Mangrove forest in Ambon Dalam Bay is a coastal ecosystem that is essential to support the development of the city of Ambon. Some of the main functions and the benefits
of mangrove forests are 1) as the protector of the sea and mainland protection; 2)
to reduce the sea damage due to various effects such as destruction of terrestrial sedimentation and pollution; 3) as a fortress to protect residential and other terrestrial environments from abrasion, seawater intrusion, strong wind, storm and minimize the tsunami waves [9]. Therefore, mangrove forest ecosystems need to be managed wisely in order to the function and its use able to sustainable. Many people believe that there has been an increase in destruction of mangrove forests Ambon Dalam Bay during the last decade after the riots in Ambon that occurred in 1999-2000. This is related to the government's efforts in enhancing the development of the Ambon city post-riot that less attention to the aspect of mangrove forest conservation. Many residential
developments, office buildings, farms, and other physical development is generally concentrated in the coastal areas not only have an impact on the decrease of mangrove forest area but also impact on its qualities. The increasing of marine traffic flow which is based Ambon Dalam Bay and a number of silt, waste and rubbish trapped in mangrove forests also accelerate the destruction of mangrove forests.