Uet Era Ngermeuangel
| Uet Era Ngermeuangel | ||
|---|---|---|
| Geographical location | Koror , Palau | |
| Data | ||
| Coordinates | 7 ° 19 '25 " N , 134 ° 30' 31" E | |
|
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| surface | 4.3 ha | |
| length | 290 m | |
| Maximum depth | 40 m | |
Uet Era Ngermeuangel is a brackish lake in the island state of Palau on the Ngermeuangel Peninsula of Koror Island .
Geography and hydrography
The lake is located in the south of the Ngermeuangel Peninsula, which makes up the southern part of Koror and is itself formed by deep bays and rugged coral formations. Only six hundred meters further south is the smaller Goby Lake .
Although the lake is connected to the sea through crevices, it is meromictic . It reaches a depth of approx. 40 m. The lake is layered. It has an upper layer of oxygen-rich water and a lower anoxic layer. The oxygen content decreases from about 5 to 6 ppm at the surface to 0 ppm at a depth of about 15 m. The stratification is permanent, ie there is no seasonal mixing or mixing during and shortly after storms. Therefore, organisms that need oxygen to live are limited to the top 50 feet.
fauna
The lake is known for its population of the Mastigias papua jellyfish .
literature
- Republic of Palau Adventure and Dive Guide. Guide to the undisputed Best Diving in the World. Franko Maps Ltd. 2016.
- Michael Dawson: Five new subspecies of Mastigias (Scyphozoa: Rhizostomeae: Mastiigidae) from marine lakes, Palau, Micronesia. ( PDF ) from February 11, 2010.
- William Hamner, Peggy Hamner: Stratified marine lakes of Palau (Western Caroline Islands) . In: Physical Geography. Vol. 19, pp. 175-220.