Influence of land use on trophic state indexes in northeast Brazilian river basins

Lopes, Olandia Ferreira; Rocha, Felizardo Adenilson; Sousa, Lucas Farias de; Silva, Daniela Mariano Lopes da; Amorim, Andrique Figueiredo; Gomes, Ronaldo Lima; Silva, André Luiz Sampaio da; Jesus, Raildo Mota de

doi:10.1007/s10661-019-7188-7

Cited by 19 publications

(2 citation statements)

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“…Meanwhile, surface runoff is one of the most important processes causing the migration of pollutants from the basin land phase to the river, and future changes in temperature and precipitation will have a major impact on this process. Therefore, there is a justified risk of altering biomass production in river basins. , …”

Section: Introductionmentioning

confidence: 99%

“…While the anthropogenic factors influencing biomass production are well described, the impact of climate change is still ambiguous. ,, The processes contributing toward eutrophication in a river can be distinguished between the land and river bed phases. In the land phase, a precipitation increase in selected months of the year will contribute to intensification of the surface runoff and pollutant wash-out , and their subsequent transport into a river. This process may be partially limited by an increase in temperature, leading to, among the others, an extension of the vegetation period .…”

Section: Introductionmentioning

confidence: 99%

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Biomass Production Potential in a River under Climate Change Scenarios

Orlińska-Woźniak

Szalińska

Jakusik

et al. 2021

Environ. Sci. Technol.

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Excessive production of biomass, in times of intensification of agriculture and climate change, is again becoming one of the biggest environmental issues. Identification of sources and effects of this phenomenon in a river catchment in the space–time continuum has been supported by advanced environmental modules combined on a digital platform (Macromodel DNS/SWAT). This tool enabled the simulation of nutrient loads and chlorophyll “a” for the Nielba River catchment (central-western Poland) for the biomass production potential (defined here as a TN:TP ratio) analysis. Major differences have been observed between sections of the Nielba River with low biomass production in the upper part, controlled by TN:TP ratios over 65, and high chlorophyll “a” concentrations in the lower part, affected by biomass transport for the flow-through lakes. Under the long and short-term RCP4.5 and RCP8.5 climate change scenarios, this pattern will be emphasized. The obtained results showed that unfavorable biomass production potential will be maintained in the upper riverine sections due to a further increase in phosphorus loads induced by precipitation growth. Precipitation alone will increase biomass production, while precipitation combined with temperature can even enhance this production in the existing hot spots.

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Section: Introductionmentioning

confidence: 99%