Humans, Hydrology, and the Distribution of Inorganic Nutrient Loading to the Ocean

Future Nutrient Load Scenarios for the Baltic Sea Due to Climate and Lifestyle Changes

“…As previously shown in Smith et al (2003) and Smith et al (2005), population density and river discharge can, on a larger scale and to a first order, be seen as robust proxies for the flux of total nitrogen (TN) and total phosphorus (TP) from hydrologic catchments. Thus we have chosen to use this simple regression approach to assess the magnitude and trends associated with potential changes in riverine nutrient fluxes from major Baltic Sea sub-basins under future climate and population change scenarios.…”

Chapter 1 Impacts of the Oceans on Climate Change

“…There has been an enhanced riverine input of N and P to near shore regions over the last century and especially since $1950 that in some cases have caused eutrophication and elsewhere has been buried in organic carbon in sediments (Smith et al, 2003). The latter study derived estimates based on population relationships that are three times higher than those derived in the 1970s.…”

“…1.13). As a contrast to the Northern Hemisphere, more than two-thirds of the global sedimented silica is deposited south of the Polar Front under the ACC (Smith et al, 2003;Wischmeyer et al, 2003). In a modelling study of the silicon cycle, Yool and Tyrrell (2003) show that the ecological success of diatoms varies inversely with the concentration of silicic acid and thus through a negative feedback controls the cycle.…”

Influence of effluents from a Wastewater Treatment Plant on nutrient distribution in a coastal creek from southern Brazil

“…Nowadays, eutrophication is considered one of the greatest threats to the coastal ecosystems (Goldberg, 1995), leading to a reduction in aquatic biodiversity, a disordered growth of primary producers, and increasing respiration rates in response to the rapid production of organic matter (Esteves, 1998;Júnior et al, 2006;Pereira et al, 2005). Global nutrient inputs into the coastal ocean is an increasing environmental problem, as it has tripled between the 1970s and the 1990s (Smith et al, 2003).…”