Coral reef ecosystems provide many functions, services and goods to coastal populations, especially in the developing world. A variety of anthropogenic practices threatens reef health and therefore jeopardises the benefits flowing from these services and goods. These threats range from local pollution, sedimentation, destructive fishing practices and coral mining to global issues like coral ble...

The concentrations of polychlorinated biphenyls (PCB), hexachlorobenzene (HCB), pentachlorobenzene (PeCB) and polybrominated diphenylethers (PBDE) were described in benthic and pelagic species collected off Adélie Land, Antarctica. Strong differences were observed among species, with reduced PeCB and HCB levels in benthic species, and elevated PCB levels in the Antarctic yellowbelly rockcod, th...

Low-latitude continental shelves, mixed siliciclastic–carbonate sedimentary systems, provide an understanding of sedimentary environments driven by paleoclimatological processes. The Bonaparte Gulf, northwestern Australian continental shelf, is among the widest in the world, ranging to 500 km, with shallow carbonate terraces and platforms that were exposed during periods of lower sea level. The...

The distribution of coliforms in the sediments around three marine sewage outfalls was investigated. It was found that coliform fields extended for considerable distances around the two outfalls discharging unchlorinatcd primary treatment effluent and that a less extensive field existed around the outfall discharging more highly treated sewage. In general, the coliforms in the sediments were fo...

The deterioration of many coral reef ecosystems worldwide is a clear example of not only the effects global environmental damage can have on our oceans’ health, but also damage from local sources of pollution. This damage is multi-factorial as are its consequences. Since the 1970’s, mounting evidence has built a convincing argument that human activities are a prominent cause (e.g., coastal urba...

Organic carbon (OC) and n-alkanes were investigated in the suspended matter (SM) and sur®cial sediments of the Arctic Ob and Yenisei Rivers and the adjacent Kara Sea. Organic nitrogen and dC values were determined as additional parameters in the sediments. OC and n-alkane concentrations were highly variable in space. This variability was interpreted as the result of a complex sedimentation patt...

Quaternary sea level fluctuations have greatly affected the sediment budgets of the continental shelves. Previous studies suggested that this caused a considerable increase in the net loss of shelf sediments. Since sediment accumulation and erosion are closely tied to the formation and re-oxidation of pyrite, we use a high-resolution record of sulfur isotope ratios (S / S) of marine sulfate to ...

Abstract Late Cenozoic was a period of large-scale extension in the Aegean. The is mainly recorded metamorphic core complexes with little data from sedimentary sequences. exception Thrace Basin northern Aegean, which has continuous record Middle Eocene to Oligocene marine sedimentation. In Basin, Oligocene–Early Miocene characterized by north-northwest (N25°W) shortening leading termination sed...

sedimentation is one of the most important problems in harbors that results in considerable economic costs. harbor planforms affects the flow pattern in the harbor basin and consequently, plays an important role in sediment transport and sedimentation. in the present study, a two dimensional depth-averaged hydrodynamic and sediment transport model has been developed to investigate the effect of...