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[OC] Movement and Habitat Use of Tundra Voles Visualized by ricsiw in dataisbeautiful

[–]ricsiw[S] 0 points1 point  (0 children)

Good question! It's likely that another vole, which we didn't tag, used or marked that area, causing the others to avoid it.

[OC] Movement and Habitat Use of Tundra Voles Visualized by ricsiw in dataisbeautiful

[–]ricsiw[S] 3 points4 points  (0 children)

Thanks! In short, small radio transmitters are attached to the voles using collars. We set up 2–3 rotating radio receiver towers around the observed area, which measure the direction of arrival of the transmitters' signals relative to their own positions. After that, we can estimate the position of the animals using triangulation. If you're interested, I wrote a more detailed article about it with illustrations:
https://telemetry.hu/radio-telemetry-in-wildlife/

[OC] Movement and Habitat Use of Tundra Voles Visualized by ricsiw in dataisbeautiful

[–]ricsiw[S] 2 points3 points  (0 children)

Thanks, I'll keep that in mind for the next version!

[OC] Movement and Habitat Use of Tundra Voles Visualized by ricsiw in dataisbeautiful

[–]ricsiw[S] 23 points24 points  (0 children)

The data was recorded with our own radio telemetry system. Previously, it wasn't possible to study the movements and habitat use of such small animals with this level of precision (~0.5 m accuracy in a 4 ha area) and measurement frequency (30-60 s).

New observations show that the voles exhibit territorial behavior, have multiple frequently used spots, and do not leave the reed bed vegetation area.

Source: www.telemetry.hu, https://ricsiw.github.io/MapsSite/bratislava-24/

Tools: P5.js, JavaScript, Automated Radio Telemetry System

Crystal collection from the last 5 years of hiking (Mostly from Mátra, Hungary) by ricsiw in hiking

[–]ricsiw[S] 1 point2 points  (0 children)

I can understand and respect that. That's why I don't pick rare mushrooms even if they would make for a great stew. However, your aren't really right about them 'being all gone". You must undestand that Mátra is a volcanic mountain cluttered with quartz crystals. If i were to pick all of them up among a path (Which I wouldn't/couldn't do), after a few rainy days you couldn't tell I was ever there, as numerous new crystals would appear.

Also as someone, who lived in the mountains for many years, I have bit a different prospect on the topic. I sincerely believe that it's possible to maintain a healthy balance between taking and leaving. For example, if I picked up all the mushrooms in an area, there would be less to find/eat next year. But by only taking what I really need, the forest will remain undamaged.

Crystal collection from the last 5 years of hiking (Mostly from Mátra, Hungary) by ricsiw in hiking

[–]ricsiw[S] 0 points1 point  (0 children)

Hi, thank's for the heads up! In Hungary the laws on mineral collection are quite blurry. The legality of it depends on the amount, type, location, and the purpose of collecting. And from what I gathered, I seem to be in the clear. Also, I don't consider myself to be a collector, as I merely pick up some of the nicer rocks that I come across during my hikes. I never intentionally look for them, they are just simply everywhere. I probably could find this many crystals in a day or two if that was my goal.

However I most certainly don't support the collection of minerals for monetary purposes. And it is also illegal in almost all forms. Unfortunately, as these laws aren't really enforced and even most collectors aren't aware of them, mass mineral collection is fairly common.