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The MENAT Regenerative Agriculture Venture Programme is calling on innovative research, science & nature-based solutions tackling food security, soil health, water scarcity, climate change mitigation and adaptation, carbon sequestration, salinity, biodiversity loss, desertification and rural social welfare.
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Hi!, hope you're having a great day, being safe at home.
I'm from La Paz, Baja California Sur, México, and I'm writting my proposal for my thesis project for my Bachelors Degree in Management and water sciences.
Currently I'm interested in researching the economic assesment methods for ecosystem services (ES), specifically those related to catchment and provision of water.
I should mention that the region where I'll be working is a property located in the upper zone of the watershed (, where the main population are smallholders whose actions have cased the deterioration of the soil due to livestock activities; coupled with the arid climate or the region where the average maximum temperature is 36°C and the mean annual precipitation corresponds to 180-200 mm.
I already understand these phases for making the assesment process:
1. Identify the purpose of the assessment.
2. Identify the geographic scope of the proposal.
3. Identify the ecosystem services located in the geographic scope of the program.
4. Identification and characterization of the economic agents that benefit from the ES.
5. Prioritization and characterization of ecosystem goods and services.
6. Identify the different types of value (use / non-use) that are of interest for their economic valuation.
7. Choice and application of the economic valuation method.
I know that these phases that I have identified may seem clear but, but I have not yet been able to determine the indicators with which I am going to study in the field, and how to apply them to the design of my assesment method.
Hope you can help me, and if you have anny recomendations, I'm open to read what you have to teach me.
Thank you so much!
I am masters student and I will be studying micro plastics on a river system in the UK. I have only found one location that sells Manta nets in USA but I was wondering if anyone knew of one to buy or borrow in the UK.
May someone tell me how much the publication article fee is in the water science and technology journal?
how can I study degradation mechanism/pathway in macrophytes / Plants used to treat effluent of mixture of reactive dyes. I have studied references on bacteria but didn't get for macrophytes / plants. Please suggest me reference if any.
I am doing my research work in this field,so i think any one can help by saying solution to this problem,i have refered so many articles but i could not found solution. If any related papers are their on this please upload
Do you think the COVID-19 pandemic will significantly impact on water systems? With respect to recreational, surface and groundwater quality and supply?
Hi!, hope you're having a great day, being safe at home.
I'm from La Paz, Baja California Sur, México, and I'm writting my proposal for my thesis project for my Bachelors Degree in Management and water sciences.
Currently I'm interested in researching the economic assesment methods for ecosystem services (ES), specifically those related to catchment and provision of water.
I should mention that the region where I'll be working is a property located in the upper zone of the watershed (, where the main population are smallholders whose actions have cased the deterioration of the soil due to livestock activities; coupled with the arid climate or the region where the average maximum temperature is 36°C and the mean annual precipitation corresponds to 180-200 mm.
I already understand these phases for making the assesment process:
1. Identify the purpose of the assessment.
2. Identify the geographic scope of the proposal.
3. Identify the ecosystem services located in the geographic scope of the program.
4. Identification and characterization of the economic agents that benefit from the ES.
5. Prioritization and characterization of ecosystem goods and services.
6. Identify the different types of value (use / non-use) that are of interest for their economic valuation.
7. Choice and application of the economic valuation method.
I know that these phases that I have identified may seem clear but, but I have not yet been able to determine the indicators with which I am going to study in the field, and how to apply them to the design of my assesment method.
Hope you can help me, and if you have anny recomendations, I'm open to read what you have to teach me.
Thank you so much!
At above-freezing temperatures, I know RVP is a function of temperature and food composition. However, it becomes dependent on temperature when its sub-freezing temperatures and the kind and ratio of solute no longer matters. How is this related to the water activity? Is it because the water freezes and the ions of the dissolved solute no longer disrupt the structure since they're immobilized as well?
In one of my experiment, some adsorbent is used for the removal of heavy metals from water. Now I want to recover the metal from residues.
Due to environmental impacts of dams such as:
- problems for the surrounding area, for plant life,
- dams block up flowing bodies of water, such as rivers, any animals that depend on the flow to reproduce or as part of their life cycle are put in danger.
- Harm water quality and temperature.
- Block fish migration
- ...
I'm compiling some examples of good bad aquatic biomonitoring studies for a commentary on monitoring practices. I have a couple published bad examples , but am on the lookout for more good, bad examples.
For example, in a study of power plant effluents discharged near the transition of a flowing river to a standing water reservoir, the reference sites were located in the flowing river and the assessment sites were located in the reservoir. The investigators concluded that benthic communities are different in rivers and reservoirs.
In another reference example, the investigators dispensed with reference sites all together because they were only interested in whether there were changes year to year in assessment sites, not in whether the reference conditions were different.
Another bonehead design is to use chemical detection limits that were higher than the water quality criteria that are being assessed.
I'm after citable works that can be specially discussed in open. Appreciate any leads, which may of course be sent privately.
Confoundedly yours,
Chris
Hi guys,
I am currently a third year student conducting a dissertation involving a simulation which consists of one or more breaches on a selected area to see how the placement and size of these breaches affect the flooded area.
As such I was wondering what sort of water velocity would be detrimental and ideal in creating a salt marsh environment?
I had a search through the internet for several hours and I couldn't find anything to answer my question- most probably due to the lack of scientific language I use for the search query. Thus if you could help me I would be really pleased!
Kind regards,
Hamza
Hi everyone
The future of farming and food security in different region of the world seems to be changing under the influence of climate change. Developing countries are at greater risk of food security than developed countries. Planning to human food beings in the future should be taken into consideration now. In some areas, water resources are in critical condition. Considering the population growth and the fossil fuels ending probability in the future, the importance of extraction of energy in the future than nowadays will be much higher and will be a serious challenge for different countries. Perhaps policies for agricultural products in some countries may change.
In your opinion, what needs to be done in order to have food security in the future?
correlation will give some idea about GHG emissions w.r.t C:N:P , SOC
Hello
Every one have article about drought with spi & gis softwave in 2017&2016?
with thanks
I am interested in analyzing the chemistry of oil production waters, with the purpose to refine calculations of mineral scales and its possible correlations with radiolements.
Dear Friends, The Department of Water Science of the Hungarian National Civil Service organizes an international conference on water services in the first quarter of 2018. The exact theme of the conference is still under construction. We would like to compare the experiences of the Hungarian water reform with the international results. Focus will be on integration, forms of ownership, and managment. I would like to carry out a research on who might be interested in this topic
It seems that in many parts of the world and even in the most technically advanced parts of north america, if the water is available, farmers choose to over water as a normal practice. It is a simple choice to be made. Does the farmer error on the side of under watering resulting in permanent wilt or over watering resulting in oxygen starved roots? Permanent wilt results in no production but oxygen starved roots only reduces potential production. As a result, over watering is the normal condition found in commercial agriculture.
We now have the systems and methods available to calculate agricultural water requirements far more precisely. Growers do not need to guess anymore about water amounts to use. And growers no longer need to over water to be safe. Conservatively, if agriculture calculated it's water use more precisely, Washington State University has demonstrated that by using ETcrop water calculation, water is conserved as compared to non ET calculation practices. By using AGDU maturity modelling in concert with ETcrop, I estimate that some places could have 5% more fresh water. In north america, I estimate 15% more fresh water available for drinking.
Over watering leads to evaporated water. But more important, over watering flushes chemicals down into the drinking water. So when agricultural chemicals are found in ground water not subject to contamination by runoff, the only explanation is over watering beyond what the plant needs. The chemicals leach into the excess irrigation water and flush down into the ground water.
My Question: Is the prevention of ground water contamination caused by agricultural irrigation a focus of this project? If so, what methods will be considered to limit contamination of ground water by agricultural irrigation?
Do we really need to follow the system of Ro system and then evaporation in ZLD system, when our TDS is 7000 ppm as a feed.
.Why can't we directly use evaporation technique for this scenario?.
In control, i used 0.85% NaCl and water quality parameter were maintained pH ( 7.5, Alkalinity-50, de-chlorinated water), Tilapia BW 25+/-5
The Mouse delve many channel in soil plot.
Photo is attached.

Dear all,
I am preparing a Lake/Wetland Parameter File for my study domain. Lakes are not present in the study area, but wetlands are a dominant class; around 28% of the total area covered by wetlands. In this case, I am wondering about some parameter values in the Lake/Wetland Parameter File, which are as follows:
1. 1st row, 4th column; min_depth (m) = Lake depth below which channel outflow is 0.
2. 1st row, 5th column; wfrac = Width of lake outlet, as a fraction of the lake perimeter.
3. 1st row, 6th column; depth_in (m) = Initial lake depth.
4. 2nd row, 1st column; basin_depth (m) = Maximum allowable depth of the lake.
Please, not that LAKE_PROFILE is FALSE in my global parameter file. I have extracted all other parameters using land cover map. For parameter 3 and 4 (from above list), I am using DEM and Land cover datasets and methods from literature but unable to get proper values. For parameter 1 and 2 (from above list), I am not sure how to extract these values?
I would highly appreciate any assistance!
Thanks in advance!
I am interested to know the indirect method to measure the dissolved oxygen by using salinity, conductivity and/or temperature. Is there any exact relationship developed between these parameters? Thank you in advance.
Dear all,
Please help me to get the document. Chapter 14. "Salinity: electrical conductivity and total dissolved solids " in Methods of soil analysis. Part 3: Chemical methods. (Rhoades, 1996).
Many thanks in advance!
For my project i want to know how to increase the evaporation rate, and what are the factors majorly contribute for evaporation in solar still?
I am working on the water balance model using Thornthwaite-Mather model. I have seen some solved examples for that but I have some confusions. So if anyone is working/worked on that provide me some solved example or any reference.
I saw this, salinity = 1.80655*chlorinity (ppt) for seawater, is there any for freshwater
I want to know the latest literature on the vertical flow constructed wetland clogging .who could help me?
I am working on my thesis to produce IDF curves from TRMM data . for this I must process 52000 images and I want to know which format is best for this work and how process that .
I want to calculate the subsurface flow from the upper parts of the watershed which can enter the Vadose zone in the plain. As this is just a very little portion of my study, I have no time to run a complex and time consuming model. Therefore, can anybody introduce me a simple model or equation by which I can estimate the subsurface flow?
I am wondering if there is a simple formula to calculate the carbon footprint for certain vegetables. For example, I'd like to know the carbon footprint for a single bag of name-brand kale in the pacific northwest. I'm trying to demonstrate to local students that they can reduce their carbon footprint by growing their own vegetables. For outreach events I will be supplying people with vegetable seeds (like kale) and I think it would be great to give real numbers about carbon reduction. Thanks!
We are doing microplating for Coliforms, Staphylococci and APC's. We are observing >5 counts in the diluent blank plate nowadays.Does that requires an extra attention?
I am working on a project where I need to analyze water samples for ammonia through HACH LANGE (Nessler Method). When i joined anesthetic to water then analyzed, the results were very high.
so, I added anesthetic into blank, too. Because anesthetic was thickening the color of the water and results was more logical.
Can someone provide information about whether it is appropriate that this method has been manipulated? or another way I can find ammonia?
Thanks for your kindness.
#waterquality
I need the literature related to water quality forecasting and simulation...
How calculate water quality index for irrigation purpose if you have concentration of all cation, anions ,SAR, SP, RSC EC and pH.
If we put a full tanker of water connected with a pipe to the end of well with valves and as you will think with me , the tank has to has more than twice of of pipe.
pH, Salinity, TDS, Temprature, etc
I am working with fuzzy logic to design a new water quality index, and I find that Large of Maximum defuzzification method (for this case), is better than Centroid method; however, literature indicate that the second is one of the most commun methods.
To prepare saline water of 2 dS/m EC we add around 1 to 1.17kg of salt. How do we calculate this? Do we follow any formula for this or it is a hit and trial method by knowing EC of water and adding salt accordingly?
I want found this type of drought does have any trend or not and it depends to what
Arsenic in groundwater, pumping effects on variation of concentrate and drilling methods.
Having culculated ET in watts, I want to convert it into mm
water temperature 50 Celsius
hope to implement a recycling of water in the factory
Can you explain the general procedures when attending to food complaints/environmental complaints cases?
does anyone know about base of climate indexes such as de Martonne, Emberger, Koppen and ......? How to derive the formula, the assumptions and conditions that have been considered for each of them?
Thank you
Hello
Does anyone have any paper that is set on the drought spi index and software gis and withThe data relating to the years after 2000.
Thanks
National Water Document (NWD) of Iran was prepared more than 2 decades ago. NWD is a basis of set aside irrigation water to farmers now and we want to know it is accurate or not (Dose it change!)? Is it necessary to revise it?
Conference Paper Comparison of ETo values in National Water document with mea...
I have come across studies attempting to predict future dam water levels (in Nigeria and Pakistan), using different approaches (artificial neural networks, SWAT model). I am interested in developing a tool that would use readily-available climatic data (mainly precipitation, evaporation and temperature) to conduct analysis of variance and ultimately predict water levels for a given reservoir/catchment.
Why in recent years, fishermen in southern Taiwan
Wait mullet migration?
I need to know the 13C and 15N stable isotope signature of the freshwater phytoplankton community in my system (a slightly eutrophic reservoir). Is it possible to just use size fractionation plus acidification or settling (to exclude inorganic carbon such as silt)? What mesh size range is the most ideal for retrieving freshwater phytoplankton fraction?
Can anybody suggest me a reference in which i can find LJ Characteristic length for Limonene ?LJ
Because, when I poured the more KNO3 in water, I saw the more COD amount?
Actually I am going to research on drought monitoring in Bangladesh and I want to use MODIS tool. But I do not have an idea how to use that. Can anyone help me and show me some guidelines? Thanks in advance.
Preferably, pressure data for Fossolo Water Network.
What are the standards for anions in water for irrigation? Can you recommend any paper? Thank you.
i am unable get this reference regarding the above question if anybody have it please forward me.
Doneen LD (1964) Notes on water quality in agriculture. Davis: Water Science and
Engineering, University of California
Thank you in advance.
please i want all the important papers which study water quality including isotope and chemical quality or microbiology for the uae and especially Alhayer area
I am modelling a 75000 sq km watershed with no in situ measurements for hydro-meteorological data so i depending on data sets that i downloaded from NCDC website. After clipping the data to my study area, i have 112 station but it is not possible for me to analyse station by station data due to time constraint. The resolution of the data is 0.3125* Lat by 0.409* long
In the 1940s a British scientist by name of Beauchamp located a fixed sampling station for physicochemical parameters 5 km north-east of Nkhata Bay in the northern offshore waters of Lake Malawi. The lake is about 400 metres deep at that Beauchamp's sampling station, but no details were given on why that location was considered representative of the whole lake. I'm intending to do my sampling at that same location, as several years have lapsed after Beauchamp did his work and temporal changes may have occurred since then, but in absence of clear reasons why that one location was considered representative I tend to hesitate.
NOM removal from surface waters to produce drinking water is currently one of the most exciting topic in water science. However, confident monitoring of the physico-chemical properties on real streams uses to be a big analytical challenge. How to prepare a good model solution with known concentration of organic matter (e.g. TOC) still closely resembling the properties of real surface waters?
With the help of Correlation we can predict the amount of GHG emissions.
I need to prepare calibration curve for OH-PAHs metabolites measurement in the range of ng/l by using GC/MS; what is the best solvent for the preparation of standard solutions? should this solvent be dried? how can i dried the proposed solvent if i had to use dried solvent? and finally what measures do you suggest to minimize extra solvent use?
I am working on designing an irrigation management scheme for Tylosema esculentum.
Can anybody explain how we decide the sample size required to determine water content against specification limit?
For example: If my specification limit for water content is NMT 8.0%w/w, then how much sample quantity should I take for analysis?
The concentration of the preservative solution can be very high if soil solution volume collected is very low. In the case of a strong acid solution, it can affect biogeochemical processes in the sample.
There are several DOM samples derived from agricultural soils. The concentration, SUVA254 and HIX were determined. However, SUVA254 inversely related to HIX (P<0.001, n=28). It was reported that SUVA254 has been used as a surrogate measurement for DOC aromaticity (Weishaar, J. L., et al., 2003), meanwhile, when the degree of aromaticity of DOM increases, the HIX increases (Huguet, A., et al., 2009). Then I am confused.
The HIX of samples from soils treated by organic manure for long-term were about 1, and about 5 for soils as a control. Is it possible or reasonable? The samples from the organic manure had been diluted about 10 times in the HIX determination for the higher DOC concentration compared with the control.
By adopting good water management practices (by reducing the duty of water for cultivation) definitely you can achieve this.
As we known, in the exponential growth stage algal growth can be explained by an exponential equation. However, when algae cells in the culture system are not in the exponential growth stage and instead in the stationary stage or death stage, how can we calculate the growth rate?
I assume the answer is a valid rule for all volatilizable fluids?
I would appreciate your kind explanations.
I need a DNA extraction method from anaerobic water sample. I tried different commercial kits and CTAB method but none is working for this. Is there any special method that can be used for DNA extraction?
Thanks in advance.
I was wondering if it might be better for the determination of soluble salts from a soil to prepare a saturated soil paste and dilute it by 5 rather than prepare a 1:5 dilute water extract. A dilution of the soil paste would enable a smaller soil sample and yet the result of the existing ions would be in theory the same while the dilute 1:5 water extract would dissolve more ions because there is excessive water in direct contact with the soil.
What it is your opinion?
There are many methods for analysis of organic contaminants in drinking water. Most of organochlorine pesticides, acidic herbicides, carbamates and PAHs are mostly not detected. I already analyzed chlorine disinfection by-products like THMs, HAAs and HANs. So i want to know if there are any other organic compounds known to be detected in drinking water?
I have found different Reynold number values to separate the laminar and turbulent flow regimes. For example French, R.H., mentioned in 'Open-Channel Hydraulics that it is laminar flow if Re is less than 500 and turbulent for Re greater than 12500. In another text 'Experiments in Hydraulic Engineering' by Singh, S. mentioned that if Re is less than 500 it is laminar flow and turbulent for Re greater than 2000. Similarly I have found variation in different other texts as well. What value should we take as correct? And why are there so many different ranges there?
Chloral hydrate is chlorine disinfection by-product
Is there any simple method to estimate acetate and sulfur in water?
HAAs are chlorine disinfection byproduct
I am interested in finding new approaches to saltless softening.