White of the Square of the Track in Arahal (Seville) There are the people who thinks that for tradition it is necessary to support the squares of white, and to leave that the children play, get dirty and roll about in him, better that to have landscaped or paved squares, without thinking that a child can suppose the white one problemilla of health. Due to this and in the entry that I prepared for another blog in which I collaborate, I thought of making her extensive to the Museum of the Science, and here the result is after modifying it properly.
The first thing will be to know something more on the white one, of which there is no a lot of information in the network, although it is always a little: The white one is a sedimentary material, of organic origin and of yellowish - orange color, which is obtained of a type of lime rock, the limestone nummulítica, that it comes from the remains of conches of nummulites, a type of protozoans foraminíferos, with a calcita conch, aragonito and rarely silica proceeding from the area of the Hills, in Seville, although also it is possible to find in the basin of the Yellow river in China.
It might think that as it happens with some types of sand, rich in silica, the exhibition prolonged to the white one and his consistent respiration might provoke silicosis, a serious illness chronic and irreversible that affects professionals who work with this material, for example in the metalworker, ceramics, mining, marble, vídrio..., but on this part we can be calm, position on that, as I commented in the previous paragraph, the silica is an element that rarely appears in the white one or is in minimal quantities.
But there is another problem and it is given by one of the biological elements of the squares: I refer to the pigeons, since there are a few birds that have turned into last decades in an urban plague in our villages and cities. In spite of his more or less agreeable appearance and his good reputation (pigeon of the peace, carrier pigeons, cartoon pigeons...) there are one more plague, how there can be the cockroaches, the rats or the termites. Apart from this it is not strange that bring over to the human beings any more of the account, since they have lost the fear of the persons and do not hesitate to steal meal or give pecks to the incautious walkers who approach to feed to the 'little doves'. And let's not say already, if they bombard you with his stinking depositions... Of course, with this I do not mean that the human beings we have any more rights that the rats, the cockroaches or the pigeons... are thought by me that, simply, we are species that we compete for the same space and resources... and because of hygiene, we say that it is not very suitable to share hearth with these animalcules...
Pigeons in the Square of the Track in Arahal (Seville)
The pigeons that they inhabit in our cities and squares belong to the species Columbia domestic livia, a subspecies proceeding from the domesticated ferocious pigeons. The domestication was carried out by the man hundreds of years ago, but nowadays these live in the semiwild state, coexisting with us, perfectly adapted to the transformed urban environment.
Before continuing, I would like making clear, that the problemillas about which I speak are not serious want to create unnecessary alarms, simply I try to inform about a small question that it appears with the union of these two elements about which we are speaking: white + pigeons.
Pigeons in the Square of the Track in Arahal (Seville) The excrement of the pigeons is mixed little by little with the white one and there happens to be part of this one, since it is difficult to clean, without eliminating also the white one, which supposes that when dust gets up and this one stays in suspension in the ambience, it can go on to our lungs (both the sandy material, and the depositions of the pigeons). And to contact pigeons feces can represent a small risk for the health. Controversy exists with regard to the illnesses quantity that the pigeon can transmit the human beings, but more or less we can speak that approximately 30 infectious diseases exist from these birds to us, and approximately 10 transmissible ones to other domestic animals. In terms of public health, the zoonosis of major importance are criptococosis, aspergilosis, salmonelosis, listeriosis and estafilococosis, that they can be transmitted across the air or his feces. Another three a little stranger illnesses associated with the feces of the pigeons are: histoplasmosis, criptococosis and psittacosis:
- The histoplasmosis is an illness caused by a mushroom that grows in the feces of the pigeons, which it can spend to our respiratory system, although only in cases of high exhibition it can cause infection. It is an illness that sometimes does not give symptoms and when it shows them there are the same symptoms as a flu, with what the people make a mistake. The persons inmunodeprimidas if they cover more risk of enduring the symptoms. And it is necessary to say that the illness one cannot transmit from person person.
- The criptococosis is another illness for fungi associated with the feces of the pigeons, although also it is very little probable that the healthy persons turn out to be infected still at high exhibition levels, but, as in the previous case, there is an important infection risk for having the flagging immune system.
- The psittacosis (also acquaintance like ornitosis or fever of the parrot) is a rare infectious illness produced by bacteria, which affects principally parrots, cockatoos and parakeets, but also it can affect to other birds, such as the pigeons. When the feces of these birds dry off and are transported by the air they can be inhaled by the persons and fall ill. In the human beings, this bacterial illness is characterized by fatigue, fever, headache, eruption, shakes and sometimes pneumonia. The symptoms appear approximately 10 days after the exhibition and his treatment consists simply a common antibiotic. The persons with major contagion risk are birds proprietors, personnel of shops of pets, veterinary, and you present yourself with the systems immune debilitated.
My small Marten chasing to the pigeons in a square of white In spite of all this, I am the first one that I will keep on taking to my kidling to the square of the Track, or to the Park of the pigeons to which it runs and plays with other children, and I will sit down myself there to accompany it, but I will try that it gets dirty, touches or breathes the minimal quantity of white possibly, while they keep on standing out to his wide ones over there, the nice and adorable pigeons...
Marten with the pigeons to the fund. ---------------------
Source of the images:
- The Science of the Life.
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It notices: This entry is a version lightly modified of the one that I published in The Arahal blog and it has been checked, nicely, by Sohpie.
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Sources:
- Wikipedia.
- Educared.
- News Educared.
- NYC Health.
- Fueraplagas.
- Scielo.
- Environmental engineer.
- Croquettes rain.
- The Arahal blog.
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