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#7549 Igarapé do Aturiá, Rio Negro, Brasil

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Brazil, Amazonas, Comunidade do Aturiá

The Igarapé do Aturiá is one of the many forest streams that feeds into the Rio Negro. As the rainy season advances and the Rio Negro level rises, this clear igarapé wides as it starts to get invaded by the incredibly dark and tannin rich water.

What used to be the forest floor gets covered by leaf litter and a myriad of botanicals, fallen trees and branches create slower current areas and where the fine white sand of the bottom of the igarapé is exposed to the sunlight lush carpets of Eleocharis sp. grow.

Submitted by
Andre Muxagata Minguini
GPS
-2.5730000, -60.3724670
Geographical region
South America
Drainage Basin
Amazon
River catchment
Rio Negro
Water body type
Igarapè
Water body name
do Aturiá
Water body part
River mouth
Water body course
Lower course
Water body: tributary of
Rio
Tributary name
Rio Negro

Videos above and below water

Water Chemistry

Water information

Water type
Fresh water
Water color
Black water
Water transparency
Medium
Concentration of sediments
Medium
Water temperature
27 °C
Water flow/curent
Slow

Chemical parameters

pH
4.27
Conductivity
23.6
GH
KH
Dissolved Oxygen
78.4 %

Substrate in nature

Sand
White
Pebble/Gravel
None
Stone
None
Stone form
Silt/Mud
Reddish
Leaves
Adundant
Driftwood
Many
Submerged terrestrial vegetation
Yes

Aquatic Biotope

Date of collecting
24/01/23
Collecting area
Flooded area
Water depth
1,0m
Air temperature
Sunlight
Filtered/dappled sun

Environment

Environment
Untouched
Surrounding area

Wetland plant:

  • Eleocharis sp. (Cyperaceae)
Underwater landscape

The Igarapé do Aturiá is one of the many forest streams that feeds into the Rio Negro. As the wet season advances and the Rio Negro level rises, this clear Igarapé wides as it starts to get invaded by the incredibly dark and tannin rich water. What used to be the forest floor gets covered by leaf litter and a myriad of botanicals, fallen trees and branches create slower current areas and where the fine white sand is exposed to the sunlight lush carpets of Eleocharis sp. grow.

Fish:

  • Paracheirodon axelrodi (Characidae)
  • Dicrossus maculatus (Cichlidae)
  • Hemigrammus bellottii (Characidae)
  • Aequidens pallidus (Cichlidae)
  • Carnegiella  strigata (Gasteropelecidae)
  • Monocirrhus polyacanthus (Polycentridae)

Wetland plant:

  • Eleocharis sp. (Cyperaceae)
Threats to ecology

Riparian zone

Trees near the aquatic habitat
Many -