Morfometric study of Seagrass Thalassia hemprichii, in Pasir Panjang Beach, Paputungan Village, West Likupang, Minahasa Utara
DOI:
https://doi.org/10.35800/jip.7.1.2019.22731Abstract
This study was aimed at knowing seagrass species in the study site and comparing the morphometry of seagrass Thalassia hemprichii with sampling station. Sample collection employed haphazard survey, and samples and substrate were taken using a big knife, washed in seawater, an in seawater, and put into a seawater-containing bucket. Sampling points were determined by GPS, and 30 individuals of T. hemprichii were taken. Results showed that T. hemprichii in Pasir Panjang coastal waters has bigger size in mangrove and seagrass areas than that in the coral reefs. It could result from that mangrove and seagrass areas grew in muddy substrate that contained higher nutrients and calmer water condition than those in coral reefs with coral debris substrate.
Keywords : Morfometrics, Thalassia hemprichii, Pasir Panjang Beach
ABSTRAK
Tujuan penelitian adalah untuk mengetahui jenis lamun apa saja yang ada di lokasi penelitian ini dan membandingkan ukuran morfometrik lamun Thalassia hemprichii berdasarkan stasiun pengambilan sampel. Pengambilan data dilakukan dengan mengunakan metode survei jelajah, sampel diambil dengan parang bersamaan dengan substrat, dicuci dengan air laut dan dimasukan kedalam ember yang berisi air laut. Saat pengambilan sampel dilakukan, posisi diplot dengan mengunakan GPS dan dilanjutkan dengan pengambilan sample lamun Thalassia hemprichii sebanyak 30 individu setiap stasiun, Pada hasil yang diperoleh terlihat bahwa spesies Thalassia hemprichii di Perairan Pantai Pasir Panjang yang lebih besar di daerah mangrove dan daerah lamun dan yang lebih kecil adalah daerah terumbu karang. Hal ini disebabkan, karena daerah mangrove dan lamun tersebut tumbuh pada subsrat lumpur yang memiliki kandungan nutrien lebih tinggi dibandingkan dengan daerah terumbu karang dengan subsrat pecahan karang, dan keadaan perairan pada subsrat lumpur lebih tenang sehingga banyak mengendapkan sedimen.
Kata Kunci : Morfometrik. Thalassia hemprichii. Pantai Pasir Panjang
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