Showing posts with label ecology. Show all posts
Showing posts with label ecology. Show all posts

Trapdoor Spider has Declining Population

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Times are a changin', as the saying goes. And it is not always for the best. Trapdoor spiders are getting fewer in South Australia. They balance the ecosystem, so their loss is a bad thing.  If they do not eat beetles, for example,  the Coleopltera will run amok. | not. |◀|
Trapdoor spider
Surveys on the numbers show a sharp decline. In 18 days in the 1950s 122 specimens were found. A search in 2014 caught only 18 in ten days. No research has been done to see what is happening nationwide. | ▶ | not. | ▶ |

The arachnid has its weaknesses. Each builds its burrow when it is immature. The retreat is home for its whole life. If the lair is damaged it cannot be rebuilt. Its positive point is longevity: it can live for 30 years.| ▶ | not. | ▶ |                                      | ▶ not | ◀ |
BiOLOGY 
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LEGGIES ARE FEWER
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Objections are Strong Against Carmichael Coalmine in Queensland

Conservation has always been ideologically polarized in Australia. There are those who seem to want to stop all development to prevent any deleterious change and those who want to rape the environment in search of the holy dollar - and ne'er the twain shall meet! With the Greens now gaining a handful of seats in the Senate they have voting power beyond their number. All shades of national government will have to compromise. Even state governments are not free of the Green "scourge", as they see it.
Adani coal mine mining
There is an issue with a planned coalmine in Queensland, the Carmichael mine near Bowen. Former premier Campbell Newman was fully supportive of the development and showed an intention to introduce new legislation to achieve it. This has changed. Labor is not so enamored with new projects at any cost. This is the case even though the Greens do not have the balance of power in the Queensland parliament.

Like medication you get from your doctor - there are always side effects. The natural environment will certainly be damaged in some way by a new mine. Objectors say the black-throated finch which is already threatened will be wiped out. Even the Waxy Cabbage Palm could be decimated. The evergreen problem of changes in water flow means that Doongmabulla Springs will probably dry up.

Claims by the investor Adani that a 30,999ha site will be set aside for the bird are not based on solid theory. The birds have access to that area already. And land used in the development will be taken away. Black-throated finch prefer their home ground and have never been known to travel to new areas. Raving about economic benefits will not change the views of ardent greens.
Economics by Ty Buchanan
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