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Habitat of Taoyuan Pond in Taiwan

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Taiwan, Longtan District, Taoyuan City

Taiwan Taoyuan Pond was formed in 1741, mainly to irrigate farmland. After nearly 300 years, it has become an important habitat for many native fish and aquatic plants.

Submitted by
Chen Li Fan
Approved by
Fan Li & Zhou Hang
GPS
24.8896713, 121.1982193
Geographical region
Eastern Asia
Drainage Basin
Laojie River
River catchment
Water body type
Pool
Water body name
Xujia Pond
Water body part
Water body course
Water body: tributary of
Tributary name

Videos above and below water

Water Chemistry

Water information

Water type
Fresh water
Water color
Clear water
Water transparency
Medium
Concentration of sediments
High
Water temperature
16~28 °C
Water flow/curent
Slow

Chemical parameters

pH
7,5
Conductivity
108
GH
5 mg/l
KH
Dissolved Oxygen

Substrate in nature

Sand
no
Pebble/Gravel
Beige
Stone
Grey
Stone form
Silt/Mud
Grey
Leaves
Many
Driftwood
Many
Submerged terrestrial vegetation
No

Aquatic Biotope

Date of collecting
10/5/2020
Collecting area
Edge of reservoir
Water depth
0,5m
Air temperature
18 °C
Sunlight
Full sun

Environment

Environment
Human settlements
Human settlements
many
Surrounding area

Taoyuan pond was formed in 1741 AD. The immigrants who moved to Taiwan more than two hundred years ago found that Taoyuan tableland was too high to accumulate rainwater. And there was no suitable river channel for irrigation. Therefore, they excavated these artificial ponds for farming.

There were nearly 10,000 ponds at most in Taoyuan area, which was a spectacle in the landscape. It is also the only area in Taiwan with this landscape. Taoyuan has been called the hometown of thousands ponds. These large and small ponds have evolved for more than 100 years and have become habitat for various native plants and animals.

Underwater landscape

There is a natural spring in the pond. Rotala rotundifolia grows along the pond. Puntius snyderi will lay eggs in Rotala rotundifolia. Rhodeus ocellatus and Anodonta are symbiotic and mutually beneficial. Rhodeus ocellatus will lay eggs in Anodonta until fries hatch.

When they leave Anodonta, the Anodonta will take the opportunity to release the larval oocysts to the Rhodeus ocellatus adult fish. The oocysts will attach to fish scales, and the larvae will break away from the fish body after breaking the cysts.

Fishes

  • Rhodeus ocellatus
  • Puntius snyderi
  • Oryzias sinensis

Molluscs:

  • Anodonta

Aquatic plant

  • Rotala rotundifolia
Threats to ecology

Later, due to the construction of Shimen Reservoir in 1913, and the development of Taoyuan and Shimen Dazhen waterways, farm irrigation did not rely on ponds anymore. As a result, the desolation of many ponds led to Eutrophication or filling up for other commercial purposes, and even many alien species’ invasion, such as Gambusia affinis, Tilapia zillii, perch, etc., causing great threat to native species.

Riparian zone

Trees near the aquatic habitat
Many -

Sitography

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