Electronic Theses and Dissertation

ABSTRAK
Fitoplankton dan zooplankton merupakan pakan alami bagi biota laut
termasuk ikan. Tujuan penelitian adalah untuk mengetahui struktur komunitas
plankton di muara Sungai Batee Iliek dan muara Sungai Peudada. Penelitian
dilakukan pada bulan April 2015. Penelitian dilakukan dengan menggunakan metode
purposive sampling pada 2 stasiun dengan 3 substasiun pada tiap stasiunnya.
Parameter yang diukur adalah: suhu air, salinitas, kecerahan, pH, dan oksigen
terlarut. Hasil penelitian menunjukkan bahwa plankton yang ditemukan pada stasiun
1 terdiri atas 5 kelas meliputi: Bacillariophycea (6 spesies), Dinophyceae (4 spesies),
Coscinodiscophyceaea (1 spesies), Litostomatea (1 spesies), dan Crustacea (5
spesies). Plankton yang ditemukan pada stasiun 2 terdiri atas 5 kelas juga yaitu
meliputi: Bacillariophycea (6 spesies), Dinophyceae (5 spesies), Chrysophyceaea (1
spesies), Litostomatea (1 spesies), dan Crustacea (3 jenis). Kelimpahan plankton
tertinggi yaitu 90193 ind/l. Indeks Keanekaragaman (H’) berkisar antara 1,60–2,24,
Indeks Keseragaman (E) berkisar antara 0,73-0,83, Indeks Dominansi (D) berkisar
antara 0,15-0,27, dan Indeks Similaritas 84,2%. Suhu air, pH, dan salini tas berkisar
antara (28,0-30,2 ), (8,2-8,4) dan (6-15 .)
Kata kunci: Struktur Komunitas, Fitoplankton, Zooplankton, Muara Sungai Batee
Iliek, Muara Sungai Peudada
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ABSTRACT
Phytoplankton and zooplankton are natural feed for aquatic ecosystems
including fish. The aim of this study was to determine the structure of plankton
community at estuary waters Batee Iliek river and peudada river. The study was
conducted in April 2015 by using purposive sampling method, which was carried
out by two stations, where there were 3 substations in each station. Parameters
measured were water temperature, salinity, pH, and dissolved oxygen. The results
showed that the plankton found in station 1 consist of 5 classes included:
Bacillariophycea (6 species), Dinophyceae (4 species), Coscinodiscophyceaea (1
species), Litostomatea (1 species) and crustaceans (5 species). Plankton are found
at station 2 also consist of 5 classes which included: Bacillariophycea (6 species),
Dinophyceae (5 species), Chrysophyceaea (1 species), Litostomatea (1 species) and
crustaceans (3 types). The highest abundance of plankton that was 90.193 ind/l.
Diversity Index (H ') ranged from 1,60-2,24, Evenness index (E) ranges between
0,73-0,83, and dominance index (D) ranged from 0,15 to 0,27, and the similarity
index was 84,2%. The water temperature, pH, salinity were ranged from between
(28,0-30,2 ?), (8,2-8,4), and (6-15 ).
Keyword: Community structure, Phytoplankton, Zooplankton, Estuary of Batee Iliek
river, Estuary of Peudada river

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