3 More Islands That AREN'T Actually Islands

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Today we revisit the topic of island biogeography to learn about some more isolated environments, each with their own collection of unique animals as a result.

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Sources:

*I actually couldn't post all my sources in the description (there's a 5000 character limit), so check out my twitter post to see them all!

[מ.מ-הד]

One of the most common species you can find under the Dinaric Alps, is the PMA-3 from the landmine genus.

[ShihammeDarc]

I find watching these videos fascinating, whenever you start explaining something new I am like "Hey this sounds like this process I learned in a previous video". Love the gradual increase in my knowledge.

[Jururuca]

Here in Brazil, there is an island called Ilha da Queimada Grande, aka Ilha das Cobras/snake island. After the sea level rose, the snakes that lived there became isolated. Due to the lack of food, they decreased in size but also developed a super toxic poison. As the food was limited to small birds, the snakes had to develop a very strong venom that quickly killed the birds before they flew away. You can look this.

[MrWillcapone]

Always fun to find more videos like this on Madagascar. We natives know of it, not enough people in the world do, but it's a pretty special place in more ways than one. Especially from a biogeographical perspective.

[papajoe]

Great video, greetings from Slovenia, where the olms are called "human fish" or človeška ribica.

[malachimusclerat]

it's been a lot of fun watching this channel grow and change over the past couple years, the more basic overview/survey style videos were nice but your own little biogeography niche is just so good

[Depipro]

This video brought back memories. As an 18-year old first student of a Slavic language, I was on a student association trip to Slovenia. Among other places, we visited the Postojna cave and were shown the olms. The guide explained to us that they keep a few individual olms in a basin in the tourist-accessible area with flash lights that you're only allowed to shine on them for a short spell at a time, and that even then, the weak ambient light around the basin is really too much, and they regularly send the displayed olms back into the dark and get new ones to the basin. Too much light will kill them, and that includes any amount of light if it lasts for more than, if I remember correctly, a month or two.

[HistoryScienceTheater]

This made me wonder if those tiny chameleons can change color or if they just stay dry-dead-leaf color their whole lives. Apparently they can slightly adjust their color to better match their environment, but they don't ever do the chameleon thing of bright displays for communication. They'll also change color as sunscreen like mini transition lenses.

[grumpytoad]

I love how you go back to previous videos in your new videos, expanding on the information you presented previously. Following your videos truly feels like a widening learning experience!

[benmcreynolds]

Yes, you should cover more "microclimate, unique ecosystem's, region's" like the Baja peninsula, or the cloud forest, the region with endless lightning ⚡, the highest elevation lake, or a jungle at the top of a giant flat rock type mountain. Etc, etc.

[jamesricherson]

I just want to say I have loved the recent videos. I love that u talk about old videos materials. Most educational YouTuber either don't build off of their own videos or they already assume u have the background knowledge needed. Instead u "built your own niche" u built up views background knowledge and then expanded on that in later videos. I also love how u explain your thought process explaining how u thought one thing and learned something different after research. Great videos and keep up the great work!

[DaveTexas]

Caelan, I would just like to say that you consistently find the most fascinating topics to discuss and you do it in a way that is both engaging and highly informative. Your videos have become my absolute favorite on YouTube.

[firokoro]

If you make a new video like this, You could talk about lake Titicaca between Peru and Bolivia, it´s the largest alpine lake in the world, and for that it is very isolated for beeing an endorrheic lake and for being in the top of the Andes mountains, it has extremely interesting examples of island effect such as adaptative radiation of killifishes and catfishes, a giant endemic frog, and an endemic flightless Grebe, check it out!

[OtterEleven]

I would love to see you put together an "Islands" playlist to keep your amazing content organized in one place 😍

[ente]

I'm glad someone made a video on our olms, one mistake that wasn't Dobličica, you highlighted Kupa river

[lewismassie]

I think I finally understand why some things get bigger but other get smaller when arriving at islands.
Something like [size of animal] ∝ [productivity of region]

So when the blue whales arrive at the shallow waters which are much smaller they are pressured to shrink in size.
But the giant chamelons have much larger ranges than before on Madagascar so they grow bigger.

[filipleko]

Just a correction, you highlighted the Kupa river in Croatia when talking about Dobličica stream in Slovenia, other than that, great video representing my and other SE European countries' wealth in cave biodiversity

[Tehom]

I love that TierZoo is so influential that evolution is now called "specs into this niche".

[bjarkiengelsson]

The idea of a "one giant cave feeding species to other caves" is terrifying on a level I have never thought of before, yet at the same time, my mind is telling me it must be explored. Just not by me!!

[nenenindonu]

There are Islands then there are Islandsn't