Do transparent exopolymeric particles (TEP) affect the toxicity of nanoplastics on Chaetoceros neogracile?
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چکیده
منابع مشابه
Carbon content and C:N ratio of transparent exopolymeric particles (TEP) produced by bubbling exudates of diatoms
The carbon content of transparent exopolymeric particles (TEP) was measured in the laboratory in particles produced by bubbling exudates of the dlaton~ Thalassiosira weissflogij, grown under nitrogen non-limited conditions (N:P = 7). The carbon content of these parhcles ( R P C ) appears to vary as a function of their size according to TEP-C = 0.25 X 10-= r255 (pg C TEP-I), where r is the equiv...
متن کاملTransparent exopolymer particles (TEP) in aquatic environments
Since the development of methods to quantify transparent exopolymer particles (TEP) 1993, it has been shown that these gel-particles are not only ubiquitous and abundant, but also play a significant role in the biogeochemical cycling of elements and the structuring of food webs. TEP may be quantified either microscopically or colorimetrically. Although data based on measurements using one or ot...
متن کاملSeasonal size spectra of transparent exopolymeric particles ( TEP ) in a coastal sea and comparison with those predicted using coagulation theory
The abundance and size distribution of transparent exopolymeric particles (TEP) were monitored in the Kattegat (Denmark) during 1 yr. TEP number concentration ranged from 0.5 X 105 to 3.8 X 105 ml-' and the volume concentration between 3 and 310 ppm. TEP volume concentration peaked during the spring bloon~ and again during the summer period. The observed accun~ulation of TEP during summer is co...
متن کاملTransparent Exopolymeric Particles (TEP) Selectively Increase Biogenic Silica Dissolution From Fossil Diatoms as Compared to Fresh Diatoms
Diatom production is mainly supported by the dissolution of biogenic silica (bSiO2) within the first 200m of the water column. The upper oceanic layer is enriched in dissolved and/or colloidal organic matter, such as exopolymeric polysaccharides (EPS) and transparent exopolymeric particles (TEP) excreted by phytoplankton in large amounts, especially at the end of a bloom. In this study we explo...
متن کاملProduction of transparent exopolymer particles (TEP) by phyto- and bacterioplankton
Transparent exopolymer particles (TEP) exist abundantly in oceans and lakes and have been found to play an important role in sedimentation and biochemical cycling of matter. However, the origin of these particles and the factors regulating their formation are not well understood. This study examined several strains of algae and bacteria with respect to their production of TEP or TEP precursors....
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ژورنال
عنوان ژورنال: Environmental Pollution
سال: 2019
ISSN: 0269-7491
DOI: 10.1016/j.envpol.2019.04.093