Traditional wisdom was established on familiarity and concern for the homeland, where people are very dependent on their local resources and they developed management values based on their cultural beliefs. Traditional wisdom and its application can be useful for ecological management plans, especially conservation programs. The application of traditional wisdom as a starting point for conservation is based on: (1) Community institutional system (2) Community collective knowledge (3) Community relationship with their environment. Traditional wisdom is part of the basic theoretical framework in strengthening research designs with specific local knowledge, including environmental relationships that occur in the area. When conservationists recognize usefulness of traditional wisdom, they can engage in knowledge exchange and foster sharing of responsibilities with indigenous peoples. This type of exchange can also provide opportunities for indigenous peoples to develop scientific infrastructure.
Increase of human activities on coastal area in Central Weda Sub-District has caused degradation of coastal ecosystems. Even though coastal ecosystems have an essential role in marine ecology, such as coral reefs and mangrove forests, they are sometimes undermined by economic or commercial interests. This study aimed to determine density and cover percentage of mangrove forests and coral reefs in Central Weda Sub-district, North Maluku. Data collection on coral reef ecosystem components was carried out by applying georeferenced photo-transect and line transect quadrat techniques. While for mangroves, data collection included species diversity and tree/canopy cover percentage. Study result showed that based on lifeform percentage of coral reefs, most of the study areas were in a good category with 23.95% coverage, moderate condition 39,5%, and poor condition 36.6%. The coral reefs in good and moderate conditions were found at location having relatively low human activities. Whereas percentage of mangrove cover from all stations ranged from 78,39 to 78,76% with Important Value Index ranging from 106,79% to 158,32%.
Water quality management for aquaculture is very important because water is a living medium for aquaculture organisms. One of the technological products that use microbes to create a better environment by breaking down organic matter is probiotics. This study aims to determine the effects of different probiotic administration times on water quality in white leg shrimp culture at a laboratory scale. Juveniles of white leg shrimp with PL27 size were reared for 45 days and given four treatments with probiotics at different times. The result showed that the administration of probiotics with a short period interval had a significant effect on floc volume, absolute growth, survival rate, concentrations of ammonia, nitrate, and nitrite. Provision of probiotics with a short time span tended to reduce the concentration of ammonia, nitrate and nitrite. The difference in time of giving probiotics to bio-floc media increased the growth of white leg shrimp, improved water quality, and reduced the concentration of ammonia (NH3), nitrate (NO3), and nitrite (NO2).
Hutan mangrove memegang peranan penting di wilayah pesisir diantaranya sebagai daerah pemijahan dan tempat mencari makan organisme laut. Selain itu, hutan mangrove juga menjaga garis pantai dari ancaman abrasi. Sayangnya keberadaan hutan mangrove di wilayah Kecamatan Weda Tengah khususnya Desa Lelilef Waibulan dan Desa Lelilef Sawai telah mengalami kerusakan. Oleh karenanya perlu dilakukan suatu program rehabilitasi hutan mangrove yang berbasis masyarakat, dimana masyarakat secara aktif terlibat baik dalam tahap perencanaan, pembibitan, penanaman, monitoring dan evaluasi. Pelatihan ini berfokus pada teknik pembibitan buah mangrove sebelum di tanam dengan tujuan memberikan pemahaman dan pengetahuan yang memadai tentang cara pembibitan dan penyemaian yang baik bagi masyarakat khususnya kelompok masyarakat peduli hutan mangrove. Pelatihan berlangsung selama tiga hari dengan metode pemberian teori di kelas dan praktek lapang dilokasi pembibitan. Hasil pelatihan menunjukan bahwa semua peserta cukup memahami materi yang disampaikan. Hal ini terlihat dari cara anggota kelompok mengaplikasikan teori yang diperoleh di kelas dengan praktek lapang. Namun demikian perlu ada rencana tindak lanjut berupa pelatihan cara penanaman, perawatan dan pendampingan untuk kegiatan monitoring dan evaluasi pertumbuhan mangrove.
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