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The duck (El pato)

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This is a very special duck, has no scientific name, but it is typical of the pampas.  This equestrian sport, contact sport is called: el pato. In 1600 was played with a live duck both sides of horsemen fought; the game ended when the animal died.  Eventually, it was replaced by any bird cooked and put in a leather bag with handles, so that players could take the handles and through it to another player.  Hudson said about it. "For the gaucho was the game of all games there could not have been a better game adapted to living men whose existence depended both your riding ... The people of the pampa had a crazy fondness for this game. " By violence and fighting that generated  the matches was banned several times, but secretly continued playing. Until 1953 it was declared the national game of Argentina. Este es un pato muy especial, no tiene nombre científico, pero es propio de las pampas. Así se llama al deporte ecuestre, deporte de contacto : e...

Big water

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It  started the World Cup (12/06/14). The emotion seems to paralyze the time. Although nature has its own time and move on.  This time razing what is in its path. The rains in southern Brazil were channeled furiously in the Iguazú River. Iguazú is in indigenous voice : Big Water. Cataracts that are in the area covered by Argentina and Brazil discharging into normal for this time of 8,000 m3 per second, with flood waters reached 47,000 m3 per second. It caused damage and flooding. After calm  ... l ife somehow reborn and fill the spaces. The biguá is an example; on their feet takes  fish eggs to plant them. Empezó el mundial de fútbol (12/6/14) la emoción parece paralizar el tiempo. Aunque la naturaleza tiene su propio tiempo y sigue adelante. Esta vez arrasando lo que hay a su paso. Las lluvias en el sur de Brasil se canalizaron furiosamente en el río Iguazú, llamado en voz indígena  Agua grande . Las cataratas que se encuentran en ...

Biguá Phalacrocorax brasilianus ( Phalacrocorax olivaceus)

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Hace frío, los días son cortos y húmedos con neblina o lluvia e inevitablemente recuerdo el verano. Tengo en mi memoria la imagen de un biguá, nadando y zambulléndose, una y otra vez, en la orilla del estuario del Río de la Plata; sin molestarse por mi presencia. Este pájaro habita en aguas dulces de ríos, arroyos y lagunas de "las pampas". También se lo llama pato cuervo por su hábito acuático y color negro. No hay diferencias entre el macho y la hembra, sólo el ejemplar joven es pardo. En época de cría les crecen a los lados de los ojos plumas blancas. Su largo cuello de forma de S, le permite cazar en el fondo del agua, pequeños moluscos, peces y crustáceos. A veces se encuentra solo, otras vive en grupos de más de 50 aves. Le gusta posarse en árboles y ramas secas, o en las rocas y así pasar las horas. Tiene un primo hermano en Asia (Phalacrocorax  carbo)  que hace cientos de años fue domesticad...

The prophets

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It is said: "No one is a prophet in his own land" for those who are not recognized in his own place, but they  succeed abroad. " You can say the same for Guillermo Enrique Hudson and Carlos Tevez, two Argentines with different intelligences, but with great talent. They were recognized abroad.  William Henry Hudson born naturalist, observer and student of nature; became a great biologist and ornithologist even without formal education. He had the family support, knowledge of English language, their personal contacts  and with perseverance he succeeded. Even in his time he criticized Charles Darwin from their experiences and with  bases .  Unlike the case of Carlos Tevez who grew up in an adverse and harsh environment that marked his character. He is bodily intelligence, athlete: his strength, speed, flexibility, coordination and balance allowed him to shine as a football player in Europe, first in England and now in Italy. Se dice :"nadie es profeta ...

Successful invaders :Limnoperna fortunei and Rapana venosa

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They reached the estuary of the Río de la Plata and its tributaries (35.000 km2) without intencionality, but by neglect. They traveled in cargo ships from asia ; attached to the hulls or as larvae in ballast water of ships. They adapted to the environment : the change in temperature ( warm to temperate) to variations in salinity and food of these regions. They displaced native species and with no natural predators they bred quickly. The golden mussel (Limnoperna fortunei) is from China rivers and streams. It is small and lives bonded to hard objects. In 1994, it caused trouble in the water treatment plant of   La Plata city; blocking the light pipes and reducing tubes. The snail Rapana venosa also of chinese origin, is a voracious predator feeding on bivalves and unlike the golden mussel spreads on argentinian coasts, this took over the uruguayan coasts. Both causes major ecological and economic harm. It must be found a way to control them. Llegaron al estuario del ...

Nacreous clam : Náyades

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We are all part of an ecosystem, and we think we know everything about life around us. But she takes different forms, it is often mysterious ...   The   nacreous clams of the hydric system of Rio de la Plata   are an example of this.  These clams are  native. They live in freshwater. They are large, and its outer surface is covered by a dark layer,   but they have a very beautiful inner nacre layer. They live in our ecosystem, buried in the sandy mud of unpolluted waterways, and part of their life cycle are parasites of   fishes .  In the early 50's they were used to make  buttons.  Today they are threatened by pollution, overfishing and the presence of invasive species that compete for their habitat. Todos nosotros somos parte de un ecosistema, y pensamos que conocemos toda la vida que nos rodea. Pero, ella toma diferentes formas , muchas veces es misteriosa... Las almejas nacaríferas de la cuenca del Río de la P...

Origin of the name Conchitas

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T he names are lost in the swirl of time, and in a vast nearly untouched pampa ...  The name :  Shells appears in property  titles to the area near the stream since late 1700. Historians say  that the origin of the name is due to the abundance of shells in the area and also the exploitation of them for use as calcium oxide. But, today there is no trace of these shells, nor abandoned quarries where excavations were made​​.  However, there is an important fact to consider, in clean waterways of the Rio de la Plata are bivalves. These freshwater bivalves live buried in the mud and leave their shells to die. Perhaps there were  existed in other  time in this area, and giving rise to the name Shells. Birth of the stream Las Conchitas behind Hudson´s house Nacimiento del Arroyo Las Conchitas detrás de la casa de Hudson Stream Las Conchitas near 1900  -  Arroyo Las conchitas cerca de 1900 Los nombres  se pierden e...