March 2025 – See Animals Wild

March 26, 2025March 25, 2025

A natural reservoir that formed in the Peruvian Andes behind a glacier, in 1941 broke its bank and killed thousands – climate change is making a repeat more likely

It is estimated that 15 million people live in areas which would be flooded, should glacial lakes collapse. As global warming increases the temperatures in these areas, these glacial lake collapses are only going to get more common.

In 1941, lake Palcacocha (which sits high in the Cordillera Blanca range of the Peruvian Andes) broke its banks. The city of Huaraz lies beneath it, and when it collapsed 10 million cubic meters of water was dropped on the city. Apart from changing the areas geography permanently, at least 1800 people died, and possibly as high as 4500.

We are making the collapse of these glacial lakes more likely as time goes by, by our increasing of carbon in the atmosphere – clearly it is not only low lying settlements which are in danger from climate related flooding.

March 25, 2025March 25, 2025

A Ugandan river has turned poisonous

There is a lot of wildlife that lives in rivers, as well as most species having to drink regularly

The Nyamwammba river, which runs through the Rwenzori mountains – in central western Uganda, having been flooding in an extreme way in recent years. This is enough of a problem, as there are many settlements among other things, that lie along the rivers course.

However, there is a bigger problem. Along the river course, are copper tailing pools from an old Canadian mining operation. However, these are being flooded and eroded with increasing frequency. Why is this a problem? Because these elements are bad for wildlife and human alike.

Having been washed into the river, they have found that they have infected most of the water supply and soil of the valley, with these deadly heavy metals. The cancer rates in populations living near these pools are far higher than normal, and there is a fear amongst scientists, that as flooding increases due to climate change, the heavy metal pollution will get worse, and therefore also the people affected.

Can the company be charged for the clean-up? Perhaps, at the time of the mines creation Uganda did not have strict enough environmental rules, though one would hope that a credible company would not have to be forced to clean up after themselves.

March 3, 2025February 26, 2025

Shrinking trees, and tuskless elephants – what other effects are humans having?

Humans are causing trees to grow smaller, as big trees are more likely to be harvested. In the same way, elephants are being born in some reserves without their tusks, as this means that they are less likely to be hunted (and therefore, those born without tusks tend to survive better and have more young).

Snails are developing lighter shells, in order to cope with heat better, and swallows are developing shorter wings as this is easier to avoid being hit by cars, are just some of the large number of effects that humans are having on the natural world.

The problem is if these impacts mean that the species is less capable of surviving (do tuskless elephants live as long?). Are humans becoming the primary threat for many species?

If so, we need to change that and fast.

March 2, 2025February 26, 2025

Sumatra is finding that building bridges over roads is much cheaper than elsewhere

This seems a very cheap and simple solution to roads, at least for primates. A standard motorway bridge in the UK can cost well over $1million (estimates suggest at least £890,000). This compares to a canopy bridge costing $5000 if even that much.

Each male Sumatran Orangutan needs 15 square miles, while females need at least 3 square miles. Therefore in order to have a significant population in an area of say 1000 individuals, you are talking about needing almost 10,000 square miles of rainforest that is connected. It is highly likely, in a 100 by 100 square mile block that there will be some roads crossing it. Therefore, these simple methods for connecting forest blocks could become more and more important.

It should be noted, that while this works for primates in areas like this, it will not help the Sumatran elephants, or rhino or tigers, which share some of these forests. Still, it might mean that larger bridges for other animals to cross could be less common, while still allowing primates to cross with ease?

March 1, 2025February 26, 2025

Scientists dissect the worlds rarest whale – the Spade-toothed beaked whale for clues on it (almost nothing is known about it)

researchers conduct autopsy on stranded spade beaked whale CC BY-SA 3.0

I wrote about this find (click here to read the original article) as one of just 7 of this species (spade-toothed beaked whale) to have washed ashore, it was too important an opportunity to find out something about this species in the wild.

Whales do eventually sink to the ocean floor, so it is quite difficult to know how many spade toothed whales there are left in the world (as we only encounter those which wash up on shore). They are thought to be very rare, but this is just conjecture. This is because, having been timed, holding breath for 87 minutes (and theorized that they might be able to last more than 2 hours), they would only have to surface perhaps 15 times in a 24 hour period. Furthermore, given their incredibly low profile in the water, they are likely capable of regularly coming to the surface without being particularly visible. It is true that they have been seen blowing spouts (the puff of moisture and air that signals a whales breath), but given their low profile, perhaps they are capable of exhaling in a less obvious way.

This one in question washed ashore in Otago, on South Island of New Zealand.

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