Effects of antecedent rain history on particulate phosphorus loss from a small forested watershed of Japanese cypress (Chamaecyparis obtusa)

Ide, Jun’ichiro; Haga, Hirokazu; Chiwa, Masaaki; Otsuki, Kyoichi

doi:10.1016/j.jhydrol.2008.01.012

Cited by 38 publications

(42 citation statements)

References 51 publications

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“…Conversely, anticlockwise loops are produced when highest nutrient concentrations are observed on the falling limb of the storm hydrograph, indicating a slower delivery to the river monitoring point. This approach has yielded valuable information on potential nutrient source inputs to the river, based on how fast the nutrients are delivered in response to rainfall, and whether sources are adjacent to or distant from the monitoring site (Bowes et al, 2005a;Bowes et al, 2009b;Ide et al, 2008;Stutter et al, 2008).…”

Section: Introductionmentioning

confidence: 99%

Characterising phosphorus and nitrate inputs to a rural river using high-frequency concentration–flow relationships

Bowes

Jarvie

Halliday

et al. 2015

Science of The Total Environment

202

143

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Characterising phosphorus and nitrate inputs to a rural river using highfrequency concentration-flow relationships.Contact CEH NORA team at noraceh@ceh.ac.ukThe NERC and CEH trademarks and logos ('the Trademarks') are registered trademarks of NERC in the UK and other countries, and may not be used without the prior written consent of the Trademark owner. AbstractThe total reactive phosphorus (TRP) and nitrate concentrations of the River Enborne, southern England, were monitored at hourly interval between January 2010 and December 2011. The relationships between these high-frequency nutrient concentration signals and flow were used to infer changes in nutrient source and dynamics through the annual cycle and each individual storm event, by studying hysteresis patterns. TRP concentrations exhibited strong dilution patterns with increasing flow, and predominantly clockwise hysteresis through storm events. Despite the Enborne catchment being relatively rural for southern England, TRP inputs were dominated by constant, non-rain-related inputs from sewage treatment works (STW) for the majority of the year, producing the highest phosphorus concentrations through the spring-summer growing season. At higher river flows, the majority of the TRP load was derived from within-channel remobilisation of phosphorus from the bed sediment, much of which was also derived from STW inputs. Therefore, future phosphorus 2 mitigation measures should focus on STW improvements. Agricultural diffuse TRP inputs were only evident during storms in the May of each year, probably relating to manure application to land. The nitrate concentration-flow relationship produced a series of dilution curves, indicating major inputs from groundwater and to a lesser extent STW. Significant diffuse agricultural inputs with anticlockwise hysteresis trajectories were observed during the first major storms of the winter period.The simultaneous investigation of high-frequency time series data, concentration-flow relationships and hysteresis behaviour through multiple storms for both phosphorus and nitrate offers a simple and innovative approach for providing new insights into nutrient sources and dynamics.

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Section: Introductionmentioning

confidence: 99%

Characterising phosphorus and nitrate inputs to a rural river using high-frequency concentration–flow relationships

Bowes

Jarvie

Halliday

et al. 2015

Science of The Total Environment

202

143

View full text Add to dashboard Cite

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“…These trends are indicative of the flushing effect. The dominance of clockwise hysteresis loops in previous studies has been interpreted as suggesting that a rainfall produced a sufficient discharge to mobilize nearby sources of material along the channel and on nearby fields (Ide et al 2008). These sources were postulated as being exhausted on the rising limb, resulting in lower concentrations of OM and P on the falling one.…”

Section: Temporal Variation Of Om P and Dischargementioning

confidence: 96%

“…a hysteresis loop (Williams 1975;Ide et al 2008). In a majority of runoff events, their peak sediment concentration generally preceded or occurred simultaneously with their peak runoff rates.…”

Section: Temporal Variation Of Om P and Dischargementioning

confidence: 99%

“…Accordingly, suspended sediment moving in watershed provides a pathway for the transport of the sediment-associated contaminants (Schoellhamer et al 2007;Raeisi et al 2010;Fazli & Noor 2013). Eutrophication, low oxygen levels, and high nutrient and organic matter (OM) concentrations in reservoirs, canals, and other water bodies are common water pollution features (Ide et al 2008).…”

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confidence: 99%

“…The most P and OM losses from watersheds are exported during rainfall events resulting in rapid temporal variations in their loads. This makes it difficult to accurately estimate the P and OM loads because of the need for intensive water sampling during periods of highly fluctuating discharge (Hatch et al 1999;Ide et al 2008;Noor et al 2010).…”

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confidence: 99%

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Evaluation of the relationships between runoff-rainfall-sediment related nutrient loss (A case study: Kojour Watershed, Iran)

2013

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Noor H., Fazli S., Alibakhshi S.M. (2013) Suspended sediment (SS) resulted from distributed soil erosions facilitates soil organic matter and phosphorus (P) transportation and influences soil depletion and water quality. Organic matter (OM) in soil is the most important indicator of soil quality and productivity. P is one of the major nutrients controlling eutrophication of surface water. Irregular contaminant load pulsed by heavy rainfall may damage the ecological quality of downstream waters. Evaluation of OM and P, depleted by erosion processes in watershed scale, is necessary for better understanding the watershed system and should lead to appropriate management approaches. On the other hand, different behaviours of soil erosion as well as the necessity of regional studies have been proved. The present study was conducted in the Kojour watershed, Iran in order to (1) get some ideas about the storm-wise OM and P load in river, (2) evaluate the relationship between the peak of OM and P concentration and discharge during individual rainfall events, and (3) assess the applicability of rainfall and runoff variables of ten storm events in the prediction of storm-wise OM and P loss. The results showed that most of the OM and P peaks preceded the peak discharge, following a clockwise hysteretic loop that exhibited hysteresis with a greater OM and P concentration for a given discharge occurring on the rising limb rather than on the falling limb. The results also showed that regression models had good efficiency in estimation of storm-wise OM and P loss with coefficient of determination of 0.96 and 0.93, respectively.

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Assessing the role of forests in mitigating eutrophication downstream of pasture during spring snowmelt

et al. 2014

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Abstract:Little research has examined whether forests reduce stream water eutrophication in agricultural areas during spring snowmelt periods. This study evaluated the role of forests in ameliorating deteriorated stream water quality in agricultural areas, including pasture, during snowmelt periods. Temporal variation in stream water quality at a mixed land-use basin (565 ha: pasture 13%, forestry 87%), northern Japan, was monitored for 7 years. Synoptic stream water sampling was also conducted at 16 sites across a wide range of forest and agricultural areas in a basin (18.3 km 2 ) in spring, summer and fall. Atmospheric nitrogen (N) and phosphorus (P) deposition were measured for 4 years. The results showed that concentration pulses of nitrate, organic N and total P in stream water were observed when discharge increased during spring snowmelt. Their concentrations were high when silicate concentrations were low, suggesting surface water exported from pasture largely contributed to stream water pollution during snowmelt. Atmospheric N and P deposition (4.1 kg N ha À1 y À1 ; 0.09 kg P ha À1 y À1, respectively) was too low to affect the background concentrations of N and P in streams from forested areas. Reduction of eutrophication caused by nutrients from pasture was mainly due to dilution by water containing low concentrations of N and P exported from forested areas, whereas instream reduction was not a dominant process. Results indicate that forests have a limited capacity to reduce the concentration pulses of N and P in stream water during snowmelt in this study basin.

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Effects of antecedent rain history on particulate phosphorus loss from a small forested watershed of Japanese cypress (Chamaecyparis obtusa)

Cited by 38 publications

References 51 publications

Characterising phosphorus and nitrate inputs to a rural river using high-frequency concentration–flow relationships

Characterising phosphorus and nitrate inputs to a rural river using high-frequency concentration–flow relationships

Evaluation of the relationships between runoff-rainfall-sediment related nutrient loss (A case study: Kojour Watershed, Iran)

Assessing the role of forests in mitigating eutrophication downstream of pasture during spring snowmelt

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