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Nypa brackish swamp, Samut Sakhon, Thailand

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Thailand, Central Thailand, Mueang Samut Sakhon District

This biotope is a brackish water swamp near the city of Bangkok in Thailand. There are a lot of Nypa fruticans – a palm species living in brackish water. Some of the fish live in this biotope hiding in the petioles, in the branches and roots of this palm. The others build their bubble nests in it. These unique habitats are shrinking all the time due to commercial development.

Submitted by
Antonin Lumixo
Approved by
Greg Martin & Peter Unmack
GPS
13.5602779, 100.3068619
Geographical region
Southeastern Asia
Drainage Basin
Gulf of Thailand
River catchment
Maha Chai river
Water body type
Wetland
Water body name
Nypa Brackish Swamp
Water body part
Water body course
Water body: tributary of
Tributary name

Videos above and below water

Water Chemistry

Water information

Water type
Brackish water
Water color
Clear water
Water transparency
Low
Concentration of sediments
High
Water temperature
24-28 °C
Water flow/curent
None

Chemical parameters

pH
7.5
Conductivity
2000
GH
KH
Dissolved Oxygen

Substrate in nature

Sand
None
Pebble/Gravel
None
Stone
None
Stone form
Silt/Mud
Brown
Leaves
Many
Driftwood
None
Submerged terrestrial vegetation
no

Aquatic Biotope

Date of collecting
October 15, 2018
Collecting area
Middle waters
Water depth
0,5m
Air temperature
30 °C
Sunlight
Full shade

Environment

Environment
Affected by human activity
Affected by human activity
Pollution
Pollution
Advanced
Surrounding area

Brackish-water swamps of Tha Chin river estuary have been largely converted to ricefields. The habitat is shrinking all the time due to commercial and agriculture developments near the biotope.

Underwater landscape

The water looks very cloudy and dirty.

Fishes

  • Oryzias javanicus (Adrianichthyidae)
  • Anabas testudineus (Anabantidae)
  • Aplocheilus panchax (Aplocheilidae)
  • Channa striata (Channidae)
  • Boraras urophthalmoides (Adrianichthyidae)
  • Betta mahachaiensis (Osphronemidae)
  • Trichopodus trichopterus (Osphronemidae)
  • Trichopsis vittata (Osphronemidae)
  • Dermogenys siamensis (Zenarchopteridae)

Mollusc

  • Pila ampullacea (Ampullariidae)

Aquatic plant

  • Lemna minor (Araceae) – some areas of the biotope do not have one.

Wetland plant

  • Nypa fruticans (Arecaceae)

Note: The biotope data, more precisely on that of Betta mahachaiensis, is collected by the author’s friend.

Threats to ecology

The estuary is already at risk due to pollution and activities in the estuary and this will be further compromised by floods, droughts, high sea levels and storms. High salinity levels and high temperatures will influence the health of mangrove and Nypoideae forests and affect the distribution of some of their plant species.

Riparian zone

Trees near the aquatic habitat
Many - Nypa fruticans

Sitography

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