Pine marten roundup

For any readers who do not know what a pine marten is, the above will give you an idea. It is an arboreal predator (that is, it hunts in the trees). There are a total of 8 species of marten across the world. Historically, this was the second most common predator in the UK, with only the fox being more common.

Unfortunately, its habit of taking chickens lead to it being hunted ruthlessly. At the current time, it hangs on in Wales, and has a significant population in Scotland. In Ireland, the recovery is far further along.

In the UK, one of the reasons that we miss this little predator, is its impact on grey squirrels. Unlike the pine marten, the grey squirrel is not native to the UK, and its presence does much damage, from its impact on trees, and other plants, to the fact that it carries a disease which wipes out the reds rapidly (so they are incapable of living alongside each other). This is a species which I have followed closely, and while other matters have stopped me blogging on this species as often as I would like, it has not stopped me from reading about it, so you will find summaries of a variety of stories below.

 

 

Reintroduction project in Dartmoor: 15 pine martens were released in secret locations within Dartmoor in September. A total of 7 conservation organisations have been involved in this translocation. It is a total of around 150 years since pine martens were last in the area, but the translocated individuals are settling and slowly dispersing across the landscape.

To the right you will find a tiktok video which will give you details on this reintroduction.

@woodland_trust Pine martens are back in Dartmoor! 🎉    This conservation success story is the work of The Two Moors Pine Marten Project which we’re a partner of. 🌳    Site manager David Rickwood explains more. 📽    Learn more at 👉 twomoorspinemartens.org  @National Lottery Heritage Fund   #woodlandtrust #wildlife #britishwildlife #wildlifetok #pinemartens #dartmoor #conservation ♬ original sound - Woodland Trust

While there is no idea where the pine martens came from, they appear to be doing well, and as the video shows, are breeding. While they have not been there long, so there is little evidence yet, it is highly likely that the pine marten arrival will be bad for local grey squirrel populations (a non-native squirrel which does much damage to UK woodland). This is an area of excitment and should be followed closely.

Pine marten spotted on Longleat estate

Pine marten caught on camera trap in Longleat estate in Wiltshire. It is unclear where this individual came from, lying half way between the forest of dean and the new forest (but far from both), but it is thought it has arrived naturally. While red squirrels would not be able to reappear in this part of the country, without help, as all surrounding areas have grey squirrels, should the pine marten survive, it is likley to greatly impact the local popualtion, and create an island, into which red squirrels could eventually return.

Pine marten in the forest of dean

Pine marten were translocated from Scotland into the forest of dean, beginning in autumn of 2019, when 19 were introduced, and a further 35 joined them in the next 2 years. Last summer, there was an estimate of 60 living in the forest, which while not a big increase, it has not fallen.

While the forest of dean covers just over 200 square miles, it is thought that 60 is roughly the carrying capacity. That suggests that the pine martens in the forest of dean need roughly twice as much space as elsewhere, so time will tell if the population can grow beyond this level. Still, it seems likely that this number of pine martens should be able to eradicate the grey squirrel, or at least greatly reduce its number in the area.

The below video shows 3 cubs from around 4 years ago.

 

Pine marten in the forest of dean

Research is being done on whether pine martens can live in timber forests – which account for a lot of forest in Scotland

Some simple changes may well allow timber and pine martens to flourish alongside each other. Across 1 woodland, a number of nest boxes have been added, which appears to be helping. The plantations are also looking at letting some older trees stay standing, as these are where cavities appear, which is the pine martens natural home. This research is being carried out in the forest of Ae and around Castle O’er.

Pine martens have turned up in a London cemetery, in area of England where they have not been seen for 150 years 

The Zoological Society of London ZSL (London Zoo)  already had a project in the area with remote cameras, as it is a stronghold for the hedgehog (unfortunately, another species with a horrific decline in the last 20-30 years). It was just one (and this was in 2022, so may well be gone), but it is exciting that such a small area can house an animal like this.

The Forest of dean, is 80 miles away, which is the nearest population, so it is thought that this might have to be the result of an illegal translocation (they are being translocated, but should be done by professionals, with checks and more.

Pine marten recovery is further along, and helps understand how it will work in England, particularly in cities (not the safe zone once thought)

 Once almost extinct, for similar reasons in the UK (habitat destruction, and persecution) in 1976 they were given legal protection, and at the same time, forestry started to expand once again. The pine marten is how living in around 45% of Ireland.

The red squirrel is recovering as a result. There was a fear that grey squirrels would survive within cities, as pine martens are generally to shy to venture into even large parks within cities. However, what has been found, is that the abundance of squirrels in cities is a mirage – there are only sustained by populations outside the city, therefore, should places like the green belt around London get settled by pine martens, it is likely that the London squirrels would disappear within a few years.

Similar to elsewhere, pine martens have now also been introduced to the Lake district.

Wildcat kittens born outside captivity in Cairngorms

Wildcats are native to the UK, but have been pushed to the brink of extinction by hybridisation with native cats – which come from the wildcats from places like Israel in the middle east. As a result of this, as well as trying to remove the feral domestic cats, and their descendants, they are trying to create pockets of Scotland, which would allow these cats to recover.

The natural behaviour of a British wildcat when meeting a feral cat, is to kill it. However, as these animals become rarer, even rare breeding events, can threaten the survival of the whole species. This behaviour also means that with careful planning, we should be able to reintroduce them into other parts of the country. There are a range of other wild predators lost over the last couple of millennia – and I hope to see the others return, but it is thrilling to know that a wildcat is once again living and breeding in its native habitat of the Scottish mountains.

These wildcats are thought to be the first born wild in Scotland for 5 years, after 19 wildcats bred in the Highland wildlife park, were released into the Cairngorms national park.

Analysis has found that 1/3 of land set aside for restoration is worse than before in Australia

Large parts of Australia look like the above photo, beautiful in a rugged way, but quite useless for the survival of many of Australia species. Australia has a wide range of habitats, which means that there are many areas which need to be protected.

The problem is, according to this study, declaring an area protected appears to be having little change on what is happened.

1/3 of all land that is set aside for restoration and conservation, has got worse rather than better. Given the fact that so many species are just hanging on to existence, this could be very bad news.

In one area that was studied, the majority of the area was cleared paddock – a serious problem for the koala and grey-headed flying fox which called the area home.

In particular, the idea of this scheme is so called biodiversity offsetting – if you are to clear wildlife habitat, you protect a similar sized area elsewhere.

Continue reading “Analysis has found that 1/3 of land set aside for restoration is worse than before in Australia”

Our behaviour may be still pushing the Northern right whale to extinction – entanglements may use as much energy as rearing all young

The Northern right whale was hunted to the brink of extinction – with less than 500 left when hunting ended. To put this in perspective, only 300 Southern right whales were left when hunting stopped, it is thought that there are now 3000-4000 Southern right whales.

Now, it is true that historically the Southern right whale is thought to have numbered as 55,000-70,000 individuals, suggesting that the current population is 3-5% of historic numbers.

However, the current estimate for the Northern right whale population is 386. While has the Southern right whale population grown over 1000%, and in the same time, the northern right whale population declined?

What is different?

Continue reading “Our behaviour may be still pushing the Northern right whale to extinction – entanglements may use as much energy as rearing all young”

Australias environment could be fixed for 0.3% of GDP

Wentworth Group of concerned Scientists estimate that for just $7.3 billion a year for 30 years, most extinctions could be avoided as well as repairing soil and restoring rivers. That sounds like quite a lot? Well, invasive species cost the Australian government $24.3 billion a year now.

Recovery of some of the endangered species, could well save more than they cost to save, in reducing this invasive species bill. This would also improve agricultural output, as a result of improved soil health.

Continue reading “Australias environment could be fixed for 0.3% of GDP”

It is becoming increasingly clear: humans are responsible for the loss of mega fauna that we can see in the past

The skeleton above is the closest we can get to a real mammoth, as a result of their extinction. However, it is not the only missing large species – indeed, the elephant family alone, is thought to have around 30 extinct members. Aside from these, there are 2 known extinct species of the woolly rhino, cave lions and sabre-toothed tigers, and various species of bear, among many others.

If you go back 50,000 years, there were 57 species of megaherbivores (herbivores weighing over a ton), yet just 11 of these survive today – these include the elephant species, the rhino species the hippo and the giraffe.

Continue reading “It is becoming increasingly clear: humans are responsible for the loss of mega fauna that we can see in the past”

Currently, in the Amazon rainforest, 5 times more carbon is released from degradation than from deforestation – and still what remains continues to burn

A study, using detailed 3d surveys, found that road building, and other degradation is causing 5 times as much carbon to be released into the air, than deforestation of the Amazon.

From road building, to selective logging, fires and natural disasters, all these activities are combining to having a greater impact on carbon stocks in the Brazillian Amazon than deforestation. This huge discrepancy is not taken into account by the numbers.

This is also a problem to the world, as this carbon is being radically underestimated, which means that large quantities of our remaining carbon budget are being used up. This new survey used lidar, which gives a more accurate idea of what is left in terms of forest cover.

Read more: Currently, in the Amazon rainforest, 5 times more carbon is released from degradation than from deforestation – and still what remains continues to burn

With the addition of lidar sensors on the ISS, it is possible to scan the worlds forests more often – and given the ISS regular passing over 90% of the earths surface (in each 24 period – as while it orbits on a set path, the earth turns below it) this can be a good tool to keep an eye on the forests of the earth.

Another confirmation (as if it was needed) has been supplied by this study, showing that Indigenous territories and conservation units are both more efficient ways to protect the forest. These cover only 47.5% of the land, but contain just 9.1% of the forest clearing 2.6% of the logging and 9.6% of the fires.

Talking of fires

Fires continue to burn in the Amazon, with over 13,400 having been recorded in 2024. President Lula has called for general mobilization and Brazil has pledged to end deforestation by 2030. This is higher than during Bolsonaro’s time in office, though current cause is a drought, not human mismanagement.

Climate change is causing an increasing change in weather patterns, and reduced rainfall is changing the forests behaviour ( it should be noted, that the forest produces a not -insignificant portion of its rainfallm

Older trees are more capable of increasing growth and carbon dioxide use than young ones

Whether tropical or not, old growth forests absorb far more carbon than new trees, and can increase this

Old growth trees, have the capacity to greatly increase their growing rate, when there is a lot of carbon dioxide in the air. This has been found, in a study by the University of Birmingham. This is important, as in many places around the world, an area of destroyed natural forest, is considered to be replaceable by a similar area of planted trees, but what is clear, is that in order to merely keep up with the absorption of the original trees, several multiples more of trees need planting. What is worse, is that this is not worrying about the huge amount of carbon that is stored in the trees that are cut down, or within its roots system and the surrounding soil.

To put this in perspective, at the current time, it is estimated that a football pitch of primary forest is lost every 6 seconds.

This experiment was done, by piping extra carbon dioxide into a forest area and monitoring its growth. Unfortunately, this does reinforce the conservationist point of view, that simply planting a similar area of woodland for each bit lost, is not good enough.

The livestock lobby is fighting against lab-grown meat this is why we must not let them win

Livestock takes up roughly 20% of the worlds land, or around 50% of the worlds agricultural land. Astoundingly, around 1.3 billion people around the world are involved in the livestock industry.

The worlds remaining land wilderness, takes up just 25% of the worlds land – should we move toa system of growing meat in labs, we could almost double the amount of space for wildlife, which would allow many of the worlds endangered species to recover.

Apart form saving so much of the worlds wilderness, and wildlife, why should we do this? Well, firstly, the fact that people want things to stay as they are, is not new. Every new invention has lead to a change in the lives of many people – before farming came into existence, all the healthy men of each village (and in places, many of the healthy women) would have spent the majority of their time hunting. Looking at the natural world, animals like lion and leopard split their time between hunting and resting, with little else (apart from reproduction) being thought of.

As electric cars started to appear, the vast majority of car companies tried to stop their progress. Indeed, many spent their time buying inventions and smaller companies, just to kill their electric car program. This was not because they were intrinsically afraid of the electric car, but because they were afraid that if adopted, they might have a smaller market share than they did with the internal combustion engine car. As tends to happen in this situation, however, many of these companies are thought likely to go out of business in the next 2 decades (and it took a start-up, Tesla to fully make electric cars work – even now, many are still trying to go back). The same can be said for the factory production line, and many many others.

The problem is that livestock farming is only second to the fossil fuel industry, in terms of its contribution to climate change, so if humanity is to survive, it needs to change dramatically.

Why should we be worried about saving the worlds wildernesses? I think that a great deal of the population feels that we should save them for their own intrinsic value, but there is more than that. Rainforests around the world are the engine that supplies much of these areas rain, and without the rainforest often the area will collapse into desert.

Some suggest that we should all go to a plant-based diet, and certainly this would do what we want (though it should be noted, that this leaves the livestock industry in the same place – indeed, the livestock industry as it currently is, must have its days numbered, as humanity cannot afford its carbon footprint or it will continue our descent into climate breakdown). The only alternative to this is to produce the dairy and meat through other means; and these means are multiplying around the world, as it is recognized that there is a lot of money available for those who solve it early.

These range from growing meat on a scaffold from cells taken from a live animal. This idea is rapidly growing in popularity, though some think that this is a dead end, and instead a lot of people are looking at brewing microbes, which can be made to have a taste and texture that will make them indistinguishable from the real thing. This would also allow the unhealthy parts like fat to be not grown. It avoids the need for a lot of land, needs no fertilizer and greatly reduces the amount of fresh water needed (some can use salt water).

Protectionism is not restricted to farmers, with many governments getting in on the act, and in the EU a new group is pushing for a continent wide ban.

I think that these things will be developed somewhere, and we will miss out, if this happens in places like China (they have a great incentive, as their population eats little real meat, but as the wealth of people are increasing, they are demanding to eat a diet more like the west. For most of us, we are going to be watching from the sidelines, in terms of what happens next, but we can write to our representatives, and make sure that livestock owners are not the only voices that they hear.

Pangolins are returning to Kenya

Long thought to be extinct in the country, one was caught, back in 2018. As a result, effort is being put into protecting this species. Farmland around the Serengeti erected electric fences in order to stop elephants from stealing their crops, however, unfortunately, they have been having an unintended consequence.

Pangolins need to be able to roam large distances, and they have been regularly being electrocuted. Unfortunately, they roll up in a ball, as a natural reaction to threat, and this has lead to many rolling up around the wire, thereby being electrocuted.

This discovery in 2018 was of a dead pangolin, and as a result, many farmers have changed how their electric fence works to help protect this creature.

There are only thought to be 30-80 pangolins left in the country, but by making these small changes, the few pangolins that remain will be able to thrive, and the population is likely to grow.

This is a pangolin sighting that was filmed on the Massai mara

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