Showing posts with label habitat_grab. Show all posts
Showing posts with label habitat_grab. Show all posts

24.7.15

The acoustic ecology of native bird extinction and the sound of “cock-a-doodle-doo”

For eons the Laughing Kookaburra has been announcing the break of dawn for eastern Australia. The loud 'koo-koo-koo-koo-koo-kaa-kaa-kaa' is often heard in a chorus. The bird is one of the larger members of the kingfisher family and lives in one place for most of its life. It also mates for life.

The more settlers convert bio-diverse landscapes into mono-culture and populate it with alien species, the ecology changes into an artifact. The soundscape too takes on the characteristic of a noise composition.

Now the highest-ranking rooster has priority to announce the break of dawn. The (overseas) circadian clock of the domesticated fowl often is set off long before dawn. They do not sing in a chorus but in a strict hierarchical pattern. The sound of “cock-a-doodle-doo” echos over the dark valleys. Barking dogs and cars complete the early morning cacophony.

Non-native species and fossil fuel combustion machines constitute the ambient soundscape that announces the break of dawn of more industrial activity. The bird chorus of kookaburras and other common native birds fades as the environmental noise increases.

Deforestation and land clearing robs Kookaburras (and other Australian wildlife) of their homes which they need for nesting, roosting and perching to catch snakes and mice. The generously splashed pesticides poison the insects that the birds eat.



Kookaburra and magpie among Australian birds in decline, says report , Guardian 15.07.2015

Magpies, kookaburras and willie wagtails among common Australian birds 'starting to disappear', report suggests, abc, 15.07.2015

The highest-ranking rooster has priority to announce the break of dawn, Tsuyoshi Shimmura, Shosei Ohashi, and Takashi Yoshimura, July 23, 2015 in Scientific Reports, 5, Article number: 11683. DOI: 10.1038/srep11683

http://birdlife.org.au/state-of-birds/

Wedge-tailed Eagle vs rooster

Wedge-tailed eagle rescued from a chicken coop. WIRES
 

Images
Graffiti EU

20.6.15

Vandalising Home


Somewhere in the oeuvre of Hans Blumenberg's Metaphorology he stated that humans are vandalising God's creation having usurped the power of sole owners of the world and the rest of the universe.

In more popular circles the same has finally been mentioned by a Pope: "If we destroy Creation, Creation will destroy us."

"We are sawing off the limb that we are sitting on." BBC

The lust to eradicate life from our only common home is a self destructive suicidal mental condition.

 
For some time we have been working hard at making the sixth mass extinction possible at ever greater speed:

Accelerated modern human–induced species losses: Entering the sixth mass extinction
"The oft-repeated claim that Earth’s biota is entering a sixth “mass extinction” depends on clearly demonstrating that current extinction rates are far above the “background” rates prevailing in the five previous mass extinctions. Earlier estimates of extinction rates have been criticized for using assumptions that might overestimate the severity of the extinction crisis. We assess, using extremely conservative assumptions, whether human activities are causing a mass extinction. First, we use a recent estimate of a background rate of 2 mammal extinctions per 10,000 species per 100 years (that is, 2 E/MSY), which is twice as high as widely used previous estimates. We then compare this rate with the current rate of mammal and vertebrate extinctions. The latter is conservatively low because listing a species as extinct requires meeting stringent criteria. Even under our assumptions, which would tend to minimize evidence of an incipient mass extinction, the average rate of vertebrate species loss over the last century is up to 114 times higher than the background rate. Under the 2 E/MSY background rate, the number of species that have gone extinct in the last century would have taken, depending on the vertebrate taxon, between 800 and 10,000 years to disappear. These estimates reveal an exceptionally rapid loss of biodiversity over the last few centuries, indicating that a sixth mass extinction is already under way. Averting a dramatic decay of biodiversity and the subsequent loss of ecosystem services is still possible through intensified conservation efforts, but that window of opportunity is rapidly closing."

Gerardo Ceballos, Paul R. Ehrlich, Anthony D. Barnosky, Andrés García, Robert M. Pringle and Todd M. Palmer. Accelerated modern human–induced species losses: Entering the sixth mass extinction. Science Advances, 2015 DOI: 10.1126/sciadv.1400253



Stanford researcher declares that the sixth mass extinction is here, Stanford Report, June 19, 2015

Pope Francis’ encyclical: On care for our common homeGuardian excerpt, (for the impatient) 18.06.2015

Karl Heinrich Leopold Deschner, A Criminal History of Christianity.

Aristotle, Nicomachean Ethics

Videos:
Paul Ehrlich, Stanford researcher warns sixth mass extinction is here, video

Prof. Hans Joachim Schellnhuber, Climate change: state of play, Director of Potsdam Institute for Climate Impact Research (PIK). video

Update:
Extinction of more threatened Australian species is not inevitable, 08.07.2015
James Trezise is a policy coordinator for the Australian Conservation Foundation

We need to tighten the law to protect wildlife homes, 13.07.2015 Don Anton , The Conversation


IMAGES:
Adel Abdessemed, Habibi Sculpture, Berlin