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Methods in Soil Organic Matter and Biogeochemistry
Добавлен 13 июн 2017
This channel includes video introductions to common methods in soil biogeochemistry. Learn the basics of the methods used by researchers all over the world to better understand how soils function, including greenhouse gas measurement, soil fauna extraction and identification, and soil carbon measurements.
Soil Organic Matter Fractionation
An introduction to soil organic matter fractionation, a method to separate soil organic matter with different properties and turnover times.
Просмотров: 8 650
Видео
Soil Fauna: Extraction and Identification
Просмотров 20 тыс.7 лет назад
Methods to extract and identify soil fauna (e.g. nematodes and arthropods)
Free-Air CO2 Enrichment Experiments
Просмотров 7 тыс.7 лет назад
An introduction to free-Air CO2 Enrichment (FACE) experiments from around the world.
Pyrogenic Carbon in Soil: The BPCA Method
Просмотров 6067 лет назад
The BPCA method for estimating pyrogenic carbon content in soils
Soil Incubations
Просмотров 4,7 тыс.7 лет назад
Measuring effects of driving factors on soil respiration (carbon dioxide efflux)
Measuring Soil Respiration
Просмотров 12 тыс.7 лет назад
Measuring soil respiration (carbon dioxide efflux) in the field using a closed loop continuous flow system
Soil Greenhouse Gas Measurement
Просмотров 5 тыс.7 лет назад
Methods to measure nitrous oxide and methane fluxes in soils
super explanation!
WILD! I heard about CO2 Enrichment in Greenhouses, but to see it at a Feild/Forest Scale is amazing! Granted it’s for scientific data gathering, not for increased growth, but it is interesting to see the concept scaled that way. This is definitely a rabbit hole I’ll dig into!
Thanks for the video. Amazing one!
Thank you for this helpful video. I have one question, to make Sodium polytungstate solution of 1.85 density for 1000 ml water how many g of Sodium Polytungstate do you use?
Thank you for the video! I have one question. Did you base your work off literature? If so, can you provide that? Thanks!
what is the name of model used in the demo? Thanks.
So, more CO2 is better for most plant life. That's better for herbivores. Clover etc fix nitrogen. Farmers add CO2 to greenhouse spaces; they're not wrong. Missing statistics -> no evidence -> what confirmation can anyone else draw? Poor scientific disciplines, unfortunately. Rising 'average' temparatures come before rising CO2. Tiny fraction of 'warming' is from CO2 and tiny fraction of that is man made. Panic over.
Is the map with all the FACE systems somewhere available?
what was used to seal the bottom of the soil columns?
I'm not sure exactly, but it is some combination of plastic film and sealing tape. These samples on the bench top were for demonstration purposes, but depending on what you are studying, you might need to ensure an airtight seal or leave the bottom of the columns open (e.g. if you are in the field).
What gases are ideal to have in the soil? Is high CO2 good? What about high nitrogen? Etc
Thank you for the video! I have two questions: 1) How could we recycle the SPT? 2) How could we cite the procedure that you are describing here?
Thank you, Is there any chemical which can be used as a substitute for SPT?
You can use NaI (Sodium iodide)
@@TheGirlGreenGrass is it possible to use sodium hexametaphospat to replace the two chemicals?
This video was great. Kindly upload a video on Extraction, Fractionation and Characterization of Soil Organic Matter.
In a long-term soil incubation experiment for CO2 efflux analysis, how would you compensate for water lost through evaporation in the soils with your set-up? Could you take out the soils in the plastic cups from the mason jars and weigh them and top-up for the water lost? Your response will be highly appreciated.
Thanks for the pro tips!
Congrats fo the video and thank you so much! A couple of questions arise for me: how is the amount of C analyzed in each fraction? Can be used an elemental analyser for this purpose? If so, how to separate organic carbon from mineral carbon? Thanks a lot
You can separate mineral and organic carbon with the use of 2 analyses, separately. This this may lead to the need for a larger sample mass (at least 2 grams, better 5 g). So, you measure carbonates with calcimeter and determine mineral carbon (Cmin). You subtract Cmin from Ctotal, which you measure on CN analyzator by combustion at 900 °C. This is one way to get Corg.
Cheers!!.very clear
Very useful,thank u
Thank you so much!
Great overview!
Please, What is the opening size of both sieves used in the second method?
Hey, How do i analyze the difference in soil gases efflux after some treatment to soil, To learn about GHG mitigation on amending the soil.
Substrate induced respiration???
Stereo microscope. :) I have seen two videos where a stereo microscope is used, and one with a compound microscope. Soil people, what is you preference?
Binocular should result in less eye strain over time. I'm only looking for binocular or stereo myself, but would use a single eyepiece unit if I had access to one.
What is the percentage of sugar solution used in Sugar solution method?
They sink in pure water, she said they float when the density matches. So more sugar is probably better. Fill it to capacity until it doesn't dissolve anymore.
No one can make you feel better
Thank-you!
Thanks for this awesome video! Really helped me out in my research as I just started out with LiCors
What gases are ideal to have in the soil? Is high CO2 good? What about high nitrogen? Etc
Thank you for such a great video
Thank you!!!
It was extremely helpful .... Appreciate it!!!
What a donkey created that video...greenhouse gas effect doesn't exist! It was debunked years ago...
Aloha! this is great, thank you!
Aloha! Thank you
Thank you for uploading such a wonderful video!
Thanks a lot for this great video. Keep up the good work. Please upload more and very often. Thanks.
brief. comprehensive,informative and helpful
Thank you for the video tutorial. I have some questions. 1) How long(approximately) will it take to analyze 66 soil samples by your methodology? 2) Are there any possibilities to decrease used water amount in fractionation?
Hello, it has been some time since I have done the procedure, but if I recall correctly, the maximum number of samples we would process in one "batch" was about 16. Any more than that, and it is difficult to finish each step in one day. We generally took three days for the whole procedure, so it would take about 9 days in total for you. With practice, you might be able to decrease water consumption during the rinsing of the LF and the sieving, but you need to make sure you are being thorough. Also, if you do change the amount of water that ends up going to the centrifuge (or use different sized bottles), you will need to calculate the speed and time of centrifugation to separate the correct size particles using Stokes' Law (en.wikipedia.org/wiki/Stokes%27s_law). Good luck!
Wonderful, thank you! Please keep up the good work.
I realize it is kind of randomly asking but does anyone know of a good website to stream newly released tv shows online?
@Nico Draven I watch on flixzone. Just google for it =)
@Derek Titus definitely, been watching on Flixzone for since march myself :)
@Derek Titus thanks, signed up and it seems like a nice service :) I appreciate it !!
@Nico Draven no problem :D