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Abstrak :
Studi struktur komunitas ikan di Situ Salam Kampus Universitas Indonesia (UI) Depok, telah dilakukan untuk mengetahui struktur komunitas ikan dengan mengacu pada komposisi, dominasi, kegelapan, dan keanekaragamannya. Sampel ikan diambil di empat titik yaitu Salam inlet, Salam midlet, zikon pond, dan Salam toko. Hasil penelitian menunjukkan bahwa 10 spesies ikan ditemukan, yaitu Amphilopus citrinellus, Barbodes binotatus, Clarias batrachus, Channa striata, Oreochromis mossambicus, Oreochromis niloticus, Poecilia reticulata, Pterygoplichthys pardalis, Trichopodus pectoralis, dan Trichopodus trichopterus. Komposisi ikan tertinggi dari danau Salam adalah Pterygoplichthys pardalis itu Senyawa sekitar 54%. Outlet Salam memiliki total spesies tertinggi dengan 9 spesies. Zikon tambak adalah lokasi dengan indeks keanekaragaman tertinggi dengan nilai 1,34.

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A study of fish community structure at Situ Salam Kampus Universitas Indonesia (UI) Depok, has been conducted to know the structure community of fish with reference to composition, domination, eveness, and its diversity. Fish samples were taken at four spots that is Salam inlet, Salam midlet, zikon pond, and Salam outlet. Result of research showed that 10 species of fish were found, those are Amphilopus citrinellus, Barbodes binotatus, Clarias batrachus, Channa striata, Oreochromis mossambicus, Oreochromis niloticus, Poecilia reticulata, Pterygoplichthys pardalis, Trichopodus pectoralis, and Trichopodus trichopterus. Highest fishes composition of Salam lakes are Pterygoplichthys pardalis that compound about 54%. Salam outlet has highest species total with9 species. Zikon pond were the location with the highest diversity index with value1.34.

Abstrak :
Penelitian tentang struktur komunitas Gastropoda di Situ Salam Kampus Universitas Indonesia, Depok telah dilakukan untuk mengetahui struktur komunitas Gastropoda di Situ Salam UI yang berkaitan dengan kelimpahan relatif, komposisi, dominansi, kemerataan dan keanekaragaman jenisnya. Pengambilan sampel Gastropoda dilakukan pada 9 stasiun penelitian dengan tiga kali pengulangan. Hasil penelitian menunjukkan jumlah jenis Gastropoda yang ditemukan di Situ Salam sebanyak 9 jenis, yaitu Bellamya javanica, Brotia costula, Brotia testudinaria, Indoplanorbis exustus, Lymnea rubiginosa, Melanoides granifera, Melanoides tuberculata, Pomacea canaliculata dan Thiara scabra. Stasiun 7 yang merupakan lokasi outlet memiliki jumlah jenis tertinggi, yaitu sebanyak 9 jenis dan memiliki nilai indeks keanekaragaman tertinggi dengan nilai indeks sebesar 1,74. Jenis Gastropoda yang memiliki kelimpahan relatif tertinggi di Situ Salam adalah Melanoides tuberculata 48,5%.

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A study of Gastropoda community at Situ Salam Kampus Universitas Indonesia (UI) Depok, has been conducted to know the structure community of Gastropods with reference to relative abundance, composition, domination, eveness and its diversity. Gastropods samples and abiotic parameters were taken at 9 stations with three repetitions. Result of research showed that 9 species of Gastropods were found, those are Bellamya javanica, Brotia costula, Brotia testudinaria, Indoplanorbis exustus, Lymnea rubiginosa, Melanoides granifera, Melanoides tuberculata, Pomacea canaliculata and Thiara scabra. Station 7 which located at outlet of the Situ Salam has the highest number of species as well as highest diversity index that is 9 species and H? = 1,74, respectively. Melanoides tuberculata was the most abundance species with the relative abundance value of 48,5%.