In situ sinking-particle flux from collection rates of cylindrical traps

Marine snow derived from abandoned larvacean houses: sinking rates, particle content and mechanisms of aggregate formation

The dynamics and formation mechanisms of marine snow aggregates from abandoned larvacean houses were examined by laboratory experiments and field sampling during a spring diatom bloom in a shallow fjord on the west coast of the USA. Intact aggregates were sampled both from sediment traps and directly from the water column by divers. All aggregates were composed of 1 abandoned house of the larva...

Bacterial vs. zooplankton control of sinking particle flux in the ocean’s twilight zone

The downward flux of particulate organic carbon (POC) decreases significantly in the ocean’s mesopelagic or ‘twilight’ zone due both to abiotic processes and metabolism by resident biota. Bacteria and zooplankton solubilize and consume POC to support their metabolism, but the relative importance of bacteria vs. zooplankton in the consumption of sinking particles in the twilight zone is unknown....

Bacterial vs . zooplankton control of sinking particle flux in the ocean ’ s twilight zone 1 2

The Effect of Brine on the Collection Efficiency of Cylindrical Sediment Traps

ent traps are frequently used to measure the downward flux of particles in the protocols recommend filling these traps with brine (50 psu in excess of ambient) to better retain the collected sample. However, this also changes the aspect ratio ritical parameter affecting the trapping effkiency. We conducted controlled flume that demonstrate filling traps with a 5 psu brine decreases their trappi...

the role of russia in transmission of energy from central asia and caucuses to european union

پس ازفروپاشی شوروی،رشد منابع نفت و گاز، آسیای میانه و قفقاز را در یک بازی ژئوپلتیکی انرژی قرار داده است. با در نظر گرفتن این منابع هیدروکربنی، این منطقه به یک میدانجنگ و رقابت تجاری برای بازی های ژئوپلتیکی قدرت های بزرگ جهانی تبدیل شده است. روسیه منطقه را به عنوان حیات خلوت خود تلقی نموده و علاقمند به حفظ حضورش می باشد تا همانند گذشته گاز طبیعی را به وسیله خط لوله مرکزی دریافت و به عنوان یک واس...