115, 144, 146 For example, a study examining two bays in Thailand, one sewage impacted and the other not, found that the sewage-impacted bay had significant increases in turbidity and inorganic nutrients.
The results show that fiddler crabs presented moderate mortality levels in these artificial mangrove wetlands, but mainly in sewage impacted cells.
87, 160 We would expect sewage impacts to be strongest in areas in close proximity to human populations, especially in areas with low flushing.
Remarkably, despite the extent of this threat, both scientists and conservationists have paid relatively less attention (e.g., in comparison to overfishing) to understanding and abating sewage impacts on coral reefs.
We demonstrate this in two very different environments: a thermally polluted and sewage-impacted estuary Mount Hope Bay (MHB) in Somerset, Massachusetts, and the continental shelf off the western Antarctic Peninsula (Palmer Station – PAL).
In Mar del Plata (Argentine, SW Atlantic), a large seaside resort, the sewage discharges impact the littoral ecosystem.
The results indicate increase in nitrogen (N) and phosphorus (P) concentrations that trigger eutrophication.High concentrations of nutrients at the Upper Umia derive from livestock, while at the Lower Umia the origin is sewage, highlighting impacts from diffuse pollution and point source pollution in different areas of the basin.
In order to evaluate the material in view of its sustainability performance, a probabilistic analysis has been employed where UHPFRCC is compared with a regular Grade 40 concrete and with a low environmental impact sewage sludge concrete.
Health experts say Rio's poor wastewater management has already created endemic illnesses associated with sewage that disproportionately impact the city's poor, including gastrointestinal and respiratory problems, Hepatitis A and severe heart and brain conditions.
