Sediment and total phosphorous contributors in Rock River watershed

Mbonimpa, Eric; Yuan, Yongping; Nash, Maliha S.; Mehaffey, Megan

doi:10.1016/j.jenvman.2013.11.030

Cited by 15 publications

(12 citation statements)

References 22 publications

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“…3) has clay soils with relatively low erodibility (Tables 3 and 4); it also has the lowest mean slope (Table 5) and an annual average rainfall of 4506 mm, which is substantially lower than the mean of the study watersheds (Table 7). All these factors suggest that watershed 3 should have a much lower SS load; however, it has the highest percentage of developed land (47 % - Table 2), which may outweigh the other factors (Lenat and Crawford, 1994;Mbonimpa et al, 2014). The driver for SS load in the watershed of monitoring station 1 (second highest load, Table 7) was not developed lands (only 8 % - Table 2), but likely was associated with the much steeper slopes (Table 5).…”

Section: Comparison Of Ss Load Among Different Usgs Monitoring Stationsmentioning

confidence: 99%

“…Various studies have linked stream pollutants to landscape variables using process-based hydrological models (Jha et al, 2010;Ullrich and Volk, 2009;Hu and Yuan, 2013) and/or statistical methods (Lenat and Crawford, 1994;Nie et al, 2011;Mbonimpa et al, 2014). Process-based hydrologic models have been used successfully to character-ize watershed processes and sources of stream pollutants, but they require detailed input data, which may not be available for some areas.…”

Section: Introductionmentioning

confidence: 99%

“…For example, when Lenat and Crawford (1994) analyzed water samples from three watersheds having different dominant land use (forest, urban, or agricultural) in the Piedmont ecoregion of North Carolina, they found urban land use was the greatest contributor to sediment loss. Mbonimpa et al (2014) identified urban land use and agricultural land growing corn as the main factors that caused increases in total suspended sediment and total phosphorous in streams, using partial least squares (PLS) regression analysis. The objective of our study was to evaluate the influence of landscape characteristics on levels of suspended sediment and identify factors that impact sediment loss, using statistical methods.…”

Section: Introductionmentioning

confidence: 99%

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Sediment loss and its cause in Puerto Rico watersheds

Yuan

Jiang

Taguas³

et al. 2015

SOIL

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Abstract.A major environmental concern in the Commonwealth of Puerto Rico is increased sediment load to water reservoirs, to estuaries, and finally to coral reef areas outside the estuaries. Sediment deposition has significantly reduced the storage capacity of reservoirs, and sediments, with their associated contaminants and nutrients that are adsorbed, can stress corals and negatively impact reef health. To prevent and manage sediment loss it is therefore important to understand local soil erosion and sediment transport processes. The main objective of this study was to determine the influence of landscape characteristics on sediment loss. We analyzed available precipitation and sediment data collected in Puerto Rico during the past three decades, as well as information on land use, soil properties, and topography. Our partial least squares analysis was not very successful in identifying major factors associated with sediment loss due to the complexity of the study's watersheds; however, it was found that topography and rainfall factors do not play a leading role. Sediment loss from the ridge watersheds in Puerto Rico was mainly caused by interactions of development, heavy rainfall events (especially hurricanes), and steep mountainous slopes associated with the ridges. These results improve our understanding of sediment loss resulting from changes in land use/cover within a Puerto Rico watershed, and allow stakeholders to make more informed decisions about land use planning.

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Section: Comparison Of Ss Load Among Different Usgs Monitoring Stationsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Sediment loss and its cause in Puerto Rico watersheds

Yuan

Jiang

Taguas³

et al. 2015

SOIL

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“…In recent decades, human activities, in particular agriculture, caused increased nutrient concentrations in continental and coastal water bodies (Mbonimpa et al, 2014). These lead to high chlorophyll levels (Hu et al, 2014), excessive growth of seaweeds, seagrasses and nuisance algae, onset of toxic algal blooms (Schmidt et al, 2012;Steffen et al, 2014) and occurrences of anoxia and hypoxia (Carvalho-Aguiar et al, 2011), showing that eutrophication is a significant problem worldwide (Rulkey & Rusch, 2004;Lenhart et al, 2010;Nyenje et al, 2010).…”

Section: Introductionmentioning

confidence: 99%

Nitrogen and phosphorus in the subtropical Presidio River, northwestern Mexico

Sarmiento-Sánchez¹,

Voltolina²,

Velázquez-Dimas³

et al. 2017

lajar

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ABSTRACT. The aim of this study was to assess its nitrogen and phosphorus concentrations in the Presidio River, because it receives large volumes of wastewater with high loads of detergents and fertilizers. The mean concentrations of total nitrogen and phosphorus determined between . However, according to international standards on phosphorous concentrations in continental water bodies, the Presidio River may be considered hypereutrophic.

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“…Storm water runoff from agricultural fields is a concern due to its energy to transport pollutants such as sediments, nutrients, pesticides, herbicides, and hormones (Mbonimpa et al, 2014;Mudgal et al, 2010;Pedersen et al, 2005;Yang et al, 2012). The runoff is influenced by a combination of various land management practices including tillage, cropping systems, irrigation, drainage, timing of management (planting and harvesting), tools and machinery used, and integration of livestock.…”

Section: Introductionmentioning

confidence: 99%