Thursday, March 25, 2010

The birds sing less, are smaller in the United States by climate change.Caribbean must reseach more in the region and be in alert.

The birds sing less, are smaller in the United States by climate change.



The community must learn to preserve the habitat through climate change and take action to preserve the nature and quality of life.
Scarlet tanager
 
Scarlet tanagers are more than 2% smaller today than in the 1960s

Climate change 'makes birds shrink' in North America, BBC
By Matt Walker

Editor, Earth News
Un estudio de casi medio millón de aves, pertenecientes a más de 100 especies, muestra que muchos se están volviendo gradualmente más ligeros y de crecimiento más cortas las alas.

Esta contracción se ha producido en sólo medio siglo, con las aves y se cree que estan transformándose en un tamaño más pequeño en respuesta a temperaturas más cálidas.El caribe debe estar alerta
Ā de yánjiū jìn 50 wàn zhǐ, fēn shǔ 100 duō gè pǐnzhǒng, xiǎnshì, xǔduō zhèng zhújiàn chéngwéi gèng qīng, yuè lái yuè duǎn yì.

Zhè zhǒng wěisuō fāshēng zài duǎn duǎn bàn gè shìjì, suí zhe bèi rènwéi shì niǎo lèi chéng jiào xiǎo de dàxiǎo biànhuà xiǎngyìng qìwēn.
Изучение почти полмиллиона птиц, принадлежащих к более чем 100 видов, показывает, что многие из них постепенно становится легче и короче растущие крылья.

Это сокращение произошло всего за полвека, с птицами считается превращается меньшего размера в ответ на более высоких температурах.
Карибы должно быть предупреждение исследование о природе
Um estudo com quase meio milhão de aves, pertencentes a mais de 100 espécies, mostra que muitos estão gradualmente se tornando cada vez mais leves e asas curtas.

Esta retração ocorreu em apenas meio século, com os pássaros pensaram estar a evoluir em um tamanho menor em resposta às temperaturas mais quentes.
Caribe devem estar em alerta a pesquisar mais sobre a natureza ...
Kē ēka adhyayana mēṁ lagabhaga pān̄ca lākha pakṣiyōṁ kō, 100 sē adhika prajātiyōṁ sē sambandhita, patā calatā hai ki bahuta dhīrē dhīrē halkā banatē jā rahē haiṁ aura chōṭē paṅkha baṛha rahā hai.

Yaha kamī sirpha ādhī sadī mēṁ hu'ā hai, pakṣiyōṁ kē sātha sōcā thā ki ēka chōṭē ākāra mēṁ garma tāpamāna kē javāba mēṁ vikasita hō.
Kairēbiyana cētāvanī svabhāva kē bārē mēṁ aura adhika śōdha mēṁ hōgī...

How climate influenced the evolution of humans




D. BALASUBRAMANIAN "The Hindu", India newspaper
"...a group of Academies in the US are proposing a long-range research programmes (see their paper at www.nap.edu/catalog/12825.html).The focus will be on two broad themes. The first is on impacts of climate change and climate variability on human evolution and dispersal. It is now realized that the build up of oxygen, through billions of years of photosynthesis by plants, led to a major shift around 500 million years (MYr) ago, in the atmosphere, environmental ecology and landscape development. This, in turn, is thought to have led to an “explosion” of life forms.

On the flip side, a massive meteoric crash on earth 65 Myr ago led to not only the extinction of dinosaurs, but of many other species through the crash, the resultant heat and the cutting off of sunlight through the massive dust clouds and the resultant cooling of the earth's surface."
The effort here will have to be more region-specific. What were the climatic patterns in Africa, West Asia and Eurasia? And how can one connect these with archaeological and DNA data available from fossils of apes and humans?


Collaborations needed
How can we do so? This would require collaboration between oceanographers and geologists who have put together models of oceans and coast lines, volcanic eruptions and climatic variations over long periods in earth history on one hand, and anthropologists and paleontologists, who have been gathering data on vegetation, animal and human fossils on the other.
It would further need gene biologists who can study the variations in whatever DNA samples they can lay these hands on, and reconstruct our genetic history
India's rich tradition

India has a rich tradition in researchers in archaeology, paleobotony, genetics, and ocean science. We must join this forthcoming international program, by providing talent and treasury.
We often pride ourselves on our ancient heritage.
Let us put our efforts into understanding our evolutionary heritage, since we often repeat the platitude ‘Vasudhaiva kutumbakam' (the whole world is one family). Also, The program attempts to understand how clay moulded us into existence in the first place.
dbala@lvpei.org
Keywords: human evolution, climate change, DNA sequencing, Charles Darwin, fossils, gene biologists

No comments:

Post a Comment