KEANEKARAGAMAN JENIS, KEPADATAN, DOMINANSI, DAN POLA PENYEBARAN ALGA HIJAU DI PERAIRAN PANTAI KALASEY MINAHASA SULAWESI UTARA
DOI:
https://doi.org/10.35800/jplt.11.1.2023.52736Keywords:
Keanekaragaman Jenis Alga Hijau; Pantai KalaseyAbstract
At the study site found sandy, muddy, sand mixed with dead coral, broken coral and rock
substrates. Overall, the dominant substrate is sand mixed with silt. The surface temperature of the
waters at the study site at the time of sampling based on environmental parameter measurements was
33°C, which means that the temperature at the research location is considered ideal. The salinity value
at the time of sampling in Kalasey waters was 30‰. Based on the results of measuring the pH using a
PH meter, the value obtained was 7. There were 4 species of green algae at the study site, almost all
types of green algae had a dominant density such as Acetabularia acetabulum and some had relatively
less density such as Halimeda opuntia. The diversity of Hʹ index values indicates Moderate diversity
and moderate community conditions, there are several species that dominate these waters such as
Acetabularia acetabulum whose number is more than the other species.
Keywords: Diversity Of Green Algae, Kalasey Beach
ABSTRAK
Di lokasi penelitian ditemukan substrat berpasir, berlumpur, pasir bercampur dengan karang
mati, patahan karang serta batuan. Secara keseluruhan substrat yang mendominasi yaitu pasir
bercampur lumpur. Suhu permukaan perairan di lokasi penelitian pada saat pengambilan sampel
berdasarkan pengukuran parameter lingkungan adalah 33°C yang berarti bahwa suhu di lokasi
penelitian tersebut tergolong ideal. Nilai salinitas pada saat pengambilan sampel di perairan kalasey
yaitu 30‰. Berdasarkan hasil pengukuran PH dengan menggunakan alat pengukur PH nilai yang
diperoleh adalah 7. Terdapat 4 spesies alga hijau di lokasi penelitian tersebut, hampir semua jenis alga
hijau memiliki jumlah kepadatan yang dominan seperti Acetabularia acetabulum dan ada juga memiliki
jumlah kepadatan yang relatif kurang seperti Halimeda opuntia. Keanekaragaman nilai indeks Hʹ
menunjukkan keanekaragaman Sedang dan keadaan komunitas yang sedang, ada beberapa spesies
yang yang mendominasi perairan tersebut seperti Acetabularia acetabulum yang jumlahnya lebih
banyak dibanding jenis yang lain.
Kata Kunci: Keanekaragaman Jenis Alga Hijau, Pantai Kalasey
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