ABSTRAK Penelitian tentang Jenis-jenis bakteri

ABSTRAK
Penelitian tentang Jenis-jenis bakteri yang berasosiasi pada proses dekomposisi
serasah daun Avicennia marina (Forsk) vierh setelah aplikasi fungi Aspergillus sp.,
Curvularia sp., dan Penicillium sp. pada beberapa tingkat salinitas bertujuan untuk
mengetahui keanekaragaman jenis bakteri. Penelitian dilakukan di Laboratorium
Mikrobiologi Departemen Biologi, FMIPA USU Medan dan di Kawasan Mangrove
Sicanang-Belawan dari bulan Desember 2009 sampai bulan Juni 2010. Hasil
penelitian menunjukkan bahwa ada 24 jenis bakteri yang berasosiasi pada proses
dekomposisi serasah daun Avicennia marina setelah aplikasi fungi pada beberapa
tingkat salinitas yaitu Bacillus (3 spesies), Sporosarcina (3 spesies), Planococcus (2
spesies), Micrococcus (2 spesies), Pseudomonas (1 spesies), Escherichia (1 spesies),
Mycobacterium (1 spesies), Flavobacterium (1 spesies), Corynebacterium (1
spesies), Caulobacter (1 spesies), Staphylococcus (1 spesies), Klebsiella (1 spesies),
Aeromonas (1 spesies),
Neisseria (1 spesies),
Acinetobacter (1 spesies),
Pleisomonas (1 spesies), Brevibacterium (1 spesies) dan Yersinia (1 spesies).
Keanekaragaman jenis dan populasi bakteri paling banyak ditemukan pada salinitas 010 ppt dan paling sedikit terdapat pada salinitas 20-30 ppt.
Kata kunci: Avicennia marina, bakteri, dekomposisi, fungi, diversitas, salinitas
Universitas Sumatera Utara
ABSTRACT
The research on The Variety of Bacteria which Asociated on the Decomposition
Process of Avicennia marina Leaf Litter After Aplicated Aspergillus sp., Curvularia
sp., and Penicillium sp. in the some Salinity Level had a purpose to know the diversity
of bacteria. The research had done at Microbiology Laboratory of FMIPA USU
Medan and at the mangrove area of Sicanang-Belawan did began at december 2009
until june 2010. The results of the research indicated that totally 24 species of bacteria
which asociated on the decomposition process of Avicennia marina leaf Litter After
Aplicated fungus in the some salinity level, including Bacillus (3 species),
Sporosarcina (3 species), Planococcus (2 species), Micrococcus (2 species),
Pseudomonas (1 species), Escherichia (1 species), Mycobacterium (1 species),
Flavobacterium (1 species), Corynebacterium (1 species), Caulobacter (1 species),
Staphylococcus (1 species),
Klebsiella (1 species), Aeromonas (1 species),
Neisseria (1 species), Acinetobacter (1 species), Pleisomonas (1 species),
Brevibacterium (1 species) dan Yersinia (1 species). The diversity of species and
population of bacteria were the highest at 0-10 ppt and the lowest at 20-30 ppt.
Keywords: Avicennia marina, Bacteria, Decomposition, Fungus, Diversity, Salinity
Universitas Sumatera Utara