Tag: Australia

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Why are people determined to believe that wind turbines kill whales

Coastal Australia is having another flare-up where locals are suggesting that wind turbines are killing whales. If this were the case, it would mean that those who want to save the planet would need to choose between climate change and conservation of whales.

Read more: Why are people determined to believe that wind turbines kill whales

Pictures put up, include images of whales on fire, among others – paid for Newcastle adn Port Stephens Game Fish Club. They suggested that the posters highlighted risks that were known for the whales, but there is no credible evidence that wind turbines have any impact on whales (except during building, but as the picture shows this is short-lived). Indeed Quentin Hanich who is the editor of the academic journal Marine Policy recently had to spend a week debunking a fake article that purported to come from his publication, which claimed that 400 whales would die a year, if a proposed wind farm went ahead. While the facebook post where it originated was taken down, the fake articles can be written far faster than they can be taken down. This offshore wind farm in New south Wales, is opposed by everyone from locals to MPs from outside the region – usually because the are opposed to renewable energy development.

This seems short-sighted- while Australia does have a large coal industry, most is exported (only around 30% is used in the country, and coal in electricity generation is now so much more expensive than almost any renewable generation, that its days are numbered) and of Japan,South Korea, Taiwan,and India which takes the majority, only India does not have a 2050 pledge of zero carbon – so if those promises are to be kept, the market for most of the coal will disappear within the next 25 years.

Opposition has been fanned by the coalition, and people like Baraby Joyce (a renewable energy opponent and climate change denier) have been loudly stating that support for renewables was a cult and the people should fight back.

Amanda De Lore is also fighting against it, and suggest that the 3 month consultation period was rushed and hidden (it was not) and that offshore wind is “not clean, green energy”. She stated that the project was not taking her groups concerns into consideration. However, when concerns are raised which do not conform with reality (like suggesting that offshore wind turbines are not green) they should be ignored. Importantly, when you compare the death toll of offshore wind turbines to a coal power plant, the numbers are stark with thousands more species killed by coal power.

This is part of the issue with public consultation. When opponents lace the population with falsehoods, you find yourself having to engage in a years-long effort to correct, before you can even have an intelligent conversation.

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Spotted Quoll spotted South Australia for first time in 130 years

Spotted quoll (same species) picture taken by Sean Mclaod

Australia has had a horrific time since the arrival of Europeans, in terms of extinctions. Much of these have been caused by introductions of stoats and weasels, as well as domestic cats. A wide array of species have been pushed to extinction, while many more are gone from the Australian mainland, but survives on island life rafts off the coast.

In this instance, Pao Ling Tsai, a South Australian farmer, thought that their chickens were being taken by cats, but instead had been hunted and taken by a spotted (or tiger) quoll, an animal last seen in the area 130 years ago. It should be noted that there have been multiple reported sightings, though this is the first time it has been successfully photographed.

Having checked that the quoll was healthy, it was released back into the area it was found, and many camera traps have been set up, in order to see if there are any others in the area.

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Just how endangered is the Vanuatu dugong? First survey since 1988 underway

The quiet bays in the Melanesian archipelago are perfect for the sea grass meadows, which in turn means that it is fantastic for dugongs – animals also known as sea cows. Just a few years ago, these animals were a regular sight. Growing up to 4m long and 400kg, just a few years ago, it would not be an unusual day when you would see one of these animals in both the morning and afternoon. Now they are rarely seen.

Officially, they are only classed as vulnerable (one of the lowest forms of endangered), but given how long it has been, it is unclear how the population is doing. However, unfortunately, given fishermen (and other people on the wate), are encountering them so rarely, it is likely to have got worse. Dogongs in this area behave differently to Australia where they have huge seagrass meadows, so this full survey is certainly required.

Read more: Just how endangered is the Vanuatu dugong? First survey since 1988 underway

It would be another area, where a growth in the ecotourism industry (ethical – not damaging the animals or stressing them) could be fantastic. Many surveys done on sea mammals, take on tourists to reduce their cost. Personally, I will always look for a research boat, as they want to be there, and will not go out if there is no chance of sightings.

The next-door population of New Caledonia was recently downgraded to endagered, and the east African population is classed as critically endangered.

Globally, the threats to these animals include gill-net fishing, boat traffic, coastal development and even hunting. Unfortunately, climate change is also a threat – rainstorms are becoming far more common, and these are damaging the seagrass, alongside cyclones.

Currently, it is estimated that the world looses 7% of its seagrass meadows each year. This should be concerning, as sea grass has a roughly equal ability to draw down carbon dioxide to land rainforests – so the more we loose the harder it will become to halt global warming. It should also be noted, seagrasses grow more healthily with dugongs present – help keep seagrass beds healthy by grazing on them, which controls their growth and disperses their seeds. This process is called “cultivation grazing”. The benefits on seagrasses include growth control (rapid growth can be bad for the long-term survival of the seagrass), disperse seeds (often with some ‘fertilizer’, which can help the seeds grow particularly well- and like various plants and elephants, seeds that have gone through a dugongs digestive tract is more likely to grow than those that do not), Improve genetic diversity (dugongs move between areas of the meadow, and take seeds with them) and help recovery after cyclones (by connecting areas of the meadow, reseeding meadows in danger from elsewhere where they are doing alright).

Unfortunately, this makes the dugong a keystone species – therefore, its loss would have a very negative impact on the whole ecosystem. Other species that rely on seagrass including sea turtles, manatees, a wide array of fish, many sharks are born in the seagrass, including lemon sharks nurse sharks, and bull sharks. A wide array of birds are similarly reliant.

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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”
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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”
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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.

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The greater glider, looks like a cross between a koala and a possum, but it is in danger, and if Australia does not change course it may be lost

Recognized as an incredibly popular species, with a great deal of conservation effort being put into its survival. The Queensland conservation council is urging the state government is calling for its remaining habitat to be protected, as logging continues.

Calls are being made to create a park to protect the species.

The Miles government promised (in June) to turn 50,000-60,000 hectares of high value ecosystems into a greater glider national park. Unfortunately, this plan gave detailed listings of where timber would be extracted, but did not include clear maps for areas to be protected. Quite understandably, conservationists are calling foul – it is not possible to deforest an area, and then call for its conservation.

The population of this species is estimated to have halved in just the last 20 years, which should officially declares it as vulnerable to extinction (it is true that this is often decided over 10 years, but still is a very bad sign). Other issues, is fragmentation of their forests – they are generally very unwilling to come down to ground level to travel to other trees. They can stay in the air for around 100m, but this means that a gap greater than this can isolate the population. They require eucalypt forests (this is almost all they eat, with plenty of large tree hollows to make home, and retreat into.

Will Australia step up, or will this species get pushed into planned extinction? Time will tell, though given Australias track record, we should not expect big things without a great deal of pressure from conservation groups, and publicity on what is happening, from around the world.

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As water buffalo return, they are revitalizing the kizilirmak delta – formerlly destroyed by becoming industrial wastelands

There are many species around the world which are so important to their habitat, that even a reduction in the population can cause problems – this is one of them. After tadpoles have lost their tails, many will climb onto the hairy back of the water buffalo, getting a ride to other rich feeding areas (and the buffalo gets any irritating flies eaten). There can be as many as 20 frogs on each water buffalo.

Water buffalo were first domesticated 3000 years ago, in Asia, but have proved to be so useful, there are now 200 million spread across 77 countries, on 5 continents. Initially considered as useful animals for plough and similar farm work, in recent times, it has been recognized for its ecosystem engineer duties.

Thriving in wetlands, they can force their way through places that other herbivores fail. While they are not native to many of their current homes, they are capable of filling ecological niches that have long been empty after the initial large cattle like animals were killed off, or all taken into captivity. It should be noted, that in some places, like Australia, there are few to no predators, to control such a large animal, which has lead to a population of 200,000. There is a native water buffalo (Anatolian).

A variety of characteristics help this species to easily fill the ecological niche of the European water buffalo (lost around 10,000 years ago). From transporting seeds in their fur, they fill in many of the roles that the extinct European water buffalo did in the long past. Even in places like the UK, which is one of the most nature depleted countries, the water buffalo are replacing long extinct species, and recovering ecosystems as a result.

This sort of behaviour has to be carefully managed, as in many places, introducing a closely related species can be very costly. In the UK, the grey squirrel has decimated the population of the native red squirrel, and this is not an isolated example, with many others from around the world. However, so long as their effect is closely managed, and there is not a closer relation to the missing species, the impact is likely to be a net positive. Over the last 50 years, 1/3 of the worlds wetlands have been lost, these species, when carefully managed, are likely to be able to bring some of this back.

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The critically endangered Regent honeyeater may have new hope

This critically endangered species of honeyeater has a renewed hope of survival. They have become so rare, that the juveniles have started mimicking other bird species, because they hear the sounds of their own species so rarely.

The new speck of hope comes from the fact that captive birds have bred after being released.

There are an estimated 2200 species in Australia which are in some way endangered. This species is endangered for the same reason that many of these are – loss of habitat. Agricultural land, forest clearing, logging and the expansion of coal seam gas drilling was predicted to wipe out this bird, but thankfully they have survived.

Around 140 birds have been released to help bolster the population and have been shown to have bred with wild birds. With just 300 wild birds left, every extra breeding bird can make a large difference.

Cassowary species

 PaleoNeolitic (montage creator) BS Thurner Hof Kora27 Martin Sordilla – Wikimedia Commons

Cassowary

  • There are 3 species of Cassowary, from left to right Southern, Northern and dwarf Cassowary. The Southern Cassowary is the 3rd largest and 2nd heaviest bird in the world, after ostrich and rhea.

90% of their diet consists of fruit. Having said this, they are classed as omnivores and take a range of foods including shoots and grass seeds, fungi invertebrates, eggs carrion fish and small vertebrates such as rodents, small birds, frogs, lizards and snakes. While all of the ratite family can eat meat, Cassowaries are by definition the most omnivorous, and while other ratites will eat meat when other food is scarce Cassowaries take more meat than others.

While the southern Cassowary has part of its range on Australia, all three have their main range on New Guinea

  • The southern Cassowary is listed as least concern by the IUCN, however with a 4400 individuals other agencies class it as endangered.
  • The northern Cassowary is also listed as least concern by IUCN and this population numbers 10,000-20,000
  • The dwarf Cassowary is listed as least concern as well. Unfortunately I cannot find estimates for this species, but with an overall population of 20,000-50,000 it is likely to be the most common
Adults are formidable enough that there is no regular predation. However, a range of birds such as the Papuan eagle, mammals such as the New Guinea singing dogs, and reptiles such as pythons and monitor lizards all take young when adults are not protecting enough.
Below is any news we have written on this species, and below that will be listed places you can see this species in the wild. Should you work in conservation or tourism on this range of species do get in touch through the list your wild place link on the home page.
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