Coral reef is one of the important coastal ecosystems that have high biodiversity. This study aims to analyze the composition of the taxa and the distribution of coral species, the ecological index of coral communities and the status of coral reefs. The research was conducted from April-May 2019 in the coastal waters of Hukurila Village, South Leitimur District, Ambon City. Collecting coral data by using the Line Intercept Transect (LIT) method. Determination of coral reef condition based on percent data (value) of coral reef cover. During the study, 116 species of stony coral from 49 genera and 16 families were found, which 50 species of them are protected and 23 species of ornamental coral. The similarity index of stony coral species between coral reef locations ranges from 0.52-0.76 or there is the similarity of stony coral species between locations coral reef in the amount of 52-76%. The coral reefs of Hukurila Village have high diversity of coral species, with a low dominance of coral species in the community, and the compatibility of coral species in the community is classified as stable. Acropora corals contributed a low covering percent value (9.98%), while Non-Acropora corals contributed a relatively high percent of covering value (43.56%). The status of coral reefs between locations in the coastal waters of Hukurila Village is in the criteria of good (healthy).   ABSTRAK Terumbu karang merupakan salah satu ekosistem pesisir penting yang emiliki kenanekaragaman hayati tinggi. Penelitian ini bertujuan untuk menganalisis komposisi taksa dan sebaran spesies karang, indeks ekologi kominitas karang dan status terumbu karang. Penelitian dilakukan dari April-Mei 2019 di perairan pesisir Negeri Hukurila Kecamatan Leitimur Selatan Kota Ambon. Pengumpulan data karang menggunakan metode Line Intercept Transect (LIT). Penentuan kondisi terumbu karang berdasarkan data (nilai) persen penutupan karang batu. Selama penelitian ditemukan 116 spesies karang batu dari 49 genera dan 16 famili, dimana 50 spesies diantaranya dilindungi dan 23 spesies karang hias. Indeks similaritas spesies karang batu antar stasiun terumbu karang berkisar antara 0,52-0,76 atau terdapat kesamaan spesies karang batu antar lokasi terumbu karang sebesar 52-76%. Terumbu karang Negeri Hukurila memiliki diversitas spesies karang tinggi, dengan dominansi spesies karang rendah dalam komunitas, dan keserasian spesies karang dalam komunitas tergolong stabil. Karang Acropora memberi kontribusi nilai persen penutupan rendah (9,98%), sementara karang Non-Acropora memberi kontribusi nilai persen penutupan karang batu relatif tinggi (43,56%). Status terumbu karang antar stasiun terumbu perairan pesisir Negeri Hukurila berada dalam kriteria baik (sehat).   Kata kunci: terumbu, karang batu, keragaman spesies, kesamaan, persen penutupan

Mangrove has the ability to absorb waste and pollutants including heavy metals Pb. This study aims to identify sources of metals Pb contamination in mangrove forest area in Waiheru District and to analyze Pb content of in sediment and mangrove roots. The data collection method used was the direct observation (in situ measurement) and analysis of laboratory. Sediments and mangrove roots were analyzed by atomic absorption Spectrophotometry (AAS). Findings showed that It was identified three types of activity expected to become the potential of contamination sources of metal Pb in the area around mangrove forests namely; the agriculture activity, settlement and a motorboat. The metal content of Pb in sediment in around Sonneratia alba and Rhizophora apiculata exhibited the highest concentrations of 1, ISSN 2168-9148 2015 9129mg/kg and 1.7965 mg/kg, respectively. Meanwhile, the lowest was in around mangrove from species Avicennia marina with the Pb concentration of 0.7259 mg/kg. Among the three species of mangrove, A. marina roots indicated highest Pb concentration (0.2857 mg/kg). It means that A. marinawas more effective in reducing of the contaminant material of the metal Pb. Aquatic Science and Technology

The Study was conducted on April to May 2019 in the coastal waters of Hukurila village, Leitimur Selatan District of Ambon city with the aims to analyzed taxon composition, species diversity, density, standing stock, potency of target species  and status of reef fish. Reef fish data were collected at four reef stations using UVC method. The result showed that there were 192 species of reef fish inhabit coral reef of Hukurila village. Pomacentridae, Labridae and Chaetodontidae have high species richness, while other seven families have low species richness. Relative diversity of reef fish in the study area can be classified in poor to moderate category, and the estimated number of species of reef fish was 369 species. Species diversity of reef fish is high, with low species dominance  in the community and species evenness of reef fish in their community is in stable condition. Density of reef fish between reef station ranged of 2.9-4.0 ind. m-2. Furthermore, the standing stock of reef fish ranged of 28,840-40,400 ind.ha-1 and biomass of target reef fish species ranged of 1.67-5.14 (± 3.53) tons ha-1 of coral reefs. Status of reef fish in the coral reef of Hukurila village belong to high category. ABSTRAK Penelitian dilakukan dari April sampai Mei 2019 di perairan pesisir Negeri Hukurila, Kecamatan Leitimur Selatan Kota Ambon dengan tujuan menganalisis komposisi taksa, diversitas spesies, densitas, sediaan cadang, potensi ikan karang spesies target dan status ikan karang. Data ikan karang dikumpulkan dari 4 stasiun dengan metode underwater visual census (UVC). Ditemukan 192 spesies ikan karang Menempati terumbu karang Hukurila. Famili Pomacentridae, Labridae, Chaetodontidae memiliki kekayaan spesies tinggi, sementara tujuh famili memiliki kekayaan spesies rendah. Diversitas relatif ikan karang di areal studi termasuk  kategori miskin hingga moderat, dan diestimasi jumlah spesies ikan karang pada habitat terumbu Negeri Hukurila sebanyak 369 spesies. Diversitas spesies ikan karang tinggi, dengan dominansi spesies rendah dalam komunitas dan keserasian spesies ikan karang dalam kondisi Stabil. Densitas ikan karang antara stasiun terumbu berkisar antara 2.9 - 4.0 ind/m2. Sediaan cadang ikan karang antara stasiun terumbu berkisar antara 28.840 - 40.400 ind/ha dan potensi spesies target berkisar 1,67-5,14 (± 3,53) ton/ha terumbu karang. Kondisi ikan karang di terumbu Negeri Hukurila termasuk kategori tinggi. Kata kunci:   Ikan karang, keanekaragaman spesies, kepadatan, sediaan cadang, potensi

The difference in accumulation of lead and mercury heavy metals in water, sediments and seagrass organs Enhalus acoroides (roots, rhizomes and leaves) is found in the waters of Kayeli Bay, Buru Island, Maluku Province. Samples were taken from ten observed station (Kayeli River Estuary, Suket River Estuary, Anahoni River Estuary, Waelata I Estuary, Waelata River Estuary II, Waeapo River Estuary, Sanleko River Estuary, Marlosso River Estuary, Nametek Beach and Jikumerasa Beach). Pb and Hg were analyzed using Atomic Absorption Spectrophotometer. The content of Pb and Hg in sediments is higher than in water. The highest Pb and Hg content is found in the roots then in the rhizoma and leaves (roots> rhizoma> leaves). Seagrass Enhalus acoroides is one of the living organisms that can be used as a bio-indicator of the level of heavy metal pollution in the aquatic environment. Key Words: Enhalus acoroides, Pb, Hg, Bioakumulasi, Bioindicator

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