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Downstream of Brantas River Delta, Indonesia
Indonesia, Kediri, East Java
This is a part of the corner of the Brantas River delta which I use as the concept of this biotope event, where the water volume is shallower but inhabited by various kinds of biota, from plant fish and others. I hope this time my concept will bring victory so that it can introduce the biotope of rivers in our country.
- Submitted by
- MAA Rafsanjani
- Approved by
- Hans-Georg Evers & John Lenagan
- GPS
- -7.6065879, 112.1048508
- Geographical region
- Southeastern Asia
- Drainage Basin
- Brantas basin
- River catchment
- Brantas River Delta
- Water body type
- River
- Water body name
- Brantas
- Water body part
- Delta
- Water body course
- Lower course
- Water body: tributary of
- River
- Tributary name
- Bramata river delta
Videos above and below water
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Water Chemistry
Water information
- Water type
- fresh-water
- Water color
- Mixed water
- Water transparency
- Medium
- Concentration of sediments
- Medium
- Water temperature
- 28 °C
- Water flow/curent
- None
Chemical parameters
- pH
- 6.4
- Conductivity
- GH
- 6 mg/l
- dGH
- KH
- dKH
- Dissolved Oxygen
- 70 %
Substrate in nature
- Sand
- Black
- Pebble/Gravel
- Black
- Stone
- Black
- Stone form
- Roundish
- Silt/Mud
- Black
- Leaves
- Adundant
- Driftwood
- Few
- Submerged terrestrial vegetation
- Yes
Aquatic Biotope
- Date of collecting
- 17/04/2020
- Collecting area
- River bank
- Water depth
- 1,0m
- Air temperature
- 28 °C
- Sunlight
- Filtered/dappled sun
Environment
- Environment
- Untouched
- Surrounding area
The river is the longest river in East Java, Indonesia. It has a length of 320 km, and drains an area over 11,000 km² from the southern slope of Mount Kawi-Kelud-Butak, Mount Wilis, and the northern slopes of Mount Liman-Limas, Mount Welirang, and Mount Anjasmoro. Its course is semi-circular or spiral in shape: at its source the river heads southeast, but gradually curves south, then southwest, then west, then north, and finally it flows generally eastward at the point where it branches off to become the Kalimas and Porong River. The river flows in the eastern area of Java with predominantly tropical monsoon climate (designated as Am in the Köppen-Geiger climate classification).
- Underwater landscape
But this time I only raise the topic of biotope in the Brantas River delta, which is a shallower location and is inhabited by various types of small fish and plants.
rocks, sand, wood, plants.
Fishes:
- Macrognathus aculeatus
- Trichopsis vittata
- Glyptothorax platypogon
- Nemacheilus fasciatus
- Palaemonetes sp.
- Rhinogobius sp.
- Pila ampullacea
- Mastacembalus unicolor
- Mystus sp.
- Hemibagrus sp.
- Channa striata
- Trichopodus trichopterus
- Anabas testudineus
- Puntius binotatus
- Rasbora argyrotaenia
- Claris batracus
- Osteachilus vittatus
- Puntius sp.
- Barbodes ballerides
- Hampala macrolrpidota
- Tor soro
- Osphronemus gouramy
- Pangasius micronemus
- Hemibagrus nemurus
- Tor tombroides
- Threats to ecology
Residential development, fish poison, fish stun.
Riparian zone
- Trees near the aquatic habitat
-
Few -
Bibliography
-
1996 - The Ecology of Java and Bali. Hong Kong: Periplus Editions Ltd. hlm. 132
by Whitten, T; Soeriaatmadja, R. E.; Suraya A. A.
-
2004 - "Brantas River Basin Case Study, Indonesia"
by Ramu, Kikkeri
-
2007 - "Updated world map of the Köppen-Geiger climate classification". Hydrology and Earth System Sciences. 11: 1633–1644
by Peel, M C; Finlayson, B L; McMahon, T A
Comment by the expert
Hans-Georg Evers: Well done! Only water parameter and bibliography are not complete.
John Lenagan: The research was comprehensive, it was clear the participant had actually experienced this environment first hand and understood it components and how they formed and co-existed, this translation came through within the video with a subtley of approach and behavioural studies. It would have been helpful to have seen the overall setup and whole composition to better understand niche relationship and share knowledge of such a Biotope. The descrption of plants was not evident in the BIN supplied.
