectiveness. Siltation is a major problem in dams constructed waterways arid and semi-arid areas. Therefore, the reservoirs wadis lose capacity due to sedimentation. This study determines an optimal design trapping basin on steep slope areas for Wadi Bishah Asir region southwestern Saudi Arab...

Vitamin B1, or thiamin, can limit primary productivity in marine environments, however the major marine environmental sources of this essential coenzyme remain largely unknown. Vitamin B1 can only be produced by organisms that possess its complete synthesis pathway, while other organisms meet their cellular B1 quota by scavenging the coenzyme from exogenous sources. Due to high bacterial cell d...

The estimated diffusion fluxes of methane (CH4) and carbon dioxide (CO2) at the sediment-water interface in the Rzeszów Reservoir in southeastern Poland are presented. The relevant studies were conducted during 2009, 2010, and 2011. Calculated fluxes ranged from 0.01 to 2.19 mmol m-2 day-1 and from 0.36 to 45.33 mmol m-2 day-1 for methane and carbon dioxide, respectively. While the values for c...