#493: 360L Biotope Aquascape Rio Negro in Barcelos region - Brasil

José Antonio Dos Reis Sumaré, Brazil


If you had represented this as a tributary of the Rio Negro or a small backwater along the edge of the Rio Negro it would have been more plausible. But the Rio Negro is a vast body of water that is hardly represented by a small tangle of wood like this. Also Corydoras sp. are generally found in large schools not just 2 at a time. Be careful in a biotope contest that your description actually addresses the SPECIFIC biotope you are depicting not just the major body of water that your biotope is a small part of.
— Karen Randall

Aquascape Details

Dimensions 120 × 60 × 50 cm
Title Rio Negro in Barcelos region - Brasil
Volume 360L
Background Black Painted
Lighting 3 10w leds reflectores 3.000k
Filtration Sump 80x50x50 pump 2.000 l/h
Plants none
Animals 5 Pterophyllum leopoldi, 1 Mesonauta sp,2 Corrydora sp
Materials Substrate: serrapilheira n°2 Pterophyllum Projekt, roots,Branches
Additional Information BIOTOPE INFORMATION
Description of the area around the biotope The Negro River is the largest tributary of the left bank of the Amazon River in the Amazon, South America.
It is the longest river of black water in the world, and the second largest in volume of water - behind only the Amazon, which helps to form.
It has its origin between the Orinoco and Amazon basins.
 Connects with Orinoco through the Cassiquiare channel. In Colombia, where it has its source, it is called the Guainia River.
 Its main tributaries are the Rio Branco and the Vaupés River.
It disputes being the beginning of the Orinoco River along with the Guaviare River. Drains the eastern Andes in Colombia.
 After passing through Manaus, it joins the Solimões River and, from that union, the latter becomes the Amazon River.

Description of the biotope underwater landscape: Blackwater river but with crystal clear water, with large amount of branches and leaves deposited in the background, the substrate and fine sand mixed with forest litter

Description of habitat parameters: Black water is extremely poor in mineral salts, nutrients and electrolytes due to poor movement and soft relief of its source regions, Guiana and Central Brazil Shields or in tertiary sediments, where erosion processes they are low intensity and reduced by the forest cover where the water from precipitation penetrates the soil covered by vegetation and carries with it various organic substances. Humic substances are composed of humic and fluvic acids and originate during the process of decomposition of plant residues. The low ion content plus the presence of humic substances give black waters an acid character with pH values ​​between 4.8 and 5.1. The large amount of humic substances and dissolved organic carbon (DOC) (10 to 14 mgC.L -1) from decomposition of organic material is largely responsible for the transparent red / brown coloration of water.

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