- Ferdous Ahmed added an answer:What is the physical evidence of the impact of global warming and climate change on forests?
There are too many studies have been done so far. The vast majority of these are based on the scenarios. Really need to wait long time that to see the effects of climate change. But we can also predict in shorter by assessing changing of natural ecosystem composition and health. So, is there any strong physical evidence (scientifical study) related this topic?
Hope this will help a little....................
- Alan P Dupuis II added an answer:Can FTA classic cards be used for the field sampling and long term preservation of RNA viruses?
I wish to know if anyone has experience with the use of FTA cards for the collection, safe transport, and preservation of rabies samples.
FTA cards can be used for preservation of RNA viruses. Numerous recent publications out of Australia demonstrate their utility in the detection of arboviruses (West Nile, Ross River, etc.) See as an example:
Exploiting mosquito sugar feeding to detect mosquito-borne pathogens by Hall-Mendelin et al. PNAS vol. 107 no. 25Following
- Ron S Mahabir added an answer:Is anyone familiar with point (or other disaggregated datasets) on water quality, global or at least for Africa?
It would be great if such a data is collected and available for scientists. Even better if it is updated regularly.
Thanks in advance,
Thanks Andrew, that's an awesome site.Following
- Dr. Abd Elmoniem Ahmed Elzain added an answer:What processes are involved in the analysis of radon concentration by the deployment of alpha track detectors?
Are the track detectors reusable after analysis?
Does anyone have idea of the laboratory where the analysis can be carried out?
Sorry I mean NTDs or SSNTDs.Following
- Mohamed Abd El-Aal added an answer:Can anyone suggested a program to deduce the relationship between soil parameters and plant species in their habitat?In my work, I study the habitat of certain dominated plants. I carried out a soil analysis and the associated species, but the results of the soil analysis is a very large table. How do I therefore explain the correlation between plants and soil in my analysis?
thank yo very much Grace Solomon-WisdomFollowing
- Sachin Patil added an answer:Which is better, saturated soil paste or dilute water extract ?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?
Here is one more question in this line.
Will EC measured of saturation extract (soil solution) ECe exactly match with EC measured in saturated paste ECsp (Measurement in soil paste by dipping electrode)?
- Arezoo Dadrasnia added an answer:How to calculate the mean cell residence time (MSRT) in laboratory experiment?
I am using bacteria for remediation of oil from water for a period of 40 days (in laboratory), so how can I calculate MCRT by mass balance?
Thanks for your guidance. How about the first order kinetic model..can I use this model or should be pseudo-order zero reaction? Are they different..Following
- Chaozhi Pan added an answer:How can we examine the effect of pH on aluminum species distribution in coagulation?
To examine the effect of pH on aluminum species distribution in coagulation, synthetic water containing 5×10-4 mol/L NaHCO3 and NaNO3 in distilled water is prepared for control experiments. The final solution contains 2×10-4 mol Al/L which is the common dosage in practice. The solution isanalyzed subsequently by ferron assay after coagulants are added under rapid stirring at 120 rpm for 2 min.
This method is given by several researchers , but because of elapsed time and the fact that the ferron test is carried out in a buffered solution at around pH 5, can the results of this method be relevant to the species formed during an actual coagulation test with natural water? what about the effect of AL(OH)3 precipitation which is formed right after adding alum coagulant between pH 6 and 7?
I think you could refer to the aquatic chemistry textbook to find the constant. At least you could judge the predominant species in your artificial system.Following
- Pablo Rodríguez-González added an answer:What is the best way to determine Tributyltin in seawater using LCMSMS?
My team and I are working on a method to determine the concentration of TBT in seawater. We tried to directly inject the filtered sample in seawater using 2% Formic Acid in Water and 2% Formic Acid inMethanol as A and B respectively. the problem that we're facing is that we can't get linearity with increasing concentration.
we also believe that our sample preparation are not exactly good enough. we are trying to avoid SPE method though. Can any one share their opinion on this.
Thank you. I really appreciate any help/opinion/advise
My opinión is that LC-MS methods for TBT determination in waters is quite challenging, as I have serious doubts that this technique can reach the detection limits required for a proper TBT monitorization.
Please be aware that the European Union Environmental Quality Standard for TBT in surface waters is 0.2 ng/L and that the recommended LOQ is 0.06 ng/L. From my experience such a low level can only be achieved by using Gas chromatograhy coupled to ICP-MS or by GC-EI-MSMS after a high preconcentration of the sample..
If you use GC you will need to apply a derivatization step which can be easily carried out with Sodium tetraethylborate and a liquid-liquid extraction. Both steps can be done simultaneiously in five minutes. Also, the application of Isotope Dilution Mass Spectrometry is highly recommended to correct for all posible sources of error.
Hope this helps
- Harry ten Brink added an answer:Carbon Content in Particulate Matters ?
How to calculate the different forms of carbon (EC, OC, BC) from total blackness of particulate matter?
Total (?) blackness\
Do you mean there is also colored desert dust in your sample?
Summary: blackness is a measure for so-called Black Carbon
EC / OC is determined in a completely different and much more expensive approachFollowing
- Mohammed Hosny Ibrahim added an answer:Can someone tell me of any new and important Papers and journals about UAE water quality in Al-Hayer area and gulf countries ?
some papers and journals which are more acurate
thank you for your helpFollowing
- Leigh Benson added an answer:Are HOBO Pendant Data Loggers ok for wetland monitoring?
I would like to monitor water quality parameters in wetland systems for an extended period over several sites. Is anyone using these? how have they been performing in the field? I would like to log data every hour and download data approx. every three months depending on access. Is there a similar waterproof data logger I can use? I have been using micro divers for depth, temp and conductivity which are good but a bit expensive. in addition to these I would like to measure pH, salinity, DO, TDS, turbidity, Nitrates, Phosphates and light.
Thanks Nathan they do seem to be an cost effective tool.Following
- Sarwan Kumar Dubey added an answer:Does anyone know how to calculate "field workability" on a daily basis?
We have daily precipitation information. Can you assume that some soil type's dryoff at .10" per hour and other soils dry at a slower rate. If you know the time of the rainfall in a field then is it a matter of hours of drying until the field is dry enough to drive on?
Hi Harvey Freese; Attached link may be helpful to you. RegardsFollowing
- Taratisio Ndwiga added an answer:Does anybody know of studies investigating the effect of garbage dumpsites on the migratory (movement) habits of large carnivores?
Several studies have investigated the influence of garbage dumpsites on the migratory patterns of birds. For example studies carried out in Spain showed a great increase in the number of storks that remain in Spain feeding on rubbish dumps during their wintering periods, instead of moving to their traditional winter quarters in Africa.
I can’t find anything similar for (large) carnivores. This may also be due to the fact that the majority of the large carnivores are territorial and do not really migrate...
A similar case among carnivores would be if polar bears would remain on shore around garbage dumpsites all year round instead of moving back onto the ice as the winter approaches and the sea freezes.
Look at this article: www.nps.gov/yell/planyourvisit/upload/RI_2014_10_Wildlife.pdf and www.researchgate.net/publication/229925937_Effects_of_an_open_refuse_pit_on_space_use_patterns_of_spotted_hyenasFollowing
- Sarah Ali added an answer:Is the Lutron 4 in 1 Environment Meter (Airflow, Temp, Light, Humidity) LM8000 effective for assessing microclimatic impacts of urban tree cover?
Does anyone have experience using it for such similar studies?
Is the device sufficient to carry out the work?
Thank you for your reply, Mr. RatemoFollowing
- Jort Hammer added an answer:How I can measure biosurfactants (type and amount) in oily wastewater?Please introduce instrumental methods.
Well dependent on what surfactants you are working with you can use a HPLC with a C18 column and a detector such as an MS. This allows you to detect most surfactants, also at low concentrations. However, you can also use other detectors like FLU for some surfactants, or ELSD.Following
- Aníbal Gusso added an answer:How to calculate "Air temperature" from "land surface temperature"?Air temperature from LST (day and night).
Hi Miss Sally,
In situ measurements for several regions, when temperature is above zero, we can observe that this difference is usually 3oC at night. I mean surface temperature is 3oC below air temperature at the meteorological station (1,5m). However, during the day, surface temperature is higher than air temperature but it depends highgly on latent and sensible heat fluxes. Specially due to surface coverage, i.e. vegetation structure, soil moisture etc.
- Priscilla ndubuisi guimaraes added an answer:Is there an epidemiological study that investigates the impact of lead on the health of villagers drinking water from a well contaminated by it?
An epidemiological study that shows the effect of drinking water from a well that has been contaminated with lead from nearby chemical works.
Thank you allFollowing
- Pavel Ozerski added an answer:How can we estimate the tolerance range of any vertebrate species towards human disturbances in natural environmental conditions?
Please suggest any published work addressing the same question. Personal opinions are also invited.
Maybe my answer will seem to be too "theoretical" but... The term "tolerance" should be applied to a response of the biosystem to ONE environmental factor but the anthropogenic disturbance is a big COMPLEX of a lot of factors. I think, generally you need to get information (results of field observations and maybe also laboratory experiments) about the effect of different combinations of different values of different but known factors and then use multidimensional statistics e.g. MANOVA. Sorry if my answer will be useless but your question is too general to find particular answers.Following
- Sarwan Kumar Dubey added an answer:Traditional vs integrated waste management system…who’s the winner in your country?
Traditional waste management systems is based on landfill of waste (often non-compliant sites with environmental regulations) and mixed waste collection with poor facilities for recycling and waste recovery. On the other hand, the integrated waste management systems are based on separate collection, 3R policy (reduce ,reuse, recycle) and energy recovery. Which systems prevail in your country? And what are the proper solutions in order to provide the transition to an integrated waste management system?
Of Course Traditional one in my country India. As integrated waste management needs lot of infrastructure and political will and commitment. Although in Metros big cities solid waste is being managed in integrated way where as more than 70% of population is still living in villages and towns where integrated management approach is still to be introduced. We are forwarding towards integrated management of solid waste very very fast and may be within coming five years scene will change. My Firm believe.Following
- Ali Asghar Moshtaghie added an answer:How does one collect rainwater for examine pH and solutes? Is there a protocol, limit area, specific time or instruments?
I need to know about pH and other solutes for studies with acid rain and your effects in arid and semi arid places.
Dear Sara you may interested to measure elments concentration in rainwater you should be care of contamination.Simply by puting a funel in to preacid washed glass ware such as beaker or erlen and collect rainwater .You may centrifuge it first and do your experiment.Filter paper may already contaminated with metals and make your analysis more difficult.Following
- Adam Szewczyk added an answer:How to calculate the climate comfort index?
I am working on ecotourism in Maharashtra and in this regard I want to find out climate comfort zone and to use climate comfort index. How to calculate it?
Just do not forget that Eskimos may not find 'comfort' zone of climate in central Africa really comfortable like for Africans and vice versa. Humans, like bear species or any other animal species, are adapted to climate by many generations.Following
- Grace Solomon-Wisdom added an answer:What are the land management and environmental factors that must be considered in site selection for Abattoir construction in sub saharan Africa?An ongoing study on the location of abattoirs in selected towns in West and Central Africa shows a pattern of locating them adjacent to creeks and other water bodies for ease in the discharge of the meat production waste, mostly untreated, into receiving water bodies. This is a serious land management and health issue.
Thanks Iyenemi. It's a great project to embark on. Tremendously useful. Best wishes with your survey.Following
- DJEDDOU Messaoud added an answer:What collection system should be more efficient in a rural mountain region? “Door to door” or through collection points ?
While I was studying the illegal dumping issue in rural areas of Neamt County (Romania) I noticed that type of waste collection services may influence the behavior of inhabitants regarding the waste disposal. Frequently, the linear morphology of villages (built-up areas) along the rivers and tributaries favor the waste dumping on their banks near the households. In case the localities are served by sanitation services it seems that “ door to door” system is more effective than collection points. In the latter case the proper location of these points within a village is crucial in order to avoid the illegal dumping. Also, there can be a combination between these two systems..such as “door to door” system for mixed wastes and collection point for recyclables. What is your opinion about these collection systems ..? Which of those should be more effective in a mountain region?
The management of waste in communities along mountains should, First, it's based on environmental education of of citizens.
Introduce the economic earnings in waste cotect can change the behavior of citizens.
I remember the German experence at Aldi, "If you forgive the empty bottles plastics bottles
used for drinks, and we will refund the price of the bottles at the new bottles.
For a good collection points we must build this idea :
Environmental Education + economy earnings = efficiencyFollowing
- Heather M Coleman added an answer:What are some current Decision Support Systems or other tools which can assist in the land use decision making process?I am working on a literature review of current DSS or tools used in land use decision making. So I'm keen to hear about any DSS/tools used or developed around the world to help with making land use decisions, focusing on economics, environmental benefits/risks, social benefits/risks, cultural factors, etc.
I teach Marxan courses internationally - it's a great tool for providing multiple site selection options to meet your targets (eg protect 20% of this habitat type) while avoiding socio-economically valuable areas - http://pacmara.org/events-workshops/introduction-to-marxan.
We also published this booklet a few years ago comparing a number of tools often used for marine planning (but most are just as applicable terrestrially too) - http://pacmara.org/dstguide.
I hope that helps!
- Pierluigi De Rosa added an answer:How can I automatically define bankfull limits from high resolution LiDAR DEM?
I'm looking for an approach to automatically define the bankfull limits of a river channel having an High resolution DEM.
I used the approach proposed by: Williams, Garnett P. "Bank‐full discharge of rivers." Water resources research 14.6 (1978): 1141-1154. as could be found in my paper but I'm looking for other approach coupling also other type of data or approach.
The plugin is still in development but you can find the version in development here:
Try and let me know
- Katheem Kiyasudeen added an answer:Can I do phosphorous analysis by Molybdovanadate acid persulfate digestion method for my powder sample?
Usually water or wastewater is analysed using Molybdovanadate acid persulfate digestion. Can I apply this protocol for my solid sample?. I have the HACH kit for phosphorous analysis. Kindly suggest.
Thank you so much again. Even I'm in need of that book. If can send me as well. Really appreciate all your suggestions.Following
- Fikrat Hassan added an answer:Does anyone know of a paper discussing nutrient starvation in an ecosystem?I am looking for a paper which discusses the potential negative effects of extreme nutrient limitation. The majority of the literature focuses solely on enrichment or excessive loading of nutrients. While eutrophication can be harmful for ecosystems, I assume that nutrient starvation could also be bad, unless it is an adapted ultra oligotrophic system. Just wondering if anyone has stumbled upon any papers.
may be the following paper useful for you:
Dataset: Laboratory study on the effects of nutrient enrichment on a phytoplankton population in Sawa Lake, Iraq
Fikrat M Hassan, Hussein A Al-Saadi, Foad M AlkamFollowing
- Mohammad Reza Mansouri Daneshvar added an answer:What is the relationship between SIA (Social Impact Assessment) and SEA (Strategic Environmental Assessment) ?Dr. Bashkim Mal Lushaj: SIA is defined as an activity designed to identify and predict the impact on the biogeophysical environment and on man's health and well-being of legislative proposals, policies, programs, projects, and operational procedures, and to interpret and communicate information about the impacts and their effects(Dr. Bashkim Mal Lushaj) and SEA is a systematic decision support process, aiming to ensure that environmental and possibly other sustainability aspects are considered effectively in policy, plan and programme making. (Fischer, 2007)
In accordant to dear colleagues, SEA (Strategic Impact Assessment) is focused on the substantive and critical parts of environment (both Natural and Anthropogenic branches) which have extensive amplitude and intensive magnitude. SEA is the innovative modification of EIA (Environmental Impact Assessment) which can be included SIA (Social Impact Assessment), HIA (Health Impact Assessment), etc.Following
About Environmental Analysis
Environmental analysis is the use of analytical chemistry and other techniques to study the environment. The purpose of this is commonly to monitor and study levels of pollutants in the atmosphere, rivers and other specific settings.