‘Sky islands’ in Africa are producing more new species than anywhere else

Sky islands like this one Mount Lico in Mozambique

Sky islands are found across much of Africa. Our experience of sky islands, occurred within the Udzungwa national park in Tanzania. This national park protects a large portion of the Eastern arc mountains. – a chain of mountains which run across Eastern Tanzania.

Africa started drying out around 5500 years ago, and much changed at this point, including a great expansion of the Sahara. However, what is relevant here, is that in many parts of the continent, this caused the rainforests to retreat. More rain falls on higher ground, so you were left with a situation where the tops of hills and mountains remain forested, but the valleys become savannahs. Perhaps one of the most notable effects of this, was to split the worlds mountain gorillas into two populations, one in the Bwindi impenetrable forest in Uganda and the other in the Virunga ecosystem. At their closest point, these two protected areas are only 20km apart (though driving between the two are likely to take longer, as visitor facilities are not at these points). Unfortunately, this space between the two areas has a large human population. This means that the two mountain gorilla populations were stuck on their respective mountain homes, relatively close together, but with no way to cross the gap between.

Not researched until recently, there is a strip of mountains that runs from northern Mozambique to Malawi’s Mount Mulanje. As with the eastern arc mountains, rainforest was preserved on these peaks. These were finally given scientific attention by an internatiional team in the South East Africa Montane Archipelago study. While archipelagos are usually used to refer to a group of islands, it seems apt here. Among these mountains, there are around 30 fragmented pockets of grasslands and evergreen forests that have been largely cut off from each other.

This is perfect for housing unique collections of species, that have found themselves cut off from other habitat that they once roamed. This study, identified 90 species from amphibians(11), reptiles(22), birds(3), mammals(4), butterflies(39) and freshwater crabs(6), alongside 127 species of plant, not found anywhere else on earth. These sky islands are even being considered for their own ecoregion.

Big or small, it is important to protect these little ecological islands, and it should be possible to have tourists visit to give an extra income to locals.

What do we do when carbon offset markets collide with land rights

Stable glaciers are very effective carbon sinks, though if they then melt, they tend to loose all their stored carbon

The problem with carbon offsets, entirely depends on how they are used. When carbon offset money is given to a local project, but many try to buy an area from locals entirely. Kenya currently hosts 11 glaciers within Mount Kenya national park.

The problem is that, many of these projects require a rainforest to be left standing or something similar. Without buying from locals, and an income from the carbon offset to support the people who will loose access to the resource, it is highly unlikely that the deforestation rate will fall at all.

Much of these offset programs are being set up in Africa, on a continent which has the least responsibility for climate change, and yet local people are loosing the rights to land that they have lived on for millennia.

US has tightened African elephant trophy import rules but stops short of banning

Elephants hunting used to be a common activity. This was banned in Kenya in 1973 and in Botswana in 2014. The trade in Elephant parts was banned in 1989.

For many years, however, conservationists have called for rich countries to ban imports of hunting trophies on a country by country basis. This is for a simple reason – a reserve like the Kruger, has a real issue with a growing elephant population, yet at the same time Nigeria has only 400 elephants left. Tanzania has seen a reduction of elephants of 63%, while Mozambique has seen a reduction of 34%.

This new ruling suggests that imports are only allowed from populations which are large enough to support the loss. Now, I would be interested as to how this is worked out. For instance, could I buy a tiny parcel of land, on the edge of a large reserve, and allow any elephants that step on my land to be hunted?

  • Somewhere like the Selous game reserve, would in theory be acceptable for elephant hunting. If we go back to the 1976 there were approaching 109,000 elephants. However that population is now thought to be around 13,000 – hunting should be banned until the population has recovered. If a hunting reserve cannot afford to police well enough to eliminate poaching, it should not be allowed to hunt (the number of poached and hunted elephants must be below safety levels.
  • The Serengeti ecosystem also does not have a large elephant populatino so cannot allow hunting
  • The African forest elephant is considered critically endangered, so none of these elephants should be hunted

 

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Could Bison allow the land to reduce air pollution? – Yes

A small herd of 170 bison, released into a 20 square miles area of Tarcu mountains in Romania, are estimated to allow the land to capture 59,000 tones of carbon each year.

Big animals like this, stimulate the soil and plant growth, allowing the soil and plant growth to take up far more carbon than without them. Although Romania is one of the wildest countries in Europe, the European Bison was lost around 200 years ago. Between 2014 and 2021, 100 bison were reintroduced into the area, and that population has naturally grown such that there are now 170.

Scientists estimate that the lands carbon storing potential is as much as 10 times greater with the bison (they suggest that it is between 5 and 15 times more carbon.

Continue reading “Could Bison allow the land to reduce air pollution? – Yes”

It appears that humans have been transporting wildlife around to new places for longer than we thought

Marsupial bones have been found on islands hundreds of km from Australia. What is more astounding is that these moves appear to have occurred 42,000 years ago, and could not have taken place without humans. Found in some of the islands, which form a chain from Asia to the Australian continent (though there are still hundreds of kilometres between them.

Found within rock shelters within these islands, were a layer of sediment, which included signs of human presence. Amongst this layer, was also found bones of marsupials (there is no other evidence that these animals ever lived on the island). This island is over 150 miles from the nearest place that these animals could have been found, which is unlikely to have been survived for a crossing (though it should be noted, that animals are thought to have crossed from Africa to Madagascar on similar rafts, and this is 250 miles.

We continue to move species, and often in quite damaging ways. Still it is interesting to know how long we have been doing it.

Great white sharks separated into 3 district populations 200,000 years ago – and have Orca stopped hunting the South African population?

These 3 groups do not intermix, and only very seldom, interbreed. These populations are found in the Southern Pacific, Northern Pacific and the North Atlantic and Mediterranean.

This naturally means that the great white sharp is far more at risk of extinction, than if all the great white sharks in the worlds oceans could interbreed.

These areas appear to be bounded by great ocean currents, which are rarely crossed. This is a problem, as if an individual population is lost, it makes it far more likely that distinct genetic information could be lost with it – take the Mediterranean great while shark population, which has seen a dramatic population decline from historic numbers, estimated at between 52% and 96% (areas like the Maramara sea, are known to have lost 96% of their population) depending on which study you read.

This makes local conservation far more essential, and we need to be careful to not loose any individual populations. There has been a great deal of worry for the great white shark population around South Africa, as they pretty much vanished in 2017, but appear to have returned in 2024. The disappearance of the great white was attributed to 2 orca which had become expert in hunting and killing these sharks – it should be remembered, that while great whites are often at the top of the food chain, they are hunted for food by orca. Whether these orca have gone back to eating something else, hence the great white shark return, is a question that does not appear to have been answered as yet.

Badger vaccinating is found to be far more effective than culls

The UK has been culling badgers since 2013, and since then over 230,000, yet a recent study has shown that vaccination is far more successful than culling.

This trial in Cornwall, found that the rate of bTB in the study area fell to zero.

Why is this important? One of the big shames of the British government is the fact that experts have been telling them since the beginning of the cull, that it will not work. This is for a very simple reason. Badgers are required to mingle to breed, and when you cull badgers, while you can largely eliminate them in the centre of your trial area, in the area further out, you merely reduce the numbers.

As a result, young males and females that are looking for a mate are required to roam further in order to find one. As a result, any local concentrations of bTB get spread around, causing the rate of the illness to increase. The study area covered 12 farms, and they vaccinated 265 badgers.

The next step is to fund a study over a far larger area.

It should be noted, that farmers funded the study, and it has been shown that not only are vaccines more effective at eliminating bTB, but also significantly cheaper. Furthermore, they found that more badgers were vaccinated per km than were culled on nearby land – suggesting a far higher reach within the badger population.

Might we finally be at a place, where with bTB outbreaks, we can vaccinate rather than cull the badgers, so as to reduce the spread in cattle (though as I have written before, much of the spread comes from moving cattle around, rather than from the badgers anyway.

In south Africa, the bTB reservoir is found within the wild lion population. Understandably, few people would want these lions to be culled, but the ability to fire vaccine darts at them, might well be feasible in eliminating bTB here as well, where around 54% of lions have been shown to carry the illness. Whether or how fast the vaccine idea will reach South Africa is something that we will have to look out for.

Orangutans climb incredibly high – no space for acrophobia

Borneon orangutan mother with her offspring – photo credit stockcake (Photo by <a href=”https://stockcake.com/i/orangutan-treetop-rest_758559_866654″>Stockcake</a>)

Life is hard in the Indonesian rainforest – compared to Africa and South America, there is very little to be found to eat (except in specific areas. As a result, orangutans become solitary, with the only time they are seen together is a mother with young, or a courting couple. Another problem, is demonstrated here – there is so little food to be had, that every food opportunity has to be realized. This has meant that orangutans have become the best climbers (followed by Chimpanzee and then Gorilla), as where ever the food is, it needs to be accessed.

It is true, that with tools, humans can become even better climbers (as can be seen from the image), which is taken from further up the tree than the orangutans have even climbed.

Continue reading “Orangutans climb incredibly high – no space for acrophobia”

Paignton zoo in Devon has a baby Dik-Dik

The dik-dik is a small antelope, found in East Africa. I have been lucky enough to encounter them on many occasions, when on safari in Kenya.

They tend to move around in pairs, and the bond is so strong, it is not uncommon for them to follow each other out in front of cars.

A Kirk’s dik-dik in the wild

With a population of almost 1 million, this species is listed as least concern, never-the-less it is of great interest to see it in captivity.

Paignton zoo had a baby dik-dik arrive on new years day, so it will be even smaller than normal.

Flamingo and Grebe Species

Flamingoes and Grebes

At the top of the page is an image of every species of flamingo, below you will find some information on each species. Below this, you will find the same for the grebes.

As always, should you work in tourism or conservation of any of these species, do get in touch, we are keen to help people find you. Click on list your wild place on the homepage main menu.

American Flamingo

Found in the West Indies, northern South America (including the Galápagos Islands) and the Yucatan Peninsula. It was considered cospecifc with the greater flamingo, but they are now recognized as separate species (it is also closely related to the Chilean flamingo). 

Formerly it was a culture icon in Southern Florida, but was largely extirpated by 1900. Having said this, there are vagrant flamingos in Florida, and these now often stay in the country worldwide.

There are 80,000-90,000 left in the wild, and there are 4 breeding colonies: in South America (in the Galápagos Islands of Ecuador, coastal Colombia and Venezuela, and northern Brazil), in the West Indies (Trinidad and Tobago, Cuba, Jamaica, Hispaniola (the Dominican Republic and Haiti), The Bahamas, the Virgin Islands, and the Turks and Caicos Islands), and tropical and subtropical areas of continental North America (along the northern coast of the Yucatán Peninsula in Mexico, and formerly southern Florida in the United States).

Andean Flamingo

Found in the Andes mountains of South America, it is in the same genus as the James Flamingo. Indeed, the Chilean Andea and James flamingo often share nesting sites and are relatively closely related.

It is considered vulnerable to extinction with roughly 34,000 remaining in the wild, but declining over time.

As with other flamingos they are filter feeders, though what they filter can vary from algae to small fish – which they look for in shallow salty water.

They migrate between salt lakes in the summer and lower wetlands in winter – with the capacity of covering 700 miles a day.

The threat that this species faces, is generally due to human activity of mining and other changes to their habitat.

Chilean Flamingo

Closely related to the American and greater flamingo, it is listed as near threatened in the wild with a wild population of about 200,000. Population declines are due to habitat loss and degradation, harvesting and human disturbance.

While they are only currently listed as near threatened, there is a great deal of concern about falling populations, and as such they are relatively common in zoos and there is an active breeding program..

 

Greater Flamingo

The greaterflamingo has the greatest of ranges of any species (as you can see from the map. While it is found down the East coast of Africa, it is also found on the northwest coast and the northern coast. It is also present in the middle east, and throughout much of Sothern Europe. Its range also extends into India. It is listed as least concern with a population between 550,000 and 680,000 with between 45,000 and 125,000 living in Europe – the Camargue is the most famous in Southern France

They are listed as least concern

 

James Flamingo

The James flamingo is also found on the high Andean plateau, and is closely related to the Andean Flamingo. It was thought extinct until a population was rediscovered in 1956, and the current population is thought to be around 106,000.

It is currently listed as near threatened, and on CITES appendix 2.

Lesser Flamingo

Found in Sub-Saharan Africa and India. While the smallest species, it still stands 80-90cm tall. The easiest way to tell this and the greater flamingo (with overlapping range) apart is that the greater flamingo has more black on its bill.

Estimates on the number of this species range from “above” 2 million to as much as 5 million.

They generally breed in highly caustic lakes of the great rift valley in Africa, though there are places in India and a few other places as well.

They are classed as near threatened. While their choice of nesting site protects from many predators, it is still true that many flamingos are killed. From fish eagles to baboons and big cats, there are many species who will eat a flamingo if they can get hold of it.

It is well worth seeing this animal in the wild. Seeing 750,000 lesser flamingos on lake nakuru in kenya is a site that is hard to forget.

Visits to see flamingos are well worth it, and while some live in remote places, it is usually a species which is reliable. Please get in touch if you work in tourism or conservation of this species. Click on list your wild place on the home page of the website.

Next the Grebes

While some sites claim 22 species, my list has found that some of these were extinct (indeed, according to my list there were 3 species that have gone extinct. If there are any experts out there who notice one missing, let me know

We are eager as always to help people find places to see these birds. Do let me know if you work in wildlife tourism or run a place to stay where these birds are regularly seen. Click on list your wild place on the front page of the website.

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