Abstract
The research aimed to understand the nesting area characteristic of C. mydas in the Kasiak Island was conducted from March-April 2017, coincidence with the nesting time of green turtle. Observation of the nesting area of green turtle was conducted in the Northern, Southern, Western and Eastern parts of the island. Parameters studied were the slope of the beach, the distance between the water edge during the high tide and the nest, sand texture, types of vegetations around the nest, number of nests present and the quality of water around the island. Results shown that the coast’s slope ranged from 1.74 to 2.890, the distance between the water edge during the high tide and the nest ranged from 1.17 to 1.70 m, the substrate texture was dominated by sand (> 90%), silt (3.4-7.25%) and clay (2-8%). The nest temperature was 25-320C, nest humidity was 30-40% and the common vegetation was Thespesia populnea. Quality of the water around the Kasiak Island are as follows: temperature was 29-300C, salinity was from 33-34 ‰, current speedwas 0.4-0.5 m / s and pH was 8.
Highlights
The research aimed to understand the nesting area characteristic of C. mydas in the Kasiak Island was conducted from March-April 2017, coincidence with the nesting time of green turtle
Observation of the nesting area of green turtle was conducted in the Northern, Southern, Western and Eastern parts of the island
Parameters studied were the slope of the beach, the distance between the water edge during the high tide and the nest, sand texture, types of vegetations around the nest, number of nests present and the quality of water around the island
Summary
Kata kunci: Penyu hijau, repreduksi penyu hijau, sarang penyu, migrasi penyu hijau. The research aimed to understand the nesting area characteristic of C. mydas in the Kasiak Island was conducted from March-April 2017, coincidence with the nesting time of green turtle. Penelitian ini bertujuan untuk mengetahui karakteristik area tempat bertelur penyu hijau (Chelonia mydas) di Pulau Kasiak yang meliputi kemiringan pantai, jarak sarang dari rata-rata pasang tertinggi air laut, tekstur pasir, suhu dan kelembaban sarang, jenis vegetasi, jumlah sarang dan kualitas perairan. Hasil penelitian menunjukkan bahwa kemiringan pantai 1,74-2,890C, jarak sarang dari rata-rata pasang tertinggi air laut 1,17-1,70 m, tekstur pasir yaitu > 90 % pasir, debu 3,4-7,25 % dan liat 2-8 %, suhu sarang 25-320C, kelembaban sarang 30-40 %, jenis vegetasi yang dominan adalah tumbuhan waru laut (Thespesia populnea). Pulau Kasiak terletak pada koordinat 00o 35’ 44 - 00o35’ 48,3’’ LS dan 1000 0,4’ 28,4’’ – 1000 0,4’ 31,9’’ BT dengan jarak dari Kota Pariaman berkisar 30-45 menit. Hampir diseluruh pulau-pulau tersebut terdapat lokasi peneluran bagi penyu hijau dan penyu sisik (Harfiandri, 2000). Karakteristik Pulau Kasiak sebagai tempat peneluran penyu hijau penting diteliti
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