KAPASITAS ADAPTIF EKOLOGIS GUGUS PULAU GURAICI KECAMATAN KAYOA, KABUPATEN HALMAHERA SELATAN, PROVINSI MALUKU UTARA (Ecological Adaptive Capacity of Guraici Islands Group Sub-District Kayoa, Southern Halmahera District, North Moluccas Province)

ABSTRACT Coral reef, mangrove, and seagrass bed are important ecosystems in coastal areas and small islands which plays critical roles in maintenance of shorelines and lands on small islands. Those ecosystems have mutual relationships in providing effective protection of lands and lives on small islands. The objectives of the research are to calculate, to valuate, and to determine ecological adaptive capacity small islands of Guraici Islands. Field work was carried out at all 17 islands of Guraici Islands, where data collection and calculations of each ecosystem adaptive capacity of coral reef, mangrove and seagrass bed were made. Values of adaptive capacity for each ecosystem are found to range between 0.0 and 1.0 whereas values of the ecological adaptive capacity of every single island in Guraici Islands range between 0.0 and 3.0. The results of this research indicate that all small island ecosystems studied in Guraici Islands can be grouped into three categories of adaptive capacity, they are “medium, low, and very low”. Values of coral reefs adaptive capacity range between 0.0 and 0.58. Values of mangroves adaptive capacity range between 0.0 and 0.51. Values of seagrass beds adaptive capacity range between 0.0 and 0.51. Data analysis made also shows that small island ecological adaptive capacity in Guraici Islands has also belonged to three categories “medium, low, and very low”, where all their adaptive capacity values range between 0.37 and 1.64. Ten islands are in “Medium” category, six islands in “low” category, and one island is in “very low” category. Key words: coral reef, ecological adaptive capacity, mangrove, seagrass---ABSTRAK Terumbu karang (coral reef), mangrove dan padang lamun (seagrass bed), merupakan ekosistem penting di wilayah pesisir dan pulau-pulau kecil yang memegang peranan penting dalam melindungi garis pantai serta daratan pulau kecil. Ekosistem tersebut cukup efektif sebagai pelindung terhadap keselamatan lahan daratan pulau-pulau kecil, dan memiliki keterkaitan dalam melindungi pulau-pulau kecil. Tujuan peneliltian ini adalah menghitung, menilai serta menentukan status kapasitas adaptif ekologi pulau-pulau kecil dalam Gugus Pulau Guraici. Penelitian dilakukan pada 17 pulau yang terdapat dalam Gugus Pulau Guraici, dengan menghitung kapasitas adaptif ekosistem terumbu karang, ekosistem mangrove dan ekosistem lamun. Nilai Kapastias adaptif setiap ekosistem tersebut berkisar 0,0-1,0, sedangkan nilai kapasitas adaptif ekologi pula