Relevant bibliographies by topics / Forested catchment

Academic literature on the topic 'Forested catchment'

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Published: 4 June 2021
Last updated: 31 January 2023

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Journal articles on the topic "Forested catchment"

1

Hudson, J. A., S. B. Crane, and J. R. Blackie. "The Plynlimon water balance 1969-1995: the impact of forest and moorland vegetation on evaporation and streamflow in upland catchments." Hydrology and Earth System Sciences 1, no. 3 (September 30, 1997): 409–27. http://dx.doi.org/10.5194/hess-1-409-1997.

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Abstract. The Plynlimon experiment in mid-Wales, designed to determine the extent to which coniferous plantation increases evaporation losses and reduces streamflow relative to upland grassland, has now been yielding data since 1969 from the grassland Wye and the 67% forested Severn catchments. Water balance analyses of the early data indicated significantly higher evaporation rates from the forested catchment and studies of the hydrological processes involved attributed this to the high loss rates of precipitation intercepted by the forest canopy. Models based on these process studies predicted losses from the forested catchment that were similar but marginally higher than those determined by the catchment water balance. As the data sets from the catchments increased in length and a detailed reassessment of the ratings of the streamflow gauging structures was completed the updated water balances continued to show a significantly greater evaporation loss from the forested catchment, but the gap between the forest water balance and the model predictions widened. Furthermore Hudson and Gilman (1993), using the best data sets then available, identified downward trends in the evaporation from both catchments which the models did not reproduce and for which no obvious physical or physiological explanation was forthcoming. This dictated a major reassessment of the longer data sets, using the more powerful data processing techniques now available, to identify and eliminate any errors and inconsistencies. This paper describes the reassessment of the precipitation data and the estimates of potential evaporation and presents the water balance results emerging from the revised data sets. The revised results indicate that the evaporation losses from the grassland Wye catchment remained broadly similar to the potential evaporation estimates throughout the 1969-1995 period. The losses from the forested area of the Severn catchment declined from a level some 61% above that of the grassland in 1972 to a level only 18% higher before the start of felling in 1985. This downward trend continued as the felling and re-planting progressed. Over the period since 1990 the forest catchment losses appear to have stabilised at some 5-10% below those of the grassland catchment. Using the revised precipitation and potential evaporation data, process based models over-predict the forest catchment evaporation throughout the period and do not mirror the re-felling decline. Possible reasons for this apparent decline in evaporation rates are discussed.
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Bari, M., and K. R. J. Smettem. "Modelling monthly runoff generation processes following land use changes: groundwater–surface runoff interactions." Hydrology and Earth System Sciences 8, no. 5 (October 31, 2004): 903–22. http://dx.doi.org/10.5194/hess-8-903-2004.

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Abstract. A conceptual water balance model is presented to represent changes in monthly water balance following land use changes. Monthly rainfall–runoff, groundwater and soil moisture data from four experimental catchments in Western Australia have been analysed. Two of these catchments, "Ernies" (control, fully forested) and "Lemon" (54% cleared) are in a zone of mean annual rainfall of 725 mm, while "Salmon" (control, fully forested) and "Wights" (100% cleared) are in a zone with mean annual rainfall of 1125 mm. At the Salmon forested control catchment, streamflow comprises surface runoff, base flow and interflow components. In the Wights catchment, cleared of native forest for pasture development, all three components increased, groundwater levels rose significantly and stream zone saturated area increased from 1% to 15% of the catchment area. It took seven years after clearing for the rainfall–runoff generation process to stabilise in 1984. At the Ernies forested control catchment, the permanent groundwater system is 20 m below the stream bed and so does not contribute to streamflow. Following partial clearing of forest in the Lemon catchment, groundwater rose steadily and reached the stream bed by 1987. The streamflow increased in two phases: (i) immediately after clearing due to reduced evapotranspiration, and (ii) through an increase in the groundwater-induced stream zone saturated area after 1987. After analysing all the data available, a conceptual monthly model was created, comprising four inter-connecting stores: (i) an upper zone unsaturated store, (ii) a transient stream zone store, (ii) a lower zone unsaturated store and (iv) a saturated groundwater store. Data such as rooting depth, Leaf Area Index, soil porosity, profile thickness, depth to groundwater, stream length and surface slope were incorporated into the model as a priori defined attributes. The catchment average values for different stores were determined through matching observed and predicted monthly hydrographs. The observed and predicted monthly runoff for all catchments matched well with coefficients of determination (R2) ranging from 0.68 to 0.87. Predictions were relatively poor for: (i) the Ernies catchment (lowest rainfall, forested), and (ii) months with very high flows. Overall, the predicted mean annual streamflow was within ±8% of the observed values. Keywords: monthly streamflow, land use change, conceptual model, data-based approach, groundwater
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Yu, Mengran, Thomas Bishop, and Floris Van Ogtrop. "Assessment of the Decadal Impact of Wildfire on Water Quality in Forested Catchments." Water 11, no. 3 (March 14, 2019): 533. http://dx.doi.org/10.3390/w11030533.

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Wildfire can have significant impacts on hydrological processes in forested catchments, and a key area of concern is the impact upon water quality, particularly in catchments that supply drinking water. Wildfire effects runoff, erosion, and increases the influx of other pollutants into catchment waterways. Research suggests that suspended sediment and nutrient levels increase following wildfire. However, past studies on catchment water quality change have generally focused on the short term (1–3 years) effects of wildfire. For appropriate catchment management, it is important to know the long-term effect of wildfire on catchment water quality and the recovery process. In this study, a statistical analysis was performed to examine the effect of 2001/2002 Sydney wildfire on catchment water quality. This research is particularly important, since the catchments studied provide drinking water to Sydney. Linear mixed models were used in this study in an analysis of covariance (ANCOVA)-type change detection approach to assess the effect of wildfire. We used both burnt and unburnt catchments to aid the interpretation of the results and to help disentangle the effects of natural climate variation, as well as of the wildfire. The results of this study showed persistent long-term (10-year) effects of wildfire, including increases in total suspended sediment concentrations (64% higher than in unburnt catchments), total nitrogen concentrations (48% higher), and total phosphorus (40% higher).
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Lischeid, G., and J. Langusch. "Comparative simulation of the nitrogen dynamics using the INCA model and a neural network analysis: implications for improved nitrogen modelling." Hydrology and Earth System Sciences 8, no. 4 (August 31, 2004): 742–50. http://dx.doi.org/10.5194/hess-8-742-2004.

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Abstract. Continuing deposition of nitrogen in forested catchments affects stream and groundwater quality. However, the dependence of nitrogen dynamics on climatic and hydrological boundary conditions is still poorly understood. These dynamics have been investigated by applying the process-oriented Integrated Nitrogen in CAtchments (INCA) model and an artificial neural network to the data set from the forested Steinkreuz catchment in South Germany. The data comprise daily values of precipitation, air temperature and discharge of the catchment runoff. The INCA model simulated the mean nitrate concentration in the stream as well as seasonal fluctuations but it underestimated the short-term variance of the observed stream water nitrate concentration, especially the pronounced concentration peaks in late summer. In contrast, the artificial neural network matched the short-term dynamics using non-linear regressions with stream discharge and air temperature data. The results provide strong evidence that the short-term dynamics of stream nitrate concentration during storm-flow were generated in the riparian zone, which is less than 1% of the catchment area, and is not considered explicitly in the INCA model. The concentration peaks have little effect on the catchment’s nitrogen budget and the shallow groundwater data suggest that the short-term hydrological dynamics also govern groundwater recharge in the upland parts of the catchment. This substantial underestimate by the INCA model parameterisation is balanced by a corresponding underestimate of denitrification in clayey layers of the deeper aquifer. A better understanding of these processes is necessary to improve long-term risk assessments. Keywords: catchment, runoff, nitrogen, INCA, artificial neural network, flushing
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Tiwari, J., C. M. Thornton, and B. Yu. "The Brigalow Catchment Study: VI.† Evaluation of the RUSLE and MUSLE models to assess the impact of clearing brigalow (Acacia harpophylla) on sediment yield." Soil Research 59, no. 8 (2021): 778. http://dx.doi.org/10.1071/sr21030.

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Land clearing for cropping and grazing has increased runoff and sediment yield in Central Queensland. The Brigalow Catchment Study (BCS), was established to determine the effect of land clearing on water balance, soils, and productivity, and consisted of three catchments: brigalow forest, cropping, and grazing. Factors responsible for changes in and models for predicting sediment yield have not been assessed. Objectives of this study are to identify climatic, hydrological, and ground cover factors responsible for the increased sediment yield and to assess suitable models for sediment yield prediction. Runoff and sediment yield data from 1988 to 2018 were used to assess the Revised Universal Soil Loss Equation (RUSLE) and the Modified USLE (MUSLE) to predict the sediment yield in brigalow catchments. Common events among the three catchments and events for all catchment pairs were assessed. The sediment yield was approximately 44% higher for cropping and 4% higher for grazing than that from the forested catchment. The runoff amount (Q) and peak runoff rate (Qp) were major variables that could explain most of the increased sediment yield over time. A comparison for each catchment pair showed that sediment yield was 801kgha−1 or 37% higher for cropping and 28kgha−1 or 2% higher for grazing than for the forested catchment. Regression analysis for three different treatments (seven common events) and for different storm events (15 for forested, 40 for cropping, and 20 for grazing) showed that Q and Qpwere best correlated with sediment yield in comparison with variations in ground cover. The high coefficient of determination (R2>0.60) provided support for using the MUSLE model, based on both Q and Qp, instead of the RUSLE, and Q and Qp were the most important factors for improving sediment yield predictions from BCS catchments.
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Żelazny, Mirosław, Amanda Kosmowska, Tomasz Stańczyk, and Maria Mickiewicz. "Effect of deforestation on water chemistry in the Kościeliska Valley in the Western Tatras in southern Poland." Annals of Warsaw University of Life Sciences – SGGW. Land Reclamation 49, no. 3 (September 1, 2017): 223–35. http://dx.doi.org/10.1515/sggw-2017-0018.

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Abstract Effect of deforestation on water chemistry in the Kościeliska Valley in the Western Tatras in southern Poland. Bark beetle infestation is a leading source of local tree stand damage in Tatra National Park. In addition, hurricane-force winds also cause damage to tree stands, as in the case of the 2013 wind event in the Kopki Kościeliskie area of the Kościeliska Valley. The purpose of the study was to determine the effect of deforestation on seasonal changes in water chemistry, especially in the case of nitrate. The research was performed in the years 2015 and 2016 in seven catchments. The total number of monthly water samples was 175. Three forested catchments were selected along with two catchments deforested by high winds, one catchment deforested due to the action of the bark beetle, and one catchment affected by several different forms of deforestation. The following four types of measurements were performed in the field: pH, electrolytic conductance (EC25°C), total mineralization (Mt). The following analyses were performed in the laboratory using DIONEX 2000 ion chromatography equipment – concentration of 14 ions in water samples: Ca2+, Mg2+, Na+, K+, NH4+, Li+, HCO3−, SO42−, Cl−, NO2−, NO3−, PO43−, Br−, F−. The concentration of NO3− was many times higher in samples collected in deforested areas (x̅ = 16.53 mg·L−1) versus forested areas (x̅ = 3.06 mg·L−1). The share of NO3− in overall water chemistry in catchments deforested by high wind events is more than three times higher (3.25% mval·L−1) than in forested catchments (1.07% mval·L−1), and almost twice as high as that for a catchment affected by the bark beetle (1.8% mval·L−1). In fact, it is high enough that the position of the nitrate ion in the sequence of anions in the deforested catchment shifts from HCO3 > SO4 > NO3 > Cl (natural sequence occurring in forested carbonate-type catchments) to HCO3 > NO3 > SO4 > Cl. In addition, the concentration of nitrate in stream water was found to be lower during the vegetation season, which is associated with the nitrogen intake of plant root systems in the summer season.
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Yillia, P. T., and N. Kreuzinger. "Net flux of pollutants at a reduced spatial scale - an index of catchment vulnerability." Water Science and Technology 59, no. 1 (January 1, 2009): 109–16. http://dx.doi.org/10.2166/wst.2009.568.

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Emissions and riverine loads of pollutants were estimated for five sub-catchments in the Njoro River Catchment, Kenya to isolate specific areas for interim pollution management. The most vulnerable sub-catchments were the densely settled and heavily farmed areas around Egerton University and Njoro Township with the restricted area between them demonstrating a remarkable potential to retain/remove most of the pollution emitted in the Egerton University area. The least vulnerable sub-catchment was the predominantly forested Upper Njoro River Catchment whereas the recently settled and increasingly farmed Lower Little Shuru was moderately vulnerability. The method provided a scientific framework for the rapid assessment of catchment vulnerability to prioritize areas for remediation.
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Nakagawa, Fumiko, Urumu Tsunogai, Yusuke Obata, Kenta Ando, Naoyuki Yamashita, Tatsuyoshi Saito, Shigeki Uchiyama, Masayuki Morohashi, and Hiroyuki Sase. "Export flux of unprocessed atmospheric nitrate from temperate forested catchments: a possible new index for nitrogen saturation." Biogeosciences 15, no. 22 (November 22, 2018): 7025–42. http://dx.doi.org/10.5194/bg-15-7025-2018.

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Abstract. To clarify the biological processing of nitrate within temperate forested catchments using unprocessed atmospheric nitrate exported from each catchment as a tracer, we continuously monitored stream nitrate concentrations and stable isotopic compositions, including 17O excess (Δ17O), in three forested catchments in Japan (KJ, IJ1, and IJ2) for more than 2 years. The catchments showed varying flux-weighted average nitrate concentrations of 58.4, 24.4, and 17.1 µmol L−1 in KJ, IJ1, and IJ2, respectively, which correspond to varying export fluxes of nitrate: 76.4, 50.1, and 35.1 mmol m−2 in KJ, IJ1, and IJ2, respectively. In addition to stream nitrate, nitrate concentrations and stable isotopic compositions in soil water were determined for comparison in the most nitrate-enriched catchment (site KJ). While the 17O excess of nitrate in soil water showed significant seasonal variation, ranging from +0.1 ‰ to +5.7 ‰ in KJ, stream nitrate showed small variation, from +0.8 ‰ to +2.0 ‰ in KJ, +0.7 ‰ to +2.8 ‰ in IJ1, and +0.4 ‰ to +2.2 ‰ in IJ2. We conclude that the major source of stream nitrate in each forested catchment is groundwater nitrate. Additionally, the significant seasonal variation found in soil nitrate is buffered by the groundwater nitrate. The estimated annual export flux of unprocessed atmospheric nitrate accounted for 9.4 %±2.6 %, 6.5 %±1.8 %, and 2.6 %±0.6 % of the annual deposition flux of atmospheric nitrate in KJ, IJ1, and IJ2, respectively. The export flux of unprocessed atmospheric nitrate relative to the deposition flux showed a clear normal correlation with the flux-weighted average concentration of stream nitrate, indicating that reductions in the biological assimilation rates of nitrate in forested soils, rather than increased nitrification rates, are likely responsible for the elevated stream nitrate concentration, probably as a result of nitrogen saturation. The export flux of unprocessed atmospheric nitrate relative to the deposition flux in each forest ecosystem is applicable as an index for nitrogen saturation.
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Baba, Mitsuhisa, and Masanori Okazaki. "Acidification in nitrogen-saturated forested catchment." Soil Science and Plant Nutrition 44, no. 4 (December 1998): 513–25. http://dx.doi.org/10.1080/00380768.1998.10414475.

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Langusch, J. J., and E. Matzner. "N fluxes in two nitrogen saturated forested catchments in Germany: dynamics and modelling with INCA." Hydrology and Earth System Sciences 6, no. 3 (June 30, 2002): 383–94. http://dx.doi.org/10.5194/hess-6-383-2002.

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Abstract. The N cycle in forests of the temperate zone in Europe has been changed substantially by the impact of atmospheric N deposition. Here, the fluxes and concentrations of mineral N in throughfall, soil solution and runoff in two German catchments, receiving high N inputs are investigated to test the applicability of an Integrated Nitrogen Model for European Catchments (INCA) to small forested catchments. The Lehstenbach catchment (419 ha) is located in the German Fichtelgebirge (NO Bavaria, 690-871 m asl.) and is stocked with Norway spruce (Picea abies (L.) Karst.) of different ages. The Steinkreuz catchment (55 ha) with European beech (Fagus sylvatica L.) as the dominant tree species is located in the Steigerwald (NW Bavaria, 400-460 m asl.). The mean annual N fluxes with throughfall were slightly higher at the Lehstenbach (24.6 kg N ha-1) than at the Steinkreuz (20.4 kg N ha-1). In both catchments the N fluxes in the soil are dominated by NO3. At Lehstenbach, the N output with seepage at 90 cm soil depth was similar to the N flux with throughfall. At Steinkreuz more than 50 % of the N deposited was retained in the upper soil horizons. In both catchments, the NO3 fluxes with runoff were lower than those with seepage. The average annual NO3 concentrations in runoff in both catchments were between 0.7 to 1.4 mg NO3-N L-1 and no temporal trend was observed. The N budgets at the catchment scale indicated similar amounts of N retention (Lehstenbach: 19 kg N ha-1yr-1 ; Steinkreuz: 17 kg N ha-1yr-1). The parameter settings of the INCA model were simplified to reduce the model complexity. In both catchments, the NO3 concentrations and fluxes in runoff were matched well by the model. The seasonal patterns with lower NO3 runoff concentrations in summer at the Lehstenbach catchment were replicated. INCA underestimated the increased N3 concentrations during short periods of rewetting in late autumn at the Steinkreuz catchment. The model will be a helpful tool for the calculation of "critical loads" for the N deposition in Central European forests including different hydrological regimes. Keywords: forest ecosystem, modelling, N budgets, N saturation, NO3 leaching, water quality, INCA
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Dissertations / Theses on the topic "Forested catchment"

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Osaka, Ken'ichi. "Hydro-biogeochemical study on denitrification in a temperate forested catchment." Kyoto University, 2007. http://hdl.handle.net/2433/136560.

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Kyoto University (京都大学)
0048
新制・課程博士
博士(農学)
甲第13306号
農博第1648号
新制||農||946(附属図書館)
学位論文||H19||N4285(農学部図書室)
UT51-2007-H671
京都大学大学院農学研究科地域環境科学専攻
(主査)教授 谷 誠, 教授 武田 博清, 教授 小﨑 隆
学位規則第4条第1項該当
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James, April Lynda. "Investigating small multiple catchment runoff generation in a forested temperate watershed." Thesis, McGill University, 2005. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=100630.

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Runoff generation refers to the physical processes by which water travels through the landscape, moving through the subsurface or over the ground surface, ultimately arriving at the stream channel. These physical processes vary in both space and time leading to difficulties in mechanistic modelling of storm response, contaminant transport and nutrient fluxes. Runoff generation has been extensively studied at the hillslope scale and in headwater catchments. However, only recently have empirical studies begun to collect similarly detailed datasets across multiple catchments with which to examine how these processes change with scale. This study examines runoff generation from a series of eight small nested forest catchments and focuses specifically on the controlling influences of antecedent moisture conditions and catchment topography.
End-member-mixing-analysis using stream water hydrochemistry from the eight catchments shows changing seasonal and storm-based source water contributions to the stream channel. Analysis identifies hydrochemical solutes with behaviour consistent with the assumptions of the mixing-model approach for all eight catchments. Results indicate that testing of solute selection is critical in the application of this method to multiple catchments.
Runoff generation observed for five storm events shows a strong nonlinear relationship between runoff and antecedent moisture conditions, supporting the hypothesis of varying 'states of wetness'. Detailed hillslope-scale investigation during the different 'states of wetness' indicates that while groundwater and soil moisture profiles show changing active-flow connectivity on a seasonal and storm-base dtime scale, there no significant change in spatial patterns of shallow soil moisture. These results suggest that a priori spatial patterns in shallow soil moisture in forested terrains may not be a good predictor of critical hydrologic connectivity that leads to the threshold change in runoff generation, as has been found in rangeland catchments.
Differences in storm response from the eight catchments are in part attributable to variation in topography and landscape organization. The multiple catchments have similar distributions of topographic index and yet differences in mean values of topographic index lead to significantly different estimates of mean residence time. Scaling of storm response is dominated by the behaviour of the three largest catchments. These three catchments distinguish themselves with larger MRT and larger valley bottom areas. It is these three catchments that, under dry antecedent moisture conditions, show significantly larger amounts of new water delivery to the stream channel, suggesting a significant change in dominant runoff mechanisms related to topography and landscape organization.
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Dalva, Moshe. "Pathways, patterns and dynamics of dissolved organic carbon in a temperate forested swamp catchment." Thesis, McGill University, 1990. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=59625.

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Inputs of DOC in precipitation were low and increased with the passage of rainfall through different canopies. Throughfall, stemflow, leachates from A horizons and litterfall were identified as sources of DOC, while B and C horizons in upland areas provide a sink. Throughfall and stemflow displayed high temporal variability in DOC concentrations, while soil leachates and peat waters exhibited strong seasonal patterns. DOC concentrations in throughfall, stemflow and A horizons were highest in the predominantly coniferous site. In the fall, DOC concentrations from A horizons in the deciduous site were significantly higher than those from the coniferous site.
Factors influencing DOC in peat waters are: (1) peat thermal regime, (2) water chemistry, and (3) water table position. Large storms ($>$30 mm precipitation) appear to be the primary factor influencing exports of DOC in streamflow, particularly following dry antecedant soil moisture conditions. Slow rates of water movement through compact deep peats ($>$60 cm depth) and adsorption of DOC in B and C horizons of this catchment obstruct exports of DOC, which over the 5.5 month study period, were minimal in comparison to inputs.
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Scaini, Anna. "Velocity and celerity in a forested headwater catchment : a combined experimental and modelling approach." Thesis, Lancaster University, 2017. http://eprints.lancs.ac.uk/89756/.

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One of the most important issues in modern hydrology is to improve our understanding of the release of old water during rainfall events. This thesis approaches the problem of estimating velocities, a measure of water transport, and celerities, a measure of the hydrograph response. We aim at measuring and interpreting estimates of velocity and celerity in a consistent way using in situ data. For this purpose, we performed multi-tracer irrigation experiments at different scales, from soil column to hillslope, to a sub-catchment scale analysis in a forested headwater catchment characterised by fractured bedrock. Our field experiments proved the importance of bedrock cleavage orientation in controlling subsurface flow direction and demonstrated the importance of quantifying the extent of fractures as well as their orientation relative to dominant topographically related flowpaths. An undisturbed soil column experiment was used in a hypothesis-testing framework in combination with a Multiple Interacting Pathways (MIPs) model. The use of a transition probability matrix (TPM) in combination with immobile water and variable field capacity parameters allowed the representation both volume and tracer dynamics. A framework to estimate both velocities and celerities using commonlyavailable hydrometric and tracer data is presented, emphasising the importance of choosing appropriate distance information as it can strongly influence the estimates and thereby the interpretation of controls on catchment function. The analysis of velocities and celerities at different spatial and temporal scales showed that the relationship between velocity and celerity shows a positive relation at the stream outlet. The experimentally-derived velocities and celerities metrics hereby explored have the potential to contribute to the evaluation hypothesis regarding catchment storage and release of water, by providing a direct comparison of what controls the old-water paradox.
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Julich, Stefan, Raphael Benning, Dorit Julich, and Karl-Heinz Feger. "Quantification of Phosphorus Exports from a Small Forested Headwater-Catchment in the Eastern Ore Mountains, Germany." Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2017. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-230637.

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Phosphorus (P) export from forest soils is mainly driven by storm events, which induce rapid flow processes by preferential flow bypassing large parts of the soil matrix. However, little is known about the dynamics, magnitude, and driving processes of P exports into surface waters. In this paper, we present the results of a monitoring study in a small forested catchment (21 ha) situated in the low mountain ranges of Saxony, Germany. During the fixed schedule-sampling (weekly to bi-weekly sampling frequency for a three-year period), a mean total-P concentration of 8 μg·L−1 was measured. However, concentrations increased up to 203 μg·L−1 during individual storm flow events. Based on the analyzed concentrations and continuously measured discharge we calculated mean annual export rates of 19 to 44 g·ha−1·a−1 for the weekly sampling frequency with different load calculation methods. If events are included into the annual load calculation, the mean annual export fluxes can be up to 83 g·ha−1·a−1 based on the different load calculation methods. Predictions of total-P export rates based on a sampling strategy which does not consider short-term changes due to factors such as storms will substantially underestimate P exports.
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Löhr, Stefan Carlos. "Controls on iron in soils and soil waters of a forested, coastal catchment in subtropical Australia." Thesis, Queensland University of Technology, 2010. https://eprints.qut.edu.au/47012/1/Stefan_L%C3%B6hr_Thesis.pdf.

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Soluble organic matter derived from exotic Pinus vegetation forms stronger complexes with iron (Fe) than the soluble organic matter derived from most native Australian species. This has lead to concern about the environmental impacts related to the establishment of extensive exotic Pinus plantations in coastal southeast Queensland, Australia. It has been suggested that the Pinus plantations may enhance the solubility of Fe in soils by increasing the amount of organically complexed Fe. While this remains inconclusive, the environmental impacts of an increased flux of dissolved, organically complexed Fe from soils to the fluvial system and then to sensitive coastal ecosystems are potentially damaging. Previous work investigated a small number of samples, was largely laboratory based and had limited application to field conditions. These assessments lacked field-based studies, including the comparison of the soil water chemistry of sites associated with Pinus vegetation and undisturbed native vegetation. In addition, the main controls on the distribution and mobilisation of Fe in soils of this subtropical coastal region have not been determined. This information is required in order to better understand the relative significance of any Pinus enhanced solubility of Fe. The main aim of this thesis is to determine the controls on Fe distribution and mobilisation in soils and soil waters of a representative coastal catchment in southeast Queensland (Poona Creek catchment, Fraser Coast) and to test the effect of Pinus vegetation on the solubility and speciation of Fe. The thesis is structured around three individual papers. The first paper identifies the main processes responsible for the distribution and mobilisation of labile Fe in the study area and takes a catchment scale approach. Physicochemical attributes of 120 soil samples distributed throughout the catchment are analysed, and a new multivariate data analysis approach (Kohonen’s self organising maps) is used to identify the conditions associated with high labile Fe. The second paper establishes whether Fe nodules play a major role as an iron source in the catchment, by determining the genetic mechanism responsible for their formation. The nodules are a major pool of Fe in much of the region and previous studies have implied that they may be involved in redox-controlled mobilisation and redistribution of Fe. This is achieved by combining a detailed study of a ferric soil profile (morphology, mineralogy and micromorphology) with the distribution of Fe nodules on a catchment scale. The third component of the thesis tests whether the concentration and speciation of Fe in soil solutions from Pinus plantations differs significantly from native vegetation soil solutions. Microlysimeters are employed to collect unaltered, in situ soil water samples. The redox speciation of Fe is determined spectrophotometrically and the interaction between Fe and dissolved organic matter (DOM) is modelled with the Stockholm Humic Model. The thesis provides a better understanding of the controls on the distribution, concentration and speciation of Fe in the soils and soil waters of southeast Queensland. Reductive dissolution is the main mechanism by which mobilisation of Fe occurs in the study area. Labile Fe concentrations are low overall, particularly in the sandy soils of the coastal plain. However, high labile Fe is common in seasonally waterlogged and clay-rich soils which are exposed to fluctuating redox conditions and in organic-rich soils adjacent to streams. Clay-rich soils are most common in the upper parts of the catchment. Fe nodules were shown to have a negligible role in the redistribution of dissolved iron in the catchment. They are formed by the erosion, colluvial transport and chemical weathering of iron-rich sandstones. The ferric horizons, in which nodules are commonly concentrated, subsequently form through differential biological mixing of the soil. Whereas dissolution/ reprecipitation of the Fe cements is an important component of nodule formation, mobilised Fe reprecipitates locally. Dissolved Fe in the soil waters is almost entirely in the ferrous form. Vegetation type does not affect the concentration and speciation of Fe in soil waters, although Pinus DOM has greater acidic functional group site densities than DOM from native vegetation. Iron concentrations are highest in the high DOM soil waters collected from sandy podosols, where they are controlled by redox potential. Iron concentrations are low in soil solutions from clay and iron oxide rich soils, in spite of similar redox potentials. This is related to stronger sorption to the reactive clay and iron oxide mineral surfaces in these soils, which reduces the amount of DOM available for microbial metabolisation and reductive dissolution of Fe. Modelling suggests that Pinus DOM can significantly increase the amount of truly dissolved ferric iron remaining in solution in oxidising conditions. Thus, inputs of ferrous iron together with Pinus DOM to surface waters may reduce precipitation of hydrous ferric oxides and increase the flux of dissolved iron out of the catchment. Such inputs are most likely from the lower catchment, where podosols planted with Pinus are most widely distributed. Significant outcomes other than the main aims were also achieved. It is shown that mobilisation of Fe in podosols can occur as dissolved Fe(II) rather than as Fe(III)-organic complexes. This has implications for the large body of work which assumes that Fe(II) plays a minor role. Also, the first paper demonstrates that a data analysis approach based on Kohonen’s self organising maps can facilitate the interpretation of complex datasets and can help identify geochemical processes operating on a catchment scale.
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Fang, Zhufeng [Verfasser]. "3D hydrological simulation of a forested headwater catchment: Spatio-temporal validation and scale dependent parameterization / Zhufeng Fang." Bonn : Universitäts- und Landesbibliothek Bonn, 2016. http://d-nb.info/1119888891/34.

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Dutton, Anona L. "Process-based simulations of near-surface hydrologic response for a forested upland catchment: the impact of a road /." May be available electronically:, 2000. http://proquest.umi.com/login?COPT=REJTPTU1MTUmSU5UPTAmVkVSPTI=&clientId=12498.

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Lin, Chaofeng. "Iron biogeochemistry and associated greenhouse gas evolution in a forested subtropical Australian coastal catchment : Poona Creek, Southeast Queensland." Thesis, Queensland University of Technology, 2010. https://eprints.qut.edu.au/47072/1/Chaofeng_Lin_Thesis.pdf.

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Iron (Fe) is the fourth most abundant element in the Earth’s crust. Excess Fe mobilization from terrestrial into aquatic systems is of concern for deterioration of water quality via biofouling and nuisance algal blooms in coastal and marine systems. Substantial Fe dissolution and transport involve alternate Fe(II) oxidation followed by Fe(III) reduction, with a diversity of Bacteria and Archaea acting as the key catalyst. Microbially-mediated Fe cycling is of global significance with regard to cycles of carbon (C), sulfur (S) and manganese (Mn). However, knowledge regarding microbial Fe cycling in circumneutral-pH habitats that prevail on Earth has been lacking until recently. In particular, little is known regarding microbial function in Fe cycling and associated Fe mobilization and greenhouse (CO2 and CH4, GHG) evolution in subtropical Australian coastal systems where microbial response to ambient variations such as seasonal flooding and land use changes is of concern. Using the plantation-forested Poona Creek catchment on the Fraser Coast of Southeast Queensland (SEQ), this research aimed to 1) study Fe cycling-associated bacterial populations in diverse terrestrial and aquatic habitats of a representative subtropical coastal circumneutral-pH (4–7) ecosystem; and 2) assess potential impacts of Pinus plantation forestry practices on microbially-mediated Fe mobilization, organic C mineralization and associated GHG evolution in coastal SEQ. A combination of wet-chemical extraction, undisturbed core microcosm, laboratory bacterial cultivation, microscopy and 16S rRNA-based molecular phylogenetic techniques were employed. The study area consisted primarily of loamy sands, with low organic C and dissolved nutrients. Total reactive Fe was abundant and evenly distributed within soil 0–30 cm profiles. Organic complexation primarily controlled Fe bioavailability and forms in well-drained plantation soils and water-logged, native riparian soils, whereas tidal flushing exerted a strong “seawater effect” in estuarine locations and formed a large proportion of inorganic Fe(III) complexes. There was a lack of Fe(II) sources across the catchment terrestrial system. Mature, first-rotation plantation clear-felling and second-rotation replanting significantly decreased organic matter and poorly crystalline Fe in well-drained soils, although variations in labile soil organic C fractions (dissolved organic C, DOC; and microbial biomass C, MBC) were minor. Both well-drained plantation soils and water-logged, native-vegetation soils were inhabited by a variety of cultivable, chemotrophic bacterial populations capable of C, Fe, S and Mn metabolism via lithotrophic or heterotrophic, (micro)aerobic or anaerobic pathways. Neutrophilic Fe(III)-reducing bacteria (FeRB) were most abundant, followed by aerobic, heterotrophic bacteria (heterotrophic plate count, HPC). Despite an abundance of FeRB, cultivable Fe(II)-oxidizing bacteria (FeOB) were absent in associated soils. A lack of links between cultivable Fe, S or Mn bacterial densities and relevant chemical measurements (except for HPC correlated with DOC) was likely due to complex biogeochemical interactions. Neither did variations in cultivable bacterial densities correlate with plantation forestry practices, despite total cultivable bacterial densities being significantly lower in estuarine soils when compared with well-drained plantation soils and water-logged, riparian native-vegetation soils. Given that bacterial Fe(III) reduction is the primary mechanism of Fe oxide dissolution in soils upon saturation, associated Fe mobilization involved several abiotic and biological processes. Abiotic oxidation of dissolved Fe(II) by Mn appeared to control Fe transport and inhibit Fe dissolution from mature, first-rotation plantation soils post-saturation. Such an effect was not observed in clear-felled and replanted soils associated with low SOM and potentially low Mn reactivity. Associated GHG evolution post-saturation mainly involved variable CO2 emissions, with low, but consistently increasing CH4 effluxes in mature, first-rotation plantation soil only. In comparison, water-logged soils in the riparian native-vegetation buffer zone functioned as an important GHG source, with high potentials for Fe mobilization and GHG, particularly CH4 emissions in riparian loam soils associated with high clay and crystalline Fe fractions. Active Fe–C cycling was unlikely to occur in lower-catchment estuarine soils associated with low cultivable bacterial densities and GHG effluxes. As a key component of bacterial Fe cycling, neutrophilic FeOB widely occurred in diverse aquatic, but not terrestrial, habitats of the catchment study area. Stalked and sheathed FeOB resembling Gallionella and Leptothrix were limited to microbial mat material deposited in surface fresh waters associated with a circumneutral-pH seep, and clay-rich soil within riparian buffer zones. Unicellular, Sideroxydans-related FeOB (96% sequence identity) were ubiquitous in surface and subsurface freshwater environments, with highest abundance in estuary-adjacent shallow coastal groundwater water associated with redox transition. The abundance of dissolved C and Fe in the groundwater-dependent system was associated with high numbers of cultivable anaerobic, heterotrophic FeRB, microaerophilic, putatively lithotrophic FeOB and aerobic, heterotrophic bacteria. This research represents the first study of microbial Fe cycling in diverse circumneutral-pH environments (terrestrial–aquatic, freshwater–estuarine, surface–subsurface) of a subtropical coastal ecosystem. It also represents the first study of its kind in the southern hemisphere. This work highlights the significance of bacterial Fe(III) reduction in terrestrial, and bacterial Fe(II) oxidation in aquatic catchment Fe cycling. Results indicate the risk of promotion of Fe mobilization due to plantation clear-felling and replanting, and GHG emissions associated with seasonal water-logging. Additional significant outcomes were also achieved. The first direct evidence for multiple biomineralization patterns of neutrophilic, microaerophilic, unicellular FeOB was presented. A putatively pure culture, which represents the first cultivable neutrophilic FeOB from the southern hemisphere, was obtained as representative FeOB ubiquitous in diverse catchment aquatic habitats.
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Sabetraftar, Karim, and Karim Sabetraftar@anu edu au. "The hydrological flux of organic carbon at the catchment scale: a case study in the Cotter River catchment, Australia." The Australian National University. Centre for Resource and Environmental Studies, 2005. http://thesis.anu.edu.au./public/adt-ANU20070502.141450.

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Existing terrestrial carbon accounting models have mainly investigated atmosphere-vegetationsoil stocks and fluxes but have largely ignored the hydrological flux of organic carbon. It is generally assumed that biomass and soil carbon are the only relevant pools in a landscape ecosystem. However, recent findings have suggested that significant amounts of organic carbon can dissolve (dissolved organic carbon or DOC) or particulate (particulate organic carbon or POC) in water and enter the hydrological flux at the catchment scale. A significant quantity of total organic carbon (TOC) sequestered through photosynthesis may be exported from the landscape through the hydrological flux and stored in downstream stocks.¶ This thesis presents a catchment-scale case study investigation into the export of organic carbon through a river system in comparison with carbon that is produced by vegetation through photosynthesis. The Cotter River Catchment was selected as the case study. It is a forested catchment that experienced a major wildfire event in January 2003. The approach is based on an integration of a number of models. The main input data were time series of in-stream carbon measurements and remotely sensed vegetation greenness. The application of models to investigate diffuse chemical substances has dramatically increased in the past few years because of the significant role of hydrology in controlling ecosystem exchange. The research firstly discusses the use of a hydrological simulation model (IHACRES) to analyse organic carbon samples from stream and tributaries in the Cotter River Catchment case study. The IHACRES rainfall-runoff model and a regionalization method are used to estimate stream-flow for the 75 sub-catchments. The simulated streamflow data were used to calculate organic carbon loads from concentrations sampled at five locations in the catchment.¶ The gross primary productivity (GPP) of the vegetation cover in the catchment was estimated using a radiation use efficiency (RUE) model driven by MODIS TERRA data on vegetation greenness and modeled surface irradiance (RS). The relationship between total organic carbon discharged in-stream and total carbon uptake by plants was assessed using a cross-correlation analysis.¶ The IHACRES rainfall-runoff model was successfully calibrated at three gauged sites and performed well. The results of the calibration procedure were used in the regionalization method that enabled streamflow to be estimated at ungauged locations including the seven sampling sites and the 75 sub-catchment areas. The IHACRES modelling approach was found appropriate for investigating a wide range of issues related to the hydrological export of organic carbon at the catchment scale. A weekly sampling program was implemented to provide estimates of TOC, DOC and POC concentrations in the Cotter River Catchment between July 2003 and June 2004. The organic carbon load was estimated using an averaging method.¶ The rate of photosynthesis by vegetation (GPP) was successfully estimated using the radiation use efficiency model to discern general patterns of vegetation productivity at sub-catchment scales. This analysis required detailed spatial resolution of the GPP across the entire catchment area (comprising 75 sub-catchment areas) in addition to the sampling locations. Important factors that varied at the catchment scale during the sampling period July 2003 – June 2004, particularly the wildfire impacts, were also considered in this assessment. ¶ The results of the hydrologic modelling approach and terrestrial GPP outcome were compared using cross correlation and regression analysis. This comparison revealed the likely proportion of catchment GPP that contributes to in-stream hydrological flux of organic carbon. TOC Load was 0.45% of GPP and 22.5 - 25% of litter layer. As a result of this investigation and giving due consideration to the uncertainties in the approach, it can be concluded that the hydrological flux of organic carbon in a forested catchment is a function of gross primary productivity.
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Books on the topic "Forested catchment"

1

Matzner, Egbert, ed. Biogeochemistry of Forested Catchments in a Changing Environment. Berlin, Heidelberg: Springer Berlin Heidelberg, 2004. http://dx.doi.org/10.1007/978-3-662-06073-5.

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Egbert, Matzner, and Bayreuther Institut für Terrestrische Ökosystemforschung., eds. Biogeochemistry of forested catchments in a changing environment: A German case study. Berlin: Springer, 2004.

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Hydrological processes contributing to nitrogen leaching from forested catchments in Nordic conditions. Helsinki: Finnish Environment Institute, 1996.

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Dillon, Peter James. Prediction of annual nitrogen and phosphorus export from forested stream catchments in central Ontario. [Toronto, Ont: Ont. Ministry of the Environment, 1990.

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Benyon, R. G. The effects of strip thinning on forest growth in the Ettercon catchments. Melbourne, Austrlaia: Melbourne Water, 1992.

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Howell, Kim. Selected, annotated bibliography on biodiversity of catchment forest reserves in Arusha, Iringa, Kilimanjaro, Morogoro, and Tanga regions, Tanzania. Dar es Salaam: The Project, Forestry and Beekeeping Division, Ministry of Tourism, Natural Resources and Environment, 1994.

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Gell, Peter A. Human settlement history and environmental impact: The Delegate River catchment, east Gippsland, Victoria. Melbourne: Dept. of Geography and Environmental Science, Monash University, 1989.

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Ritson, P. Changes in forest cover in response to forest thinning on Hansen, Higgens and Jones Catchments. East Perth, W.A: Water and Rivers Commission, 1997.

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Meeting, Australian Academy of Science Science and Industry Forum. Science in the management of forests and catchments: Report of the 48th Meeting of the National Science and Industry Forum. Canberra, ACT: Australian Academy of Science, 1991.

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Strawbridge, M. The extent, condition and management of remnant vegetation in water resource recovery catchments in south Western Australia: Report to the Natural Heritage Trust. East Perth, W.A: Water and Rivers Commission, 1999.

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Book chapters on the topic "Forested catchment"

1

Hauhs, M. "Lange Bramke: An Ecosystem Study of a Forested Catchment." In Acidic Precipitation, 275–305. New York, NY: Springer New York, 1989. http://dx.doi.org/10.1007/978-1-4612-3616-0_9.

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Scherbatskoy, Timothy, James B. Shanley, and Gerald J. Keeler. "Factors Controlling Mercury Transport in an Upland Forested Catchment." In Biogeochemical Investigations at Watershed, Landscape, and Regional Scales, 427–38. Dordrecht: Springer Netherlands, 1998. http://dx.doi.org/10.1007/978-94-017-0906-4_39.

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Kelly, Liam A. "Estimating sediment yield variation in a small forested upland catchment." In Sediment/Water Interactions, 199–203. Dordrecht: Springer Netherlands, 1992. http://dx.doi.org/10.1007/978-94-011-2783-7_17.

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Küsel, K., and C. Alewell. "Riparian Zones in a Forested Catchment: Hot Spots for Microbial Reductive Processes." In Ecological Studies, 377–95. Berlin, Heidelberg: Springer Berlin Heidelberg, 2004. http://dx.doi.org/10.1007/978-3-662-06073-5_22.

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NavrÁtil, Tomáš, Marek Vach, Petr Skřivan, Martin Mihaljevič, and Irena Dobešová. "Deposition and Fate of Lead in a Forested Catchment, Lesni Potok, Central Czech Republic." In Biogeochemical Investigations of Terrestrial, Freshwater, and Wetland Ecosystems across the Globe, 619–30. Dordrecht: Springer Netherlands, 2004. http://dx.doi.org/10.1007/978-94-007-0952-2_42.

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Hultberg, H., and M. Ferm. "Measurements of Atmospheric Deposition and Internal Circulation of Base Cations to a Forested Catchment Area." In Acid Reign ’95?, 2235–40. Dordrecht: Springer Netherlands, 1995. http://dx.doi.org/10.1007/978-94-007-0864-8_60.

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Munthe, John, and Hans Hultberg. "Mercury and Methylmercury in Runoff from a Forested Catchment — Concentrations, Fluxes, and Their Response to Manipulations." In Biogeochemical Investigations of Terrestrial, Freshwater, and Wetland Ecosystems across the Globe, 607–18. Dordrecht: Springer Netherlands, 2004. http://dx.doi.org/10.1007/978-94-007-0952-2_41.

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Lischeid, G., C. Alewell, J. Bittersohl, A. Göttlein, C. Jungnickel, H. Lange, B. Manderscheid, K. Moritz, B. Ostendorf, and H. Sager. "Investigating soil and groundwater quality at different scales in a forested catchment: the Waldstein case study." In Soil and Water Quality at Different Scales, 109–18. Dordrecht: Springer Netherlands, 1998. http://dx.doi.org/10.1007/978-94-017-3021-1_11.

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Ohte, Nobuhito, Masashi Murakami, Izuki Endo, Mizue Ohashi, Kohei Iseda, Takahiro Suzuki, Tomoki Oda, et al. "Ecosystem Monitoring of Radiocesium Redistribution Dynamics in a Forested Catchment in Fukushima After the Nuclear Power Plant Accident in March 2011." In Agricultural Implications of the Fukushima Nuclear Accident, 175–88. Tokyo: Springer Japan, 2016. http://dx.doi.org/10.1007/978-4-431-55828-6_14.

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Bren, Leon. "Flooding Forests." In Forest Hydrology and Catchment Management, 215–33. Dordrecht: Springer Netherlands, 2014. http://dx.doi.org/10.1007/978-94-017-9337-7_10.

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Conference papers on the topic "Forested catchment"

1

Benton, Joshua R., Madeline E. Schreiber, Kevin McGuire, Scott Bailey, Brian D. Strahm, Donald S. Ross, Amanda Pennino, Stephanie Duston, and Jennifer Bower. "DYNAMICS OF GROUNDWATER FLOW DIRECTION IN THE CRITICAL ZONE OF A FORESTED, GLACIATED CATCHMENT." In Joint 69th Annual Southeastern / 55th Annual Northeastern GSA Section Meeting - 2020. Geological Society of America, 2020. http://dx.doi.org/10.1130/abs/2020se-345040.

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Alina, Tirnovan. "FLASH FLOODS ON A FORESTED AND HEAVILY POPULATED CATCHMENT. CASE STUDY FOR SUHA BASIN (ROMANIA)." In 14th SGEM GeoConference on WATER RESOURCES. FOREST, MARINE AND OCEAN ECOSYSTEMS. Stef92 Technology, 2014. http://dx.doi.org/10.5593/sgem2014/b31/s12.040.

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Wilkes, Austin E., and Andrew Schroth. "AUTUMN STORMS TRIGGER ENHANCED EXPORT OF IRON, PHOSPHORUS, AND CARBON FROM A FORESTED VERMONT CATCHMENT." In 53rd Annual GSA Northeastern Section Meeting - 2018. Geological Society of America, 2018. http://dx.doi.org/10.1130/abs/2018ne-310746.

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Blaurock, Katharina, Stefan Peiffer, Luisa Hopp, Benjamin Gilfedder, Phil Garthen, and Jan Fleckenstein. "Elucidating sources of dissolved organic carbon in the riparian zone of a small, forested catchment." In Goldschmidt2021. France: European Association of Geochemistry, 2021. http://dx.doi.org/10.7185/gold2021.5946.

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Dudel, Ernst Gert, Carsten Brackhage, Claudia Clemens, Holger Dienemann, Martin Mkandawire, Joachim Rotsche, and Arndt Weiske. "Principles and Limitations for Natural Attenuation of Radionuclides in Former Uranium Mining and Milling Sites." In ASME 2001 8th International Conference on Radioactive Waste Management and Environmental Remediation. American Society of Mechanical Engineers, 2001. http://dx.doi.org/10.1115/icem2001-1260.

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Abstract Development of a self-sustainable remediation process seems to require an approach that uses the entire ecosystem functions. Selected effects have been documented in four case studies both in forests and wetlands: I) In the course of vegetation and soil development on experimental plots forested since 1963, concentration of RNs was reduced from >1000 Bq/kg to <200 Bq/kg in the top soil due to dilution by accumulation of organic carbon; II) in the stem wood of spruce and alder as few as 13–54 mg U/ha had been fixed; III) wetland compartments acted as strong sinks (> 1000 Bq/kg in organic matter); IV) water quality below a natural wetland — working as a filter within an uranium mineralisation hot spot in Malawi (SE-Africa) (> 2000 Bq/kg soil) — demonstrated no difference to a reference brook within the catchment.
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KALVITE, Zane, Zane LIBIETE, and Arta BARDULE Arta BARDULE. "FOREST MANAGEMENT AND WATER QUALITY IN LATVIA: IDENTIFYING CHALLENGES AND SEEKING SOLUTIONS." In RURAL DEVELOPMENT. Aleksandras Stulginskis University, 2018. http://dx.doi.org/10.15544/rd.2017.146.

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Rise in human population, industrialization, urbanization, intensified agriculture and forestry pose considerable risks to water supply and quality both on global and regional scale. While freshwater resources are abundant in Latvia, during recent years increased attention has been devoted to water quality in relation to anthropogenic impacts. Forest cover in Latvia equals 52% and forest management and forest infrastructure building and maintenance are among the activities that may, directly or indirectly, affect water quality in headwater catchments. Sedimentation, eutrophication and export of hazardous substances, especially mercury (Hg), are of highest concern. To address these topics, several initiatives have started recently. In 2011, cooperation programme between Latvian State Forest Research Institute (LSFRI) “Silava” and JSC “Latvia’s State Forests” was launched to evaluate the impact of forest management on the environment. This programme included research on the efficiency of water protection structures used at drainage system maintenance (sedimentation ponds, overland flow) and regeneration felling (bufferzones). In 2016, within the second stage of this cooperation programme, a study on the impact of forest management on water quality (forest road construction, drainage system maintenance, felling) was started on a catchment scale. Since 2016 LSFRI Silava is partner in the Interreg Baltic Sea Region Programme project “Water management in Baltic forests”. By focusing on drainage systems, riparian zones and beaver activity, this project aims at reducing nutrient and Hg export from forestry sites to streams and lakes. While this project mostly has a demonstration character, it will also offer novel results on Hg and methylmercury (MeHg) concentrations in beaver ponds in all participating states. This paper aims at summarizing most important challenges related to the impact of forest management on water quality and corresponding recent initiatives striving to offer solutions.
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Ulloa-Cedamanos, Francesco, Jean-Luc Probst, Anne Probst, and Vanessa Dos-Santos. "What can we learn about the hydrochemical dynamics of streamwater during flood events in a forested karstic catchment from the Pyrenees Mountains (Southwestern France)?" In 5th International Electronic Conference on Water Sciences. Basel, Switzerland: MDPI, 2020. http://dx.doi.org/10.3390/ecws-5-08058.

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Sánchez-Murillo, Ricardo. "DOC transport and export in a dynamic tropical catchment." In I Congreso Internacional de Ciencias Exactas y Naturales. Universidad Nacional, 2019. http://dx.doi.org/10.15359/cicen.1.35.

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Dissolved organic carbon (DOC) transport and export from headwater forests into freshwaters in highly dynamic tropical catchments are still understudied. Here, we present a DOC analysis (2017) in a pristine and small (~2.6 km2) tropical catchment of Costa Rica. Storm flows governed a rapid surface and lateral allochthonous DOC transport (62.2% of the annual DOC export). Cross-correlation analysis of rainfall and stream discharge indicated that DOC transport occurred on average ~1.25 hours after the rainfall maxima, with large contributions of event water, ranging from 42.4±0.3% up to 98.2±0.3% of the total discharge. Carbon export flux (annual mean=6.7±0.1 g C m-2 yr-1) was greater than values reported in subtropical and temperate catchments. Specific ultraviolet absorbance indicated a mixture of hydrophobic humic and hydrophilic non-humic matter during both baseflow and storm events. Our results highlight the rapid storm-driven DOC transport and export as well as low biogeochemical attenuation during baseflow episodes in a climate sensitive hot-spot. By understanding the key factors controlling the amount of organic carbon transported to streams in dynamic tropical landscapes, better global and catchment-scale model assessments, conservation practices, and water treatment innovations can be identified.
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Boyer, Elizabeth W. "BIOGEOCHEMICAL CYCLING IN MID-APPALACHIAN FORESTED CATCHMENTS." In 53rd Annual GSA Northeastern Section Meeting - 2018. Geological Society of America, 2018. http://dx.doi.org/10.1130/abs/2018ne-311377.

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Li, Tailin, Jakub Jerabek, David Zumr, Nina Noreika, and Tomas Dostal. "Assessing spatial soil moisture patterns at a small agricultural catchment." In 2021 IEEE International Workshop on Metrology for Agriculture and Forestry (MetroAgriFor). IEEE, 2021. http://dx.doi.org/10.1109/metroagrifor52389.2021.9628588.

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