Observations of Natural Recruitment and Human Attempts at Mangrove Rehabilitation After Seismic (Tsunami and Earthquake) Events in Simeulue Island and Singkil Lagoon, Aceh, Indonesia - Post-Tsunami Hazard: Reconstruction and Restoration - page 306

Mangrove Distribution
Simeulue Island
Aceh

N

West Simeulue

Teluk
Dalam

Simeulue Island

Key

Mangrove

East Simeulue

Land

0 0

kilometers

Fig. 19.3 The mangroves in Teluk Dalam, north central Simeulue island have already reached a
coverage of 2,268 stems per hectare due to the relative small uplift ( left ). Larger uplift occurred in
the Eastern side of the island taking the mangroves away from the original intertidal zone resulting
in low level of natural recruitment ( right ) (Source: Blue Forests/author)

have differential tolerances to inundation, a major factor in the apparent zonation of
mangroves from based on substrate elevation (from MSL - HGT).
A transect walk through the mangroves on the seaward edge of “Anak Laut”
lagoon in Singkil reveals the pattern of mangrove mortality and rejuvenation.
Rhizophora apiculata is dominant at the lowest elevations adjacent to the open
water of the lagoon. As one continues further inland, species dominance changes
with substrate elevation in the following pattern;

￿ Zone 1: Rhizophora apiculata ( with Aegiceras corniculatum in the upper estuary )

￿ Zone 2: Brugueira gymnorrhiza with some Nypa fruticans