Before humans started cutting down the forests of the UK, the pine marten was likely one of the most common carnivores in the UK. This voracious arboreal hunter is the reason that our resident squirrel is so acrobatic – these skills would likely be tested every day.
Indeed, pine martens are less widely spread in the USA which is likely one of the reasons that grey squirrels are so incapable of surviving alongside pine martens. Thus, in the UK we have this perverse situation within the UK, where the only refuge of the red squirrel (apart from small islands which can be cleared more easily) are areas of the country where pine martens also survive on.
In the UK, it has been long known that pine martens survive in Scotland. Protection of their forests must improve if we are to hold onto them for longer.
New Zealand has no native land mammals. There are mammals that swim to new Zealand, or indeed that fly there, but all the land mammals are non native. Unfortunately with no mammals there are also no predators to control, it is also unfortunately true that in most cases introduced predators take the native flightless birds far more than the non-native mammals.
There are currently thought to be millions of wallabies living free on both of New Zealand. Finally pest control have started to try to deal with these. One pest controller can kill 100 wallabies in a good night. As elsewhere, these wallabies are causing problems, causing local plants to die and get pushed towards extinction.
It is estimated that by 2025 the cost to New Zealand could be costing $84 million a year in damaged ecosystems and lost agricultural revenue.
Pablo Escobar was a drug kingpin in Columbia. Extraordinarily successful he had the money for some pretty impressive personal items including a zoo. Rather alarmingly, when Pablo Escobar’s rein over his crime and drug empire ended, his zoo was not looked after. A variety of things happened to the animals, but the hippos were largely left in the wild to their own devices.
The problem is that with vast amounts of food and no natural predators in numbers have multiplied rapidly and is currently thought to fall between 65 and 80.
Pablo Escobar was an extraordinarily successful drug Kingpin in Colombia, because of the standards law enforcement in Colombia he was able to demonstrate his well through extravagant spending without worrying if he would be challenged.
These animals cause significant damage to woodland throughout the UK. They were first introduced to Henbury park in Cheshire, but have quickly spread. Being less reliant on trees than red squirrels they have done very well though it is thought that red squirrels were not doing well anyway. A great deal of money and time has been spent trying to control their spread, as they often carry squirrel pox which kills red squirrels quickly, meaning they don’t share land for long.
Huge numbers of species have been disappearing from some or all of their original range in the wild. While there are other reasons for animals to disappear from areas, humans are usually the biggest. This is certainly the case on a micro scale. The majority of impacts of climate change has shifted the entire range for a species in one direction or another. Many mountainous species have shifted their range up hill as the planet has warmed. The problem with this shifting is that often it leaves species stuck in small areas of suitable habitat at the top of hills or mountains. Continue reading “UK extinct species and imported species – Part 1”