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  • Invasive crayfish as drivers of fine sediment dynamics in rivers : field and laboratory evidence
  • This study explores the impacts of invasive signal crayfish on suspended sediment dynamics at the patch scale through laboratory and field study. Three hypotheses are presented and tested : 1) that signal crayfish generate pulses of fine sediment
  • to drive an overall increase in turbidity. Laboratory mesocosm experiments were used to explore crayfish impacts on suspended sediment concentrations for 2 treatments : clay banks and clay bed substrate. For the field study, high frequency near-bed and mid
  • mobilisation through burrowing and movement that are detectable in the flow field; 2) that such pulses may be more frequent during nocturnal periods when signal crayfish are known to be most active; and 3) that cumulatively the pulses would be sufficient
  • 2014
  • The study was conducted in Lushoto District, north-eastern Tanzania. Sixty fields with five different sustainable land management (SLM) categories were studied. The bio-physical properties of the fields were determined, and measurements
  • the slope and reduce soil losses by water erosion significantly. The use of high amounts of farmyard manure on the terraces of SLM 1 and SLM 2 category fields resulted in a 3 to 4 times higher yield of maize compared to the control plots (SLM 5), while yield
  • of beans increased 6 to 7 times compared to the control plots. Despite the use of farmyard manure on better managed fields, no significant improvements of soil fertility were found. This is probably because the amounts applied are too small to allow build
  • 2014
  • Agricultural practice ; Agropedology ; Anatolia ; Comparative study ; Crop yield ; Experiment plot ; Infiltration ; Semi-arid area ; Soil properties ; Turkey ; Wheat
  • The aim of this study was to research the influence of 4 different tillage practices (T1 : Conventional tillage; T2 : Reduced tillage-I;; T3 : Reduced tillage-II and T4 : No-till) on bulk density, total porosity, penetration resistance, field
  • capacity, field water content and the infiltration rate of a loamy soil in a semi-arid region with a cool climate and an annual mean temperature of 5.6 °C. In particular, the effectiveness of the no-till practice was investigated. The AA. made assessments
  • higher field capacity, field water content and infiltration rate; Soil bulk density and penetration resistance were lower in conventional tillage; No-till practice increased winter wheat germination.
  • 2014
  • how technicians elaborate knowledge in the field and on the fly, this study reveals spheres of politics where regularization could be modestly contested or transformed. Such politics are worth attending to because in northern Guatemala and elsewhere
  • This paper examines the work of regularizing (titling) land in the context of a World-Bank-funded market-assisted land reform project in northern Guatemala. Specifically, the focus is on the meaning-making work of field technicians who seek
  • 2014
  • Growing buildings in corn fields : urban expansion and the persistence of maize in the Toluca Metropolitan Area, Mexico
  • This paper discusses a study of household land-use and livelihood strategies in the Toluca Metropolitan Area, west of Mexico City, a traditional maize-growing region that has experienced rapid urban growth. It shows that maize is being abandoned
  • 2014
  • Flume- and field-based evaluation of a time-integrated suspended sediment sampler for the analysis of sediment properties
  • This study evaluates the sampler under both flume and field conditions for efficiency in the mass and grain size of the suspended sediment collected. The sampler was tested in a flume using both kaolinite and sediment samples (sieved to < 180 μm
  • 2014
  • Spatial variability in soil compaction properties associated with field traffic operations
  • This study was carried out, at the Ataturk University Research Farm in the Erzurum Plain, to determine the effects of field traffic operations on the changes in spatial variability of soil aggregate stability (AS), bulk density (BD), total porosity
  • 2014
  • upon the problem of drinking. As a result, the paper exposes the discrepancies between what is said (of alcohol by policy makers) and what is done (about alcohol within policy, as an original contribution to the multidisciplinary field of critical
  • alcohol studies. - (AJC)
  • 2014
  • Alluvium ; Aragón ; C 14 dating ; Cave ; Comparative study ; Holocene ; Huesca ; Lacustrine sediment ; Model ; Palaeo-environment ; Palaeomagnetism ; Quaternary ; Sedimentary ; Spain
  • A paleomagnetic study has been carried out on a waterlaid detrital sedimentary sequence within the Seso Cave System (West-Central Pyrenees). The detrital sedimentary sequence is made of autochthonous (piping detached material from the Eocene marls
  • catalog and available geomagnetic models in order to determine the accuracy of these sediments recording the Earth's magnetic field. Results suggest that these sediments poorly record the Earth's magnetic field, however, paleomagnetic inclination shows
  • 2014
  • Arid area ; Beijing ; China ; Comparative study ; Erosion control ; Experiment plot ; Geotextile ; Rainfall simulation ; Semi-arid area ; Soil erosion ; Water erosion
  • of rainfall simulation experiments on laboratory plots showed that JM, PM and PN could delay the time to runoff, reducing runoff and decreasing erosion. Field studies were also conducted on a restored rock slope in Fengshan quarry, northeast Beijing, China
  • Three types of geotextiles including jute mat (JM), polyester mat (PM) and polyester net (PN) were installed on slopes and their effects on erosion control and vegetation growth were investigated by both laboratory and field experiments. The results
  • 2014
  • Perceiving the ordinary : a study of everyday landscapes in Belgium
  • landscapes more attractive. Less educated par-ticipants felt more positive towards anthropogenic landscapes. Women were more attracted by farmed fields. Qualitative data added depth to the analysis, permitting to explore different ways in which people related
  • 2014
  • Integrating undergraduate fieldwork into the study of human mobility
  • This article reports on a second-year field course to Noosa, Australia, that blends new technologies with conventional survey techniques to capture data on a spectrum of human spatial behaviour. Over the course of a single weekend, students collect
  • 2014
  • . This paper combines field studies of morphology and sedimentary deposits, studies of historical maps, digital terrain model, ground-penetrating radar profiles, and luminescence dating. Four phases were highlighted. The studied beach-ridge system records about
  • This study investigates the morphological impacts of the 1872 Baltic storm flood on a beach-ridge system (sandy spit) in south-eastern Denmark and evaluates the frequency of extreme storm flood events in the area over a longer time perspective
  • 4500 years of accumulation; the storm flood sediments described are unique suggesting that the 1872 Baltic storm flood event was an extreme event. Thus studies of beach-ridge systems form a new source for understanding storm surge risk.
  • 2014
  • Modeling wind erosion flux and its seasonality from a cultivated sahelian surface : A case study in Niger
  • A wind erosion model is tested in this study to check the capacity to reproduce observations collected over a millet field and a neighboring bare plot in southwestern Niger during a three-year period. Observations of sediment horizontal fluxes
  • and of vegetation growth and decay show that most of the eroded mass is due to major events occurring at the end of the dry season and at the beginning of the rainy season for the millet field, while erosion also occurs during the dry season for the bare soil plot
  • 2014
  • Determination of 137Cs reference inventories in a large-scale region : A case study in the central-eastern Inner Mongolia Plateau
  • In this study, traditional 137 Cs reference inventory (CRI) acquiring methods were summarized first, and then a new complex scheme was established, involving 7 core steps and coupling the model estimate and sample measurement. The above CRI
  • determination methodology was implemented in the central-eastern Inner Mongolia Plateau. According to the new CRI determination scheme, temporal remote-sensing-based land use/cover history is deduced, field measured values and model simulated values are compared
  • , and the soil erosion/deposition process analysis emphasized. The newly proposed CRI determination scheme was proved effective, and the determined CRI plots and CRI values were convincing. The methodology offered a framework for 137Cs tracing studies in large
  • 2014
  • In this study, high resolution images are combined with field measurements in order to quantitatively study the migration and long term changes in the shape and morphology of barchans. The results indicated a power correlation between height
  • geometry and mathematical modeling. Surprisingly, there was no significant difference between focal length and mean curvature of barchan parabola from 2001 to 2011. It seems the general shape of the studied barchans has not changed for long periods of time
  • . The minimum and the maximum annual displacements of the barchans were 9 and 22 m, respectively, in the study area. It was also demonstrated that the best morphologic estimators for migration rate of dunes are in this order : width, mean curvature of windward
  • 2014
  • The aims of this study were to examine time stability of the spatial pattern of soil water storage (SWS) at different seasons and depths, to identify representative monitoring locations (RMLs) that consistently reflect field average SWS
  • in the spatial patterns were depth dependent, and that persistent spatial patterns indicated consistent underlying hydrological controls. The locations that store about field-averaged soil water were identified at depths. The measurement of SWS through
  • 2014
  • In this study, 32 rainfall simulation experiments were conducted in order to analyze the effects of 2 different microtopography indices (row grade and field slope), 2 ridge geometry indices (ridge height and ridge width), and rainfall intensity
  • that the interactions between the different factors, especially between ridge height, row grade, and rainfall intensity, play an important role during the erosion process by increasing runoff and sediment yield per min. Therefore, reducing the field slope and using high
  • 2014
  • The paper contributes to the detailed reconstruction of the geological, geomorphological and land development conditions of the Hajdúhát and its southern neighbour, the South Hajdúság, based on recent shallow boreholes and a detailed field survey
  • of closed depressions without outlets – seldom studied in earlier research – is also discussed. - (AM)
  • 2014
  • Community ; Conflict ; Corruption ; Cultural studies ; Ethnicity ; Kenya ; Land ; Land market ; Land rights ; Nairobi ; Settlement ; Violence
  • The stories of land matters in four lower income settlements in Nairobi, Kenya, drawn from extensive interviews with their occupants and officials and field observations, shed light on the roles of corruption and ethnicity in land conflictsand
  • 2014