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Timothy Spier
เข้าร่วมเมื่อ 23 ก.ค. 2014
Back Calculating with ImageJ Tutorial - LATEST VERSION
Here is the latest version of my tutorial for using ImageJ with Excel to back calculate length at age for fish. The ImageJ macro I use can be found at:
drive.google.com/file/d/1JayAszVRSvai003GU2efxTBSlC5XbDNg/view?usp=drive_link
drive.google.com/file/d/1JayAszVRSvai003GU2efxTBSlC5XbDNg/view?usp=drive_link
มุมมอง: 95
วีดีโอ
Fixing Upslope Area Tool in QGIS
มุมมอง 5238 หลายเดือนก่อน
In newer versions of QGIS, the "Upslope Area" tool does not properly run. This video shows a possible fix that has worked for me every time.
Earthworm Dissection Magnified
มุมมอง 225ปีที่แล้ว
A brief tour of the earthworm anatomy as seen at about 20x magnification.
QGIS Watershed Instructions
มุมมอง 2512 ปีที่แล้ว
Step by step instructions to determine the watershed of a stream in QGIS.
UAV Demo - Wildlife Techniques 2021
มุมมอง 423 ปีที่แล้ว
Brief video showing some of the results of today's discussion concerning the use of UAVs by Wildlife Biologists.
DIY Seed Cleaners for Small Batches of Seed
มุมมอง 2823 ปีที่แล้ว
Here are a couple of "fan based" seed cleaners that I use when I am harvesting seed from my butterfly garden.
BIO 101 Lecture 22 - Human Impacts (part 2)
มุมมอง 1114 ปีที่แล้ว
Brief discussion of species extinction
BIO 101 Lecture 21b - Human Impacts (Climate Models)
มุมมอง 644 ปีที่แล้ว
What do the climate models tell us?
BIO 101 Lecture 21 - Human Impacts part 1
มุมมอง 1114 ปีที่แล้ว
The science and data concerning climate change.
BIO 101 Lecture 20b - Community Ecology part 2
มุมมอง 914 ปีที่แล้ว
Brief description of community structure.
BIO 101 Lecture 20a - Community Ecology part 1
มุมมอง 1834 ปีที่แล้ว
Brief introduction into different interspecific interactions.
BIO 101 Lecture 15 - Evolution of COVID
มุมมอง 1444 ปีที่แล้ว
Some background on what makes COVID-19 unique.
BIO 101 Lecture 14 - History of Life on Earth
มุมมอง 1624 ปีที่แล้ว
BIO 101 Lecture 14 - History of Life on Earth
BIO 101 Lecture 12b - Evidence for Evolution
มุมมอง 1734 ปีที่แล้ว
BIO 101 Lecture 12b - Evidence for Evolution
BIO 101 Lecture 11 - transgenic organisms
มุมมอง 1734 ปีที่แล้ว
BIO 101 Lecture 11 - transgenic organisms
BIO 101 Lecture 10 - genetic screening and analysis
มุมมอง 1244 ปีที่แล้ว
BIO 101 Lecture 10 - genetic screening and analysis
BIO 101 Lecture 09c - Protein Synthesis practice
มุมมอง 1024 ปีที่แล้ว
BIO 101 Lecture 09c - Protein Synthesis practice
BIO 101 Lecture 09b - Protein Synthesis (part 2)
มุมมอง 1504 ปีที่แล้ว
BIO 101 Lecture 09b - Protein Synthesis (part 2)
BIO 101 Lecture 09a - protein synthesis (part 1)
มุมมอง 1994 ปีที่แล้ว
BIO 101 Lecture 09a - protein synthesis (part 1)
BIO 101 Lecture 08c - New Cancer Treatments
มุมมอง 684 ปีที่แล้ว
BIO 101 Lecture 08c - New Cancer Treatments
BIO 101 Lecture 08b - Intro to Human Immune System (part 2)
มุมมอง 1124 ปีที่แล้ว
BIO 101 Lecture 08b - Intro to Human Immune System (part 2)
BIO 101 Lecture 08a - Intro to Human Immune System (part 1)
มุมมอง 1594 ปีที่แล้ว
BIO 101 Lecture 08a - Intro to Human Immune System (part 1)
BIO 101 Lecture 07b - Cellular Division and DNA Replication part 2
มุมมอง 994 ปีที่แล้ว
BIO 101 Lecture 07b - Cellular Division and DNA Replication part 2
BIO 101 Lecture 07a - Cellular Division and DNA Replication part 1
มุมมอง 2384 ปีที่แล้ว
BIO 101 Lecture 07a - Cellular Division and DNA Replication part 1
Wow
Thank you from India
Thanks so much. How can I find your macro? Is it available to you?
how to export .lyr to shp if we dont have the master shp anymore??
Where did you get the values for a and b as it doesn't correspond to the graph
thx, that's really helpful
Awesome explanation!
Sir kindly send me your gmail ID
thanks sir
Thank you so much
Please make video on how to perform this on excel
Thanks Timothy, this was helpful.
prof, could please explain about catch curve analysis
Oooh woow....very well explained..Thank you sir❤
Good lecture🤗
thanks lot for the explanation..really helpful🥰
can we use the von bertalanffy in a reverse manner. like predict age by length
thank you this is verrrrry helpful!!!1
Thanks! Very easy to understand
Can I use the data you used here Sir for exercises? If so please give me the link for the data. Thank you.
Thank you❤️😍 From Sri Lanka 🇱🇰🖐️🤩
Hi sir Please do you have soft copy
Excellent video i have ever seen. Its request from my side to make complete tutorials on imagJ if possible please . I am ur subscriber plzzz
Why all the down votes? This concisely explains how to create the line. Nice job.
Thank you. It was very helpful
What a nice explanation!
What, no downstream blocking net?
Hey Timothy! I used your macro file for my PhD Thesis and am writing my first paper in this topic. I want to cite this correctly, it's the least I can do for so much help! Can you help with that? Obviously, I cannot cite a youtube video :D Have you published anything using this macro? Thanks a lot in advance!
Nah, we worked up a bunch of eggs and it didn't show anything so nothing published out of that. I appreciate you citing this, maybe you could just say personal communication? Good luck with your work!
From graph how do we calculate base b= perpendicular/base
How to calculate calculated weight in kn = w/w(calculated weight)
sir do u have books about fish biology
Peterson method please
very good the explanation about growth with VonBertalanffy model
God bless you Professor
Very helpfull sir!
Like your video sir
Thank you!
is it possible to put a worked excel example up of how you get K and t0 please?
Sir can you tell me that for study of parasite in fishes of perticular geographical area required animal ethical committee permission
Omg, you saved my life! The manual is too confusing, I don't know how anyone could learn from it. But thank you for the easy tutorial!!!
Hello! At the moment I try to solve the ecuation to estimate the lenght of an individual, would I be right to use the average lenght at birth of the species as t0?
nice but i think im going to make the screen a bit longer and put the sawzall side up at an angle so the rocks and chunks fall off the other side no cleaning the screen
Thanks so much for explaining the von Bertalanffy curve, much appreciated
This lesson is very helpful teacher. Thank you so much.
Hi sir, i did a sampling on april & november 2019 about anchovies. I got the b value for sampling on april 3.034 and on november 2.504. It is possible?
yes it will vary from time to time depending on the sample you took
yes it will vary from time to time depending on the sample you took
useful things thank you
Thank you for very helpful lectures.Great summary of some of the central aspects of limnology!
NYC sir
EXCELENT THANKS
Thats a little scary. Any datta on the flight logs to explain why it lost power all of the sudden?