Dumai is one of the coastal waters of Indonesia that has the potential for the biodiversity of microorganisms including anoxygenic photosynthetic bacteria (APB). Anoxygenic photosynthetic bacteria are bacteria that carry out decomposition activities even though oxygen levels in water and sediment are very little or even absent. This study aims to determine anoxygenic photosynthetic bacteria from aquatic and sedimentary ecosystems in the coastal waters of Dumai, Indonesia. This research was conducted by an experimental method using modified mineral media. The APB was isolated from six different places in sequence, namely Dumai sea station, river prayer room, harbor, shrimp pond area, fish auction place, and, Purnama tour. All bacteria obtained were then characterized by their morphological and physiological characteristics. The isolation results showed that 15 different bacterial isolates were obtained after being determined based on Bergey’s Manual of Determinative Bacteriology. All isolates contained different pigments such as carotenoids, xanthophylls, and, chlorophylls. Thus, further utilization of APB bacteria can be carried out in various microbiological applications such as bioremediation, aquaculture, biofuel, food, and medicines.

Indonesia merupakan negara berkembang yang mengalami penurunan ketahanan ekonomi akibat meningkatnya jumlah tenaga kerja namun tidak diiringi oleh penambahan lapangan kerja. Salah satu upaya dalam mencegah hal itu yaitu dengan melakukan pelatihan, penyuluhan, dan pendampingan dalam berwirausaha terkhususnya daerah Pangkalan Lesung. Pangkalan lesung merupakan daerah yang memiliki potensi objek wisata dan sumber daya alam yang tinggi. Tujuan dilakukan pengabdian masyarakat ini adalah untuk meningkatkan ketahanan ekonomi dengan pelatihan kewirausahaan. Metode yang digunakan yaitu survei, sosialisasi, dan pelatihan. Hasil yang diperoleh yaitu masyarakat antusias dalam mengikuti kegiatan yang dilakukan dan keinginan masyarakat untuk membuka usaha atau berwirausaha sangat tinggi. Kata Kunci : Kewirausahaan, Pangkalan Lesun, Ketahanan Ekonomi, Pelatihan