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The Meru Betiri area is influenced by monsoon wind. During November to March, the westerly wind brings rainfall to the area, whereas the dry season occurs during April to October. The average annual rainfall is between 2,300 and 4,000 mm, with 4 dry months and 7 wet months in average.
As a result of its diverse topography, Meru Betiri National Park contains five distinct vegetation types:
Conservation efforts are primarily concentrated on the nearby turtle nesting beaches, particularly at Sukamade, where the turtles are monitored and protected during egg laying. Green, Leatherback, Hawksbill, Olive Ridley and Loggerhead turtles uses the same beaches Visitors can also see turtles laying their eggs on beaches near Sukamade. Many people also take in Sukamade Beach when visiting Meru Betiri National Park, while Alas Purwo National Park is also worth a look. The park office organizes trek through the national park and there are several guesthouses in the area.
As a result of its diverse topography, Meru Betiri National Park contains five distinct vegetation types:
- Coastal vegetation, found around Sukamade Bay and Meru Bay. This vegetation includes the Barringtonia asiatica, Calophyllum inophyllum, Hibiscus tiliaceus, Terminalia catappa, and Pandania tectorius.
- Mangrove vegetation, found at the eastern side of the Rajegwesi Bay as the outlet of Lembu and Karang Tambak Rivers, Meru Bay and Sukamade Coast. The dominan vegetation are Rhizophora, Avicennia and Bruguiera. At the outlet of the Sukamade River, there is Nypa fruticans.
- Swam vegetation, found at the back of the mangrove forest of Sukamade. Some tree species here are Manilkara kauki, Gluta renghas, Alstonia scholaris, and Sterculia foetida.
- Lowland tropical rainforest, including among others tree species of Pterospermum, Tetrameles nudiflora, Ficus variegata, Diospyros cauliflora, Aglala variegata, Dracontomelon mangiferum, Bischoffia javanica, Dysoxylum amoroides, Gossampinus heptaphylla, Litsea, and Plectocomia elongata.
- Rheofit, found in the wetland areas, such as the Sukamade area. The dominant vegetation species here is the Saccharum spontaneum.
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Declared by Minister of Forestry No. 277/Menhut-VI/1997, May 23, 1997.