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Hill stream Gesing, Central Java, Indonesia
Indonesia, Central Java, Kaligono, Purworejo Regency
The Gesing stream is one of the tributaries of the Bogowonto River which flows from the mountainous National Park. The distance from the headwaters to the Bogowonto River is approximately 20km.
The Menoreh Mountain area is geomorphologically complex. Some of the rocks found include: sandstone, sandy marl, claystone, and limestone of the Middle Eocene; andesitic rocks, andesite breccias and tuff which are the result of Menoreh Volcano activity in the Oligocene; limestone and coral deposited in the Lower Miocene; and colluvium material deposited in the Quarter Age.
Therefore, this river is inhabited by the amphidromous goby.
- Submitted by
- Imanul Chakim
- Approved by
- Heok Hee Ng & Greg Martin
- GPS
- -7.7363110, 110.0875320
- Geographical region
- Southeastern Asia
- Drainage Basin
- The western side of the mountains is incised
- River catchment
- Sungai Gesing
- Water body type
- Stream
- Water body name
- Sungai Bogowonto
- Water body part
- Channel
- Water body course
- Headwaters
- Water body: tributary of
- Hill streams
- Tributary name
- Sungai Gesing
Videos above and below water
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Water Chemistry
Water information
- Water type
- fresh-water
- Water color
- Clear water
- Water transparency
- Medium
- Concentration of sediments
- Medium
- Water temperature
- 25-28 °C
- Water flow/curent
- Strong
Chemical parameters
- pH
- 8.0
- Conductivity
- GH
- 100 mg/l
- dGH
- KH
- 90 mg/l
- dKH
- Dissolved Oxygen
Substrate in nature
- Sand
- Beige
- Pebble/Gravel
- Mixed
- Stone
- Mixed
- Stone form
- Irregular
- Silt/Mud
- Beige
- Leaves
- Many
- Driftwood
- Few
- Submerged terrestrial vegetation
Aquatic Biotope
- Date of collecting
- 07.08.2023
- Collecting area
- River bank
- Water depth
- 0,5m
- Air temperature
- 29 °C
- Sunlight
- Full sun
Environment
- Environment
- Affected by human activity
- Affected by human activity
- Agriculture
- Agriculture
- Little
- Surrounding area
The area around the river is filled with shrubs and wild trees, one of which is bamboo, its dry twigs and leaves fall into the river.
- Underwater landscape
The stream in this river area has a lot of vegetation above the water that grows on the banks of the river and also trees so that the roots look beautiful on the banks of the river. Some of the rocks are covered with algae and are food for fish, especially Sicyopterus fish.
Fishlist:
- Stiphodon semoni (Gobiidae)
- Stiphodon pelewensis (Gobiidae)
- Stiphodon atropurpureus (Gobiidae)
- Stiphodon aureofuscus (Gobiidae)
- Lentipes ikeae (Gobiidae)
- Sicyopus rubicundus (Gobiidae)
- Sicyopterus hysterophorus (Gobiidae)
- Sicyopterus microcephalus (Gobiidae)
- Sicyopterus cynocephalus (Gobiidae)
- Sicyopterus microcephalus (Gobiidae)
- Sicyopterus lagocephalus (Gobiidae)
- Barbodes binotatus (Cyprinidae)
- Nemacheilus fasciatus (Nemacheilidae)
- Rasbora argyrotaenia (Danionidae)
- Macrognathus maculatus ()
- Homaloptera ocellata (Balitoridae)
- Rhyacichthys aspro (Rhyacichthyidae)
- Threats to ecology
Gobiids are very beautiful and are starting to become rare at this time because of the damage to the river, its pollution and many tourists visit and only in this place there are still many types of goby fish.
Riparian zone
- Trees near the aquatic habitat
-
Many -
Comment by the expert
Heok Hee Ng: Fishes listed are not entirely correct. Some of the gobies mentioned are not known from Java. Threats are not fully explained.
Greg Martin: Thorough.
