scholarly journals Effect of two management techniques applied to the reduction of Juncus maritimus (Lam.) abundance in a selected temporary wetland

2019 ◽  
Vol 41 (1) ◽  
pp. 120-132
Author(s):  
Nargis Sahib
Keyword(s):  
Vegetation Structure ◽  
Water Levels ◽  
Seed Stock ◽  
Temporary Wetlands ◽  
Temporary Wetland ◽  
Juncus Maritimus ◽  
Characteristic Species ◽  
Management Techniques ◽  
Set Up ◽  
Experimental Plots

Abstract Moderate management of temporary wetlands is one of the most proper methods for their restoration and conservation. The cessation of use may lead to high biomass domination by macrophytes as Juncus maritimus (Lam.) that changes plant community structure, threatens species biodiversity, and becomes a danger for their conservation. The experiment was carried out in Sidi Boughaba coastal reserve in Morocco. Two management techniques of wetlands were tested, cutting and uprooting of the rush. Four experimental plots (4.2 × 2.9 m) within the rush belt were set up, with intact plots as a control. Vegetation structure and water levels were monitored on 96 quadrats over two years. The six visits dates, three visits per year (February, April, June), were monitored over two years. The abundance and richness of species were studied, simultaneously with the density of the seed stock in each plot. Results showed that both techniques allowed the opening of the habitat with a significant increase of richness and abundance of species, particularly the restoration of characteristic species of the temporary wetland from the seed bank. The cut technique seems to have less of an effect on the seed stock, total seeds median value was 6.5 in cut plots versus 5 in uprooting plots, being regularly applied given the rapid encroachment of the rush.

scholarly journals Analysis of the development of a hydrological balance for future decades in the Senianska depression in the Eastern Slovak lowland

2010 ◽  
Vol 18 (4) ◽  
pp. 30-40 ◽  
Author(s):  
M. Tegelhoffová
Keyword(s):  
River Basin ◽  
Overland Flow ◽  
Water Levels ◽  
Water Control ◽  
Mike She ◽  
Hydrological Balance ◽  
Small Water ◽  
Model Domain ◽  
Physically Based ◽  
Set Up

Analysis of the development of a hydrological balance for future decades in the Senianska depression in the Eastern Slovak lowlandThe goal of the article was to analyze the hydrological balance for future decades in a pilot area in the Eastern Slovak lowland. The aim was to set up the physically-based Mike SHE hydrological model for the modeling hydrological balance in the selected wetland ecosystem in the Eastern Slovak Lowland. The pilot area - the Senianska depression is located near the village of Senne, between the Laborec and Uh Rivers. Specifically, it is a traditional landscape of meadows, marshes, cultivated soil, small water control structures and forests. To get a complete model set up for simulating elements of the hydrologic balance in the pilot area, it was necessary to devise a model for a larger area, which includes the pilot area - the Senianska depression. Therefore, both the Mike SHE model was set up for the Laborec River basin (a model domain of 500 × 500 m) and the Čierna voda River basin (a model domain of 100 × 100 m), for the simulation period of 1981-2007, is order to get the boundary conditions (overland flow depth, water levels, discharges and groundwater table) for the model of the pilot area. The Mike SHE model constructed for the pilot area - the Senianska depression (a model domain of 1 × 1 m) -was used to simulate the elements of the hydrological balance for the existing conditions during the simulation period of 1983-2007 and for climate scenarios for the simulation period of 1983-2100. The results of the simulated elements of the hydrological balance for the existing conditions were used for a comparison of the evolution of the hydrologic conditions in the past, for identifying wet and flooded areas and for identifying the spatial distribution of the actual evapotranspiration in the pilot area. The built-up model with setting values was used for modeling the hydrological balance in changed conditions - climate change.

scholarly journals Experiences of the Intensive Care Unit of Hospital Raja PerempuanZainab II in handling the Massive Evacuation of Critically-Ill Patients during Flood Disaster.

2018 ◽  
Vol 2 (4) ◽  
pp. 224
Author(s):  
WI Wan Nasruddin ◽  
ZA Nor Hidayah ◽  
A Nazri ◽  
WI Wan Azzlan ◽  
I Ruwaida ◽  
...  
Keyword(s):  
Intensive Care Unit ◽  
Intensive Care ◽  
Critically Ill ◽  
Critically Ill Patients ◽  
Life Support ◽  
The State ◽  
Flood Disaster ◽  
Water Levels ◽  
Tertiary Centre ◽  
Set Up

In December 2014, Malaysia had suffered nationwide floods after unprecedented monsoon rains overwhelmed several parts of the country. The East Coast areas of Malaysia were especially badly affected, specifically for the state of Kelantan, whereby a total of 170,000 victims were evacuated to the evacuation centres. This was the worst flood in the last 40 years and has been referred to by the locals as ‘Bah Kuning’. As a tertiary centre for the state of Kelantan with a total number of hospital beds of 937, HRPZ II was also badly compromised during this time. The electricity supply to the main hospital building was shut-down during this period and the hospital had managed to maintain its operations hUP_(ÛT_e power from a generator which had faced the risk of being shut down if the water levels had increased further. These issues might have caused a worse impact viaa possible loss of electrical and oxygen supply and non-functional life support systems. In relation to this flood disaster, the Anaesthesiology and Intensive Care Unit of HRPZ II would like to share the experiences of handling ventilated and critically ill-patients for evacuation during the massive floods in 2014 from the ICU of Hospital Raja Perempuan Zainab II to “an open stage with no facilities”. During this time, we had a total of 19 patients in our 21-bedded Intensive Care Unit. The challenge was the need to evacuate all the critically ill patients and to set-up a new ICU in a safer place immediately at the time.International Journal of Human and Health Sciences Vol. 02 No. 04 October’18. Page : 224-227

scholarly journals A NEW HYBRID APPROACH IN THE CALIBRATION OF BOUSSINESQ-TYPE WAVE BREAKING MODELS

2018 ◽  
pp. 24
Author(s):  
Joaquín Moris ◽  
Patricio Catalán ◽  
Rodrigo Cienfuegos
Keyword(s):  
Wave Height ◽  
Wave Breaking ◽  
Numerical Models ◽  
Hybrid Approach ◽  
Boussinesq Equations ◽  
Water Levels ◽  
Statistical Parameters ◽  
Time Space ◽  
Forcing Mechanisms ◽  
Set Up

Wave breaking is one of the main forcing mechanisms in coastal hydrodynamics, driving mean water levels and currents. Understanding its behavior is key in the goal of improving our comprehension of coastal morphodynamics variations. One way to improve our understanding is through the use of numerical models, such as phase-resolving numerical models based on the Boussinesq equations (Kirby, 2016), which are modified to include breaking by the inclusion of a breaking criteria and a dissipation mechanism. Since there is not a universal law capable of characterizing the wave breaking, the existing models must be calibrated. Traditionally, this is done by adjusting wave height profiles and other free surface statistical parameters without explicitly considering the time-space location and duration of the breaking process. Consequently, it is possible to calibrate a model that accurately represents wave elevation statistics parameters, such as wave height and wave set-up; however, it might not necessarily represent the breaking location-duration and therefore, the forcing.

Research on Personalized Customization of Paper Packaging Products

2012 ◽  
Vol 200 ◽  
pp. 532-535
Author(s):  
Feng Xu
Keyword(s):  
Management Framework ◽  
Development Status ◽  
Management Techniques ◽  
Set Up

Based on the analysis of the characteristics of paper packaging products and development status of paper packaging enterprises, new relationship between customers and enterprises was built using personalized customization technology on paper packaging products. Simultaneously, the informatization management framework of paper packaging enterprise was set up through integrating modularization and management techniques.

scholarly journals Ground effects and hydrological changes in the Southern Apennines (Italy) in response to the 23 July 1930 earthquake (<i>M<sub>S</sub></i>=6.7)

2009 ◽  
Vol 9 (2) ◽  
pp. 539-550 ◽  
Author(s):  
E. Esposito ◽  
R. Pece ◽  
S. Porfido ◽  
G. Tranfaglia
Keyword(s):  
Monitoring Network ◽  
Water Levels ◽  
Great Earthquake ◽  
Southern Apennines ◽  
Stream Flows ◽  
Loma Prieta Earthquake ◽  
Hydrological Changes ◽  
Water Wells ◽  
Porosity And Permeability ◽  
Set Up

Abstract. The 23 July 1930 earthquake (MS=6.7) in the Southern Apennines (Italy) was a catastrophic event that produced many effects such as surface faulting, fractures, landslides, settlements, hydrological changes, variations in chemical/physical activity related to the volcanic and/or thermal zones and also acoustic and optical phenomena. It is the first great earthquake of the twentieth century that was studied, thanks to the hydrological monitoring network of the Italian Hydrographic Survey (IHS) set up from 1925 to 1929. For this earthquake we analysed the initial IHS hydrometric and pluviometric data, looking for significant anomalies in springs, water wells and mountain streams. Hydrological data relative to rivers, springs and water wells indicate that some changes can be correlated with the earthquake: a post-seismic excess discharge in some streams, pre- and co-seismic decreases in stream flows and water levels in wells, pre- and post-seismic increases in discharges. The pre- and co-seismic stresses and the tectonic deformations were studied in order to find a possible model of interaction between stress state and hydrological variations. The anomalies found in this work can be considered "rebound anomalies", which are the most common precursor reported by many authors and related to increases in porosity and permeability caused by the fracturing that precedes an earthquake. An estimation of the total excess discharge (0.035 km3) caused by the MS=6.7 Irpinia earthquake is consistent with the excess discharge of about 0.01 km3 determined for the Mw=6.9 Loma Prieta earthquake.

scholarly journals FREQUENCIES AND PROBABILITIES OF EXTREME STORM SURGES

1978 ◽  
Vol 1 (16) ◽  
pp. 54
Author(s):  
Alfred Bohrbuter
Keyword(s):  
Storm Surges ◽  
Weather Conditions ◽  
Water Levels ◽  
High Wind ◽  
Shallow Sea ◽  
The North ◽  
Extreme Storm ◽  
Mean Wind Speed ◽  
The North Sea ◽  
Set Up

The North Sea as a very shallow sea with high wind set-up effects is acting highly as extremely sensitive measuring equipment for climatic changes, especially for surge producing weather conditions. The flood disaster in the Netherlands 1953, in Germany 1962, the Adolph-Bermpohl-Orkan (1967), with mean wind speed of 37 ra/sec. over 5 hours, the strong continental storm with high damages in the forests from France till Poland in November 1972, a series of 6 heavy floods in November/ December 1973 and two extreme floods in January 1976 with the highest water levels ever registrated in the German bight are indications for some changes in meteorological conditions. In this paper some hypothetical models shall be introduced which are able to show how extreme storm surge frequencies and probabilities are changing with time.

scholarly journals Assimilation of Piezometric Data to Calibrate Parsimonious Daily Hydrological Models

Water ◽  
2021 ◽  
Vol 13 (17) ◽  
pp. 2342
Author(s):  
Axel Flinck ◽  
Nathalie Folton ◽  
Patrick Arnaud
Keyword(s):  
Time Series ◽  
River Flow ◽  
Hydrological Model ◽  
Water Levels ◽  
Model Parameters ◽  
Rainfall Time Series ◽  
Time Step ◽  
Processing Methods ◽  
Analysis System ◽  
Set Up

Low water levels are a seasonal phenomenon, which can be long, short, and more or less intense, affecting entire watercourses. This phenomenon has become a concern for many countries who seek better understanding of the processes that affect it and learn how to optimally manage water resources (pumping, irrigation). Consequently, a lumped rainfall model at daily time step (GR) has been defined, calibrated, and regionalised over French territories. The input data come from SAFRAN, the distributed mesoscale atmospheric analysis system, which provides daily solid and liquid precipitation and temperature data throughout the French territory. This model could be improved, in particular to more accurately simulate the hydrological response of watersheds interacting with groundwater. The idea is to use piezometric data from the ADES bank, available in France, and to use it for the calibration phase of the hydrological model. The analysis was carried out across ten French catchments that are representative of various hydrometeorological behaviours and are located in a diverse hydrogeological context. Each catchment must be represented by a piezometer that closely represents the main aquifer that interacts with the basin. This piezometer is located on part of the watershed that is most covered in terms of its drainage network, and closest to its outlet. Different signal processing methods are used to characterise the relationship between the fluctuation of river flow, piezometric levels and rainfall time series. Potential processing methods will be carried out in the temporal domain. To quantify groundwater table inertia and that of the catchment area, correlograms were calculated from daily chronicles of flows and piezometric levels. A cross-correlatory analysis was set up to see, in more detail, the correlations between the flow rates (especially base flows) and piezometric level time series. This type of analysis makes it possible to study relationships between various observations, and tests were carried out to take this information into account during the phase of the calibration of hydrological model parameters. These different analyses will hopefully help us to use piezometric data to consolidate the quality and robustness of the modelling.

scholarly journals Mobile System to Support Flood Area Information Distribution. Case Study: Central Jakarta Area

2017 ◽  
Author(s):  
Wihartini ◽  
Wahyu Pramusinto ◽  
Indra Riyanto
Keyword(s):  
Information Systems ◽  
Knowledge Base ◽  
Information Dissemination ◽  
Water Levels ◽  
Distribution Area ◽  
Distributed Information ◽  
The Public ◽  
Water Gate ◽  
Set Up

Mobile Phone (HP) is a mobile communication system that has been popular in the community in Jakarta. Because HP can be taken anywhere it is appropriate as a means of information dissemination. Flood is a very distressing event that the public, especially residents of Jakarta. Not just traffic jams everywhere, but also can stop the activities of the community. This research uses knowledge base to inform the distribution of flood area based correlation between the heights of water surface at the water gate with a distribution area of flood water. A knowledge base flood data area and the water levels in water gate for the preceding year are set up manually by gate attendant, the attendant can up-date when the data changes. In this system there is interaction between the gate attendant, systems and society: Gate attendant update the floodgates data into the master. When updating the master of gates, floodgates required name, map coordinates and their gate.Dissemination of information is by the use of Distributed Information Systems of flooded areas can be done quickly and widely. This system is expected to be developed continuously in order for the water levels at the floodgates can be updated in real time and integrated with flood area information systems.

scholarly journals Effects of water pH on physiological parameters and color changes of Asian Bumblebee Catfish (Pseudomystus siamensis Regan, 1913)

2019 ◽  
Vol 02 ◽  
pp. 78-87
Author(s):  
Tuan V. Vo
Keyword(s):  
Blood Cells ◽  
Color Change ◽  
White Blood Cells ◽  
Physiological Parameters ◽  
Water Levels ◽  
Cumulative Mortality ◽  
Color Changes ◽  
Water Ph ◽  
Mortality Ratio ◽  
Set Up

Effects of water pH on blood physiological parameters and color change of Asian bumblebee catfish (Pseudomystus siamensis) (4 – 6 g/fish) were carried out in laboratory condition. The experiment was set up in 8 weeks at different pH water levels (pH = 3, 4, 5, 6, 7, 8, 9, 10, 11). The results have shown that the cumulative mortality ratio of Asian bumblebee catfish at the end of 24 h challenge was 100% at pH = 11, 70.83% at pH = 10, and 62.5% at pH = 3. No mortality of fish was observed at pH = 4, 5, 6, 7, 8, 9 after 24 h of the challenge. The lowest and highest pH threshold that killed 50% of fish after 24 h of the challenge were 3.04 and 9.95, respectively. After 24 h of the challenge, total number of red and white blood cells of fish increased at pH = 3, 9, 10, and get the highest level at pH = 3 (1.87 × 106 cells/mm3 and 1.59 × 105 cells/mm3, respectively. At the end of the challenge, highest number of red and white blood cells were observed at pH = 8 (2 ± 0.23 × 106 cells/mm3 and 1.27 ± 0.26 × 105 cells/mm3, respectively). Fish were in bright and beautiful color when cultured in high pH water levels.

scholarly journals INVESTIGATION OF WAVE INDUCED STORM SURGE WITHIN A LARGE COASTAL EMBAYMENT - MORETON BAY (AUSTRALIA)

2011 ◽  
Vol 1 (32) ◽  
pp. 22 ◽  
Author(s):  
Philip Treloar ◽  
David Taylor ◽  
Paul Prenzler
Keyword(s):  
Water Level ◽  
Tropical Cyclones ◽  
Storm Surge ◽  
Wave Model ◽  
Water Levels ◽  
Residual Water ◽  
Storm Tide ◽  
Moreton Bay ◽  
Coastal Embayment ◽  
Set Up

Moreton Bay is a large coastal embayment on the south-east Queensland coast which is surrounded by the urbanised areas of greater Brisbane on its western and southern shorelines. It is protected from the open coast by a number of islands, including South Stradbroke, North Stradbroke and Moreton Islands. Tropical cyclones occasionally track far enough south to cause significant damage to south-east Queensland due to flooding, winds, waves and elevated ocean water levels. Distant tropical cyclones which may be several hundred kilometres north of Moreton Bay have been known to cause storm surge, high waves and erosion inside Moreton Bay. These events generally do not generate gale force winds within Moreton Bay, but can generate large ocean swell waves. It has been identified that the wave conditions generated from distant cyclones can cause a variation in water levels inside Moreton Bay. A detailed study was undertaken to investigate the regional wave set-up process which affects Moreton Bay. The simulation of the residual water levels within Moreton Bay using a coupled hydrodynamic and wave model system developed for this study is considerably more accurate than applying a hydrodynamic model alone and explains water level anomalies that have a tidal frequency. The paper discusses the physical process of regional wave set-up inside a large embayment, analysis of observed residual water level and also the modelling study undertaken to quantify the influence of waves on storm tide levels inside Moreton Bay. The storm tide hazard study for the Moreton Bay Councils included the effects of regional wave set-up in the specification of design water levels.

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