The Biophysical Characteristics of Sea Turtle Spawning Beaches
A Study in Mas Popaya Raja Nature Reserve
Keywords:
Biophysical Charateristics, Sea Turtle, Spawning Beaches, Popaya IslandAbstract
This article contains the biophysical characteristics of turtle nesting beaches on Pobaya Island. The research was conducted in the Mas Pobaya Raja Nature Reserve. The method was an exploratory survey of the biophysical characteristics of the turtle nesting beach. It consists of beach width, sand temperature, beach slope, coastal vegetation and predators around the turtle nesting beach. The results showed that the width of the intertidal zone beach was 7.2 m - 31.7 m and the width of the supratidal zone beach was 11.6 m - 21.4 m. The highest sand temperature measurement at station 6 is 26 – 34.5 °C and the lowest at station 3 is around 24 – 31.5°C. The coastal slope includes stations 1, 2 and 3 with sloping categories ranging from 5.8o - 8.4o the direction of the beach slope at stations 4, 5 and 6 is steep, namely 14.24o - 17.87o. Two turtle species were found, namely Chelonia mydas and Eretmochelys imbricate. There were 14 types of vegetation found, station 5 had the lowest number of vegetation and the lowest was at station 6. Natural predators that often appear in turtle nesting habitats are monitor lizards, crabs, and insects. Air quality parameters during the study included water temperatures reaching 27 -32 oC, pH still in a stable condition, namely 7 - 8 and DO ranging from 12.4 - 15.3 mg/L.
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