In the present study, changes in microbial populations, enzyme activity and bacterial community structure contaminated soils were investigated during bioremediation of using Stenotrophomonas sp. strain DXZ9 ryegrass. The results showed that removal rates 81% for DDT 55% DDE (69% DDTs) with ryegrass-microbe. Microbial was remarkably improved, number bacteria increased sharply from 7.32 × 106 to ...

The remediation of soil contaminated by 1,1,1-trichloro-2,2-bis(4-chlorophenyl)ethane (DDT) remains an important issue in environmental research. Although our previous studies demonstrated that earthworms could enhance the degradation DDT soils, underlying mechanisms and microorganisms involved these transformation processes are still not clear. Here we studied sterilized/non-sterilized drilosp...

Abstract. Persistent organic pollutants (POPs) are synthetic compounds that were intentionally produced in large quantities and have been distributed the global environment, originating a threat due to their persistence, bioaccumulative potential, toxicity. POPs reach Antarctic continent through long-range atmospheric transport (LRAT). In these areas, low temperatures play significant role envi...

We examined the maternal transfer of organochlorine contaminants (OCs), pesticides (DDTS and HCHs) and polychlorinated biphenyls (PCBs), and the temporal variation of blood and eggs concentrations from 38 leatherback turtles (Dermochelys coriacea) nesting in French Guiana. PCBs were found to be the dominant OCs with respective mean concentrations of 55.14 ng g(-1) lipid-mass for egg and 1.26 ng...

Persistent organic pollutants (POPs), specifically PCBs, PBDEs, and DDTs, in the marine environment are well documented, however accumulation and mobilization patterns at the top of the food-web are poorly understood. This study broadens the understanding of POPs in the endangered Southern Resident killer whale population by addressing modulation by prey availability and reproductive status, al...

Lysosomal responses in the digestive cells of Mytilus eduljs from 9 sites in Puget Sound, Washington. USA, with varying degrees of sediment contamination were measured using automatic image analysis. Mussels from urban-associated sltes (areas with elevated sediment concentration of anthropogenic contaminants such as PAHs, PCBs. DDTs, and toxic elements) showed pathological changes in the lysoso...

Chemical contamination of fish from the Salton Sea, a quasi-marine lake in Southern California, could adversely impact millions of birds using the Pacific Flyway and thousands of humans using the lake for recreation. Bairdiella icistia (bairdiella), Cynoscion xanthulus (orangemouth corvina), and Oreochromis spp. (tilapia) were sampled from two river mouths and two nearshore areas of the Salton ...

In this study, the occurrence of the polycyclic musk fragrances HHCB (1,3,4,6,7,8-hexahydro-4,6,6,7,8,8-hexamethylcyclopenta[g]-2-benzopyran) and AHTN (7-acetyl-1,1,3,4,4,6-hexamethyltetrahydeonaphthalene) in marine mammals and sharks collected from Japanese coastal waters is reported. HHCB was present in the blubbers of all finless porpoises (Neophocaena phocaenoides) analyzed (n = 8), at leve...